摘要
以北大港油田为例，研究利用地震、井孔崩落和水压致裂等资料，在逐项分析的基础上，再参考断层稳定性理论，通过综合分析确定油田现代构造应力场的实用方法。认为北大港油田及邻近地区现代构造应力场的主要特征是：①总体上处于正断层型应力状态；②主应力方向变化较大，看不出一致的优势方向；③水平差应力大小随地点和深度变化也较大。讨论了所得结果的可能应用。
Taking the Beidagang oil field as an example, this paper studies the practical way of inferring the present-day stress field of oil field by making an integrated analysis of the data of earthquake observation, bore hole breakouts and hydraulic fracturing.The following characteristics of the present-day tectonic stress in Beidagang oil field and its vicinity are obtained: (1)There exists a global normal fault stree regime, which is associated with the regional tectonic stress of the same type in deep crust.(2 )Principal stress orientations vary significantly, showing no dominant consistent direction. (3)Horizontal differential stress Is spatially quite inhomogeneous and varies with depth. The implication of the knowledge on the stress field to the oil recovery is discussed.
出处
《石油勘探与开发》
EI
CAS
CSCD
北大核心
1996年第6期78-81,84,共5页
Petroleum Exploration and Development
基金
国家自然科学基金
关键词
构造应力
应力场
油田
油气勘探
: Tectonic stress, Recent, Stress field, Feature, Beidagang oil field
