Overpressure Improves Deep Reservoir Quality: Mechanism and Petroleum Geologic Significance

Abstract

Abstract: The improvement of overpressure on deep reservoirs includes multiple mechanisms of origin such as the effective stress for bringing down the burial depth of reservoirs, inhibition of diagenesis, secondary porosity associated with overpressure leak-off, development of natural hydraulic fractures, and fluid-flowing convection controlled by overpressure, etc. Each mechanism has its special effect on reservoir quality, by which the distribution of such deep reservoirs can be predicted precisely and effectively.

Key words: overpressure, reservoir, deep zone

CLC Number:

LI Hui-jun, ZHOU Xin-gui, ZHANG Lin-yan, ZHANG Wen-cai. Overpressure Improves Deep Reservoir Quality: Mechanism and Petroleum Geologic Significance[J]. Xinjiang Petroleum Geology, 2009, 30(5): 554-556.

References

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