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Coal-bed gas well multi-coal seam combined drainage and mining technique evaluation method

A technology for coalbed methane wells and evaluation methods, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as insufficient production capacity of coalbed methane development.

Inactive Publication Date: 2016-07-20
HENAN POLYTECHNIC UNIV +1
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Problems solved by technology

[0004] In order to overcome the problem of insufficient production capacity of coalbed methane development in existing multi-coal seam areas, the present invention provides an evaluation method for judging whether coal reservoirs are suitable for coal seam drainage

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  • Coal-bed gas well multi-coal seam combined drainage and mining technique evaluation method
  • Coal-bed gas well multi-coal seam combined drainage and mining technique evaluation method
  • Coal-bed gas well multi-coal seam combined drainage and mining technique evaluation method

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Embodiment Construction

[0028] An evaluation method for coalbed gas well multi-coal seam joint drainage technology, based on the analysis of previous drilling, well logging, well testing and fracturing technology data, sequentially through single factor, multi-factor weight analysis judgment and comprehensive evaluation to judge the feasibility of combined bed drainage .

[0029] Further, the method contains the following steps:

[0030] Step 1: According to the analysis of drilling, well testing, logging and fracturing data of the target coal seam in the target area, determine the main reservoir parameters that affect the combined drainage and production, and conduct a single factor analysis of the impact of combined drainage on each reservoir parameter degree.

[0031] Step 2: According to the degree of influence of each reservoir parameter on productivity, it is compared and weighted.

[0032] Step 3: By setting the parameters of the matching degree of joint mining, comprehensively analyze wheth...

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Abstract

The invention discloses a coal-bed gas well multi-coal seam combined drainage and mining technique evaluation method and belongs to the technical field of coal-bed gas exploitation. According to coal-bed gas geological exploration data and historical data, the method carries out comparison and analysis on reservoir parameters among a plurality of coal seams in a multi-coal seam region and combined-layer drainage and mining adaptation evaluation. Under an evaluation system above, the method comprises reservoir parameter single factor analysis, parameter weight assignment and final multi-parameter comprehensive assessment, and finally, realizes the purpose of judging whether target coal seams are suitable for combined-layer drainage and mining.

Description

technical field [0001] The invention relates to an evaluation method of multi-coal seam combined drainage technology for coalbed gas wells, and belongs to the technical field of coalbed gas exploration and development. Background technique [0002] At present, the development of coalbed methane in my country is mainly based on single-layer fracturing and single-layer drainage. In my country, under the geological conditions of low permeability, low saturation and low reservoir pressure, the investment cost of well construction for single-layer drainage is huge, but the corresponding economic benefits may not be able to meet expectations. Therefore, the maximum increase in production The economic recovery rate is the basis for the transformation of coalbed methane development from scientific research to industrial production. This puts forward higher requirements for the exploration and development technology of coalbed methane. [0003] Combined seam drainage is to use the s...

Claims

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Application Information

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IPC IPC(8): G06Q50/02G06F17/50
CPCG06Q50/02G06F30/13
Inventor 曹运兴马兵杨雪松石玢何茂田林鱼永云田吉星王建涛路遥
Owner HENAN POLYTECHNIC UNIV
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