2012年6月，第18卷，第2期，318-327页 June 2012,Vol.18,No.2,p.318327
高校地质学报
Geological Jourmal of China Universities
准噶尔盆地陆东一五彩湾地区火山岩中
天然气富集的主控因素吴小奇1，2，刘德良2，李振生3
1.中国石油天然气股份有限公司石油勘探开发研究院，北京100083
2.中国科学技术大学地球和空间科学学院，合肥230026； 3.合肥工业大学资源与环境工程学院，合肥230009
摘要：近年来准噶尔盆地陆东一五彩湾地区石炭系火山岩中发现了丰富的天然气资源，包括克拉美丽和五彩湾两个气田，因此石炭系成为北疆油气勘探的主要目的层之一，陆东一五彩湾地区天然气主要位于石炭系顶部的火山岩风化壳内，主要为煤成气，来自石炭系腐殖型烃源岩。本文在对陆东一五彩湾地区典型气藏削面进行分析的基础上，探讨了石炭系火山岩中天然气富集的主控因素。结果表明，邻近烃源岩和生烃凹陷有利于形成气藏；风化淋滤和构造作用的改造是火山岩物性得到改善而发育有效储集空间的关键因素；断裂和不整合构成了油气垂向和侧向运移的有利通道；海西期以来的各个构造期，陆东一五彩湾地区石炭系圈闭和油气藏受到了不同程度的影响，其中火山岩气藏良好的生储盖配置定型于海西期，面燕山中期则是该区天然气成藏的关键时期。
关键词：陆东一五彩湾；火山岩；天然气；控制因素；构造演化
中图分类号：P618.13
文献标识码：A
文章编号：1006-7493（2012）02-0318-10
TheMainControllingFactorsontheEnrichmentofNaturalGasinVolcanic
RocksinLudong-WucaiwanArea,JunggarBasin
WU Xiaoqi2,LIU Deliang,LIZhensheng
1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, Chinas 2. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; 3. College of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
Abstract: Plentiful natural gas resource has been discovered in Carboniferous volcanic rocks in LudongWucaiwan area in Junggar Basin in recent years. Kelameili and Wucaiwan gas fields were found in this area, and Carboniferous has been one of the major targets in oil and gas exploration in northern Xinjiang. As a special type of reservoirs, volcanic reservoirs have attracted wide attention. The natural gas in LadongWucaiwan area was mainly preserved in the weathering crust of volcanic rocks at the top of Carboniferous, and was mainly coal-derived gas from Carboniferous humic-type source rocks, LudongWucaiwan area eeassesaasas Di'nan Uprise and Wucaiwan Sag, The accumulation properties of oil and gas in volcanic reservoirs are different from those in conventional ones, Besides the well reservoir quality,the matching of several favorable factors such as hydrocarbon generation, migration, and preservation were also necessary, Based on the analysis of typical gas reservoirs in LudongWucaiwan area, this
收稿日期：2011-09-19；修回日期：2011-1031
基金项目：国家自然科学基金（40972134；41172117）；中国石油勘探开发研究院中青年创新基金（2010-B-16-04）联合资助作者简介：吴小奇，男，1982年生，博士后，矿产普查与勘探专业；E-mail:xqw@163.eom