文档介绍：第 25 卷第 6 期岩性油气藏
2013 年 12 月 LITHOLOGIC RESERVOIRS Dec. 2013
文章编号:1673-8926(2013)06-0046-07
歧口凹陷歧南斜坡深部储层特征及综合评价
张晶1,李双文1,刘化清1,袁淑琴2,牛海清1,刘志刚3
(,甘肃兰州 730020; ,
天津 300280; ,甘肃酒泉 735019)
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。
关键词:储层特征;次生孔隙;综合评价;深部储层;沙三段;歧口凹陷
中图分类号:+ 3 文献标志码:A
Characteristics prehensive evaluation of deep reservoirs
in Qinan ramp, Qikou Sag
ZHANG Jing1, LI Shuangwen1, LIU Huaqing1, YUAN Shuqin2, NIU Haiqing1, LIU Zhigang3
(1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China;
2. Research Institute of Exploration and Development, PetroChina Dagang pany, Tianjin 300280, China;
3. Research Institute of Exploration and Development, PetroChina Yumen pany, Jiuquan 735019, China)
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 zone