平衡地质剖面技术在鄂尔多斯盆地西缘中南段中的应用  

The Application of Balance Geological Section Technology in the Mid-South Section of the Western Margin of the Ordors Basin

作　　者：冯娟萍[1] 欧阳征健[2,3,4] 黄正良[3,4] 

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]成都理工大学沉积地质研究院,四川成都610059 [3]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [4]中国石油长庆油田分公司勘探开发研究院,陕西西安710018

出　　处：《大地构造与成矿学》2013年第3期393-397,共5页Geotectonica et Metallogenia

基　　金：陕西省教育厅专项科研计划项目(编号:09JK567)资助

摘　　要：以断层相关褶皱理论为指导,利用平衡地质剖面技术与2DMOVE软件对鄂尔多斯盆地西缘中南段地震剖面进行了精细解释、平衡与正演。重新厘定西缘及周缘地区一级断裂9条,一级构造单元4个,并将西缘中南段划分为5个段。建立了不同段构造模式,其中马家滩地区为典型的薄皮构造,地震测线H126489的解释方案是合理的、平衡的和可恢复的,其最短收缩率为27.3%。不同区段最短收缩量不同,甜水堡段构造变形强度最大,马家滩段、石板沟段和沙井子段变形强度次之,彭阳段构造变形强度较小。可见,平衡地质剖面技术在西缘中南段地震剖面解释中是一种行之有效的方法。Guided by the theory of fault-related folding, using balance geological section technology and software of 2DMOVE, this paper accurately interprets, makes balances and direct modeling of the seismic profiles in the west margin of the Ordos Basin. Nine first-level faults and four first-level structure units in the west margin are redefined. The middle- south segment in the west margin is divided into five sections. The authors proposed structure models for different sections. In the models, the Majiatan section has thin-skinned structure and the interpretation of the Seismic line（H126489） is reasonable, balanced and restorable, which the shortest percentage of contraction is 27.3%. The shortest percentages of contraction vary in different sections. The maximum is in the Tianshuibu section. The Shibangou section and Shajingzhi section take the second place. The minimum percentage of contraction is found in the Pengyang section. Thus, the balance geological section technology is fit to interpret seismic sections in the west margin of the Ordos Basin.

关 键 词：平衡地质剖面技术 盆地西缘 构造模型 正演 构造变形 

分 类 号：TE121[石油与天然气工程—油气勘探]