Mitchell Energy foam fracs tight zones. [Texas]

Journal Article · Mon Dec 01 04:00:00 EST 1980 · Pet. Eng.; (United States)

OSTI ID:7071734

Bleakley, W B

Wells that produced one billion cubic feet of gas over an 11-yr period could have produced that much in one year, according to results of recent massive foam frac jobs. Mitchell Energy and Development Corp. experienced that kind of performance from wells completed in the Cotton Valley Lime gas reservoir of Central Texas, just south of Mexia. One well, the No. 1 Stone, in Limestone County, was completed in Dec., 1969 at 11,200 ft, exposing a gross interval of 200 ft and a net pay of 26 ft. Cumulative production to early this year was approx. 578 mmcf and the well was producing at 50 to 75 mcfd through a full-open 2-in. choke with flowing tubing pressure of 640 psi. The formation was fractured in March, 1980, using foam, and present producing rate of 600 mcfd against 800-psi line pressure, in spite of a screen-out during the frac treatment that permitted only half of the designed-for one million pounds of sand to be put away. This is believed to be the first foam job at that depth, however, and the first to get 500,000 lb of sand into a fracture, using foam.

• OSTI ID: 7071734
• Journal Information: Pet. Eng.; (United States), Journal Name: Pet. Eng.; (United States) Vol. 52:15; ISSN PENGA
• Country of Publication: United States
• Language: English

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