- Ortega IPC (Ecopetrol operator 31%, Maurel & Prom 69%)

The Ortega Sur well, drilled in the Ortega Incremental ProductionContract, signed with Ecopetrol S.A. and located in the Upper MagdalenaValley, 250 km south-west from Bogota, has reached three hydrocarbon-bearingintervals from Caballos and Tetuan Formations.

Three selective tests in Middle & Upper Caballos and Tetuan, resulted ina gas production of 2.5 million cubic feet per day, 3.0 million cubic feetper day and 2.0 million cubic feet per day respectively, for a total estimateproduction of 7.5 million cubic feet per day equivalent to 1,350 boepd.Maurel & Prom net production (entitlement) after royalties represents anestimate of 4.76 million cubic feet per day equivalent to 857 boepd.

Maurel & Prom, through its wholly owned subsidiary Hocol S.A., holds 69%of this contract that carries royalties of 8% and Ecopetrol, operator, holdsthe remaining 31%.

This gas well will support Maurel & Prom gas sales project in Colombiawith Don Pedro and Monserrate Field. This well can be connected to Santa-Ritagas production facilities by the end of the year.

Exploration Update

Cocli NE well has been plugged and abandoned.

This press release may contain forward-looking statements with respect tothe financial condition, results of operations, business, strategy and plansof Maurel & Prom. By their nature, forward-looking statements involve risksand uncertainties because they relate to events and depend on circumstancesthat will or may occur in the future. These forward-looking statements arebased on assumptions which we believe are reasonable but that couldultimately prove inaccurate and are subject to a number of risk factors,including but not limited to price fluctuations in crude oil; exchange ratefluctuations; uncertainties inherent in estimating quantities of oilreserves; actual future production rates and associated costs; operationalproblems; political stability; changes in laws and governmental regulations;wars and acts of terrorism or sabotage.

Maurel & Prom is listed on Euronext Paris - compartment A - CAC mid 100 Index Isin FR0000051070 / Bloomberg MAU.FP / Reuters MAUP.PA Agenda 2008 Monday August 4, 2008 First Half Sales 2008 Friday August 29, 2008 Publication First Half Results 2008 Thursday September 11, 2008 Analyst meeting Tuesday November 4, 2008 Third Quarter Sales 2008 Press releases to be distributed on each of the abovementioned days before the markets open Investor Relations Laurence Borbalan Tel. : +33-1-47-03-68-58 Mob. : +33-6-79-44-66-55 Laurence.Borbalan@fd.com Press Relations Michelle Aubert Tel. : +33-1-47-03-68-61 Mob. : +33-6-85-34-45-94 Michelle.Aubert@fd.comSOURCE Maurel & Prom