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Geology of the Kinta Gas Field: Abstract
The Kinta gas field is located in the Arkoma Basin of Southeastern, Oklahoma. It comprises portions of Tw. 7 and 8N., and Rs. 19-20E in Haskell County. First gas production was established from the Hartshorne in 1916. The depth of Hartshorne is approximately 1600 feet. A large surface anticline is present. Detailed surface work was done by Oakes and Knechtel in 1948.
The first deep test drilled to the Ordovician was in 1937 by Conoco in Section. 33, T.8N., R.20E. This well tested 2 million cubic feet of gas from the Basal Atoka sand. The well was plugged as being non-commercial.
No drilling took place from the time of Conoco's plugging of their well until Superior drilled the No. 1 Allred in 1951. Since that time there have been forty wells drilled in search of the basal Atoka and Cromwell gas. At present there are 30 producing wells, 10 dry holes, and 1 drilling well. Of these 30 producers, 17 are single zone basal Atoka wells; two are single zone Cromwell, and 11 dually completed Cromwell and basal Atoka. Development was at its maximum during 1961, when 11 wells were drilled. Air drilling was introduced to the area during 1960. This type of drilling has greatly reduced drilling costs and has accelerated development.
The total gas produced to date from the basal Atoka and Cromwell is 11.2 billion cubic feet. Recovery per acre foot from the basal Atoka is expected to be about 400,000 cubic feet of gas. The Cromwell is expected to have recovery factor on the order of 300,000 cubic feet of gas per acre foot. Based on 30 wells with an average of five billion cubic feet of gas per well, the total reserves developed to date in the basal Atoka is in excess of 150 billion cubic feet of gas; 50 billion appears to be in undrilled locations, so a total of 200 billion cubic feet of gas is the probable ultimate reserves in the basal Atoka.
The Cromwell produces from only 15 wells and probably averages five billion cubic feet gas per well, or a developed reserve of 75 billion. Proved locations should result in another 25 billion or a total of 100 billion ultimate reserves in the Cromwell.
The estimated ultimate recovery from both the basal Atoka and Cromwell gas zones should exceed 300 billion cubic feet of gas. Character of the gas from the two zones is almost identical; both have a BTU rating 980 and a specific gravity of .58.
Acknowledgments and Associated Footnotes
1 Apache Oil Company, Tulsa, Oklahoma
Copyright © 2006 by the Tulsa Geological Society