博乐盆地及周缘石炭纪以来构造应力场解析  

Analysis of tectonic stress field in Bole basin and its adjacent area since carboniferous period

作　　者：张美[1] 穆玉庆[1] 韩立国[1] 繆灏 

机构地区：[1]中国石化胜利油田分公司勘探开发研究院西部分院,山东东营257000

出　　处：《石油地质与工程》2017年第5期5-8,共4页Petroleum Geology and Engineering

摘　　要：博乐盆地具有较好的含油气远景,但地质研究程度较低,需要对其形成的构造应力场进行分析。选取构造条件复杂的博乐隆起为主要研究区,采用古构造分析方法进行构造应力场解析。通过统计分析节理、断层发育特征,确定了博乐隆起主要发育三组断裂、四期节理。利用共轭X剪节理求取最大主应力方位,结合区域构造演化认识,确定博乐盆地石炭纪以来主要经历了早二叠世NNW-SSE向挤压构造应力场、早二叠世末-中二叠世NWW-SEE向挤压构造应力场、晚二叠世末-三叠世NEE-SWW向挤压构造应力场和晚侏罗世至白垩世NNE-SSW向挤压构造应力场。Bole basin has a good hydrocarbon prospect, while it has a low degree of geological research, therefore, the analysis of tectonic stress field should be carried out. Bole uplift with complex structural conditions was selected as the field survey area. By using the ancient tectonic analysis method, the tectonic stress field was analyzed. Through statistical analysis of jointing and fault development characteristics, three groups of faults and four joints were identified in the Bole uplift. By using conjugate x shear joint to determine the maximum principal stress orientation, and combined with regional tectonic evolution, four tectonic movements since Carboniferous in Bole basin were mainly developed. The four periods tectonic stress field were NNW-SSE thrust tectonic stress field of the early Permian, NWW-SEE thrust tectonic stress field of the early Permian-middle Permian, NEE-SWW thrust tectonic stress field of late Permian-Triassic, and NNESSW thrust tectonic stress field of late Jurassic to Cretaceous.

关 键 词：博乐盆地 石炭纪 构造应力场 

分 类 号：TE111[石油与天然气工程—油气勘探]