石油学报 ›› 2004, Vol. 25 ›› Issue (1): 48-51.DOI: 10.7623/syxb200401010

• 地质勘探 • 上一篇    下一篇

埕北30潜山带太古界储层特征及其影响因素

袁静   

  1. 石油大学地球资源与信息学院, 山东东营, 257061
  • 收稿日期:2002-09-18 修回日期:2003-01-13 出版日期:2004-01-25 发布日期:2010-05-21
  • 作者简介:袁静,女,1972年6月生,1999年毕业于石油大学(北京),获博士学位,现为石油大学(华东)地球资源与信息学院副教授,主要从事沉积学和石油地质科研和教学工作.E-mail:yuanjing@mail.hdpu.edu.cn
  • 基金资助:
    中国石油天然气集团公司"九五"科技攻关项目"渤海湾及外围深层储层评价"(970206-02-01)资助.

Characters and influence factors on Archeozoic reservoir in the Chengbei 30 buried hills

YUAN Jing   

  1. Faculty of Earth Resource and Information, University of Petroleum, Dongying 257061, China
  • Received:2002-09-18 Revised:2003-01-13 Online:2004-01-25 Published:2010-05-21

摘要: 通过岩心观察、薄片鉴定、物性分析、扫描电镜观察等技术手段,研究了埕北30潜山带太古界储层的主要岩石类型、储集空间类型、物性特征和影响因素.研究结果表明,埕北30潜山带太古界4类结晶岩中,以碎裂状混合岩化黑云母二长片麻岩裂缝最为发育,物性最好,产能最高,在Pt-Art不整合面以下约250m范围内一般均为有效储层,储层厚度为100~150m.埕北30潜山带太古界储层主要是裂隙缝和微裂隙含油,溶蚀孔隙(包括晶溶孔、晶间孔、晶模孔)和晶间微孔隙也有一定的储集意义.影响研究区太古界结晶岩储集性的因素有岩性、断裂活动引起的碎裂作用、岩浆侵入引起的混合岩化作用、古表生风化作用和深层溶解作用等.

关键词: 埕北30潜山带, 太古界, 储层特征, 影响因素

Abstract: The main types of rocks and reservoir spaces,characters and influence factors of Archeozoic reservoir in the Chengbei 30 buried hills were studied by means of observation on cores,electronic scanning and thin-section analysis.There are four types of crystalling rocks in Archeozoic of the Chengbei 30 buried hills.The most developed fractures are in cataclastic metamorphic migrated biotite feldspar gneiss.The physical properties of those fractures are the best,and their productivities are the highest.The reservoirs under the unconformity between Art and Pt around 250 meters are the valuable ones,and the thickness of reservoirs is in the range of 100 meters to 150 meters.The fractures and micro-cracks are the main reservoir spaces for oil accumulation in the Archeozoic reservoir of the Chengbei 30 buried hills.The dissolving pores,including crystal dissolving pores,inter-crystal dissolving pores and crystal casting pores,and micro-inter-crystal pores are the available reservoir spaces.The main influence factors on reservoir accumulation in Archeozoic reservoir of the Chengbei 30 buried hills include the lithology,cataclasis caused by faulting,magmatization caused by magmatite intrusion,weathering and dissolution in the deep formation.

Key words: Chengbai 30 buried hills, Archeozoic, reservoir characters, influence factors

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