An integrated study of the Grayburg/San Andres Reservoir, Foster and South Cowden Fields, Ector County, Texas. Quarterly report, July--September, 1996
During the third quarter, the Foster No. 11 was drilled to test the simulation and contact additional reserves in the San Andres and the Lower Grayburg. The well was located in the Southwest quarter of Section 36 to take advantage of the lack of producing wells in the West half of the Southwest quarter of the section. A full suite of logs: Compensated Neutron, Three Detector Density, Long Spacing Sonic, Dual Lateralog, Micro-CFL, Spectral Gamma Log and Mud Log were run. Additionally, a Repeat Formation Tester was employed in an effort to obtain reservoir pressure data. Eighteen tests were attempted, with six good tests, and two formation fluid samples recovered. The results indicate that the San Andres and the Lower Grayburg are in different pressure regimes, and the A1 Zone is depleted. Core was cut in the Lower Grayburg and San Andres to provide rock property information for these two intervals. Based on the log calculations and core recovery, the initial No. 11 Foster completion was attempted in the San Andres. The interval from 4,238 feet(-1,290) to 4,323 feet(-1375) was perforated and acidized. Rates of 3--4 BO and 6--8 BWPD were established. Because water zones were indicated both above and below the completed interval, the fracture completion had to be designed to minimize fracturing into these zones. A Mini Frac was attempted with 3,500 gallons cross-link gel and 6,000 pounds of 100 mesh sand followed by 2,000 gallons nitrified gel and 6,000 pounds of sand. At the end of the quarter, the well was on test.
- Research Organization:
- Laguna Petroleum Corp., Midland, TX (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FC22-94BC14982
- OSTI ID:
- 527467
- Report Number(s):
- DOE/BC/14982-11; ON: DE97009209; TRN: AHC29720%%59
- Resource Relation:
- Other Information: PBD: 14 Feb 1997
- Country of Publication:
- United States
- Language:
- English
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An Integrated Study of the Grayburg/San Andres Reservoir Foster and South Cowden fields,
An Integrated Study of the Grayburg/San Andres Reservoir, Foster and South Cowden Fields, Ector County Texas