马达班湾盆地某区块上新统砂岩成岩作用对储层的影响
网络出版日期: 2014-10-20
基金资助
国家科技重大专项“西非及亚太地区被动大陆边缘盆地油气勘探开发一体化技术”(编号:2008ZX05000)资助
Diagenesis and its influence on reservoirs of Pliocene in a block of Moattama Bay Basin
Online published: 2014-10-20
袁淋 , 李晓平 , 张璐 , 刘斌 , 王文斌 . 马达班湾盆地某区块上新统砂岩成岩作用对储层的影响[J]. 岩性油气藏, 2014 , 26(5) : 47 -50 . DOI: 10.3969/j.issn.1673-8926.2014.05.009
The Moattama Bay Basin is located in the back-arc strike slip and extensional tectonic position with oil and gas enrichment, seeking favorable reservoirs become the key for the breakthrough of petroleum exploration in this area. By using techniques of casting thin section and X-diffraction, this paper analyzed mineral characteristics and diagenesis of Pliocene sandstone reservoirs in a block of Moattama Bay Basin. It is believed that the rock types of sandstone reservoir are mainly feldspar quartz sandstone and lithic quartz sandstone, with moderate maturity mostly. As a whole, the study area experienced diagenesis of compaction, cementation and dissolution, which influenced reservoir properties little. In the south of the study area, compaction is a main factor influences the reservoir properties dominantly. Destructive diagenesis has little effect on the porosity loss, so Pliocene formations possess advantages of forming hydrocarbonbearing reservoirs in this area.
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