stratigraphic trap

stratigraphic trap

[¦strad·ə¦graf·ik ′trap]
(geology)
Sealing of a reservoir bed due to lithologic changes rather than geologic structure. Also known as porosity trap; secondary stratigraphic trap.
References in periodicals archive ?
Overlying the Cadence structure, the Yoredale and Millstone Grit formations subcrop against the Base Permian Unconformity creating a stratigraphic trap similar to those producing elsewhere in the Southern North Sea.
The new structure, which has been mapped with two-dimensional seismic, covers a twenty-five-square-mile area and is a structural rather than a stratigraphic trap, which means gas-bearing reservoir sands would likely be thicker and more productive than thinner layers of reservoir more likely in a stratigraphic trap.
We believe there is significant additional upside as we conduct appraisal activity closer to the perceived core of this stratigraphic trap where a thicker reservoir section is mapped.
This collection is the result of a May 2004 meeting examining current petroleum industry perceptions of stratigraphic trap exploration together with the technologies, tools, and philosophy of stratigraphic trap exploration.
The Jaguar prospect is a stratigraphic trap located in the Northern North Sea Block 211/22b to the northeast of the Cormorant North oil field.
The SOA #2 prospect depended on the 9500' sand to be a stratigraphic trap (i.
Rhea is a Cretaceous-aged stratigraphic trap prospect with multiple reservoir targets and total estimated gross mean unrisked resources in excess of 250m barrels of oil.
However, once discovered and defined, they have been more straightforward to produce since they generally hold very mobile hydrocarbons that have migrated from source rocks to the geologic structure or stratigraphic trap that blocked further hydrocarbon movement.
This has potentially positive implications for the Tweneboa stratigraphic trap prospect, which is scheduled for drilling in the first quarter of 2009.
aaa The results from the A4 well provide further confirmation of an oil column height of at least 155 feet in Basal Sand 1 in a large structural and stratigraphic trap that encompasses the A1, A2, A3 and A4 wells.
Drilling is currently in progress on one more deepwater exploration well in Block CI-401, the Albacore-1X, located 33 kilometers (21 miles) to the east of Independance-1X on a similar large Turonian deepwater slope channel stratigraphic trap.
This provides a significant gas resource upside in this stratigraphic trap should Advent successfully identify areas within the interpreted Waggon Creek gas accumulation of thicker reservoir development.