长岭气田登娄库组储层物性研究

doi:10.3969/j.issn.1673-8926.2010.04.011

Lithologic Reservoirs ›› 2010, Vol. 22 ›› Issue (4): 64-67.doi: 10.3969/j.issn.1673-8926.2010.04.011

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Reservoir property of Denglouku Formation in Changling Gasfield

LI Xiangfeng¹， ZHANG Chunsheng¹， XIAOMenghua²

1. Key Laboratory of Exploration Technologies for Oil and Gas Resources， Ministry of Education， Yangtze University， Jingzhou 434023， China； 2. Research Institute of Henan Oilfield Company， Sinopec， Nanyang 473132， China

Online:2010-12-15 Published:2010-12-15

Abstract

Abstract:

Based on core and cast section analysis, it is believed that Denglouku Formation in ChanglingGasfield is low porosity and lowpermeability reservoir. The rock type is mainly fine-grained feldspathic lithic sandstone, and the rock porosityranges from2.7% to6.6%. The reservoir space ismainly secondary pore, and the pore type ismainly intergranular dissolved pore. Rock texture, sedimentary environment and diagenesis are the main factors influencing the reservoir properties. The reservoir property of branch channel is relatively good, followed by the natural levee and crevasse splay, and it is the worst in the interchannel. The compaction, pressolution and cementation do great damage to the primary porosity of reservoir, while the dissolution is favorable for the forming of secondary pore and improve the reservoir property. The diagenesis in this area ismainly destructive to the reservoir property.

Key words: ultra-lowpermeability reservoirs, waterflooding efficiency, water injection multiple, heterogeneity, Ordos Basin

LI Xiangfeng， ZHANG Chunsheng， XIAOMenghua. Reservoir property of Denglouku Formation in Changling Gasfield[J].Lithologic Reservoirs, 2010, 22(4): 64-67.

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