Characteristics of reservoir and pore fluid sensitivity parameters based on rock physical experiment: a case study of the middle-deep clastic rock reservoirs in the eastern Pearl River Mouth Basin

被引：0
|
作者：
Liu J. [1 ]
Liu J. [1 ]
Cao J. [2 ]
Wen X. [2 ]
Xu L. [1 ]
Chen R. [1 ]
Chen Z. [1 ]
机构：
[1] CNOOC Deepwater Development Limited, Shenzhen, 518067, Guangdong
[2] State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, Sichuan
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2019年 / 40卷
关键词：
Clastic rock; Elastic parameters; Fluid identification factor; Oil and gas identification; Pearl River Mouth Basin; Rock physical experiment;
D O I：
10.7623/syxb2019S1017
中图分类号：
学科分类号：
摘要：
The rock physical experiment is an important means to study the reservoir seismic response characteristics. The rock physical parameters obtained through experiments of the sandstone samples with different types and pore fluid can provide an experimental basis for calculating the sensitivity parameters of high-quality reservoir and hydrocarbon fluid. As required by oil and gas exploration in mid-deep clastic reservoirs of the Pearl River Mouth Basin, this study selects the clastic reservoir samples of 13 wells from Huizhou sag, Lufeng sag and Xijiang main subsag of the Zhu-1 depression as well as Baiyun main subsag, Baiyun east subsag and Panyu low uplift of the Zhu-2 depression to carry out the tests of rock physical parameters. Based on the tests and analysis of different lithologies, physical properties and pore fluid saturation under the formation pressure, the reservoir physical properties, rock physical parameter characteristics and the seismic response characteristics of rock samples with different pore fluid saturation were obtained. The test results show that the rock samples are characterized by high porosity-medium permeability, medium porosity-medium low permeability, low porosity-low permeability and ultra-low porosity-low permeability, showing quite different physical properties. The petrophysical parameters have a high degree of correlation with porosity, permeability and density, including the rock P/S wave velocity, Young's modulus, shear modulus, bulk modulus, Lame constant and so on. With the increase of water saturation in rock samples, the Lame constant, bulk modulus, Poisson's ratio, P-wave impedance, P-wave velocity and P/S wave velocity ratio are increased accordingly with a large amplitude, indicating a certain degree of sensitivity to the changes of water/gas and water/oil saturation; the rock S-wave velocity, S-wave impedance and shear modulus change little, showing the weak sensitivity to the changes of water/gas and water/oil saturation. ρf, λρ, λρ•μρ, σ, Zp-Zs and other fluid identification factors present very strong gas and water identification ability, and also certain oil and water identification ability. The combination of different fluid identification factors can achieve good effects during gas, water and oil identification. The effect of identification on the pore fluid of marine reservoir is significantly superior to that on the continental reservoir. © 2019, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：197 / 205
页数：8
相关论文
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