Carbonate reservoir seismic wave response characteristic analysis method

A carbonate rock reservoir and response feature technology, applied in the field of oil and gas exploration engineering, can solve the problems of mismatching resolution and seismic resolution, affecting the accuracy of reservoir calibration, and achieve fine analysis and seismic resolution. Match, improve the effect of accuracy

Active Publication Date: 2017-03-22
PETROCHINA CO LTD
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Problems solved by technology

[0006] In order to solve the problem that the accuracy of reservoir calibration is affected by the mismatch between drilling and logging resolution and seismic resolution, and to analyze the influence of reservoirs on seismic reflection waves, the present invention provides a method for analyzing seismic wave response characteristics of carbonate reservoirs

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  • Carbonate reservoir seismic wave response characteristic analysis method
  • Carbonate reservoir seismic wave response characteristic analysis method
  • Carbonate reservoir seismic wave response characteristic analysis method

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[0049] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] An embodiment of the present invention provides a method for analyzing the seismic wave response characteristics of carbonate rock reservoirs, such as figure 1 As shown, the method flow is as follows:

[0051] Step 101: Obtain the acoustic velocity of the formation where the carbonate reservoir is located and the overlying formation in the logging data;

[0052] Specifically, the speed of sound waves refers to longitudinal waves. In this example, taking the Gaoshiti area in the middle of Sichuan Basin as an example, the depth range of the carbonate reservoir and the overlying strata in the research well is 4848.1-5125.7m, and the carbonate reservoir in the well logging data is obtained layer sound velocity.

[0053] Further, according to the co...

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Abstract

The present invention discloses a carbonate reservoir seismic wave response characteristic analysis method, belonging to the oil-gas exploration engineering field. The method comprises: the stratum where the carbonate reservoir is located and the overlying strata are subjected to macroscopic layer division on a logging curve, the synthetic seismic record of the carbonate reservoir is obtained to perform the reservoir position calibration; the primary rock acoustic velocity and the density are employed to replace the acoustic velocity and the density of the carbonate reservoir in the macroscopic layer data, the synthetic seismic record without the carbonate reservoir is obtained, and the reservoir reflection distortion index is obtained. The carbonate reservoir seismic wave response characteristic analysis method is provided to realize the matching of the logging resolution and the seismic resolution so as to improve the carbonate reservoir seismic calibration accuracy; and moreover, through calculation of the reservoir reflection distortion index, the contribution effect of the upper and lower surrounding rocks and the reservoir on the well-side recording channel so as to realize the fine analysis for the carbonate reservoir seismic reflection wave response characteristics.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration engineering, in particular to a method for analyzing the seismic wave response characteristics of carbonate rock reservoirs. Background technique [0002] According to statistics, the global carbonate reservoir reserves account for 47% of the total reserves, and it is one of the important reservoir types for oil and gas exploration in current oil and gas exploration. The analysis of seismic wave response characteristics of carbonate reservoirs is the basic work of carbonate reservoir research, which lays the foundation for reservoir modeling, inversion, prediction and other work, and is a key part of reservoir research work. [0003] At present, the analysis of seismic wave response characteristics of carbonate reservoirs is usually carried out from the following two aspects: reservoir well seismic calibration and reservoir seismic response analysis. For reservoir well seismic calibration, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/30G01V2210/60
Inventor 吴仕虎肖富森冉崎梁瀚关旭丁孔芸
Owner PETROCHINA CO LTD
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