New storage phenomena in high drawdown gas well buildup
Conference
·
· Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:5393822
Strange behavior has been noticed in pressure buildup curves for gas wells producing from very low permeability, high drawdown formations. A study of this behavior was made by means of a one-dimensional radial mathematical model wherein wellbore storage is treated rigorously. It was detected that buildup cases characterized by moderate to high pressure drawdown before shut-in always exhibit a shift of the conventional log-log graph to a larger value of the dimensionless wellbore storage constant, compared to the liquid solution. The typical unit slope in the wellbore storage control period is still preserved, and after that period, the buildup curve coincides smoothly with the constant physical properties liquid case. 4 refs.
- Research Organization:
- Stanford Univ, Calif, USA
- OSTI ID:
- 5393822
- Report Number(s):
- CONF-810321-
- Conference Information:
- Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE 9903
- Country of Publication:
- United States
- Language:
- English
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