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This flood project, operated by Gulf Oil Corp., is located seven miles southwest of Iowa Park in Wichita County, Tex., in an area formerly known as the extreme northeast corner of the KMA field. Pilot waterflood operations, from Dec., 1950, to Oct., 1954, prompted initiation of a full-scale water flood in Nov., 1954.This paper covers the performance record of the Gulf water flood, which has injected more than 13.2 million bbl of water in 40 injection wells to yield over 2.5 million bbl of project oil. After seven years of full-scale injection, the low water-cut and recoveries indicate an efficient displacement program. The ultimate project oil recovery appears to be 100 to 125 per cent of primary recovery. Introduction The Fassett and Tuttle KMA waterflood project is located seven miles southwest of Iowa Park in Wichita County Tex., is shown in Fig 1. The area was formerly known as the extreme northeast corner of the KMA field; however, later drilling from 1955 to 1959 extended the field approximately three miles to the east. The recently formed Pinnacle waterflood unit will cover the new drilled area along with a small portion of the old producing area. Also operating in this general area is the Northeast KMA cooperative water flood, which began water injection in Oct., 1959. Only one main producing zone underlies the area, as shown in Fig. 2, and is found at depths from 3,800 to 4,100 ft. This zone could possibly correlate with Zone 11 in the southwestern part of the KMA field. Recent drilling operations have encountered oil production from an upper and lower zone as differentiated from the main producing zone; however, the zones are defined and are small in areal extent. Prior to the beginning of pilot waterflood operations in 1950, operational economics indicated well abandonment beginning in 1954 and final or ultimate abandonment in 1956.This flood project originated from an agreement by and between W. H. Hammon and Warren Petroleum Corp., now Gulf Oil Corp., to conduct separate pilot waterflood operations to determine the feasibility of flooding the KMA sand before beginning a full-scale water flood embracing 161 producing wells in the extreme northeast corner of the KMA field. Hammon and Gulf started operations in Sept., 1950, with a five-spot flood pattern on the joint-account Fassett and Tuttle "A" and W. H. Hammon leases utilizing existing producing wells. Injection rates were restricted to 200 B/D/well. Gulf located its pilot flood approximately one mile east of the Hammon flood on the Fassett and Tuttle "E" lease and started operations in Dec., 1950, with two converted producing wells alternated with a producing well in between. Both pilot floods responded within the first year of operation and full-scale flooding began to appear feasible from a recovery and economic standpoint; however, the existing fluid injection on a pilot flood basis was continued until the later part of 1954 before full-scale flooding started. D. F. O'Rourke, an offset operator, joined in the cooperative flood at this time. This report will cover the performance record of the Gulf-operated flood, which has injected 13,266,039 bbl of water in 40 injection wells and has produced 2,554,329 bbl of project oil to Jan. 1, 1962. JPT P. 839^

Production Performance of the Fassett and Tuttle Area Cooperative Water Flood, KMA Field, Tex.