Offshore Field Development Projects
Mercury Mercury
Operator:Anadarko
Water Depth:1,600 m / 5,280 ft
Region:Africa - West
Country:Sierra Leone
Last Updated:Apr 19, 2012    (view update history)
Project Description
Mercury is located on Block SL-072-10 offshore Sierra Leone, which Anadarko operates with a 65% interest. Partners on the block include Repsol Exploration Sierra Leone (25%), and Tullow Sierra Leone B.V. (10%).

Anadarko made a discovery in the Mercury-1 exploratory well, encountering about 135 net feet (41 meters) of oil pay in two Cretaceous-age fan systems. Drilled to a total depth of 15,950 feet (4,862 meters) in about 5,250 feet (1,600 meters) of water, the well hit about 114 feet (35 meters) of light sweet crude oil with gravity between 34 and 42 degrees API, with no water contact in the primary objective. An additional 21 net feet (6 meters) of 24-degree gravity crude was encountered in the shallower secondary objective.

Anadarko stated the wellbore is ...
Mercury is located on Block SL-072-10 offshore Sierra Leone, which Anadarko operates with a 65% interest. Partners on the block include Repsol Exploration Sierra Leone (25%), and Tullow Sierra Leone B.V. (10%).

Anadarko made a discovery in the Mercury-1 exploratory well, encountering about 135 net feet (41 meters) of oil pay in two Cretaceous-age fan systems. Drilled to a total depth of 15,950 feet (4,862 meters) in about 5,250 feet (1,600 meters) of water, the well hit about 114 feet (35 meters) of light sweet crude oil with gravity between 34 and 42 degrees API, with no water contact in the primary objective. An additional 21 net feet (6 meters) of 24-degree gravity crude was encountered in the shallower secondary objective.

Anadarko stated the wellbore is being preserved for possible re-entry, drillstem testing or a down-dip sidetrack to further delineate the reservoir's areal extent, quality and deliver ability.

The operator then appraised the find using the Discoverer Spirit drillship. The Mercury-2 well, drilled 7 miles (12 kilometers) northwest of the Mercury-1 oil discovery, targeted an area where the extensive 3D seismic coverage indicated a high probability of finding thick reservoir quality sandstones. It intersected over 886 feet (270 meters) of reservoir quality sandstones which were water bearing with oil shows at this location.
Activities
Status Updates
Anadarko Finds Water-Bearing Reservoir in Mercury-2
Type: Appraisal Operations

Apr. 2012 - Anadarko completes the Mercury-2 appraisal well in Sierra Leone. The well encountered water-bearing reservoirs with oil shows. The Mercury-2 well, drilled 7 miles (12 kilometers) northwest of the Mercury-1 oil discovery, targeted an area where the extensive 3D seismic coverage indicated a high probability of finding thick reservoir quality sandstones. It intersected over 886 feet (270 meters) of reservoir quality sandstones which were water bearing with oil shows at this location. The Discoverer Spirit (UDW drillship) drilled Mercury-2 to a final depth of 16,870 feet (5,142 meters) in a water depth of 5,955 feet (1,815 meters).

Anadarko Finalizes its Drilling Campaign in the Liberian Basin
Type: Status Update

Mar. 2011 - Anadarko has finalized plans for its 2011 drilling campaign in the Liberian Basin. To perform this program, the company intends to mobilize the Discoverer Spirit drillship to West Africa to drill an appraisal well on its Mercury field, located about 7 miles (11 kilometers) west of the Mercury discovery well offshore Sierra Leone in Block SL-07B-10. The company also plans to drill the Jupiter exploration prospect on the same block later in the year, which the company operates with a 65% working interest. Anadarko will also drill the Montserrado exploration well on Block 15 (operated by Andarko with a 57.5% working interest) offshore Liberia. Further to the east, on Block 10, Anadarko recently acquired 593,053 acres (2,400 square kilometers) of 3D seismic data. Processing of the survey is expected to take about six to nine months, and with the acquisition of this data, Anadarko will have 3D seismic information covering virtually all of its acreage in the Liberian Basin, stated the company.

Anadarko Finds Oil in Mercury-1
Type: New Discovery

Nov. 2010 - Anadarko made a discovery in the Mercury-1 exploratory well offshore Sierra Leone, encountering about 135 net feet (41 meters) of oil pay in two Cretaceous-age fan systems. Drilled to a total depth of 15,950 feet (4,862 meters) in about 5,250 feet (1,600 meters) of water, the well hit about 114 feet (35 meters) of light sweet crude oil with gravity between 34 and 42 degrees API, with no water contact in the primary objective. An additional 21 net feet (6 meters) of 24-degree gravity crude was encountered in the shallower secondary objective. Anadarko stated the wellbore is being preserved for possible re-entry, drillstem testing or a down-dip sidetrack to further delineate the reservoir's areal extent, quality and deliver ability. Mercury is located on offshore Block SL-072-10 about 40 miles (64 kilometers) southeast of the Venus discovery, which Anadarko operates with a 65% interest. Partners on the block include Repsol Exploration Sierra Leone (25%), and Tullow Sierra Leone B.V. (10%). Once operations are complete at the Mercury well, Anadarko plans to mobilize the drillship to Ghana to accelerate the appraisal program at the Owo and Tweneboa fields, anticipated to commence in 2011.

Mercury
Appraisal Drilling - Feb 28, 2012 to Apr 23, 2012

The Mercury-2 well was drilled 12 kilometres northwest of the Mercury-1 oil discovery, targeting an area where the extensive 3D seismic coverage indicated a high probability of finding thick reservoir quality sandstones. It intersected over 270 metres of reservoir quality sandstones which were water bearing with oil shows at this location. The Discoverer Spirit drillship drilled Mercury-2 to a final depth of 5,142 metres in water depths of 1,815 metres.

Discovery (Appraised) - Nov 20, 2011 to -

Appraisal Drilling - Oct 16, 2011 to Nov 19, 2011

The Discoverer Spirit drillship will drill the Mercury 2 well.

Discovery (Drilled) - Nov 15, 2010 to Oct 15, 2011

Update History
The SubseaIQ Team works everyday to provide you with the latest information on the offshore field development market. The following table provides you with a detailed record of each addition and update made to this project by the SubseaIQ team.
UPDATE TYPE DATE DAYS AGO
Field Status Updated Apr 24, 2012 730
Field Status Updated Apr 19, 2012 735
Field Status Added Apr 19, 2012 735
Field Updated Apr 19, 2012 735
Project Description Updated Apr 19, 2012 735
Activity Added Apr 19, 2012 735
Field Status Updated Jan 31, 2012 814
Field Status Added Jan 31, 2012 814
Field Updated Jan 31, 2012 814
Project Description Updated Jan 31, 2012 814
Field Status Updated Aug 18, 2011 980
Field Status Added Aug 18, 2011 980
Project Description Updated Aug 18, 2011 980
Field Updated Aug 18, 2011 980
Field Updated Mar 28, 2011 1123
Activity Added Mar 28, 2011 1123
Project Description Added Nov 18, 2010 1253
Field Added Nov 15, 2010 1256
Field Status Added Nov 15, 2010 1256
Activity Added Nov 15, 2010 1256

    Project Update History Search - View all the lastest updates made by the SubseaIQ team.
 
 
 
Field Name Mercury
Discovery Date Nov 2010
Block SL-072-10
Reserve Type Oil
Current Status Discovery (Appraised)
Production Start
Water Depth 1,600 m / 5,280 ft