粤中地区下侏罗统金鸡组储层特征

doi:10.3969/j.issn.1673-8926.2009.01.013

Lithologic Reservoirs ›› 2009, Vol. 21 ›› Issue (1): 66-71.doi: 10.3969/j.issn.1673-8926.2009.01.013

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Reservoir characteristics of Jinji Formation of Lower Jurassic in central Guangdong

LIU Kai¹，XU Guoqiang^1，2，ZHANG Li³，LI Xiaogang¹，YI Hai³，ZUO Yinhui⁴

1. College of Energy Resources， Chengdu University of Technology， Chengdu 610059， China； 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation， Chengdu University of Technology， Chengdu 610059， China； 3. Guangzhou Marine Geological Survey Bureau， Guangzhou 510075， China； 4. State Key Laboratory of Petroleum Resource and Prospecting， China University of Petroleum， Beijing 102249， China

Online:2009-03-16 Published:2009-03-16

Abstract

Abstract:

Based on the field survey and sample testing for the outcrops of Mesozoic, in combination with the results of previous studies, the studies on petrology, pore structure and physical properties of Jinji Formation in central Guangdong are carried out. The result shows that the reservoir rocks are mainly composed of grey-white coarse-fine quartz sandstone and conglomerate-bearing sandstone; the reservoir space comprises cavity, fractures and intergranular porosity; the physical property is generally characterized bymoderate-lowporosity and lowpermeability, high displacement pressure, small pore throat radius, general sorting, mainly fine skewness and slightly coarse skewness，thus, the pore structures are poor. According to the parameters of physical properties of the reservoir and pore structure，the sandstone reservoirs of Jinji Formation are divided into three types, and the type Ⅲ and type Ⅳare the dominant ones.

Key words: volcanic rocks, seismic reflection characteristics, three-instantaneous information, constrained inversion of sonic logging

LIU Kai，XU Guoqiang，ZHANG Li，LI Xiaogang，YI Hai，ZUO Yinhui. Reservoir characteristics of Jinji Formation of Lower Jurassic in central Guangdong[J].Lithologic Reservoirs, 2009, 21(1): 66-71.

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