Use of time-lapse logging techniques in evaluating the Willard Unit CO/sub 2/ flood mini-test
This work describes how compensated neutron and pulsed neutron logs were used to monitor performance of a tertiary recovery minitest of CO/sub 2/ miscible flooding. The study contains (1) a description of procedures used to take and interpret the logs, (2) a discussion of the significance of the log responses, and (3) a discussion of the accuracy of calculated saturation changes. The experiment was run in the San Andres dolomite formation in the Willard Unit, Wasson field. Logs were taken in an observation well, completed with unperforated steel casing, and located 100 ft from the CO/sub 2/ injector. Water was injected first to thoroughly waterflood the region near the observation well. This was followed by injection of CO/sub 2/ and water in small, alternate slugs. Logs were taken regularly during both the waterflood and the CO/sub 2/ flood. (21 refs.)
- Research Organization:
- Atlantic Richfield Co
- OSTI ID:
- 6401119
- Report Number(s):
- CONF-7804124-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Conference: 5. SPE symposium improving oil recovery, Tulsa, OK, USA, 16 Apr 1978
- Country of Publication:
- United States
- Language:
- English
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