歧口凹陷歧南斜坡深部储层特征及综合评价
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
Online published: 2013-11-26
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
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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