新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (5): 565-568.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地西北缘火山岩孔隙特征及演化

刘喜顺1, 郭建华1, 瞿建华2, 张源志3, 李炉明3   

  1. 1.中南大学地学与环境工程学院，长沙410083;
    2.中国石油新疆油田分公司勘探开发研究院，新疆克拉玛依834000;
    3.北京华油明信能源技术有限责任公司，北京102200
  • 收稿日期:2008-03-17 发布日期:2020-10-19
  • 作者简介:刘喜顺(1973-),男,河南濮阳人,在读博士研究生,石油地质,(Tel)13787318483 (E-mail)liuxishun2002@yahoo.com.cn.

The Porosity and Evolution of Volcanic Rocks in Northwestern Margin of Junggar Basin

LIU Xi-shun1, GUO Jian-hua1, QU Jian-hua2, ZHANG Yuan-zhi3, LI Lu-ming3   

  1. 1. School of Geology and Environment Engineering, Central South University, Changsha, Hunan 410083, China;
    2. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    3. Beijing Sinopetroleum Mingxin Energy Technology Company Ltd., Beijing 102200, China
  • Received:2008-03-17 Published:2020-10-19

PDF

269

摘要： 对准噶尔盆地西北缘火山岩岩性特征、储集空间类型、孔隙演化、孔缝组合类型及其主要影响因素进行了深入分析，研究了区内6 种火山岩的岩性特征和6 种类型储集空间特征及形成机理，认为火山岩原生孔隙因连通性差而不能形成有效储集层，而经过后期改造作用，尤其是溶蚀作用和构造运动，将大大改善火山岩的储集性能而成为有效储集层。分析了主要的火山岩储集层孔隙演化过程及其控制因素，如安山岩、火山角砾岩和凝灰岩等。在上述研究分析的基础上，将研究区火山岩储集空间的演化过程分为5 个阶段：火山岩的形成阶段、风化剥蚀淋滤阶段、埋藏和构造作用阶段、溶蚀改造作用阶段和油气聚集成藏阶段。

关键词: 准噶尔盆地, 火成岩, 储集空间, 形成机理, 演化阶段

Abstract: In-depth analysis is made on lithology, storage space type, porosity evolution, pore-fissure combination of volcanic rocks and their influencing factors in northwestern margin of Junggar basin. For given six types of the lithologies and the storage spaces and their forming mechanisms, it is suggested that the volcanic rocks with poor connective primary porosity didn't become effective reservoir rocks until the post reconstruction that allowed it to greatly improve the volcanic reservoir quality such as dissolution and tectonic movement appeared. Also, the process and controlling factors for such main the volcanic reservoir porosity evolution as andesite, volcanic breccia and tuff are analyzed. Based on these analyses, the evolution process in this area could be divided into five stages as follows: formation stage, weathering-leaching stage, burying and structural process stage, solution-reconstruction stage and oil-gas accumulation stage.

Key words: Junggar basin, volcanic rock, storage space, forming mechanism, evolution stage

中图分类号: