What We Do

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Netherland, Sewell & Associates, Inc. (NSAI) provides a complete range of geological, geophysical, petrophysical, and engineering services and has the technical experience and ability to perform these services in any of the onshore and offshore oil and gas producing areas of the world.

We appreciate our clients and will do our best to get you what you need, when you need it. Our clients consistently receive superb service and reliable, respected reports. We expect to exceed your expectations.


Click on any of the services listed below for more information.

arrow Acquisition and Divestiture Evaluations
arrow Coalbed Methane Development Studies
arrow Deepwater Development Studies
arrow Enhanced Recovery Projects
arrow Equity Determinations
arrow Gas Storage Development Studies
arrow Modeling and Simulation
arrow Non-U.S. Regulatory Agency Reports
arrow Operations Engineering Services
arrow Pipeline Supply Studies
arrow Project Finance Certification
arrow Prospective Resources Assessments
arrow SEC Reserve Reports and Audits
arrow Shale Oil and Gas Evaluations












Disciplines and Capabilities

Our technical staff is intimately familiar with the recognized industry reserve and resource definitions, specifically those set forth by (1) U.S. Securities and Exchange Commission Regulation S-X Rule 4-10(a), (2) the 2007 Petroleum Resources Management System approved by the Society of Petroleum Engineers, and (3) the Society of Petroleum Evaluation Engineers (Calgary Chapter) and Canadian Institute of Mining, Metallurgy & Petroleum (Petroleum Society). We employ deterministic methods to estimate reserves for most evaluations and also utilize stochastic methods to determine probabilistic estimates of reserves for many exploration studies, early field development projects, and large field developments.

Click on any of the items listed below to learn more.

arrow Geology and Geophysics
arrow Petrophysics
arrow Engineering
arrow Economics
arrow Hardware and Software Capabilities