Cenozoic Structural Deformation and Hydrocarbon Eexploration of Kedong Structure in the Piedmont of Western Kunlun Mountain
详细信息
- 责任者：Du Zhili (Research Institute of Exploration & Development ; Tarim Oilfield Company ; PetroChina ; Korla 841000 ; China) ; Liang Han
- 刊名：Acta Petrolei Sinica
- 出版年：2013
- 卷期：34(1)
- 关键词：构造变形 ; tectonic deformation ; 油气勘探 ; petroleum exploration ; 昆仑山 ; Kunlun Mountains
- 页码：p.22-29
- 图表：illus., 28 refs.
- 分类号：1003
- issnNo：ISSN0253-2697
- isbnNo：CN11-2128/TE
摘要
Used high-resolution seismic data and combined with outcrop and drilling data,we analyzed structural characteristics of Kedong structure(the east segment of Keliyang-Fusha fault belt) in the piedmont of western Kunlun mountain,which,as a transpression structure,consists of mainly basement faults and shows a gently dipping backlimb(crest) and intensely-deformed forelimb.Growth strata reveal that Keliyang-Fusha faults formed a monocline(nose) structure by thrust in Pliocene with the deformation of limb rotation,that is to say the Kedong structure is a basement-involved structure.Later Keliyang-Fusha faults broke through the Kedong monocline and cut it into fault blocks,resulting in a suite of steeply-reversed strata exposed to the surface,which contained Jurassic-Cenozoic beds.Because deep fault blocks didn’t suffer intense deformation,they formed good traps for hydrocarbon accumulation.Drilling data of Well KD-1 indicated that such blocks are of good exploration potential.