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Shale gas reservoir exploiting property analysis method and device

An analysis method and technology of an analysis device, which are applied in complex mathematical operations, instruments, data processing applications, etc., can solve problems such as lack of mining analysis methods, and achieve the effect of high accuracy

Pending Publication Date: 2021-09-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the recoverability analysis methods of shale gas reservoirs analyze whether the shale gas reservoirs are recoverable, or called availability, and the strength of the recoverability or the test output of shale gas wells, but currently there is no effective Extractive analysis method

Method used

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  • Shale gas reservoir exploiting property analysis method and device
  • Shale gas reservoir exploiting property analysis method and device
  • Shale gas reservoir exploiting property analysis method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Figure 5 It is the recovery analysis result of each layer of the shale gas reservoir Zu 201 horizontal well in Yuxi District. When calculating the production comprehensive index, 7 recovery analysis parameter values ​​are obtained. The well includes Wufeng Formation, Longyi 1 Longyi 1 and Longyi 2 submembers are three strata in total, of which Longyi 1 submember is further divided into Longyi 11, Longyi 12, Longyi 13 and Longyi 14. The comprehensive index is the highest, superior to other sublayers. According to Table 2, it is the first main mining layer, among the two sublayers of Longyi 12 and Longyi 13.

Embodiment 2

[0100] Figure 6 It is a schematic diagram of the distribution of the production comprehensive index and the test production output of multiple horizontal wells in the embodiment of the present invention, Figure 6 Aiming at multiple horizontal wells in the Wei 204 platform, the distribution diagram of the production comprehensive index and test production output of multiple horizontal wells, Figure 6 The middle bottom map is the contour distribution map of the mining comprehensive index. The dark color is good, and the light color is bad. The size of the bubble indicates the test production of the horizontal well corresponding to the bubble. The bigger the bubble, the better the test production. The higher the output, the smaller the bubble, and the smaller the test mining output. As can be seen from the figure, the coincidence rate between the size of the mining comprehensive index of the present invention and the size of the test mining output exceeds 80%. Therefore, the e...

Embodiment 3

[0102] Figure 7 It is a schematic diagram of the production comprehensive index of multiple formations of multiple horizontal wells in the embodiment of the present invention, Figure 7 Among them, there are 7 horizontal wells including Zi 204, Zu 202, Zu 201, Xuan 201, Wei 204H10-2, Ningxi 202 and Ning 203, including Longyi 2, Longyi 14, Longyi 13, Longyi 12, Longyi There are 6 strata in the Yi 11 and Wufeng formations. According to Table 2, the mining performance of each horizontal well and the comprehensive index of each stratum can be analyzed. For example, the Longyi 11 strata of the horizontal well Ning 203 can be used as the first main production stratum , while Longyi 2 of the horizontal well Ningxi 202 has no mining value for the time being.

[0103] To sum up, in the method proposed in the embodiment of the present invention, a plurality of recoverability analysis parameter values ​​of wells to be analyzed in the target shale gas reservoir are obtained, and the rec...

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Abstract

The invention provides a shale gas reservoir exploiting property analysis method and device. The method comprises the steps of obtaining multiple exploiting property analysis parameter values of a well to be analyzed of a target shale gas reservoir, wherein exploiting property analysis parameters comprise reservoir physical property parameters, reserve parameters and seepage capacity parameters; based on the statistical data of the exploiting property analysis parameters of the target shale gas reservoir, determining a classification threshold value of the exploiting property analysis parameters of the target shale gas reservoir; according to the multiple mining performance analysis parameter values of the to-be-analyzed well and the classification threshold value of the mining performance analysis parameters, obtaining the mining comprehensive index of the to-be-analyzed well; and according to the mining comprehensive index of the to-be-analyzed well and a preset mining threshold value, analyzing the mining performance of the to-be-analyzed well. According to the invention, the exploitability and the exploitability strength of the shale gas reservoir can be analyzed, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of analysis of shale gas reservoirs, in particular to a method and device for analyzing the recoverability of shale gas reservoirs. Background technique [0002] At present, the recoverability analysis methods of shale gas reservoirs analyze whether the shale gas reservoirs are recoverable, or called availability, and the strength of the recoverability or the test output of shale gas wells, but currently there is no effective Mineral Analysis Methods. Contents of the invention [0003] The embodiment of the present invention proposes a method for analyzing the recoverability of shale gas reservoirs, which is used to analyze the recoverability of shale gas reservoirs, as well as the strength of recoverability and high accuracy. The method includes: [0004] Obtaining a plurality of recoverability analysis parameter values ​​of wells to be analyzed in the target shale gas reservoir, where the recoverability...

Claims

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Application Information

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IPC IPC(8): G06F17/18G06Q10/04G06Q50/02
CPCG06F17/18G06Q10/04G06Q50/02Y02A10/40
Inventor 沈瑞胡志明杨航李武广李海波端祥刚郭和坤周洪涛
Owner PETROCHINA CO LTD