Harken Energy Provides Domestic Operations Update

Harken Energy Corp.

Harken Energy Corporation's subsidiary, Gulf Energy Management Company, released updated production figures and well completion status for its domestic oil and gas operations located onshore and offshore the Texas and Louisiana Gulf Coast, and its Coalbed Methane Prospects (CBM) located in Indiana and Ohio.

As of April 25, 2006, GEM's net domestic production rate was at approximately 7.8 million cubic feet equivalent of natural gas per day. Prior to the hurricanes, GEM's net domestic production rate was approximately 7.6 million cubic feet equivalent of natural gas per day.

"We are pleased to have surpassed the production levels achieved prior to the effects of the 2005 hurricane season," said GEM President Jim Denny.

The following field data updates the status of GEM's domestic operations through April 25, 2006:

Lapeyrouse Field, Terrebonne Parish -- Louisiana

GEM holds an average non-operated working interest of 8.2% in eight wells in this field. During the first quarter of 2006, GEM has participated in two additional workovers in the field. As a result of these activities, gross field production increased from 20 million to approximately 28 million cubic feet equivalent of natural gas per day. A ninth well, with first production in late March 2006, has experienced some increased water and is currently shut-in for a workover scheduled for May 2006. GEM holds an approximately 39% operated working interest in this ninth well.

Main Pass, Plaquemines Parish -- Louisiana

Production has been increased to approximately 475 gross barrels of oil per day (bopd). GEM has a 90% interest in Main Pass and is the field operator. During the third quarter of 2005, GEM completed a major overhaul and rebuild of an additional compressor for the field. Repair work on a second rental compressor damaged by the hurricane is now completed. Now that both compressors are operational, GEM plans to add additional wells to the gas lift cycle. Gross production for the field is expected to reach approximately 500 bopd after additional wells are gas lifted. GEM continues its geological and geophysical study in the area, utilizing its license to 21 square miles of 3D seismic data, covering the area held by production leases.

Raymondville Field, Willacy and Kenedy Counties -- Texas

During the first quarter of 2006, GEM participated in additional recompletions that resulted in a temporary increase in gross production for the field. As previously disclosed, it is expected that field production will resume its decline rate. Currently gross production for this field is approximately 8 million cubic feet equivalent of natural gas per day. GEM has an average 27% non-operated working interest in this field.

Lake Raccourci Field, Lafourche Parish -- Louisiana

GEM holds a 40% operated working interest in each of its Lake Raccourci wells. Gross production for this field is approximately 2.8 million cubic feet equivalent of natural gas per day. The State Lease 14589 #2 is currently shut-in, waiting on a workover rig scheduled for the second quarter of 2006. Upon completion of the workover, gross production is expected to return to about 5.0 million cubic feet equivalent of natural gas per day. GEM is presently seeking industry partners to drill a field extension well.

3D Seismic Licenses -- Louisiana

GEM continues to evaluate its seismic licenses covering approximately 155 square miles of 3D seismic data in three different surveys across south Louisiana. A number of leads have developed in this continuing study. The process of cataloging and prioritizing the seismic data is ongoing.

South Beach Field, Chambers County -- Texas

GEM has a non-operated working interest of 10% in this area. Gross production for this field is approximately 3.7 million cubic feet equivalent of natural gas per day.

Branville Bay Field, Plaquemines Parish -- Louisiana

This non-operated property remains 100% shut-in from the hurricanes in late 2005. Repairs to the production facility are underway and production is expected to resume early in the second quarter of 2006. GEM has a non-operated working interest of 12.5% in this area.

Point-a-la-Hache Field, Plaquemines Parish -- Louisiana

This operated property also remains 100% shut-in. Damages to this field principally affected a leased production barge facility. Repairs to the production barge are expected to be completed in April 2006. GEM maintains a 25% operated working interest in the area.

Point-au-Fer Field, Terrebonne Parish -- Louisiana

In 2005, GEM entered into a Participation Agreement and Joint Operating Agreement covering an area of mutual interest of approximately 56 square miles. In addition, during the fourth quarter of 2005, GEM participated in an acquisition of two wells with production potential, and a central facility. GEM owns a 12.5% non-operated working interest in the area. Two wells were drilled in the first quarter of 2006. The first well has been flow tested at about 2.75 million gross cubic feet equivalent of natural gas per day, and is waiting on hook-up to facilities. The second well has been logged productive and cased. A completion rig is expected in the second quarter of 2006. One workover and recompletion of an existing well is expected to commence in May 2006. A second workover is planned for the late second quarter of 2006. Several prospects have been identified in the area, and GEM expects to have additional drilling and workover activity in this area during 2006.

Allen Ranch Field, Colorado County -- Texas

GEM owns an 11.25% non-operated working interest in the area. The initial well, the Hancock Gas Unit # 1, was productive in four sands and has been producing approximately 2.5 million gross cubic feet equivalent of natural gas per day. As a result of the success with the first well, the Hancock Gas Unit # 2 was drilled in October 2005 as an offset to the first well. This second well was logged as productive in the same four sands as the Hancock Gas Unit # 1 well and two deeper zones were also logged as productive. The deeper of the two zones has been fracture stimulated and produced about 5.0 million cubic feet equivalent of natural gas per day. This zone has now been shut-in to test the other productive zone in the well bore and a temporary bridge plug was set above the sand to protect the zone while additional testing continues. The second zone has been perforated and is scheduled for fracture stimulation in late April 2006.

Coalbed Methane Prospects -- Indiana and Ohio

In 2005, GEM entered into two significant Exploration and Development Agreements in Indiana and Ohio. Each prospect provides for an area of mutual interest of approximately 400,000 acres. During the first quarter of 2006, GEM has entered into another Exploration and Development Agreement in Ohio. This prospect provides for an area of mutual interest of approximately 20,000 acres. In each case, the agreements provide for a phased delineation, pilot and development program with corresponding staged expenditures. Contracted third parties with a long track record in successful Coalbed Methane development are providing expert advice for these projects.

Indiana Prospect

In September 2005, after the submission of a Phase I core evaluation report by the technical consultant, GEM elected to proceed and fund pilot well drilling under Phase II of the agreement. Due to limited availability of needed equipment, GEM expects the drilling of the pilot wells to occur during the second quarter of 2006.

Ohio Cumberland Prospect

Core samples from the Ohio CBM prospect are being analyzed for gas content, gas composition and characteristics of the coal. Depending on final results, GEM may elect to schedule drilling of pilot wells on its Ohio CBM prospect area during 2006.

Ohio Triangle Prospect

Core samples are expected to be obtained on this third prospect late in the second quarter of 2006. Depending on final results of core analysis, GEM may elect to schedule drilling of pilot wells on this CBM prospect area during 2006.

Harken Energy Corporation is engaged in oil and gas exploration, development and production operations both domestically and internationally through its various subsidiaries.


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