Lithium (DLE) Consulting
A&A Consulting Services for Lithium Brine Resource Assessment, Direct Lithium Extraction (DLE) Technology Screening, Well Engineering, and Project Development — Worldwide
Assign your company's most challenging Lithium and Direct Lithium Extraction (DLE) projects to A&A, and let the high-level, seasoned Lithium consultants of the A&A Consulting Team find the most appropriate solutions for you, around the world.
Lithium has moved to the center of U.S. critical-minerals policy. On March 20, 2025, President Trump signed the executive order Immediate Measures to Increase American Mineral Production, directing expedited permitting for priority domestic mining and mineral-processing projects and expanded Defense Production Act and International Development Finance Corporation financing for domestic mineral production — creating a materially more favorable investment climate for U.S. Lithium and DLE projects. The International Energy Agency's Global Critical Minerals Outlook 2025 projects that global lithium demand will grow roughly fivefold from today to 2040 under its Stated Policies Scenario, driven overwhelmingly by electric-vehicle and battery-storage deployment, and that mined lithium supply from currently announced projects could fall short of that demand by as much as 40% by 2035. Direct Lithium Extraction (DLE) is central to closing that gap: life-cycle studies estimate that brine-based lithium extraction — the category DLE belongs to and improves on — produces on the order of a fifth of the carbon emissions of hard-rock lithium mining, a combination of speed-to-market and lower carbon intensity that is driving the current wave of DLE investment.
Avasthi & Associates, Inc. (A&A) is an independent petroleum engineering and geoscience consulting firm. A&A does not sell DLE technology, sorbents, membranes, processing equipment, or lithium products — our only business is expert technical consulting, which means A&A's Lithium and DLE recommendations are never influenced by a stake in any particular technology, vendor, or offtake arrangement.
If your company needs Lithium brine resource assessment, DLE technology screening and selection, brine reservoir characterization and well engineering, feasibility studies, or full Lithium/DLE project development support, please contact us — A&A's high-level, seasoned Lithium consultants bring more than five decades of subsurface brine, reservoir, and produced-fluids engineering experience from the oil & gas industry directly to bear on your project.
Read more below how the high-level, seasoned Lithium consultants of the A&A Consulting Team can help your company on its challenging Lithium and DLE projects, around the world — from Lithium exploration and Direct Lithium Extraction (DLE) process selection, through feasibility studies, to full project development:
Related A&A Service: This page is one of nine services under A&A's broader energy transition practice — for A&A's full energy storage, hydrogen, ammonia, lithium, and geothermal service directory, please see A&A's Energy Transition & Decarbonization Consulting page.
1. Lithium Resource Assessment and Brine Characterization
• Regional and Basin-Scale Lithium Resource Evaluation: conducting large-scale Lithium brine resource assessments for a country, basin, or specific project area
• Brine Geochemistry and Grade Characterization: characterizing lithium concentration, brine chemistry, and grade distribution, including problematic co-constituents such as magnesium, boron, and sulfate that affect DLE technology selection
• Aquifer/Reservoir Characterization: applying petroleum-engineering-grade reservoir characterization — porosity, permeability, and hydraulic connectivity — to the host brine aquifer
• Resource classification, using internationally recognized reporting frameworks adapted for brine resources
• Hydrogeological modeling and brine-flow simulation
• Identification of drilling targets and well-siting
• Exploration program design
2. Direct Lithium Extraction (DLE) Technology Screening and Selection
• Technology Landscape Screening: independent, vendor-neutral screening across the major DLE technology families — ion exchange, adsorption, solvent extraction, and membrane-based processes
• Brine-to-Technology Fit Assessment: matching a specific brine chemistry to the DLE technology, or combination of technologies, best suited to it, since no single DLE technology performs equally well across all brine chemistries
• Pilot Program Design: designing and overseeing bench- and pilot-scale DLE testing programs to validate recovery rate, selectivity, and reagent/water consumption before a technology is committed to at full scale
• Lithium recovery-rate and selectivity evaluation
• Reagent, water, and energy consumption assessment
• Technology-vendor and licensing due diligence
• Brine reinjection and disposal strategy
3. Brine-Field Engineering and Well Design
• Production and Injection Well Design: engineering Lithium brine production and reinjection wells, adapting proven oil & gas well-design practices to brine service
• Wellfield Development Planning: designing wellfield layout, spacing, and phased development, to sustain long-term brine production rates
• Brine Handling and Surface Facilities Integration: integrating wellfield production with DLE plant feed requirements and brine reinjection systems
• Well testing and injectivity/productivity analysis
• Corrosion, scaling, and materials-of-construction evaluation for brine service
• Workover and well-integrity planning
4. Reservoir and Brine-Flow Simulation
• Numerical Brine Reservoir Simulation: simulating long-term brine production and pressure response, using industry-standard reservoir-simulation software
• Wellfield Sustainability Forecasting: forecasting brine production decline and long-term wellfield sustainability under alternative development scenarios
• Reinjection Impact Modeling: modeling the impact of depleted-brine reinjection on reservoir pressure and long-term resource sustainability
• History matching of pilot and early-production data
• Uncertainty and sensitivity analysis
• Resource and reserve estimation
5. Project Development, Feasibility, and Technical Advisory
• Technical and Economic Feasibility Studies: preliminary and detailed feasibility studies covering resource, technology, and project economics
• Financial and Economic Modeling: CAPEX/OPEX modeling, cost-per-tonne-of-lithium-carbonate-equivalent (LCE) analysis, and investment risk assessment
• Investor-Grade Technical Due Diligence: independent technical due diligence for investors, partners, and lenders considering a Lithium/DLE investment
• Environmental and permitting evaluation, including brine disposal and water-use considerations
• Offtake and marketing strategy support
• Risk assessment, mitigation planning, and phased development strategy
6. Advanced and Adjacent Applications
• Geothermal Brine Co-Production: evaluating combined lithium-and-heat recovery from geothermal brines — an emerging pathway pairing A&A's Geothermal and Lithium/DLE practices
• Oilfield Brine and Produced-Water Lithium Recovery: evaluating lithium-recovery potential from oilfield produced water and brine, where A&A's oil & gas reservoir and produced-fluids expertise applies directly
Related A&A Service: For A&A's full geothermal energy resource assessment and reservoir engineering services — directly applicable to a combined geothermal-and-lithium co-production project — please see A&A's Geothermal Energy Resources Assessment & Development Consulting page.
Related A&A Service: For A&A's full produced water characterization, disposal-well engineering, and beneficial-reuse services — directly applicable to an oilfield brine lithium-recovery project — please see A&A's Produced Water Management Consulting page.
Software and Technical Tools
The high-level, seasoned Lithium consultants of the A&A Consulting Team are expert users of the industry-standard software and technical tools used for state-of-the-art Lithium brine resource assessment and reservoir engineering studies, including:
• Petrel: for 3D geological and static reservoir modeling of the host brine aquifer
• MODFLOW / FEFLOW: for hydrogeological and brine-aquifer flow modeling
• PHREEQC: for brine geochemistry and hydrogeochemical modeling
• TOUGH2 / CMG-GEM: for coupled reservoir and brine-flow simulation
• CMOST / PEST: for history matching, sensitivity analysis, and uncertainty quantification
• Python and MATLAB: for geochemical data analytics and process optimization
Deliverables
The high-level, seasoned Lithium consultants of the A&A Consulting Team deliver decision-grade technical and commercial intelligence for complex Lithium and DLE projects, including, but not limited to:
• Full technical studies — resource assessment, brine characterization, DLE technology screening, and well engineering
• Simulation-driven wellfield development planning
• Technology and pilot-program screening and design
• Integrated techno-economic evaluation and risk analysis
• Independent technical due diligence for investors and lenders, and high-quality final reports and executive presentations
To put the high-level, seasoned Lithium consultants of the A&A Consulting Team to work on your company's challenging Lithium and DLE projects, around the world, please contact us.
Frequently Asked Questions
What is Direct Lithium Extraction (DLE), and how is it different from traditional lithium mining?
DLE selectively extracts lithium directly from brine — using ion exchange, adsorption, solvent extraction, or membrane-based processes — rather than concentrating brine in large evaporation ponds over many months, or crushing and processing hard rock ore. DLE is generally faster, has a smaller land and water footprint, and produces lower carbon emissions than either alternative, which is driving the current wave of DLE investment.
Which DLE technology is best for our brine?
It depends on your brine's specific chemistry — lithium concentration, and the concentration of competing ions such as magnesium, boron, and sulfate — since no single DLE technology performs equally well across all brine chemistries. A&A's technology-screening and pilot-program design services are built to match a technology, or combination of technologies, to your specific resource, rather than starting from a preferred vendor or technology.
Does A&A's oil & gas well-engineering experience really translate to lithium brine wells?
Yes. Lithium brine production and reinjection wells face many of the same engineering challenges as oil & gas wells — reservoir characterization, well design and completion, corrosion and scaling management, injectivity/productivity testing, and long-term wellfield sustainability — and A&A's consultants apply more than five decades of that oil & gas subsurface and well-engineering experience directly to brine service.
Can A&A help evaluate lithium recovery from geothermal brine or oilfield produced water?
Yes. A&A's Lithium consultants work alongside A&A's geothermal and reservoir engineering consultants on combined lithium-and-heat co-production from geothermal brines, and on evaluating lithium-recovery potential from oilfield produced water and brine — please see A&A's Geothermal Energy Resources Assessment & Development Consulting page for A&A's full geothermal reservoir engineering services.
Does A&A sell DLE technology or equipment?
No. A&A is an independent petroleum engineering and geoscience consulting firm and does not sell DLE technology, sorbents, membranes, processing equipment, or lithium products, so A&A's recommendations are never influenced by a stake in any particular technology, vendor, or offtake arrangement.
Can A&A support just the resource-assessment phase of our project, or the whole lifecycle?
Both. Many A&A clients engage A&A across the full lifecycle — from resource assessment and DLE technology screening, through well engineering and reservoir simulation, to feasibility studies and project development — while others engage A&A for a single phase, such as an independent technical due-diligence review for an investment decision. A&A's Lithium/DLE services are designed to work together, but each stands on its own.
