石油学报 ›› 2015, Vol. 36 ›› Issue (s1): 31-39.DOI: 10.7623/syxb2015S1004

• 地质勘探 • 上一篇    下一篇

束鹿凹陷沙河街组三段下亚段泥灰岩-砾岩致密储层储集空间类型及成因

韩超1, 田建章2, 赵蕊1, 罗冬香3, 曲莹1, 鱼占文2, 辛玮江2, 王四成2, 刘燕2   

  1. 1. 中国地质大学能源学院 北京 100083;
    2. 中国石油华北油田公司 河北任丘 062552;
    3. 中国石油冀东油田公司采油工艺研究院 河北唐山 063004
  • 收稿日期:2015-03-09 修回日期:2015-08-22 出版日期:2015-11-30 发布日期:2015-12-09
  • 通讯作者: 韩超,男,1988年9月生,2013年获山东科技大学学士学位,现为中国地质大学能源学院博士研究生,主要从事沉积学及油气储层地质学方面的研究工作。Email:hanchao8809@126.com
  • 作者简介:韩超,男,1988年9月生,2013年获山东科技大学学士学位,现为中国地质大学能源学院博士研究生,主要从事沉积学及油气储层地质学方面的研究工作。Email:hanchao8809@126.com
  • 基金资助:

    国家重大科技专项(2011ZX05009)和中国石油天然气股份有限公司重大科技专项(2014E-035)资助。

Reservoir space types and its genesis in tight calcilutite-rudstone reservoir of the lower part of Member 3 of Shahejie Formation, Shulu sag

Han Chao1, Tian Jianzhang2, Zhao Rui1, Luo Dongxiang3, Qu Ying1, Yu Zhanwen2, Xin Weijiang2, Wang Sicheng2, Liu Yan2   

  1. 1. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
    2. PetroChina Huabei Oilfield Company, Hebei Renqiu 062552, China;
    3. Research Institute of Oil Recovery Technology, PetroChina Jidong Oilfield Company, Hebei Tangshan 063004, China
  • Received:2015-03-09 Revised:2015-08-22 Online:2015-11-30 Published:2015-12-09

摘要:

通过偏光显微镜、荧光显微镜、阴极发光显微镜、场发射电镜和物性实验等手段,系统剖析了束鹿凹陷沙河街组三段下亚段泥灰岩-砾岩储层储集空间类型,探讨了储集空间成因及控制因素。研究区泥灰岩-砾岩主要发育纹层状泥灰岩、块状泥灰岩、颗粒支撑陆源砾岩、杂基支撑陆源砾岩、混源砾岩5种岩性,储层致密,孔渗极差,属特低孔特低渗储层。储集空间主要为次生孔隙和裂缝,发育溶孔、有机质孔、砾内孔、粒(晶)内孔隙、粒(晶)间孔隙等,以及构造缝、层间页理缝、贴砾缝、收缩缝、有机酸溶蚀缝等;其中,泥灰岩储集空间以有机质孔隙、页理缝、粒(晶)间孔隙为主,砾岩储集空间以砾内孔、溶孔、构造缝为主。储集空间的发育主要受构造作用、沉积作用、物源和成岩作用等因素综合影响。

关键词: 束鹿凹陷, 泥灰岩-砾岩, 储集空间, 有机质孔隙, 沙河街组三段下亚段

Abstract:

Using polarization microscope, fluorescence microscope, cathodoluminescence microscope, field emission scanning electron microscope and physical property experiments, reservoir space types of calcilutite-rudstone reservoirs in the lower part of Member 3 of Shahejie Formation, Shulu sag, were analyzed systematically, and genesis of reservoir space and its controlling factors were discussed. Five kinds of lithology, i.e., laminated calcilutite, massive calcilutite, grain-supported terrigenous rudstone, matrix-supported terrigenous rudstone and mixed-source rudstone are well developed in this calcilutite-rudstone reservoirs. This kind of reservoir is tight and characterized by extremely poor porosity and permeability, which belongs to low porosity and ultra-low permeability reservoir. Reservoir spaces mainly include secondary pores and fissures, such as dissolution pore, organic-matter pore, intra-gravel pore, intra-particle (crystal)pore, inter-particle (crystal)pore, tectonic fissure, interlayer bedding fissure, gravel-lined fissure, contraction fissure and organic-acid dissolution fissure. Reservoir spaces of calcilutite are dominated by organic-matter fissure, bedding fissure and inter-particle (crystal)pore, while those of rudstone are mainly intra-gravel pore, dissolution pore and tectonic fissure. Development of reservoir spaces are mainly influenced by combined effects of tectonism, sedimentation, provenance and diagenesis.

Key words: Shulu sag, calcilutite-rudstone, reservoir space, organic-matter pores, lower part of Member 3 of Shahejie Formation

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