Influence of the Earth Stress on the Development of Gas Reservoirs  

地应力对气藏开发的影响(英文)

作　　者：李治平[1] 宋艳波[1] 袁士义[2] 胡永乐[2] 

机构地区：[1]中国地质大学能源学院,中国北京100083 [2]石油勘探开发研究院,中国北京100083

出　　处：《Petroleum Science》2004年第4期6-10,35,共6页石油科学（英文版）

摘　　要：Gas reservoirs are located kilometers deep beneath the earth's surface under great earth stresses, including the overburden stress and the horizontal stress. After a well is drilled, the stress condition around the well bore will be changed. During the development, a pressure funnel forms around the hole, with the rock stress redistributed. In this paper, the influence of the earth stress on the gas reservoir development, including the output, the period of the steady output, the recovery and ratio, is researched thoroughly with the theory of reservoir seepage dynamics and clarified with the calculation method. The research shows that the earth stress produces impacts on the development of a gas reservoir when the stress is great.Gas reservoirs are located kilometers deep beneath the earth's surface under great earth stresses, including the overburden stress and the horizontal stress. After a well is drilled, the stress condition around the well bore will be changed. During the development, a pressure funnel forms around the hole, with the rock stress redistributed. In this paper, the influence of the earth stress on the gas reservoir development, including the output, the period of the steady output, the recovery and ratio, is researched thoroughly with the theory of reservoir seepage dynamics and clarified with the calculation method. The research shows that the earth stress produces impacts on the development of a gas reservoir when the stress is great.

关 键 词：Earth stress gas reservoir DEVELOPMENT 

分 类 号：P618.130.2[天文地球—矿床学]