油气地质

塔里木盆地轮南地区侏罗系砂岩储层成岩作用研究

  • 郑艳荣 ,
  • 屈红军 ,
  • 冯杨伟 ,
  • 王云 ,
  • 王力 ,
  • 李敏
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  • 1.长安大学地球科学与资源学院; 2.延长油田股份有限公司开发部; 3.延长油田股份有限公司定边采油厂
徐雄飞,1986 年生,男,长安大学在读硕士研究生,研究方向为油气田开发地质。地址:(710054)陕西省西安市雁塔区雁塔路 126 号长安大学地球科学与资源学院3 号学生公寓408 室。E-mail:405997141@qq.com

网络出版日期: 2011-10-20

Study on diagenesis of Jurassic sandstone reservoirs in Lunnan area, Tarim Basin

  • ZHENG Yanrong ,
  • QU Hongjun ,
  • FENG Yangwei ,
  • WANG Yun ,
  • WANG Li ,
  • LI Min
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  • 1. School of Earth Sciences and Resources, Chang’an University, Xi’an 710054, China; 2. Department of Development, Yanchang Petroleum Co. Ltd., Yan’an 716000, China; 3. Dingbian Oil Production Plant, Yanchang Petroleum Co. Ltd., Yan’an 716000, China

Online published: 2011-10-20

摘要

根据铸体薄片、扫描电镜、X-衍射、阴极发光及物性分析资料,结合前人研究成果,对塔里木盆地 轮南地区侏罗系砂岩储层的成岩作用进行了综合分析,并确定了其成岩作用类型。对其成岩演化序列的 研究表明:该储层已达到早成岩B 期至晚成岩A 期初阶段,并以晚成岩A 期为主。早成岩A 期,压实作 用破坏了侏罗系砂岩的原生孔隙结构;晚成岩A 期,长石颗粒强烈的溶蚀作用使侏罗系下统砂岩储层中 发育溶蚀孔,构成了油气聚集的必要空间;伊利石、绿泥石、伊/蒙混层中发育的晶间微孔隙较大程度地改 善了侏罗系中、上统砂岩的储集性能。

本文引用格式

郑艳荣 , 屈红军 , 冯杨伟 , 王云 , 王力 , 李敏 . 塔里木盆地轮南地区侏罗系砂岩储层成岩作用研究[J]. 岩性油气藏, 2011 , 23(5) : 21 -27 . DOI: 10.3969/j.issn.1673-8926.2011.05.005

Abstract

Based on cast slice, scanning electronic microscope, X-diffraction, cathodoluminescence and physical properties, combined with previous researhes, the diagenesis of Jurassic sandstone reservoirs in Lunnan area, Tarim Basin is analyzed, and the types of diagenesis are defined. The study on diagenetic evolutionary series shows that the diagenetic evolution of Jurassic sandstone has already been in B stage of early diagenesis to initial period of A stage of late diagenesis, with the latter being the majority. Compaction destroyed the primary pore structure of Jurassic sandstone intensively. The strong dissolution of feldspar particles at the A stage of late diagenesis made the dissolved pores develop in Lower Jurassic sandstone reservoirs, which constitutes the necessary space for oil and gas accumulation. The intergranular micropores developed in illite, chlorite, illite-smectite mixed-layer greatly improved the reservoir performance ofMiddle and Upper Jurassic sandstone.

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