Interpreted reflection seismic events near the North Central Oil Corporation Well, Newark Basin, Bucks County, Pennsylvania
- Geological Survey, Reston, VA (United States)
In 1985, North Central Oil Corporation drilled a 10,500-ft well in Bucks County, Pennsylvania, to test for oil and gas in Triassic-Jurassic strata of the Newark Group in the Newark basin. The hole was located about 5 mi southeast of the border fault on the crest of the Revere anticline, a transverse structure that plunges northwestward toward the border fault. This drill hole, No. 1 Cabot-KBI penetrated in descending order 2900 ft of lacustrine red and gray shale (Passaic Formation of Jurassic and Triassic age), 3600 ft of lacustrine gray and black shale (Lockagong Formation of Triassic age), and 4000 ft of fluvial sandstone and red shale (Stockton Formation of Triassic age). Although the drill hole abandoned, it revealed excellent gas shows throughout the Lockatong Formation and parts of the Stockton Formation. Acoustic and density logs from the well were converted to a synthetic seismogram that ties stratigraphic intervals in the borehole with seismic events on the nearby, 33-mi-long Seitel NB-1 seismic line. Formation contacts, probable intraformational unconformities, and lithologic units, such as 50-ft-thick fluvial sandstones in the Stockton Formation, are identified and traced for tens of miles away from the well. Moreover, beneath the drill site in the Stockton Formation, the 48-fold seismic line shows a large anticline that is subparallel to the border fault. This anticline has no surface expression, but, in combination with the intersecting Revere anticline, provides an obvious exploration target. Our interpretation suggests that the No. 1 Cabot-KBI drill hole ends about 1500 ft above the border fault and the underlying middle Proterozoic basement. High-amplitude seismic events from the Stockton Formation on the south-eastern flank of the large anticline may indicate undiscovered gas accumulations.
- OSTI ID:
- 6701335
- Report Number(s):
- CONF-930981-; CODEN: AABUD2
- Journal Information:
- AAPG Bulletin (American Association of Petroleum Geologists); (United States), Vol. 77:8; Conference: Eastern Section meeting of the American Association of Petroleum Geologists: eastern energy, environment and education for the 21st century, Williamsburg, VA (United States), 19-21 Sep 1993; ISSN 0149-1423
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of the Triassic Newark Basin of New York and New Jersey for geologic storage of carbon dioxide
Stratigraphy and structure of the Hopewell fault block, Newark basin, NJ: Climatic and structural controls on sedimentation
Related Subjects
NATURAL GAS DEPOSITS
SEISMIC SURVEYS
ANTICLINES
EXPLORATORY WELLS
GEOLOGIC FAULTS
SANDSTONES
SEISMIC EVENTS
SHALES
STRATIGRAPHY
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
RESOURCES
ROCKS
SEDIMENTARY ROCKS
SURVEYS
WELLS
030200* - Natural Gas- Reserves
Geology
& Exploration