Shenandoah Shenandoah
OIL & GAS FIELD
Field Name Shenandoah Discovery Date Feb 2009
Block Walker Ridge 52, 51 Reserve Type Oil
Current
Status		 Appraisal Drilling Production Start
Water Depth 1,772 m / 5,848 ft
 
 
Description
 
Located on Walker Ridge Block 52 in the Gulf of Mexico is the Shenandoah oil field, situated in 5,814 feet (1,772 meters) of water. Serving as operator and holding a 30% interest is Anadarko; ConocoPhillips holds 40%; Cobalt holds 20%; and Marathon holds the remaining 10% interest.

In May 2008, Anadarko leased the Noble Paul Romano semisub to spud the WR52 No. 1 well, which was expected to take 200 days. Due to mooring issues while drilling, the well took longer than expected to reach its total depth of 31,000 feet (9,449 meters). However, in February 2009, a discovery was made on its Shenandoah prospect, when net oil pay hit 300 feet (91 meters) in the Wilcox formation.

The operator is currently drilling Anadarko's Shenandoah appraisal well. The well has a proposed depth of 32,000 feet.
 
Activities
 
Anadarko Wins with Shenandoah-2
Date: Mar. 2013
Type: Appraisal Operations
Shenandoah-2, Anadarko's US Gulf of Mexico deepwater well, encountered over 1,000 net feet of oil pay in multiple high quality Lower Tertiary reservoirs. The well was drilled by the Ensco 8505 (UDW semisub) to a total depth of 31,405 feet in 5,838 feet of water. Well data indicates excellent quality reservoir and fluid properties. The well was drilled to test the down-dip extent of the Shenandoah-1 discovery and was found to be full to base with no oil-water contact observed.
Anadarko to Appraise Shenandoah Discovery
Date: Jul. 2012
Type: Appraisal Operations
Anadarko is currently drilling the Shenandoah appraisal well in Walker Ridge 51 in approximately 5,800 feet (1,768 meters) of water. The operator is using the ENSCO 8505 (UDW semisub) to drill the well to a proposed depth of 32,000 feet (9,754 meters).
Anadarko Gets Nod to Drill in GOM
Date: Jun. 2012
Type: Status Update
The BOEM recently approved Anadarko's permit to drill at its Shenandoah prospect in Walker Ridge Block 51. The permit lists the ENSCO 8505 (UDW semisub) as the rig that will perform drilling operations. The Shenandoah well has a proposed depth of 32,000 feet (9,754 meters) and is located in approximately 5,800 feet (1,768 meters) of water.
Anadarko Scores Again in Deepwater GOM with Shenandoah
Date: Feb. 2009
Type: New Discovery
Anadarko Petroleum Corporation announced its second deepwater Gulf of Mexico discovery this week. The Shenandoah discovery well, located in Walker Ridge Block 52, encountered net oil pay approaching 300 feet in the Wilcox formation.
Noble Paul Romano on its Way Back to Shenandoah Field
Date: Sep. 2008
Type: Status Update
Noble Corporation has reported that the Noble Paul Romano semisub rig experienced mooring failures and drifted from its original respective location on Walker Ridge 52, Anadarko's Shenandoah prospect, but has been boarded and power has been restored. Tugs are on station to assist with the start-up of each of the rig and other than the above mentioned mooring equipment, there is no other apparent significant damage.
Anadarko Set to Spud Shenandoah Prospect
Date: May. 2008
Type: Status Update
Anadarko is preparing to spud its lower tertiary prospect, Shenandoah, using the Noble Paul Romano semisub. Drilling activity is expected to take approximately 200 days.
 
Status History
 
Shenandoah
Appraisal Drilling - Jun 25, 2012 to -
The ENSCO 8505 (UDW semisub) has begun operations on its maiden well in the Gulf of Mexico. The rig is drilling Anadarko's Shenandoah appraisal well in Walker Ridge 51 in approximately 5,800 feet of water. The well has a proposed depth of 32,000 feet.
Discovery (Drilled) - Feb 2009 to Jun 24, 2012
WR52 #1 encountered net oil pay approaching 300 feet in the Lower Tertiary Wilcox objective.
Exploratory Drilling - Jun 2008 to Feb 2009
Noble Paul Romano drilling WR52 #1 (BH - WR8). Expected time to drill the well is 200 days.
Bright Spot - Jul 01, 1998 to Jun 2008
Exxon Mobil picked up WR8 at the 3/18/1998 Central GOM Lease Sale #169 with a bid of 313000.00; Lease expires 6/30/2008. Kerr McGee picked up WR52 at the 3/19/2003 Central GOM Lease Sale #185 with a bid of 322560.00; Lease expires 5/31/2013.