[1]李进步,吴小宁,赵忠军,等.苏里格气田上古生界裂缝特征及成因探讨[J].西安科技大学学报,2016,(03):414-421.[doi:10.13800/j.cnki.xakjdxxb.2016.0319]
 LI Jin-bu,WU Xiao-ning,ZHAO Zhong-jun,et al.Characteristics and origin of Upper Paleozoic fractures in Sulige Gas Field[J].Journal of Xi'an University of Science and Technology,2016,(03):414-421.[doi:10.13800/j.cnki.xakjdxxb.2016.0319]
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苏里格气田上古生界裂缝特征及成因探讨(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年03期
页码:
414-421
栏目:
出版日期:
2016-06-30

文章信息/Info

Title:
Characteristics and origin of Upper Paleozoic fractures in Sulige Gas Field
文章编号:
1672-9315(2016)03-0414-08
作者:
李进步12吴小宁12赵忠军12李浮萍12 王 龙12冯 敏12罗文琴3
1.中国石油长庆油田分公司 苏里格气田研究中心,陕西 西安 710018;
2.低渗透油气田勘探开发国家工程实验室, 陕西 西安 710018;
3.斯伦贝谢长和油田工程有限公司,陕西 西安 710018
Author(s):
LI Jin-bu12WU Xiao-ning12ZHAO Zhong-jun12LI Fu-ping12 WANG Long12FENG Min12LUO Wen-qin3
1.Sulige Gas Field Research Center of Changqing Oilfield Company,Petro China,Xi'an 710018,China;
2.National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas,Xi'an 710018,China;
3.SCP Oilfield Services Co.,Lt
关键词:
苏里格 裂缝 分布特征 岩石结构 构造应力场 形成机制 鄂尔多斯盆地
Keywords:
sulige gas field fracture distribution characteristics rock texture tectonic stress field formation mechanism Ordos Basin
分类号:
TE 121
DOI:
10.13800/j.cnki.xakjdxxb.2016.0319
文献标志码:
A
摘要:
为研究鄂尔多斯盆地苏里格气田上古生界烃源岩及储集层中裂缝发育特征及成因机理,采用野外露头、岩心、铸体薄片及成像测井等资料,通过裂缝观察与描述,对苏里格气田上古生界砂岩及泥岩中普遍发育的裂缝进行系统研究,总结了不同沉积结构岩石中裂缝发育特征及组合类型,并结合构造应力场背景及岩石力学性质,对裂缝形成机制进行了探讨。研究表明裂缝在苏里格气田上古生界砂岩、泥岩中普遍发育,在泥质岩、层面结构发育的砂岩以及岩性界面处常发育平行层面裂缝,并伴有低角度斜向裂缝。在层面结构不发育、结构比较致密或均一的砂岩中主要发育近垂向裂缝。裂缝的形成受构造应力场与沉积岩结构共同控制,水平方向的构造挤压与岩石层面平行是导致平行层面裂缝、低角度斜向裂缝形成的主要原因; 剪切作用是导致厚层致密砂岩中形成近垂向裂缝的主要原因,此外盆地剥蚀作用对形成裂缝具有一定影响。 研究成果对天然气输导体系及成藏机理研究具有理论指导意义。
Abstract:
This paper has made a systematic study on characteristics and origins of fractures in different kinds of sedimental lithologies in Sulige gas field,based on field outcrop,cores,thin section and imaging logging.It recognized the types of characteristics and combination of fractures in rocks with different sedimentary structures,and analyzed the origins in the aspects of geomechanics and rock mechanics.Fractures are widely developed in mudstone and sandstone in Sulige gas field.Plane-parallel fractures and low-angle oblique fractures appear in the mud rock,on the interface between sandstone and mudstone and in sand rock of different grain sizes.Vertical and high-angle inclined fractures appear in the rock such as tight sand or homogeneous sand rock,where the bed planes are not developed.The fracture type is controlled by regional stress field and textures of rocks.Horizontal compressive stress field and interfaces between different rocks are key factors to cause Plane-parallel fractures and low-angle oblique fractures.Shear stress field is the main factor to cause vertical and high-angle inclined fractures,and denudation basins are prone to the development of factures.This research is a major approach to understanding the gas migration system and reservoir formation.

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备注/Memo

备注/Memo:
基金项目:长庆油田油气当量上产5 000万吨关键技术研究(2010E-1306); 致密气藏开发重大工程技术研究(2012E-23)
通讯作者:李进步(1974-),男,陕西西安人,硕士,高级工程师,E-mail:ljb2_cq@petrochina.com.cn
更新日期/Last Update: 2016-05-15