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The AAPG/Datapages Combined Publications Database
South Texas Geological Society Special Publications
Abstract
Strandlines of the Chamberlain Sands, Lower Frio Formation, South Texas
Abstract
Two distinctive sands of the lower Frio Formation are encountered in the subsurface along a narrow trend over four South Texas counties (). The updip pinchout of these sands and small up-to-the-basin faults account for the trapping of several excellent oil fields and many smaller, one- or two-well fields along this trend. Stratigraphic traps along the pinchout are extremely elusive and narrow and have occasioned many a dry hole; nevertheless, the excellent per-well primary oil recoveries indicated by the productive history would seem to justify continued exploration, and a persevering search can be very rewarding. The narrowness of the trend also offers the advantage of leasing only a small amount of acreage and is therefore particularly attractive to independents.
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