油气地质

歧口凹陷歧南斜坡深部储层特征及综合评价

  • 王庆如 ,
  • 李敬功
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  • 1.中国石油勘探开发研究院西北分院,甘肃兰州730020; 2.中国石油大港油田分公司勘探开发研究院, 天津300280; 3.中国石油玉门油田分公司勘探开发研究院,甘肃酒泉735019
张晶(1977-),女,博士,主要从事沉积学与油气勘探研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535 号。电话:(0931)8686380。E-mail:Jing_zhang@petrochina.com.cn

网络出版日期: 2013-11-26

基金资助

中国石油天然气股份有限公司重大科技专项“歧口富油气凹陷大油气田勘探及综合配套技术研究”(编号:2008-030504)资助

Characteristics and comprehensive evaluation of deep reservoirs in Qinan ramp, Qikou Sag

  • WANG Qingru ,
  • LI Jinggong
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  • 1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China; 2. Research Institute of Exploration and Development, PetroChina Dagang Oilfield Company, Tianjin 300280, China; 3. Research Institute of Exploration and Development, PetroChina Yumen Oilfield Company, Jiuquan 735019, China

Online published: 2013-11-26

摘要

运用岩石薄片、铸体薄片、扫描电镜及物性分析等资料,对歧口凹陷歧南斜坡深部储层特征及影响 因素进行了深入研究。结果表明:沙三段储层属特低孔、低孔-特低渗型,纵向上发育3 个次生孔隙发育 带;沉积相带、溶蚀作用和异常高压是影响深层次生孔隙发育的三大主要因素;裂缝的发育对深部储层也 具有改造作用。根据储层物性、砂岩厚度和压力系数等,将研究区储层分为4 类,其中Ⅰ,Ⅱ类储层物性较 好,是今后增储上产的主要储层。

本文引用格式

王庆如 , 李敬功 . 歧口凹陷歧南斜坡深部储层特征及综合评价[J]. 岩性油气藏, 2013 , 25(6) : 46 -52 . DOI: 10.3969/j.issn.1673-8926.2013.06.009

Abstract

By analyzing thin sections, scanning electronic microscope and physical properties,this paper studied the characteristics and influencing factors of deep reservoirs in Qinan ramp of Qikou Sag. The result shows that the third member of Shahejie Formation belongs to low porosity and ultra-low permeability reservoir, there developed three secondary pore zones in the vertical direction. The development of deep secondary pores is dominated by sedimentary facies belt, dissolution and anomalous pressure, and the occurrence of fractures can reform the deep reservoir. According to the physical properties, sandstone thickness and pressure coefficient, the reservoir in the study area can be divided into four types. The reservoirs of type Ⅰ and Ⅱ have better physical properties and they are the main reservoirs to increase production in the future.

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