Maurel & Prom: Update on Activities in Nigeria and Gabon

Update on Production in Nigeria

PARIS, January 5, 2011 - NIGERIA

In Nigeria, operated production levels (oil + condensate)
varied between 15,000 boepd and 30,000 boepd (with 20.25% attributable to
Maurel & Prom) during the fourth quarter of 2010. This fluctuation was due to
technical issues linked to production starting up again after the fields had
been shut down for 15 months.

Two lifting took place during the fourth quarter of 2010 for a
total of 1.1 million barrels for the SEPLAT share (with 45% attributable to
Maurel & Prom).

Gas production is currently 95 million cubic feet per day. The
purchase price is rising and should reach the international prices end of
2012. The immediate production capacity of the fields is 40% greater than
current level; production being temporarily limited because of maintenance
work in progress on the electric plant supplied.

GABON

ONAL AEE (operator, 85%)

Maurel & Prom is announcing the positive result of the
OMOC-N-501 and OMOC-103 delineation wells in the Onal AEE.

The wells have shown a height respectively impregnated with
oil of 32 m on OMOC-103 m and 9 m on OMOC-N-501.

The drilling of these wells, targeting the Kissenda Sandstone
(Gres du Kissenda), is part of the OMOC-North field delineation programme
which, in addition to the discovery well (OMOC-N-101), included plans to
drill six appraisal wells (OMOC-N-201, OMOC-N-301, OMOC-N-302, OMOC-103,
OMOC-N-501 and OMOC-N-601).

The findings from these wells confirm that the reserves extend
into the Kissenda on this part of the field where the production of the wells
should be 500 boepd in average.

The predominantly Gres de Base wells (OMOC-N-301 and
OMOC-N-302) were connected up to the oil pipeline serving the Onal platforms
(in blue) on 15 December 2010.

The predominantly Kissenda wells which have already been
drilled and the future OMOC-N-601 well - to be drilled during the first
quarter of 2011 - will be connected up to the production centre via a new
pipeline, which is going to start to be laid (in red on the map).

Alongside this, the Group is assessing the OMOC field
discovered in March 2009 with the OMOC-101 well to the south of ONAL. With
this in mind, the OMOC-102 well and the drilling of the OMOC-201 well will
resume during the first quarter of 2011.

Following this work, the wells will be connected up to the
OMOC-North pumping facilities from the second quarter of 2011.

On 17 December 2010, exclusive development authorisation
obtained for the Gwedidi (OMGW) and M'Bigou (OMBG) fields

Maurel & Prom owns 100% of the interests in these two fields,
on which the company Tulipe Oil has a 15% back-in right, which would take
Maurel & Prom's interest down to 85%.

Group production in Gabon

The Group's production in Gabon, which peaked at 20,198 boepd
on 31 December 2010, was affected during the fourth quarter of 2010 by more
maintenance work being carried out than planned on the pumps for wells in the
Onal field, as well as water injection starting up on the Omko field, work
carried out to optimise surface facilities on the Gwedidi field and the
connecting up of the two OMOC-N-301 and OMOC-N-302 wells.

As a result, the level of production in Gabon averaged out at
16,900 boepd for the fourth quarter of 2010.

                                   Next dates:

    3 February 2011 2010 full-year sales (after close of trading)

    31 March 2011 2010 full-year earnings (after close of trading)

    1 April 2011 Analyst presentations (10 am, Paris time)

    11 May 2011 General meeting (10 am, Paris time)

This document may contain forward-looking statements regarding
the financial position, results, business, and industrial strategy of Maurel
& Prom. By nature, forward-looking statements contain risks and uncertainties
to the extent that they are based on events or circumstances that may or may
not happen in the future. These projections are based on assumptions we
believe to be reasonable, but which may prove to be incorrect and which
depend on a number of risk factors such as, fluctuations in crude oil prices,
changes in exchange rates, uncertainties related to the valuation of our oil
reserves, actual rates of oil production and the related costs, operational
problems, political stability, legislative or regulatory reforms, or even
wars, terrorism or sabotage.

Maurel & Prom is listed on Euronext Paris - compartiment A -
CAC mid 100 Indice

Isin FR0000051070 / Bloomberg MAU.FP / Reuters MAUP.PA

    For more information, go to www.maureletprom.fr

    Contact:
    INFLUENCES
    Tel: +33-1-42-72-46-76
    Email: communication@agence-influences.fr

Contact: INFLUENCES, Tel: +33-1-42-72-46-76, Email: communication at agence-influences.fr