Natural gas production from Ordovician Queenston Formation in West Auburn field, Cayuga County, New York
Gas has been produced from the Upper Ordovician Queenston Formation at West Auburn field, Cayuga County, New York, for over 20 years. This field indicates Queenston production to be long lived, with substantially economic reserves found at depths shallower than 2,000 ft. Locally, The Queenston is comprised of sand and silty shale with the primary reservoirs found in quartzose sandstones. The overall thickness of the Queenston clastic interval is over 700 ft with gas found in the upper 300 ft. Three primary gas sands are continuous across the field area and have high average porosities of as much as 13.0% and average permeabilities of 0.20 md. Extreme examples show peak porosities approaching 20% and permeabilities of over 5.0 md. The reservoir is composed of very fine to medium-grained, moderately sorted, red sandstone. Sand grains are predominantly quartz with minor amounts of feldspar. The main pore-filling constituent is abundant authigenic clay with iron oxides, thus contributing to reduced permeabilities. These sands vary in reservoir quality through the field and, hence, allow for stratigraphic trapping of the gas. Other factors involved include the updip accumulation of gas against the Silurian-Ordovician unconformity at the top of the Queenston. Some of the pay sands are absent due to this unconformity in the area farthest updip and, therefore, decrease the overall reserve potential of the individual well in that part of the field.
- Research Organization:
- Meridian Exploration Corp., Pittsburgh, PA (USA)
- OSTI ID:
- 6006860
- Report Number(s):
- CONF-8809345-
- Journal Information:
- AAPG Bull.; (United States), Vol. 72:8; Conference: AAPG Eastern section meeting, Charleston, WV, USA, 13-15 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS FIELDS
RESERVOIR ROCK
NEW YORK
FELDSPARS
GEOLOGIC FORMATIONS
GEOLOGIC TRAPS
ORDOVICIAN PERIOD
PERMEABILITY
POROSITY
SANDSTONES
SILURIAN PERIOD
FEDERAL REGION II
GEOLOGIC AGES
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MINERALS
NATURAL GAS DEPOSITS
NORTH AMERICA
PALEOZOIC ERA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
030200* - Natural Gas- Reserves
Geology
& Exploration