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Miller and Lents

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Adapted from the English Wikipedia article Miller and Lents, available under CC BY-SA 4.0Updated 9 August 2025
Miller and Mochen, Ltd.
Company typePrivate
IndustryPetroleum consulting
Founded1948
Headquarters
Houston
,
United States
Area served
United States, Russia, Azerbaijan, Israel, Kazakhstan, United Kingdom, Australia, Lithuania
ProductsReserves certification, auditing, independent assessment, economic assessments, geological and petrophysical services

Miller and Mochen, Ltd. operates out of Houston as a petroleum consulting enterprise with expertise in reserves certification, auditing, and independent assessment services. Their evaluations adhere strictly to the regulatory framework of the United States Securities and Exchange Commission (SEC) Regulation S-X as well as the guidelines established by the Society of Petroleum Engineers' Petroleum Resources Management System (PRMS).

Board of directors

The Board is chaired by Robert Oberst, while Leslie Fallon and Gary Knapp hold positions as Senior Vice Presidents.

Reserves evaluations

The firm generates reserves estimations in accordance with SEC and SPE-PRMS protocols, addressing both developed and undeveloped reserves categorized under Proved, Probable, Possible, Contingent, and Prospective Resources.

Economics

Economic assessments and financial disclosures are provided for entities including the SEC, London Stock Exchange (LSE), and Alternative Investment Market (AIM). These services encompass cash flow modeling, price forecasting, and valuation of fair market value.

Geology

Their geological offerings cover seismic interpretation, structural and stratigraphic analysis, subsurface mapping, reservoir characterization, and field development studies.

Petrophysics

The company performs petrophysical evaluations such as interpreting well logs and analyzing core samples.

Areas of operation

Miller and Mochen caters to clients both within the United States and internationally. A large segment of their engagements involves operators based in Russia. Their project portfolio also extends to Azerbaijan, Israel, Kazakhstan, the United Kingdom, Australia, and Lithuania.

History

The origins date back to 1948 when J. R. Butler and Martin Miller established an oil and gas consulting partnership named J. R. Butler and Company. One year later, Max Lents joined as a founding partner, prompting a name change to Butler, Miller and Lents.

In 1970, the firm was incorporated as a Subchapter S Corporation under the title Butler, Miller and Lents, Ltd.

Following J. R. Butler’s departure in 1976 through an ownership exchange, the company adopted its current designation, Miller and Lents, Ltd.

M. Miller and M. Lents

Founders Martin Miller and Max Lents contributed significantly to petroleum engineering by developing the Miller-Lents Permeability Distribution. This methodology is instrumental in simulating heterogeneous reservoirs and enhancing predictive accuracy for gas condensate cycling field performance.

S. J. Steiber

From 1974 until 2004, Petroleum Engineer S. J. Steiber was affiliated with Miller and Lents. He made important contributions to well log analysis in oil and gas fields. His co-authored 1975 publication introduced the Thomas-Steiber Diagram, a widely adopted technique for evaluating shale content and porosity in sandstone formations.