惠民凹陷沙河街组基山三角洲中孔低渗储层成岩作用和有利储层成因
网络出版日期: 2013-09-26
基金资助
国家科技部油气重大专项“岩性地层油气藏沉积体系、储层形成机理与分布研究”子专题(编号:2011ZX05001-002-03)和“海洋深水区油气勘探关键技术”子专题(编号:2011ZX05025-005-02)联合资助。
Diagenesis of medium porosity and low permeability reservoir and genesis of favorable reservoir of Jishan delta of Shahejie Formation in Huimin Depression
Online published: 2013-09-26
赵天林 , 罗静兰 , 邓媛 , 李杪 , 白雪晶 , 郭涛 . 惠民凹陷沙河街组基山三角洲中孔低渗储层成岩作用和有利储层成因[J]. 岩性油气藏, 2013 , 25(5) : 1 -7 . DOI: 10.3969/j.issn.1673-8926.2013.05.001
The sand bodies of Jishan delta of Shahejie Formation in Huimin Depression are consisted of feldspathic sandstone and lithic sandstone, mainly experienced compaction, cementation, dissolution and metasomatismin the burial diagenetic evolution, and the diagenetic evolution reached the middle diagenetic stage, which results in the mediumporosity and lowpermeability reservoir(current burial depth 1 700~3 500 m). The dissolution played a significant role in improving
reservoir properties in the burial diagenetic evolution. The intergranular pores and intragranular pores, caused by the feldspar dissolution in the depth of 2 400~2 600 m, are constructive for the reservoir properties in increasing the porosity and permeability(the porosity up to 25% and the permeability up to 50 mD). Obviously, the zone where the dissolution and the secondary pores developed is very important for predicting favorable reservoir.
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