西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

孤西地区中生界火山岩储层发育机制

郭峰*,崔殿   

  1. 中国石化胜利油田分公司地质科学研究院,山东东营257015
  • 出版日期:2016-04-11 发布日期:2016-04-11
  • 通讯作者: 郭峰,E-mail:guofeng_gig@qq.com
  • 基金资助:

    国家重大专项(2011ZX05006 003);中国石化股份公司研究项目(P13134)。

The Development Mechanism of Mesozoic Volcanic Reservoirs#br# in Guxi Area

GUO Feng*, CUI Dian   

  1. Geology Scientific Research Institute,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257015,China
  • Online:2016-04-11 Published:2016-04-11

摘要:

针对研究区火山岩储层横纵向变化快、储层非均质性强、储层发育模式不清等问题,通过开展对区内28 口井
观察取样,进行200 余块薄片的镜下观察及87 块物性样品统计分析,明确了不同岩性的储集物性特征,综合判定研究
区总体为中低孔低渗特低渗储层,并总结了火山岩储层孔隙演化过程及物性变化规律;明确了冷凝固结、热液充
填作用、构造作用/风化淋滤、埋藏充填、埋藏溶蚀等控储主要因素,最终结合油气运移过程建立起火山岩储层在岩性、
不整合、断裂等综合因素控制下的发育模式,为下步有利储层的综合预测打下基础。

关键词: 中生界, 火山岩, 控储因素, 发育模式, 孤西地区

Abstract:

The Mesozoic volcanic reservoirs are discovered in Gunan 2 Block and Ken 93 Block in Guxi area,which indicates
the huge potential for exploration of the Mesozoic volcanic rocks in this area. Given that the physical properties of Mesozoic
volcanic reservoirs vary fast in vertical and horizontal direction,we clarified the physical characteristics of different lithology
by observing under microscope 200 slices from 28 wells and did statistical analysis of 87 reservoir property samples,and found
out that the reservoir is with middle to low porosity,and low to extra low permeability on the whole. The evolution process of
reservoir pore and the law of physical characteristics change are also summarized. The controlling factors of reservoirs,such
as condensation-consolidation,hydrothermal filling,structural effect/ weathering,burial and dissolution,are clarified. Finally,
the development model of volcanic reservoirs under the control of lithology,unconformity and fractures are established,
combined with the analysis of oil and gas migration process,and the special model of volcanic reservoirs is set up in this region.

Key words: Mesozoic, volcanic rocks, controlling factors of reservoir, development model, Guxi area

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