西昆仑山前柯东构造新生代构造变形及油气意义

doi:10.7623/syxb201301003

石油学报 ›› 2013, Vol. 34 ›› Issue (1): 22-29.DOI: 10.7623/syxb201301003

西昆仑山前柯东构造新生代构造变形及油气意义

杜治利 1　梁　瀚 2　师　骏 1 　陈　才 1　王　宇 1

1.中国石油塔里木油田公司勘探开发研究院新疆库尔勒 841000； 2.浙江大学地球科学系浙江杭州 310027

收稿日期:2012-07-20 修回日期:2012-10-23 出版日期:2013-01-25 发布日期:2013-04-09
通讯作者: 梁瀚，男，1982年2月生，2009年获西南石油大学构造地质学专业硕士学位，现为浙江大学构造地质学专业博士研究生,主要从事盆地构造研究。
作者简介:杜治利，男，1979年7月生，2007年获中国科学院地质与地球物理研究所博士学位，现为中国石油塔里木油田公司高级工程师，主要从事构造地质学研究。
基金资助:
国家重大科技专项（2008ZX05003）资助。

Cenozoic structural deformation and hydrocarbon exploration of Kedong structure in the piedmont of western Kunlun mountain

DU Zhili 1 　LIANG Han 2　 SHI Jun 1 　CHEN Cai 1　 WANG Yu 1

Received:2012-07-20 Revised:2012-10-23 Online:2013-01-25 Published:2013-04-09

摘要/Abstract

摘要：

利用高分辨率三维地震剖面、地表露头以及钻井数据分析了西昆仑山前克里阳-甫沙构造带东段柯东构造的特征，认为柯东构造为压扭构造，主要发育基底断层，表现为强烈变形的褶皱前翼和宽缓的后翼（顶部）。生长地层揭示克里阳-甫沙断层于上新世逆冲形成柯东单斜（鼻隆）,具有卷入翼部旋转的变形机制;后期克里阳-甫沙断层发育突破断层将柯东单斜切割为断块，并导致地表出露一套高陡倒转的地层，这套地层卷入了侏罗系-新生界。柯东构造的深部断块构造变形较弱,使得油气藏得以保存，KD1井显示这类断块具有很好的勘探潜力。

关键词: 西昆仑山前, 柯东构造, 生长地层, 基底断层, 压扭构造

Abstract:

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.

Key words: piedmont of the western Kunlun mountain, Kedong structure, growth stratum, basement-involved fault, transpression structure

杜治利　梁　瀚　师　骏　陈　才　王　宇 . 西昆仑山前柯东构造新生代构造变形及油气意义[J]. 石油学报, 2013, 34(1): 22-29.

DU Zhili　LIANG Han　SHI Jun　CHEN Cai　WANG Yu . Cenozoic structural deformation and hydrocarbon exploration of Kedong structure in the piedmont of western Kunlun mountain[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(1): 22-29.

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西昆仑山前柯东构造新生代构造变形及油气意义

Cenozoic structural deformation and hydrocarbon exploration of Kedong structure in the piedmont of western Kunlun mountain

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