岩性油气藏 ›› 2015, Vol. 27 ›› Issue (2): 62–69.doi: 10.3969/j.issn.1673-8926.2015.02.010

• 油气地质 • 上一篇    下一篇

昆北断阶带基岩储层特征及油气成藏条件

刘桂珍1,张德诗2,李能武2#br#   

  1. 1. 西安石油大学 地球科学与工程学院,西安 710065 ; 2. 中国石油青海油田分公司勘探开发研究院,甘肃 敦煌 736202
  • 出版日期:2015-03-03 发布日期:2015-03-03
  • 第一作者:刘桂珍( 1976- ),女 , 博士,讲师,主要从事沉积学和储层地质学的教学与科研工作。 地址:( 710065 )陕西省西安市电子二路东段 18 号西安石油大学地球科学与工程学院。 E-mail : liuguizhen509@xsyu.edu.cn 。
  • 基金资助:

    陕西省教育厅专项科研计划项目鄂尔多斯盆地致密砂岩油藏储层致密史研究;(编号: 12JK0488 )与起伏地表有限元法叠前逆时 偏移研究;(编号: 13JK0845 )及中国石油股份有限公司科研项目“昆北断阶带变质岩实验分析(编号: 2009-81-05 )联合资助

Characteristics of basement reservoirs and hydrocarbon accumulation conditions in the northern Kunlun fault zone

LIU Guizhen1, ZHANG Deshi2, LI Nengwu2   

  1. 1. School of Earth Science and Engineering , Xi ’ an Shiyou University , Xi ’ an 710065 , China ; 2. Research Institute of Exploration and Development , PetroChina Qinghai Oilfield Company , Dunhuang 763202 , Gansu , China
  • Online:2015-03-03 Published:2015-03-03

摘要:

利用岩心、薄片、扫描电镜、测井及储层物性等资料,对昆北断阶带基岩储层特征及油气成藏条件等进行了研究。 结果表明: 基岩储层岩性主要为花岗岩和变质板岩;花岗岩主要以溶蚀缝、构造缝和溶蚀孔为储集空间,板岩主要以构造缝为储集空间;基岩油气成藏的有利条件包括良好的油气源,丰富的构造裂缝、溶蚀缝和溶蚀孔等储集空间,多样的圈闭类型和良好的疏导体系;基岩油气成藏的主控因素为多期次活动的断裂和不整合面及之下的风化壳。

关键词: 致密砂岩, 地震属性, 岩石物理, 叠前反演, 储层预测

Abstract:

Based on core observation, thin section identification, scanning electron microscopy analysis, logging data and physical properties, this paper studied the characteristics of basement reservoirs and hydrocarbon accumulation conditions in the northern Kunlun fault zone. The results indicate that the basement reservoirs are mainly of granite and metamorphic slate, the reservoir spaces of granite are mainly dissolved fractures, tectonic fractures and dissolved pores, and the main reservoir spaces of slate is tectonic fractures. The main conditions of hydrocarbon accumulation in the basement rocks include good source conditions, rich reservoir spaces of tectonic fractures, dissolved fractures and dissolved pores, as well as various traps and good migration system. Multi-stage faults, unconformity surface and weathering crust are the controlling factors of hydrocarbon accumulation.

Key words:  tight sand, seismic attributes, petrophysics, pre-stack inversion, reservoir prediction

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