Carbonate reservoir permeability description method and device
A carbonate reservoir and permeability technology, which is applied in the fields of permeability/surface area analysis, measuring device, suspension and porous material analysis, etc. It can solve problems such as difficulty in obtaining parameters, difficulty in obtaining parameters, and complicated expression methods
Pending Publication Date: 2021-11-23
PETROCHINA CO LTD
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The BISQ model describes the macroscopic and microscopic seismic wavefields in a more precise manner, but the representation method is very complicated, and it is difficult to obtain some parameters, and there are still great difficulties in practical applications.
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[0078] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the following specific examples, but it should not be construed as limiting the scope of the present invention.
[0079] figure 1 The process flow diagram of the carbonate reservoir permeability description method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:
[0080] S1: Obtain digital core observation results of carbonate reservoir rock samples in several different regions, the digital core observation results include permeability, microporosity, shape factor, main scale, and compressional wave velocity;
[0081] S2: Regularize the main scale and shape factor according to the mean value of the main scale data and the mean value of the shape factor of carbonate reservoir...
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The invention provides a carbonate reservoir permeability description method and device. The method comprises the steps: obtaining digital core observation results of carbonate reservoir rock samples in different regions, wherein the digital core observation results comprise permeability, microporosity, shape factors, main scales and longitudinal wave velocities; regularizing the main scales and the shape factors according to the main scale data mean value and the shape factor mean value of the carbonate reservoir rock samples in different regions; performing rendezvous analysis on the main scales, the shape factors, the longitudinal wave velocities, the permeability and the microporosity after regularization processing to obtain a rendezvous graph; and establishing a carbonate reservoir permeability description model according to the rendezvous graph. The carbonate reservoir permeability description model provided by the invention provides a beneficial reference for further understanding the permeability of the carbonate reservoir and subsequent reservoir prediction research.
Description
technical field [0001] The invention relates to a carbonate reservoir permeability description method and device, belonging to the technical field of carbonate reservoir feature description in complex reservoir geophysical exploration. Background technique [0002] Absolute permeability refers to the permeability obtained when only a single fluid flows in the rock pores and has no physical and chemical interaction with the rock. It is a petrophysical parameter that characterizes the ease of fluid flow inside the rock (Sun Jianmeng, 2012) . [0003] With the increasingly serious deterioration of oil and gas reservoirs, carbonate reservoirs, as important remaining oil and gas resources, have been paid more and more attention. Permeability parameter is one of the key physical parameters of carbonate reservoirs. Compared with conventional sandstone reservoirs, the pore structure of carbonate rocks is more complex in shape and distribution characteristics, which reduces the rel...
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IPC IPC(8): G01N15/08
CPCG01N15/088Y02A10/40
Inventor 王恩利杨午阳闫国亮谢春辉何润杨庆鄢高韩赵万金张军舵
Owner PETROCHINA CO LTD