Dr. Jay Avasthi is President and Chief Operating Officer (COO), and Director of Geoservices, Geosequestration, and Unconventionals (Shale Oil & Gas, Tight Gas, CBM), at Avasthi & Associates, Inc. (A&A), a worldwide energy consulting company founded in 1990. 

A&A, now a multi-specialty consulting team of more than 100 seasoned consultants and collaborators, provides full-service, multi-specialty, integrated consulting services to the worldwide oil & gas/ energy industry for onshore and offshore (shallow and deep water), conventional and unconventional (shale oil & gas, tight gas, CBM) resources, gas-condensate/volatile oil, and heavy oil field evaluation, development, and optimization (to maximize oil & gas recovery and project profitability), as well as for improved oil recovery (IOR)/enhanced oil recovery (EOR), CO2 EOR, CCS/CCUS/CO2 geosequestration, carbon management, greenhouse gas (GHG) emissions, clean energy/blue Hydrogen, and related projects, and customized training services. 

Dr. Jay Avasthi has extensive worldwide oil & gas/ energy industry experience in geomechanics technologies and practices, including 24 years with Chevron Corporation working on drilling, completion, production and reservoir engineering, and EOR/IOR, projects. His expertise includes acquisition, calibration, and use of the in situ stress data for waterflood (IOR) and enhanced oil recovery (EOR) project improvement, oil & gas well construction and production, fracturing stimulation, waste disposal through injection, wellbore stability, wellbore geomechanics, and sand production prediction. 

Dr. Jay Avasthi has been actively involved in technological advancements in the areas of horizontal well drilling and hydraulic fracturing. He is the inventor/author of a U.S. patent (Number 4,977,961) on ‘Method to Create Parallel Vertical Fractures in Inclined Wellbores’, that was granted in 1990 to Chevron Research Corporation, while he was employed with Chevron. He has authored/co-authored numerous technical papers on hydraulic fracturing, and related topics, and those papers are published in peer-reviewed technical journals.

Dr. Jay Avasthi was involved in conducting Underground Coal Gasification (UCG) pilot-tests in Rawlins, Wyoming, U.S.A., during the seventies and eighties, while he was employed with Gulf Oil Corporation (which was later acquired by Chevron Corporation). He authored/co-authored several technical papers on geomechanics aspects of those UCG pilot-tests, and those papers are published in peer-reviewed technical journals and in UCG Symposium Proceedings.

Dr. Jay Avasthi is a geosciences and engineering alumnus of the Indian Institute of Technology (Indian School of Mines), the University of Minnesota Twin Cities, and the University of Wisconsin-Madison (where he earned a Ph.D. degree in Mining Engineering/ Rock Mechanics). He worked in senior-level geomechanics, fracturing stimulation, EOR/IOR, engineering, research, and supervisory positions for 24 years with Chevron Corporation, before joining Avasthi & Associates, Inc. in 2003.

Dr. Jay Avasthi is a long-standing member of the Society of Petroleum Engineers (SPE), and a technical editor of the 'SPE Reservoir Evaluation & Engineering Journal'. He has taught numerous short courses, and conducted hands-on training workshops, in his areas of technical expertise, around the world. He is a co-instructor of the popular SPE courses on 'Practical Aspects of CO₂ Flooding EOR', 'CCUS/Geological Sequestration of CO₂', and 'Optimizing Gas Fields using Integrated Asset Modeling (IAM), and Introduction to Optimizing Shale Gas and Tight Oil Fields'. He was a board member and Program Chairman for the SPE Los Angeles Basin Section. 

Dr. Paul Bondor, an expert in Steamflood/Thermal EOR (TEOR), Chemical EOR (CEOR), EOR/IOR Engineering and Economics, and Offshore Field Development Planning (FDP) has worked with Avasthi & Associates, Inc. (A&A) as a Principal Steamflood/Thermal EOR (TEOR), Chemical EOR (CEOR), EOR/IOR Engineering and Economics, and Offshore Field Development Planning (FDP) Consultant, since 2006, and provides consulting and training services in his areas of technical expertise. He is a co-instructor, with Dr. Sam Avasthi, of five-day training workshops on EOR/IOR technologies and strategies, conducted by A&A at the request of its clients, at their offices, around the world.  

Dr. Bondor has more than 45 years of worldwide oil & gas industry experience, including 35 years with the Royal Dutch/ Shell Group in reservoir engineering and simulation research, practice and supervision, enhanced oil recovery (EOR) by various processes, EOR/IOR project design, evaluation and optimization; and as a reservoir engineering instructor for the Shell Oil E&P training organization. While at Shell, he gained extensive experience working on steamflood/thermal EOR (TEOR), chemical EOR (CEOR), and other EOR/IOR processes/projects, designing and conducting EOR pilot tests, supervising EOR research, and as Head of EOR Research and Development for the Royal Dutch/Shell Group worldwide. Since his retirement from Shell in 2003, he has continued to consult on EOR/IOR technologies and practices around the world. 

Dr. Bondor was a SPE Distinguished Lecturer on EOR, during 2010 – 2011, and in this role he lectured on EOR at the SPE chapters around the world. Dr. Bondor co-authored a technical paper, with Dr. Sam Avasthi, on ‘Planning EOR Projects’, which was presented at the SPE International Petroleum Conference in Mexico, held in Puebla, Mexico, during November 2004; and an article based on that paper was published under Management Series in March 2005 issue of the Journal of Petroleum Technology (JPT).  Another technical paper co-authored by him, with Dr. Sam Avasthi, on ‘Planning EOR Projects in Offshore Oil Fields’, was presented at the Latin American and Caribbean Petroleum Engineering Conference (LACPEC) in Rio de Janeiro, Brazil, during June 2005. 

Dr. Bondor is an engineering alumnus of Case Western Reserve University, where he earned a B.S. degree in Engineering Science, a M.S. degree in Mechanical Engineering, and a Ph.D. degree in Engineering; and thereafter he worked in senior-level EOR engineering and research positions at the Royal Dutch/ Shell Group for 35 years. He is a long-standing member of SPE, a Technical Editor of the SPE Reservoir Evaluation & Engineering Journal, and a co-instructor, with Dr. Sam Avasthi, of the SPE courses on 'Practical Aspects of Thermal EOR' and 'Practical Reservoir Survillance and Management Techniques for EOR/IOR Projects'.

Dr. Eric Pasternack, a seasoned geologist and petrophysics expert, has worked with Avasthi & Associates, Inc. (A&A) since 2003, as Principal Geological and Petrophysical, and Shale Resources Evaluation Consultant, and provides consulting and training services in his areas of technical expertise.

Dr. Pasternack has over 37 years of worldwide oil & gas industry experience, including 20 years with ARCO in reservoir log analysis, and rock properties and well logging research and supervision. Since leaving ARCO in 1998, he has continued to consult in reservoir petrophysical interpretation, core calibrated log interpretation, exploration well site QC and post-drill petrophysical interpretation, and on shale resources evaluation projects. He has taught several short courses, and conducted training workshops, around the world, in his areas of technical expertise.

Dr. Pasternack is an alumnus of Brandeis University (where he earned a B.S. degree in Physics) and the University of Pennsylvania (where he earned a Ph.D. degree in Geology). He is a long-standing member of the Society of Petrophysicists and Well Log Analysts (SPWLA), American Association of Petroleum Geologists (AAPG), and the Society of Petroleum Engineers (SPE). He served as President of SPWLA during 1989-90. He has authored/co-authored numerous publications and patents. 

Dr. Pasternack is tri-lingual in English, Spanish and Russian, and has taught industry training courses, in these languages, on several topics in his areas of technical expertise.

Dr. Stephen Norris, P.E., an expert reservoir engineer with extensive worldwide oil & gas industry experience in reservoir engineering and simulation/ dynamic modeling, CO₂ EOR, pressure transient analysis, rate transient analysis, well log analysis, reserves and economics, and uncertainty analysis, has worked with Avasthi & Associates, Inc. (A&A) as a Principal Reservoir Engineering and Simulation/ Dynamic Modeling, CO₂ EOR, Reserves and Economics, and Uncertainty Analysis Consultant since 2019, and provides consulting and training services in his areas of technical expertise.

Dr. Norris has over 30 years of worldwide oil & gas industry experience, having worked with Texaco, Louisiana State University, Schlumberger, Encana, J. W. Operating, Anadarko Petroleum, and in consulting. His extensive worldwide oil & gas industry experience includes working on major CO₂ EOR reservoir engineering and simulation/ dynamic modeling, waterflood optimization, and oil & gas field development planning and management projects.

Dr. Norris, while working at Anadarko Petroleum was responsible for developing the Salt Creek CO₂ flood in Wyoming, where his responsibilities included:

• Reservoir simulation/ dynamic modeling of the CO₂ flood processes, as well as

• Leading the subsurface project team for the CO₂ foam and ASP projects. He is a co-author of two SPE papers on this work.

While at Anadarko, he also conducted reservoir engineering and simulation/ dynamic modeling studies for water and gas injection projects in some of the major oilfields of Algeria. 

He has spent most of his professional career working in asset team management and reservoir simulation/ dynamic modeling, and he has extensive experience in using popular reservoir simulators (CMG's GEM and IMEX, Landmark’s VIP and Nexus, and SLB’s Eclipse).

Dr. Norris is an engineering alumnus of Texas A&M University (where he earned a Ph.D. degree in Petroleum Engineering), and Louisiana Tech University (where he earned B.S. and M.S. degrees in Petroleum Engineering). He is a licensed Professional Engineer (P.E.), and a long-standing member of SPE. He has made numerous presentations at technical meetings, and published technical papers in his areas of technical expertise.   

Dr. Scott MacKay has worked with Avasthi & Associates, Inc. as a Principal EOR/IOR Geophysical/ Seismic Interpretation Consultant since 2007, and provides consulting and training services in his areas of technical expertise. Dr. MacKay is a Petroleum Geoscientist with over 39 years of international experience. He started his oil industry career with Tenneco Oil in 1979, as an Exploration Geophysicist in the Denver Division, developing the geological and geophysical framework for structural and stratigraphic plays in the Williston Basin and other Rocky Mountain plays. He later joined Tenneco’s Special Projects Group in Houston, in 1986, as an Exploration Advisor integrating the efforts of multidisciplinary exploration and exploitation teams in areas including the Bahamas Carbonate Platform, North Slope, Offshore Gabon, North Sea, Colombia, and the Gulf of Mexico. In 1988 Dr. MacKay joined Western Geophysical (now Schlumberger Geosolutions) as a Research Geophysicist developing new methods for imaging complex structures using prestack depth migration. In 1992 he was appointed Manager of R&D for WesternGeco (now Schlumberger Geosolutions) where he also served as World-wide Coordinator for Depth Imaging, Time-lapse Reservoir Characterization, and Multicomponent Imaging. Dr. MacKay has five U.S. patents and numerous publications on applying innovative and practical solutions to exploration and exploitation challenges.

Dr. MacKay became an independent consultant in 2003 working international interpretation projects and advising on the application of new technologies and their impact on risk reduction. He also specializes in the application of depth imaging to projects spanning complex structural to subtle resource plays to quantify reservoir quality using advanced attributes such as AVOAz inversion.

Dr. MacKay is an alumnus of Bridgewater University in Massachusetts (where he earned B.S. degrees in both Chemistry and Geology). He obtained his M.S. degree in Geophysics from the Colorado School of Mines, and his Ph.D. degree in Geology and Geophysics from the University of Houston. He teaches several state-of-the-art industry training courses on seismic interpretation and advanced attribute formation, including, but not limited to, ‘Practical Depth Conversion with Petrel’, ‘Practical Depth Conversion and Depth Imaging for the Interpreter’, and ‘The Interpreter’s Guide to Depth Imaging’. He is bi-lingual in English and Spanish.

Dr. MacKay is bi-lingual in English and Spanish, and has taught industry training courses, in these languages, on several topics in his areas of technical expertise.

Dr. Jonathan Kwan, an expert in Chemical EOR (CEOR), EOR/IOR Engineering and Economics, and Oil & Gas Field Development projects has worked with Avasthi & Associates, Inc. (A&A) as a Principal Chemical EOR (CEOR), EOR/IOR Engineering and Economics, and Oil & Gas Field Development Consultant since 2020, and provides consulting and training services in his areas of technical expertise.

Dr. Kwan has more than 40 years of worldwide oil & gas industry experience, including 20 years with UNOCAL in Chemical EOR (CEOR), EOR/IOR Engineering and Economics, and Oil & Gas Field Development projects; and natural gas engineering.  While at UNOCAL he served in various technical and management positions in research, operations, marketing, strategic planning, and business development. 

Dr. Kwan’s extensive oil & gas industry experience includes working with Kinder Morgan CO2 Company on a major CEOR project in Yates Field in Texas Permian Basin. He has also worked with Shell, Anadarko Petroleum, and as a consultant.

Dr. Kwan is an engineering alumnus of the University of California, Berkeley, where he earned a B.S. degree in Electrical Engineering, and the University of Southern California, where he earned M.S. and Ph.D. degrees in Chemical & Environmental Engineering. He is a long-standing member of SPE, has published and presented numerous technical papers at SPE, and other technical, conferences, around the world. He has three patents to his credit, has published a book and numerous other publications in technical journals. He has received numerous recognitions for his SPE, and other technical activities.   He has worked as a professor of petroleum engineering at the University of Oklahoma and taught numerous courses around the world. He serves as an adjunct professor of petroleum engineering at the University of Houston and volunteers his time as a Global Energy Mentor.

Dr. Sub Subramanian, an expert in reservoir simulation software development and applications, has worked with Avasthi & Associates, Inc. (A&A), since 2015, as a Principal Reservoir Simulation Software Development and Applications/ Dynamic Modeling Consultant.

Dr. Subramanian has over 40 years of worldwide oil & gas industry experience, including 34 years with ExxonMobil Corporation, in simulation software development and applications/ dynamic modeling, reservoir engineering research and practice, EOR/IOR project design, evaluation and optimization, and training.

Dr. Subramanian’s extensive experience working on EOR/IOR projects includes evaluation of pilot-tests and field-wide projects by conducting state-of-the-art simulation studies, including history matching, forecasting, and performance optimization.

Dr. Subramanian is an engineering alumnus of the University of Minnesota (where he earned a PhD degree in Chemical Engineering). He is a long-standing member of SPE, and has authored/co-authored several technical papers in his areas of technical expertise. 

Dr. Alex Turta, an expert in EOR/IOR, heavy oil recovery, and thermal enhanced oil recovery projects, has worked with Avasthi & Associates, Inc. (A&A) since 2020 as a Principal EOR/IOR, Heavy Oil Recovery, and Thermal EOR Consultant, and provides consulting and training services in his areas of technical expertise. His more than 50 years of oil industry experience includes working for Alberta Innovates Technology Futures (AITF), formerly Alberta Research Council (ARC), for more than 14 years, for the University of Calgary Petroleum Recovery Institute, for 12 years, for R&D Institute for Oil & Gas in Romania, for 20 years, and in consulting around the world.

Dr. Turta’s extensive experience working on thermal EOR (TEOR) projects includes, but is not limited to:

1. Obtained his Ph.D. degree with contribution to the development of wet combustion In Situ Combustion (ISC) process.
2. More than 27 years' experience with field, laboratory and analytical modelling of ISC, being instrumental in the design, implementation and evaluation of the world’s biggest ISC process/project at Suplacu de Barcau, Romania (maximum daily oil production 10,000 bbl/day) and guiding the world’s second biggest ISC processes/projects in Balol and Lanwa, in India

• Technical reports on ISC: 37 (for more than 18 projects, both pilots and commercial projects)
• Publications on ISC process/projects: 20
• ISC international consultancy work: Ecuador, India, Malaysia, Japan, China, Russia, Kazakhstan, Romania, Brazil, USA, Colombia and Argentina; World Bank ISC expert in 1986 for Videle-Balaria commercial ISC projects in Romania; ISC expert for India in the period 1991-1996 and in 2015
• Consultancy in North America: Amoco, USA, Oracle Oil, USA, ARC (1993)
• ISC related patents: 9
• Instrumental in developing the theory and practice of commercial exploitation of heavy oil reservoirs by ISC using the peripheral line drive operation starting from the uppermost part of the structure; today, this is the preferred mode of exploitation, worldwide.
• Instrumental in the development of the short-distance oil displacement (SDOD) processes: Toe-To-Heel Air Injection (THAI), and catalytic THAI (CAPRI), in a long cooperation (1992-2003) with University of Bath, England. THAI and CAPRI are new recovery processes for heavy oil recovery. Also, developed the Toe-To-Heel Waterflooding (TTHW) process and investigated the Toe-To-Heel Steamflooding, which, at this time, is still under development
• In year 2000, he introduced the concept of Short-distance Oil Displacement (SDOD) process, used extensively in conjunction with SAGD, THAI, top-down ISC, etc., which are SDOD processes
• Established a more general equation for the calculation of the apparent hydrogen-carbon ratio (H/C ratio) from the composition of the produced gases of an ISC pilot. This takes into account the gases which are non-participating in the combustion but are produced with those participating, such as hydrocarbon gases, hydrogen, some CO₂, etc.
• Highlighted the strong positive effect of high reservoir temperature on the applicability of ISC. This is directly related to the possibility of using small air fluxes (low air injection rates) and to the possibility of using the peripheral line drive operation starting from the uppermost part of the structure

Dr. Turta has also been involved in the design of several miscible CO₂ flood EOR projects for light oils and in monitoring and evaluation of CO₂ injection projects. He has been instrumental in selection of perspective oil fields for CO₂ EOR and CO₂ storage, and been a project leader of a project on flue gas and CO₂ enhanced gas recovery (EGR), and CO₂ storage, in gas fields in Alberta.

Dr. Turta is an engineering alumnus of the Institute of Oil and Gas Bucharest, Romania, where he earned M.S. and Ph.D. degrees in Petroleum Engineering [with specialization in Thermal EOR (TEOR)]. He has made numerous presentations at oil industry conferences, published numerous technical papers in TEOR, and other EOR/IOR, topics in oil industry publications, and has taught numerous training courses in TEOR, and other EOR/IOR, topics, around the world.

Dr. Dan Cooper, a seasoned production geologist, and geocellular modeling/ static modeling, and reservoir characterization expert, has worked with Avasthi & Associates, Inc. (A&A) since 2013 as a Principal Geological, Geocellular Modeling/ Static Modeling, and Reservoir Characterization Consultant, and provides consulting and training services in his areas of technical expertise.

Dr. Cooper has over 37 years of worldwide oil & gas industry experience, including 20 years with Saudi Aramco, in geological assessment of oil & gas reservoirs, reservoir characterization, geocellular modeling/ static modeling, geophysical interpretation and velocity modeling, geostatistics, reservoir simulation/ dynamic modeling, and in reservoir management and supervision. His expertise includes working on silico-clastic (fluvial, braided stream, fluvial-estuarine, distributary delta, delta, turbidite), and carbonate (reef, platform, carbonate debris flow, calcarenite) reservoir systems. He is an expert Petrel user, and works closely with petrophysicists, geophysicists and simulation engineers to insure full interdisciplinary contribution to the model building process. He is experienced in uncertainty analysis and probabilistic determination of geocellular model based hydrocarbon volumes. He has taught short courses on applied geocellular modeling and volumetrics, and on several other topics in his areas of technical expertise, around the world.

Dr. Cooper is an alumnus of the University of Mississippi (where he earned a B.S. degree in Civil Engineering, and a Ph.D. degree in Geological Engineering), and Rice University (where he earned a M.S. degree in Engineering Science). 

Dr. Cooper is a licensed Professional Geologist (P.G.), and a licensed Professional Engineer (P.E.). He is a long-standing member of the American Association of Petroleum Geologists (AAPG), has authored/co-authored numerous technical reports and studies, and presented technical papers at various international, national and regional geological conferences. He is bi-lingual in English and Spanish.

Dr. Chris Heine, a seasoned geologist, with extensive experience in geocellular/static modeling, sedimentology, sequence stratigraphy, and biostratigraphy, has worked with Avasthi & Associates, Inc. (A&A) since 2020 as a Principal Geological, Geocellular/Static Modeling, and Reservoir Characterization Consultant, and provides consulting and training services in his areas of technical expertise.

Dr. Heine has over 37 years of worldwide oil & gas industry experience, including 19 years with Saudi Aramco, 9 years with Mobil Oil, and in consulting. His extensive geological experience includes building state-of-the-art geological models that can be populated with reservoir properties that duly reflect each facies in the reservoir, using a fully integrated approach tying core, traditional open-hole logs, and specialty logs (such as borehole image and NMR). His expertise includes getting the underlying geology right first, image log interpretation and core integration, using modern and outcrop analogs for a better reservoir modeling, geocellular modeling from outcrop to desktop, well placement based on the corporate objectives, training and training program development, staff development, process improvement, and leading project teams. He has lectured on several geological topics, in his areas of technical expertise, around the world.

Dr. Heine is an alumnus of the University of Tennessee (where he earned a B.S. degree in Geology), Tulane University (where he earned a M.S. degree in Petroleum Engineering, and the University of Aberdeen (where he earned a Ph.D. degree in Geology). He is a long-standing member of the American Association of Petroleum Geologists (AAPG), has authored/co-authored numerous technical reports and studies, and presented technical papers at various international, national and regional geological conferences. He is an expert in Middle Eastern reservoirs, having worked for Aramco for 19 years.

Dr. Vinh Phan, an accomplished reservoir engineer with extensive oil & gas industry experience in conducting reservoir engineering and simulation/modeling, field development planning/modeling (FDP/FDM), and integrated asset modeling (IAM), and related, studies, has worked with Avasthi & Associates, Inc. (A&A) as a Principal Reservoir Engineering and Simulation/Modeling, FDP/FDM, and IAM Consultant since 2017, and provides consulting and training services in his areas of technical expertise.

Dr. Phan has over 15 years of oil & gas industry experience, having worked in senior level engineering positions, with BP and Lukoil, on several challenging projects on reservoir engineering, reservoir simulation and characterization, top-down reservoir modeling, uncertainty analysis, optimization, artificial intelligence, neural/predictive network modeling, geostatistical modeling, and software development. His extensive experience includes working on a wide variety of reservoirs (conventional and unconventional, clastic and carbonates), on land and offshore fields, in all stages of oil and gas business [acquisition, exploration, appraisal, development, production, and reservoir management for both onshore and deep-water offshore projects with major oil operating companies].

Dr. Phan’s specialties include, but are not limited to, conceptual field development and option evaluation, depletion planning, property/economic evaluation, probabilistic evaluation, uncertainty/decision analysis, history matching, waterflood management, static reservoir modeling/construction, dynamic reservoir modeling/simulation and characterization, optimization, and geostatistical modeling, as well as classical reservoir engineering (such as, volumetric, material balance, decline curve analysis, pressure transient analysis, integrated asset modeling, nodal analysis, analog studies, and recovery factor calculations, etc.).             

Dr. Phan’s extensive experience in using commercial reservoir simulators, and other technical software includes, but is not limited to:

• Conducting state-of-the-art reservoir simulation/modeling studies using several commercial reservoir simulators
• Expertise in using probabilistic approach for the assessment of petroleum resource and reservoir performance using Top-Down Reservoir Modeling (TDRM), Top-Down Option Evaluation (TDOE), and Experimental Design (DoE)
• Expertise in Routine Core Analysis (RCA), Special Core Analysis (SCAL), MDT, DST, and PVT analysis, and integrating these data into simulation models
• Expertise in integrated asset modeling (IAM) using Prosper, Mbal and Gap software
• Expertise in pressure transient analysis [PTA (PIE, ECRIN)], rate transient analysis (RTA), and temperature transient analysis (TTA), using KAPPA and SAPHIR software
• Expertise in using reservoir modeling tool (Petrel)
• Expertise in using conceptual field development planning/modeling (FDP/FDM) tool with risk and uncertainty modeling (PetroVR) 
• Expertise in using economic evaluation and uncertainty analysis software (PEEP)
• Mastery in various programming languages (PASCAL, FORTRAN, C, C++, JAVA, CGI, PERL, MATLAB)
• Expertise in integrating separately constructed reservoir simulation models into one single simulation model
• Expertise in modeling complex surface pipeline network and setting-up well/reservoir/drilling management logics into simulation model

Dr. Phan is an engineering alumnus of Pennsylvania State University (where he earned a Bachelor’s degree in Petroleum Engineering), and Stanford University (where he earned a Doctorate degree in Petroleum Engineering). He is a citizen of the United States, a long-standing member of the Society of Petroleum Engineers (SPE), and author/co-author of several technical papers published in the SPE literature.

Dr. Rajan Chokshi, an expert in production optimization and artificial lift design, has worked with Avasthi & Associates, Inc. (A&A) since 2016, as Principal Production Optimization, and Artificial Lift Design, Consultant, and provides consulting and training services in his areas of technical expertise.  

Dr. Chokshi has over 30 years of worldwide oil & gas industry experience in multi-phase flow, artificial lift design, and production optimization projects. He has conducted numerous studies, and lectured extensively, in his areas of technical expertise, around the world.

Dr. Chokshi is instructor/co-instructor of the following customized training workshops conducted by A&A at the request of its clients, at their offices around the world, whenever mutually convenient:

·      Artificial Lift and Production Optimization 

·      Production Systems Analysis 

·      Gas Lift 

·      Reciprocating Rod Lift 

·      Production Optimization 

·      Artificial Lift for Shale and Tight Reservoirs 

·      Artificial Lift for Heavy Oil 

·      Multiphase Metering 

·      Real-Time Measurements for Production Optimization 

For an outline of any of these customizable training workshops, please contact us. 

Dr. Chokshi is also an instructor/co-instructor of several popular public training courses taught under the auspicious of the Society of Petroleum Engineers (SPE).

Dr. Chokshi is an engineering alumnus of Gujarat University, Indian Institute of Technology, and the University of Tulsa (where he earned a Ph.D. degree in Petroleum Engineering). He was a SPE Distinguished Lecturer on Artificial Lift, for 2015-2016, and has served on the SPE global committees for training and production awards. He is a long-standing member of SPE, and author/co-author of several technical papers published in the professional journals.

Mr. Alton Ahrens, a seasoned petroleum engineer with extensive project experience in CO₂ Injection Well (PROSPER) Modeling has worked with Avasthi & Associates, Inc. (A&A) since 2021 as a Principal CO₂ Injection Well (PROSPER) Modeling Consultant and provides consulting and training services in his areas of technical expertise to A&A clients around the world.

Mr. Ahrens’ almost 30 years of worldwide oil & gas industry experience (working with Denbury Resources, Shell International E&P, Enserch E&P, and consulting companies) includes working on challenging projects in the areas of field development planning (FDP), CO₂ enhanced oil recovery (EOR), integrated reservoir studies, reservoir simulation/dynamic modeling, NODAL analysis, pressure transient analysis, project economics, reserves, and knowledge transfer through mentoring and coaching. 

Mr. Ahrens is an expert NODAL analysis engineer with extensive experience in building state-of-the-art CO₂ injection well models, using PROSPER, as well as in updating / modifying / improving well models developed by others. He holds a bachelor’s degree in Petroleum Engineering from Texas A&M University. 

Mr. Darrell Davis is a seasoned CO₂ EOR, reservoir engineering and simulation/ dynamic modeling professional with extensive worldwide oil & gas industry experience.  He has worked as a Principal CO₂ EOR, Reservoir Engineering and Simulation/ Dynamic Modeling Consultant at Avasthi & Associates, Inc. (A&A) since 2017 and provides consulting and training services in his areas of technical expertise. 

Mr. Davis has over 38 years of worldwide oil & gas industry experience, having worked with Getty Oil/ Texaco, Advanced Resources, Devon Energy, Shell Oil, and Denbury Resources.  For the past 28 years he has focused on EOR/IOR reservoir engineering and simulation/ dynamic modeling projects.  His extensive international experience includes working in Kuwait, Angola, Indonesia, Oman, and Malaysia.

Mr. Davis has been a key player in the design and implementation of two CO₂ floods along the US Gulf Coast.  The Port Neches field CO₂ project was conducted by Texaco during the 1990s when oil prices were low, therefore he worked with members of a US government agency to obtain $8.7 million funding from the US Department of Energy (DOE).  He also designed a pilot CO₂ flood for an offshore oilfield in Vietnam, performing reservoir simulation while coordinating slim-tube tests and facility design and cost estimation.  He spent 3-1/2 years in Oman working for Shell on miscible gas floods of carbonate stringers. While with Denbury, he was the lead reservoir engineer on two successful CO₂ floods.  He and co-workers prepared SPE paper #144961-PP, during 2011, that he presented at the SPE Enhanced Oil Recovery Conference in Malaysia. 

Mr. Davis is an engineering alumnus of the University of Houston, where he earned a Bachelor’s degree in Mechanical Engineering. He is a co-instructor, with Dr. Sam Avasthi and Dr. Jay Avasthi, of three popular training courses taught under the auspicious of the Society of Petroleum Engineers (SPE): ‘Practical Aspects of CO₂ Flooding EOR’, ‘Geological Sequestration of CO₂’, and 'Shale EOR - Practical Aspects'.

Mr. Victor Huerta is a seasoned reservoir engineer with 19 years of oil & gas industry experience working on major gas/ gas-condensate field development planning (FDP), reservoir engineering, simulation and management, integrated asset management (IAM), and enhanced oil & gas recovery projects. He has worked as a Principal Gas/ Gas-condensate Field Deverlopment Planning (FDP), Reservoir Engineering, Simulation and Management, and Integrated Asset Management (IAM) Consultant at Avasthi & Associates, Inc. (A&A) since 2020 and provides consulting and training services in his areas of technical expertise. 

Mr. Huerta has worked as Senior Numerical Simulation Engineer and Development Head at SAVIA PERÚ, where he worked on major subsurface projects for oil and gas fields (Blocks Z-2B and Z-6). He was also head of the Development and Production Department of PETROPERU, in-charge of the follow-up of the Development of Situche Central field, Block 64. He also worked for Repsol Peru as technical leader in the Development of Block 57 and for Pluspetrol Norte, in the surveillance of the heavy oil fields of Block 1AB.

Mr. Huerta has also worked as a part-time Associate Professor of Petroleum and Natural Gas Engineering at UNI (the National University of Engineering, Lima, Peru) where he has taught undergraduate and postgraduate courses on the topics of Applied Reservoir Engineering, Natural Gas Engineering, Enhanced Oil Recovery, and Numerical Reservoir Simulation. 

Mr. Huerta is an engineering alumnus of UNI (where he earned a Bachelor’s degree in Petroleum Engineering), and the University of Calgary, Canada (where he earned a Master’s degree in Energy and The Environment). He was Chairman of the Society of Petroleum Engineers (SPE) Section in Lima, Peru, during 2014-2015. He has presented more than 20 technical papers at SPE conferences around the world.

Mr. Huerta is bi-lingual in English and Spanish, and has taught industry training courses, in both languages, on the following topics in his areas of technical expertise:

·       Estimation, Classification and Categorization of Reserves and Resources under SEC and PRMS Criteria

·       Risk Analysis and Decision Making in Oil & Gas Industry

·       Applied Numerical Reservoir Simulation

·       Applied Reservoir Engineering

·       Reservoir Management of Oil and Gas Fields

·       Fundamentals of Economic Assessment for Oil and Gas Projects

·       Integrated Project Management of Oil and Gas Fields

·       Improved Oil Recovery

Mr. Bijay Banthia, an expert reservoir engineer with extensive worldwide oil & gas industry experience in EOR/IOR reservoir engineering and simulation, CO₂ EOR, oil & gas and unconventional/ shale resources evaluation, development and optimization, has worked with Avasthi & Associates, Inc. (A&A) as a Principal EOR/IOR Reservoir Engineering and Simulation, CO₂ EOR, and Unconventional/ Shale Resources Evaluation, Development and Optimization Consultant since 2014, and provides consulting and training services in his areas of technical expertise.

Mr. Banthia has over 45 years of worldwide oil & gas industry experience, having worked with several oil & gas producing companies (Mobil Oil, Saudi Aramco, Fina, EOG, Oil India, and ONGC), and consulting companies. He is an expert in the Middle Eastern oil fields, as he worked for several years with Saudi Aramco. His extensive industry experience includes working on major CO₂ EOR, waterflood optimization, reservoir engineering and simulation, and, onshore and offshore, oil & gas field development planning and management projects, around the world. For more than 15 years, he was consultant to Shell on Eagle Ford, Utica, and Vaca Muerta (Argentina) Shale resources evaluation, development and optimization, and to Devon on Utica, Niobrara, and Tuscaloosa-Marine Shale (TMS) resources evaluation, development and optimization projects.

Mr. Banthia is a petroleum engineering alumnus of the Indian Institute of Technology (Indian School of Mines) and the University of California, Berkeley, where he earned Bachelor’s and Master’s degrees, respectively. He also holds a Master’s degree in Engineering Management from Missouri University of Science & Technology, Rolla. He is a licensed Professional Engineer (P.E.) in Texas, and a long-standing member of SPE and SPWLA. He has made numerous presentations at technical meetings, and published several papers in technical journals in his areas of technical expertise.

Mr. Daniel Mujica, a seasoned geophysicist and seismic interpretation expert, is a Principal Geophysical and Seismic Interpretation Consultant at Avasthi & Associates, Inc. (A&A), and provides consulting and training services in his areas of his technical expertise: quantitative seismic interpretation, seismic pore pressure prediction, pore pressure modeling, and wellbore stability analysis.

Mr. Mujica’s over 27 years of worldwide geophysical and seismic interpretation experience includes working with Chevron, Saudi Aramco, Tricon Geophysics, CGG, Paradigm Geophysical, and PDVSA. He is an expert in the Middle Eastern oil fields, as he worked for several years in Saudi Arabia. His expertise includes geophysical exploration risk Analysis, geological velocity model building, seismic imaging, AVO, AVA, seismic inversion, quantitative interpretation, pore-pressure/ fracture gradient (FG), and wellbore stability (WBS) geomechanics. He is highly experienced in the use of popular seismic interpretation software packages, including, but not limited to, Paradigm’s Epos suite and Jason’s seismic inversion software. He has worked on seismic pore pressure projects as well as on 3-D quantitative seismic interpretation, integrating available rock physics models to 3-D prestack seismic data for the prediction of lithology and pore fluids for siliciclastic and carbonates depositional systems. He has taught several training courses on seismic inversion, seismic imaging, and other topics in his areas of technical expertise. He has extensive experience in geophysical exploration, risk analysis, production and exploitation of hydrocarbons, has proven skills to find, predict, and extract oil and gas from existing fields as well as search for potential new targets, and has been a leader of several technological studies to define new prospects with potential reserves in oil and gas fields. He is well versed in estimating and integrating pore pressure models and wellbore stability analysis into mud weight operational windows for pre-drill design, execution, and post-drill analysis of range of well types. He has collaborated with, contributed to, and led many projects in the regions of South Africa, China, North America, South America, Saudi Arabia, and Mexico. 

Mr. Mujica is an alumnus of Universidad Simon Bolivar, and Stanford University (where he earned a M.S. degree in Geophysics). He has authored/ co-authored several technical papers in his areas of technical expertise.

Mr. Mujica is bi-lingual in English and Spanish, and has taught industry training courses, in these languages, on several topics in his areas of technical expertise. 

Mr. Bob Hall, a well completion and stimulation/ fracturing expert, has worked with Avasthi & Associates, Inc. (A&A) since 2008 as Principal Well Completion and Stimulation/ Fracturing Consultant, and provides consulting and training services in his areas of technical expertise.

Mr. Hall has over 40 years of worldwide oil & gas industry experience, including seven years with Chevron in developing, designing and supervising stimulation and completion procedures, techniques and manuals; and developing and teaching training courses. He also worked with a number of service companies [Halliburton (for 15 years), Western (for 6 years), and BJ (for 2 years)] in senior staff, supervisory and managerial positions. Now he is involved in developing state-of-the-art chemicals for stimulation and production applications, besides consulting in his areas of technical expertise (fracturing stimulation and completion). He has taught a number of short courses, and conducted hands-on training workshops, around the world, in his areas of technical expertise.

Mr. Hall is a co-instructor of the following customized training workshop conducted by A&A at the request of its clients, at their offices around the world, whenever mutually convenient: 

·      Hydraulic Fracturing, and Hydraulic Fracturing Quality                Control (5-day workshop)

The outline of this customizable state-of-the-art training workshop is available on request from A&A.

Mr. Hall is an alumnus of Oklahoma State University, where he earned a B.S. degree in Chemistry. He is a long-standing member of the Society of Petroleum Engineers (SPE), and has authored/co-authored a number of technical publications and U.S. patents.

Mr. John Harris, a seasoned geologist and geomodeler, has worked with Avasthi & Associates, Inc. (A&A), since 2014, as a Principal Geological and Geomodeling/ Static Modeling Consultant, and provides consulting and training services in his areas of technical expertise, that includes, but is not limited to, geological/ static model development to support economic evaluation, reserves, well planning and reservoir simulation.

Mr. Harris has over 18 years of oil and gas industry experience in petroleum geology, prospect development, geological/ static modeling, geo-statistics, structural geology, reserves estimation, asset evaluation, and GIS database development, having worked with Texaco, Plains Exploration and Production, Oxy/ Vintage Production California, Venoco, and Aera Energy, and as a geological and geomodeling/ static modeling consultant.

Mr. Harris has extensive experience in geological analysis and geomodeling/ static modeling (using Petrel, Gocad, and Earthvision software), and has strong skills in quantitative geology, structural geology, field mapping, reservoir analysis, model up-scaling, and volumetrics for fluid-flow simulation. His extensive geological modeling/ static modeling experience includes integration of seismic interpretation, subsurface mapping, and petrophysical modeling to develop well plans, reserves estimation, uncertainty analysis, and economics. His geomodeling/ static modeling experience includes working on major deepwater field development projects in the Gulf of Mexico and the North Sea.

Mr. Harris is an alumnus of the University of Michigan (where he earned a M.S. degree in Geology), and the University of New Hampshire (where he earned a B.S. degree in Geology). He is a long-standing member of the American Association of Petroleum Geologists (AAPG), Geological Society of America (GSA), and International Association of Mathematical Geology.

Mr. Michael Weathrel, P.E., is the Principal Drilling and Well Completions Engineering Consultant at Avasthi & Associates, Inc. (A&A), and is active in providing consulting and training services in his areas of technical expertise.  

Mr. Weatherl has 35 years of worldwide oil & gas industry experience, in drilling engineering technologies and practices, including 21 years with Chevron Corporation, 7 years with Hess Corporation, and 7 years in consulting, working on on-shore and offshore drilling and completion projects. His expertise includes well planning, decommissioning, and providing operational support for major domestic and international drilling projects. He has been coordinator of well support projects for new ventures, and of unconventional shale resources (horizontal drilling) projects.

Mr. Weathrel has taught short courses, and conducted hands-on training workshops, in his areas of technical expertise.

Mr. Weathrel is an engineering alumnus of the University of Tulsa  (where he earned a Bachelor’s degree in Petroleum Engineering). Before joining A&A he worked for several years in senior-level advisory and supervisory positions on onshore and offshore drilling projects at Chevron and Hess Corporations, and in consulting.  He is a long-standing member of the Society of Petroleum Engineers (SPE), a technical editor of the SPE Journal of Petroleum Technology (JPT), a Registered Professional Engineer (P.E.), and a member of the American Association of Drilling Engineers (AADE).

Mr. Rajan Rekhi, P.E., a subject matter expert (SME) in offshore mechanical and structural engineering with extensive experience in design and analysis of topside structures and components, including drilling rigs, has worked with Avasthi & Associates, Inc. (A&A), since 2017, as Principal Offshore Mechanical and Structural Engineering Consultant. 

Mr. Rekhi has more than 25 years of oil & gas industry experience in project management, engineering management, facilities engineering and structural engineering of onshore and offshore (deep water), drilling and production, oil & gas platforms/ structures (Spars, Semi-Submersibles, Jack-Up Rigs, Drilling Rigs, Fixed Platforms and Topsides Decks for Fixed & Floating Platforms including FPSOs).  He has worked on all project phases (R&D, Pre-FEED/conceptual, FEED, detailed engineering, installation & construction support).

Mr. Rekhi, using state-of-the-art technologies, has worked on world-class projects (of up to multi-billion dollars) and has achieved client satisfaction, top project quality, reduced risk, while maintaining highest safety standards and keeping-up with tight budgets and schedules. He has experience working with major international EPC companies (Bechtel, Technip, Wood Group, WorleyParsons) as well as major international operators/ oil & gas companies.  His experience includes working on both greenfield and brownfield projects. 

Mr. Rekhi’s technical specialties include, but are not limited to, onshore & offshore structural engineering, oil & gas full field development (FFD), topsides/ facilities engineering & design, engineering management, project management, installation & construction support, and third-part reviews and verifications.

Mr. Rekhi holds a Bachelor’s degree in Mechanical Engineering from the University of Texas at Arlington, and a Master’s degree in Mechanical and Structural Engineering from the University of Houston.  He is a licensed Professional Engineer (P.E.) in Texas, and a member of the Project Management Institute (PMI).

Mr. Rekhi is instructor/co-instructor of the following customized training workshops on offshore projects conducted by A&A at the request of its clients, at their offices around the world:

•  Offshore EOR Projects: Topsides/ Surface Facilities Aspects
•  Offshore Projects: Topsides Weight Management
•  Offshore Projects: Topsides Layout & Structural Design
•  Offshore Projects: FPSO Topsides Layout & Structural Design