准噶尔盆地南缘齐古背斜复杂构造建模技术应用  

Modeling Technology Application for Complex Qigu Anticline Formation on South Edge of Junggar Basin

作　　者：王俊[1] 肖立新[1] 刘翔[1] 赵进雍[1] 罗昭洋 Wang Jun;Xiao Lixin;Liu Xiang;Zhao Jinyong;Luo Zhaoyang(Institute of Geophysics,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang,830000,China;Southwest petroleum university,Chengdu,Sichuan,610000,China)

机构地区：[1]中国石油新疆油田公司勘探开发研究院,新疆乌鲁木齐830000 [2]西南石油大学地球科学与技术学院,四川成都610000

出　　处：《新疆地质》2019年第2期237-241,共5页Xinjiang Geology

基　　金：国家科技重大专项准噶尔前陆冲断带油气成藏、关键勘探技术及新领域目标优选(2016ZX05003-005);国家科技重大专项准噶尔盆地致密气地质评价与勘探目标优选(2016ZX05047-001-004);中国石油科技重大专项准噶尔盆地天然气藏主控因素及关键技术研究与应用(2017E-0403)共同资助

摘　　要：齐古背斜构造复杂,变形强烈,地震资料相对较差,构造样式建立存在多解性。为准确落实该区构造特征,从地质“戴帽”、倾角标定及平衡恢复与几何变形正演等关键技术出发,对齐古背斜进行精细构造解析,确立齐古背斜为早期构造三角楔与晚期冲断褶皱复合叠加的构造样式。该背斜主体部位具分层、分块构造特征,西段以南倾冲断断裂为主,东段以北倾反冲断裂为主。复杂构造建模技术的应用将有助于建立更为合理的构造解释方案,大大降低油气勘探风险。Qigu anticline formation is complex, its seismic data is relatively poor, and there are multiple solutions for the formation. Proceeding from geological“Capping”, angle calibration, forward modeling for balance restoration and geometry deformation and other key technology for complex formation modeling, fine structure analysis is conducted for Qigu anticline, so as to confirm that Qigu anticline is the structural pattern complexly superimposed by the triangular wedge formed at early stage and the thrust faulted-fold at late stage. The major part of Qigu anticline formation is characterized by layering and blocking.The south-dipping thrust fault is dominant in the western,and the north-dipping recoil fault is dominant in the eastern.The modeling technology application of complex formation will be conducive to establish more reasonable formation interpretation scheme, so as to decrease of risk of oil-gas exploration significantly.

关 键 词：准噶尔盆地 齐古背斜 复杂构造 建模技术 

分 类 号：P548[天文地球—构造地质学]