石油学报 ›› 2011, Vol. 32 ›› Issue (1): 83-89.DOI: 10.7623/syxb201101012

• 地质勘探 • 上一篇    下一篇

西昆仑山前甫沙—克里阳地区新生代变形特征及油气控制作用

程晓敢 1,2  雷刚林 3  陈汉林 1,2  杜治利 3  廖  林 1,2  罗俊成 3  师  骏 3   

  1. 1浙江大学地球科学系  浙江杭州  310027; 2浙江大学教育部含油气盆地构造研究中心  浙江杭州  310027; 3中国石油塔里木油田公司勘探开发研究院  新疆库尔勒  841000
  • 收稿日期:2010-06-28 修回日期:2010-09-07 出版日期:2011-01-25 发布日期:2011-03-23
  • 通讯作者: 程晓敢
  • 作者简介:程晓敢,男,1974年10月生,2006年获得浙江大学博士学位,现为浙江大学地球科学系副教授,主要从事造山带和盆地构造研究。
  • 基金资助:

    国家自然科学基金(No.40972138)和国家科技重大专项(2009ZX05009-001)联合资助。

Cenozoic structural deformation of the Fusha-Keliyang area in the piedmont of the western Kunlun Mountains and its control on hydrocarbon accumulation

CHENG Xiaogan 1,2  LEI Ganglin 3  CHEN Hanlin 1,2  DU Zhili 3  LIAO Lin 1,2  LUO Juncheng 3  SHI Jun 3   

  • Received:2010-06-28 Revised:2010-09-07 Online:2011-01-25 Published:2011-03-23

摘要:

甫沙—克里阳地区位于西昆仑山弧形构造带的东段,是研究西昆仑山前冲断带变形特征的关键区域。在详细地面地质调查和钻井分析的基础上,利用最近完成的高分辨率地震资料,对甫沙—克里阳地区的新生代构造变形特征进行了研究。认为研究区自南向北由甫沙、柯克亚和固满—合什塔格3排构造带组成,其中甫沙构造带的结构特征在横向上有较大差异;3排构造带变形时间由南向北变新,冲断带表现为“前展式”的变形,同一排构造带的变形存在着由西向东迁移的特征;研究区新生代总缩短量为54.5km,缩短率为35.9%;新生代构造变形对研究区的油气聚集具有重要的控制作用,甫沙构造带的深层构造是下一步最有利的勘探领域。

关键词: 西昆仑山前, 甫沙—克里阳地区, 新生代, 构造变形特征, 油气聚集

Abstract:

The Fushan-Keliyang area is situated in the eastern segment of the western Kunlun arc tectonic belt, providing key constraints for studying deformation characters of the western Kunlun piedmont thrust belt. Combined with geologic survey, drilling data and recent high-resolution seismic profiles, this study analyzed the Cenozoic deformation characters of the Fushan-Keliayang area. The present paper proposed that the studied area consisted of three ranges of structural belts from south to north, i.e. Fusha, Kekeya and Guman-Heshitag, of which the Fusha structural belt showed obviously lateral variations in configuration characters. Among these structural belts, the deformed timing of individual structural belts got younger northward, displaying characters of “break-forward” deformation. Within the each range of structural belts, deformation propagated from west to east. Based on the balanced section calculation, the total shortening of the Cenozoic structural belts in the Fusha-Keliyang area accounted for 54.5 km and the shortening rate was 35.9%. Therefore, the Cenozoic deformation greatly controlled hydrocarbon accumulation, and deep structures of the Fusha structural belts were considered to be the best target for hydrocarbon exploration.

Key words: piedmont of the western Kunlun Mountains, Fusha-Keliyang area, Cenozoic, characters of structural deformation, hydrocarbon accumulation