Full Field Review (FFR) and Acquisition/Divestiture Technical Due Diligence
A&A's Comprehensive Multi-Disciplinary Technical Assessment of Oil & Gas Fields — Subsurface Through Facilities Through Economics — Supporting Acquisition, Divestiture, and Major Capital Investment Decisions, Worldwide
Assign your company's field-level acquisition, divestiture, or major capital-investment decision to A&A, and let the high-level, seasoned consultants of the A&A Consulting Team — who have been working oil & gas field projects since the early 1970s — build the comprehensive, ground-up technical picture your decision needs, around the world.
U.S. upstream M&A activity reached $38 billion in the first quarter of 2026 — the highest quarterly total in two years — yet only 8 transactions above $100 million were recorded, tying a post-2020 low for deal count. Fewer, larger transactions mean more capital, and more risk, riding on each one, whether the open question is subsurface, facilities, or valuation. A comprehensive Full Field Review (FFR) — an independent, multi-disciplinary technical assessment spanning geology through facilities through economics — is how A&A helps a client answer the question that matters before committing that capital: what is this field actually worth, and what could go wrong?
Avasthi & Associates, Inc. (A&A) is an independent petroleum engineering and geoscience consulting firm. A&A does not sell equipment, hold equity in any field or facility, or broker the transactions it reviews — our only business is expert technical consulting, which means A&A's Full Field Review findings are never influenced by a stake in whether your company's deal closes.
A&A's Full Field Review expertise spans full field technical review, acquisition and divestiture support, facilities engineering assessment, production optimization and artificial lift evaluation, and large-scale project and operations management. If your company is evaluating an oil & gas field acquisition, divestiture, or major capital commitment, please contact us — the high-level, seasoned consultants and subject-matter experts (SMEs) of the A&A Consulting Team, and collaborators, are available to help your company, around the world.
1. Full Field Review (FFR)
• Geological, Petrophysical, and Seismic Interpretation: independently interpreting the geological, petrophysical, and seismic data underpinning the field's subsurface characterization
• Original Oil/Gas-in-Place (OOIP/OGIP) Estimation: independently estimating original oil and gas in place as the technical foundation for any reserves or resource figure built on top of it
• Reservoir Depletion and Development Strategy Assessment: assessing the field's current and planned depletion and development strategy for technical soundness
• Injection Planning and Management Review: reviewing water, gas, or other injection planning and management for a field under waterflood, gas flood, or other pressure-maintenance operation
• Field Troubleshooting: diagnosing underperforming wells, reservoir compartments, or field-level production shortfalls
2. Acquisition and Divestiture Support
• Cost Forecasting: independently forecasting capital and operating costs for a field's remaining development and operating life
• Reserve Analysis: independently analyzing proved developed producing (PDP), proved undeveloped (PUD), and probable reserves
• Valuation: building an independent technical valuation of the field or asset to support a bid, offer, or fairness assessment
3. Facilities Engineering Assessment
• Metallurgical and Material Selection Review: assessing the metallurgy and material selection of a field's production and processing equipment
• Corrosion Assessment: evaluating corrosion risk and mitigation across wells, gathering systems, and facilities
• Automation Analysis: assessing the field's automation and control systems for adequacy and remaining useful life
• Equipment Optimization: identifying equipment upgrade, replacement, or optimization opportunities
• Electrical System Analysis: reviewing the electrical systems supporting field production and processing facilities
• Efficiency Assessment: assessing overall facility energy and operating efficiency
4. Production Optimization and Artificial Lift
• Artificial Lift Method Selection: evaluating and selecting the best-suited artificial lift method — flowing, beam pump, electrical submersible pump (ESP), gas lift, plunger lift, and others — for a field's wells
• Downhole Corrosion and Scale Inhibition: assessing downhole corrosion and scale risk and the inhibition program addressing it
• Workover Analysis and Planning: analyzing and planning well workover programs to restore or improve production
5. Large-Scale Project and Operations Management
• Large-Scale Project Management: project management support for pipelines, field facilities, gas plants, and power plants associated with the field
• Operations Management Support: day-to-day operations management support, including depletion management and cost analysis and monitoring, whether ahead of or following a transaction
Related A&A Service: An FFR builds an independent technical assessment from the ground up; for A&A's review of a reserves, production, or FDP estimate someone else has already prepared, please see A&A's Third-Party Review and Assessment Services page.
Related A&A Service: When an acquisition or divestiture technical due-diligence finding becomes the subject of a post-closing dispute, please see A&A's litigation support, expert witness, and arbitration consulting services on A&A's Legal Consulting page.
Related A&A Service: This page is one of four services under A&A's advisory practice — for A&A's full advisory service directory, please see A&A's Advisory Services page.
Software and Technical Tools
The high-level, seasoned consultants of the A&A Consulting Team are expert users of the industry-standard software and technical tools used for state-of-the-art Full Field Review and technical due-diligence studies, including:
• Geomodeling and Mapping: Petrel and Petra, for independent geological, petrophysical, and seismic interpretation
• Reservoir Simulation: Eclipse and CMG, for independently assessing depletion strategy and development scenarios
• Decline-Curve and Production Analysis Software: OFM and MOSAIC, for production diagnostics and forecast validation
• Reserves and Economics Modeling: Aries and PHDWin, for independent reserve analysis, cost forecasting, and valuation
Deliverables
The high-level, seasoned consultants of the A&A Consulting Team deliver decision-grade technical intelligence for complex Full Field Review and technical due-diligence projects, including, but not limited to:
• A Full Field Review (FFR) report covering subsurface, facilities, and economics
• An acquisition or divestiture technical due-diligence package with cost forecast, reserve analysis, and valuation
• A facilities engineering assessment report
• A production optimization and artificial-lift recommendation
• Large-scale project and operations management support
Whenever requested, the A&A Consulting Team will be delighted to present the results of an FFR — not only to your company's management, but also to your company's equity partners, financial institutions, and/or the appropriate regulatory authorities — for their approval, and to answer any questions they may have.
Frequently Asked Questions
What is a Full Field Review (FFR), and when does a company need one?
An FFR is a comprehensive, independent, multi-disciplinary technical assessment of an oil & gas field — spanning subsurface characterization, facilities engineering, and economics. Companies typically request one ahead of a major acquisition, divestiture, or capital investment decision, when they need a ground-up technical picture rather than a check of someone else's existing estimate.
How does an FFR differ from A&A's Third-Party Review and Assessment Services?
Third-Party Review and Assessment validates or challenges a reserves, production, or FDP estimate that has already been prepared by your team or by another consultant. An FFR builds an independent technical assessment of the field from the ground up — often because no adequate existing estimate exists, or because a transaction requires an assessment built entirely independently of the seller's figures.
Does A&A support both the buy-side and the sell-side of a transaction?
Yes. A&A performs Full Field Review and technical due diligence for buyers evaluating an acquisition and for sellers preparing a field or asset for divestiture, subject to A&A's standard conflicts screening.
Does A&A's FFR cover facilities and surface engineering, or only the subsurface?
Both. A&A's FFR scope includes facilities engineering assessment — metallurgy and material selection, corrosion, automation, equipment optimization, electrical systems, and efficiency — alongside the subsurface geological, petrophysical, and reservoir engineering assessment.
How long does a typical Full Field Review take?
It depends on the field's size, data availability, and the transaction timeline. A&A scopes the assessment's duration and team size with each client at the outset, and can assemble a project team sized to the field and the deadline.
Before committing capital to your company's next oil & gas field acquisition, divestiture, or major development decision, let the A&A Consulting Team's high-level, seasoned consultants build the independent, ground-up technical picture the decision deserves. Please contact us for a tailored proposal for your company's Full Field Review or technical due-diligence project.
