Mitchell Energy foam fracs tight zones. [Texas]
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), Vol. 52:15
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NATURAL GAS WELLS
HYDRAULIC FRACTURING
PROPPING AGENTS
TEXAS
DEPTH 3-6 KM
ENHANCED RECOVERY
FOAMS
OPTIMIZATION
PERFORMANCE
PERMEABILITY
PRODUCTIVITY
SAND
COLLOIDS
COMMINUTION
DEPTH
DIMENSIONS
DISPERSIONS
FEDERAL REGION VI
FRACTURING
NORTH AMERICA
RECOVERY
USA
WELLS
030900* - Natural Gas- Artificial Stimulation
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