准噶尔盆地西北缘走滑构造与油气勘探

doi:10.7623/syxb201106007

石油学报 ›› 2011, Vol. 32 ›› Issue (6): 976-984.DOI: 10.7623/syxb201106007

准噶尔盆地西北缘走滑构造与油气勘探

邵雨 1 汪仁富 2 张越迁 1 汪新 2 李震华 1 梁瀚 2

1中国石油新疆油田公司勘探开发研究院新疆克拉玛依 834000； 2浙江大学地球科学系浙江杭州 310027

收稿日期:2011-05-25 修回日期:2011-08-29 出版日期:2011-11-25 发布日期:2012-01-17
通讯作者: 邵雨
作者简介:邵雨，男，1962年9月生，2004年获中国科学院研究生院博士学位，现为中国石油新疆油田公司勘探开发研究院院长、高级工程师，主要从事石油地球物理研究。
基金资助:
国家自然科学基金项目（No.41072155）和国家科技重大专项（2011ZX05009-001）联合资助。

Strike-slip structures and oil-gas exploration in the NW margin of the Junggar Basin,China

SHAO Yu 1 WANG Renfu 2 ZHANG Yueqian 1 WANG Xin 2 LI Zhenhua 1 LIANG Han 2

Received:2011-05-25 Revised:2011-08-29 Online:2011-11-25 Published:2012-01-17

摘要/Abstract

摘要：

二维—三维地震资料、大地电磁测深资料（MT)及地表构造调查综合研究揭示，准噶尔盆地西北缘发育高陡走滑断层和正花状构造，可划分为扎伊尔哈拉阿拉特山（达尔布特断层）隆起区、断块褶皱带、斜坡带3个构造带。准噶尔盆地西北缘具有右行走滑变形性质，发育高陡走滑断层和雁行排列短轴倾伏背斜（鼻状构造），不发育逆冲推覆断层和线性褶皱。准噶尔盆地西北缘走滑构造发育于二叠纪末期—三叠纪，与相邻的达尔布特右行走滑断层同步发育；新生代，达尔布特断层发生左行走滑，但准噶尔盆地西北缘没有发生大的变形。准噶尔盆地西北缘3个构造带具有不同的圈闭类型和勘探目标，隆起区发育披覆不整合岩性油气藏，断块褶皱带发育背斜—断块油气藏，斜坡带发育不整合面控制的岩性油气藏。

关键词: 准噶尔盆地西北缘, 正花状构造, 雁行排列背斜, 达尔布特走滑断层, 油气圈闭

Abstract:

The fault system in the NW margin of the Junggar Basin, western China, affords an exceptional opportunity to document structural features of a major strike-slip fault using two-and three-dimensional seismic reflection and magnetotelluric (MT) data. The fault zone displayed vertical strike-slip faults and positive flower structures, in which three structural units, the Zaire-Halaalat uplifted belt (Dalabute strike-slip fault), the Keramay-Xiazijie fault block folded belt, and the Mahu Lake slope belt were identified in the NW margin of the Junggar Basin. The right lateral strike-slip deformation occurs commonly in this margin, thus vertical strike-slip faults and en echelon brachy plunging anticlines (nose-like structure) are well-developed in the Zaire-Haraalat uplifted belt close to the Dalabute strike-slip fault, while thrust-nappe faults and linear folds are seldom seen. Devonian to Upper Carboniferous volcanic, volcaniclastic and flysch rocks crop out along the belt. The Keramay-Xiazijie fault-block folded belt consists of slip faults and en echelon folds. The stepping pattern and orientation of en echelon structures indicated a right-lateral sense about N20—40E azimuth of slip in the west part and W-E azimuth of slip in the east part of the Keramay-Xiazijie belt. Fault segments with a clockwise orientation were characterized by convergent structures. The Carboniferous, Permian and Triassic had folded and formed unconformity by Jurassic and Cretaceous, indicating a deformation developed in Late Permian to Triassic. The exposed Dalabute fault was reactivated in Cenozoic, which was affected by the long-distance compression of the Cenozoic India-Asia collision. The NW margin of the Junggar Basin was not apparently deformed in Cenozoic and three different types of potential hydrocarbon traps were formed in the NW margin of the Junggar Basin, they are drape unconformity lithologic traps in the uplifted belt, anticlinal fault-block traps in the Keramay-Xiazijie fault block folded belt and unconformity-controlled lithologic traps in the Mahu Lake slope belt.

Key words: NW margin of Junggar Basin, positive flower structure, en echelon anticline, Dalabute strike-slip fault, hydrocarbon trap

邵雨汪仁富张越迁汪新李震华梁瀚. 准噶尔盆地西北缘走滑构造与油气勘探[J]. 石油学报, 2011, 32(6): 976-984.

SHAO Yu WANG Renfu ZHANG Yueqian WANG Xin LI Zhenhua LIANG Han. Strike-slip structures and oil-gas exploration in the NW margin of the Junggar Basin,China[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(6): 976-984.

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准噶尔盆地西北缘走滑构造与油气勘探

Strike-slip structures and oil-gas exploration in the NW margin of the Junggar Basin,China

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