渤中 25-1 油田沙三段低渗储层特征及其成因
网络出版日期: 2014-06-06
基金资助
国家自然科学基金项目“砂泥成岩系统内成岩物质交换及其对砂岩溶蚀和胶结的影响”(编号:41302108)、国家重点基础研究发展 计划(973)项目子课题“中国西部叠合盆地深部有效碎屑岩储层成因机制与发育模式”(编号:2011CB201104)及中国石油大学(北 京)科研基金“不同类型盆地内砂岩孔隙与物性演化研究”(编号:KYJJ2012-01-18)联合资助
Characteristics and origin of low permeability reservoir of the third member of Shahejie Formation in Bozhong 25-1 oilfield
Online published: 2014-06-06
王明飞 , 屈大鹏 , 肖伟 , 凌涛 , 陈灵君 . 渤中 25-1 油田沙三段低渗储层特征及其成因[J]. 岩性油气藏, 2014 , 26(3) : 11 -16 . DOI: 10.3969/j.issn.1673-8926.2014.03.003
The third member of Shahejie Formaiton in Bozhong 25-1 oilfield is consisted of lithic arkose and feldspathic litharenite, with the current burial depth of 3 300~3 800 m, and the diagenetic evolution reached the middle diagenetic stage. During the diagenetic process, the reservoir physical properties were mainly changed by compaction, cementation and dissolution, and became medium porosity and low permeability reservoir. The reservoir properties were mainly controlled by sedimentary background and diagenetic evolution. Firstly, the gravity flow sedimentary background caused the less primary pores and plenty matrix; secondly, the intense compaction and cementation and weak dissolution caused the medium porosity and low permeability. The relatively high quality reservoir mainly developed in proximal deposited sand bodies, where the reservoir physical properties are high.
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