Influence of Stress-sensitivity on Development Index in Dongfang 1—1#br# Gas Field

doi:10.11885/j.issn.1674-5086.2014.07.10.02

Abstract

Abstract:

Medium deep Huangliu Formation in the Dongfang 1-1 gas field is a typical reservoir of abnormally high pressure.
The pressure coefficient is at 1.9～2.3，so it is stress sensitive in development. By means of laboratory core experiments and
numerical simulation，we carried out a systematic research in order to understand the effect of stress sensibility of this field
on production performance. The research reveals that the variation of confining pressure and permeability showed relatively
regular exponential variations. As stress-sensitivity has influence on gas well pressure distribution and the pressure drop funnel，
differential pressure is the biggest near the well bore. Because of the stress-sensitivity，the period of stabilized production of the
Dongfang gas field becomes 5.00 years from 5.75 years，and the final recovery of this field decreased by 1.92%. These results
offer a very important guidance for researching and designing production performance of a gas reservoir with abnormally high
pressure.

Key words: abnormally high pressure, stress-sensitive, numerical simulation, recovery, pressure drop funnel

CLC Number:

TE377

GUO Ping1*, ZHAO Zihan1，2, WANG Zhouhua1, LEI Hao3, YANG Yang4. Influence of Stress-sensitivity on Development Index in Dongfang 1—1#br# Gas Field[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2014.07.10.02.

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