2012年3月，第18卷，第1期，164-173页 March2012，Vol.18，No.1，p.164173
高校地质学报
Geological Journal of China Universities
准噶尔盆地滴西地区石炭系火山岩
储集空间特征及其分布
熊益学，郝爱华，冉启全2，葛玉辉，刘小洪"，孙圆辉
1.西南石油大学油气藏地质及开发工程国家重点实验室，成都610500；2.中国石油勒探开发研究院，北京100083 摘要：采用岩芯观察、薄片鉴定、成像测井及地震资料分析等手段，对滴西地区石炭系火山岩储集空间类型、形成因素及展布特征进行了研究。结果表明，滴西地区石炭系火山岩储集层岩类主要为玄武岩、正长斑岩、火山角砾岩及熔结凝灰岩。储集空间可划分为原生孔隙、次生孔腺、原生裂缝及次生裂缝四种类型。其中，原生孔隙主要为气孔和粒间孔，原生裂缝发育收缩缝和炸裂缝；次生孔隙以晶内溶孔、基质溶孔占绝对优势，次生裂缝以构造缝为主。研究区控制储集空间形成的因素主要为火山岩岩性岩相、风化淋滤作用、构造作用及溶蚀作用，原生储集空间类型及发育位置受岩性岩相控制，而后三种作用是该区形成次生储集空间的主要原因，且从西北至东南方向，其控制因素依次由岩性岩相过渡为风化淋滤作用，直至构造和溶蚀作用。据此，滴西17，14井区的玄武岩原生气孔、火山角砾岩内粒间孔受岩性岩相控制均呈东北向长条状展布；滴西10井区熔结凝灰岩和火山角砾岩中的次生溶孔围绕断裂展布；滴西18井区的斑晶、基质溶孔受岩体及断裂共同制约。
关键词：火山岩储集空间；控制因素；分布特征；石炭系；滴西地区
中图分类号：P618.130.21
文献标识码：A
文章编号：1006-7493（2012)0164-10
Characteristics and Distribution of Reservoir Spaces of the Carboniferous
Volcanic Rocks in Dixi Area, Junggar Basin
XIONGYixueXIAihua",RANQiquan,GEYuhui',LIUXiaohong',SUNYuanhui
1. Southwest Petroleum University, State Key Laboratory of Oil and Gas Reservior Geology and Exploitation, Chengdu 610500, China:
2. Institute of Petroleum Exploration and Development of China, Beijing 100083, China
Abstract: Reservoir space types, forming factors, and distribution of the Carbonferons volcanic rocks in Dixi area are investigated by core inspection, thin section analyses, imaging logging, and seismic data interpretations. The results show that rock types of carboniferous volcanic reservoir in Dixi area include mainly basalt, syenite porphyry, volcanic breccia, and ignimbrite, Reservoir space can be divided into four types, namely primary pores, secondary pores, primary fractures, and secondary fractures. The primary pores are mainly gas pores and intergranular pores. Primary fractures include shrinkage induced joints and explosion related cracks, Intragranular dissolved pores and groundmass dissolution pores predominatec the secondary pores, and secondary fractures are prevailing tectonic fractures. The controlling factors of the reservoir space are volcanic lithology and facies, weathering and leaching, tectonism and dissolution. The types and distribution of primary reservoir space are controlled by lithology and facies, while secondary pore space and fracture are govermed by the later three factors, From the northwest to the southeast, the controlling factors changed from the volcanic lithology and facies to the weathering and leaching, tectonism and
收稿日期：2011-06-29；修回日期：2011-0802
基金项目：国家重点基础研究发展计划（973）项目（2007CB209507）
作者简介：熊益学，男，1983年7月生，在读博士研究生，矿产普查与勘探专业；E-mail:xiongyixue2002@yahoo.com.cr
*通讯作者：部爱华，博士生导师，矿物岩石矿床学专业；E-mail:aihuaxi@163.com