Well-test analysis for a well in a constant pressure square
Very little information exists for analyzing well tests wherein a part of the drainage boundary is under pressure support from water influx or fluid injection. An idealization is the behavior of a well in the center of a square whose outer boundary remains at constant pressure. A study of this system indicated important differences from the behavior of a well in a closed outer boundary square, the conventional system. At infinite shut in, the constant-pressure boundary case well will reach the initial pressure ofthe system, rather than a mean pressure resulting from depletion. But it is possible to compute the mean pressure in the constant- pressure case at any time during shut in. Interpretative graphs for analyzing drawdown and buildup pressures are presented and discussed. This case is also of interest in analysis of well tests obtained from developed 5-spot fluid-injection patterns. (16 refs.)
- OSTI ID:
- 6388795
- Report Number(s):
- CONF-7210140-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE-4054; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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