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Oilfield Glossary
Oilfield Glossary
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infinite-acting reservoir

1. n. [Well Testing]
reservoir with no apparent outer boundary limit affecting fluid flow during a test period. Unless an outer boundary, such as a nearby fault, is close to the wellbore, it usually takes a day or more for outer boundaries to affect well-test results. Since most tests are of relatively short duration, outer boundaries usually do not affect test results.
See: fluid flow