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Thursday, January 9, 2014
In Equatorial Guinea the long-term drill stem test (DST) on the Diega accumulation in Block I is now complete. An initial pilot well, I-8, encountered 12-meter vertical thickness of good quality oil pay with no water and established the deepest known oil on the Diega accumulation. Subsequently the planned horizontal sidetrack I-8ST drilled some 400 meters of oil pay of similarly good quality and was tested for one month at constrained rates of up to approximately 7,300 bpd of oil.
The well has been suspended for re-use as a future production well. The test confirmed lateral reservoir continuity and absence of reservoir compartmentalization and will permit the submission in 2014 of a plan of development for Diega as a subsea tieback to the Aseng FPSO, targeting first oil in 2016.
The rig used on the well, the Atwood Hunter, has been released.
PA Resources, one of the partners on Block I commented with its CEO Mark McAllister saying: “This is an excellent result in every respect; well productivity, reservoir quality, field continuity and the size of the accumulation. We indicated in 2013 that we expected a near term field development in Block I, conservatively of the order of 30 million barrels. However initial interpretation of these well results is consistent with our expectations of significantly larger reserves and further Diega drilling is likely in Block I, where the down-dip limit of the field has yet to be established. An early Diega development is facilitated by the existing infrastructure in Block I, and we expect that any development will be expandable to accommodate additional reserves identified during further appraisal drilling.”
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