Sandy conglomerate oil deposit fracturing crack control design method

A design method and technology of glutenite, applied in computing, special data processing applications, instruments, etc., can solve problems such as inadequate crack control measures and unclear research on artificial cracks

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

At present, there are still problems that the research on artificial cracks is not clear and the crack control measures are not in place

Method used

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  • Sandy conglomerate oil deposit fracturing crack control design method
  • Sandy conglomerate oil deposit fracturing crack control design method
  • Sandy conglomerate oil deposit fracturing crack control design method

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0043] The present invention provides a control method for fracturing fractures in glutenite reservoirs, which establishes a glutenite reservoir model and a numerical model of fracture propagation, analyzes the content and distribution of gravel, establishes a description method for rock heterogeneity, and simulates and simulates artificial fractures. Calculation, in the case of different gravel content and distribution, by controlling the main parameters affecting the extension of fractures, a single fracture is formed near the wellbore and multiple fractures are formed far from the wellbore. At the same time, a reasonable fracture height is controlled to increase the controlled reserves of a single well and improve The purpose of the fracturing effect.

[0044] The invention establishes a reservoir numerical simulation model, a conglomerate reservoir fracture expans...

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Abstract

The invention provides a sandy conglomerate oil deposit fracturing crack control design method, and belongs to the field of oil exploration. The method comprises the steps that 1, a sandy conglomerate oil deposit numerical model is built, then, sandy conglomerate oil deposit parameters and sandy conglomerate fracturing technological parameters are analyzed, and a sandy conglomerate multi-factor capacity model is built; 2, a sandy conglomerate oil deposit crack propagation model is built, wherein block physical property distribution rules are analyzed, statistical distribution rules are combined, and crack propagation morphological description is performed; 3, crack propagation simulation calculation is performed, and crack geometric parameters including crack length, crack height and crack width are obtained; 4, a sandy conglomerate crack control method is determined; 5, a calculation result obtained in the step 3 and the simulation result of the model in the step 1 are subjected to contrastive analysis, crack geometric parameters with the maximum yield in the sandy conglomerate multi-factor yield model in the step 1 are found, and crack design is completed.

Description

technical field [0001] The invention belongs to the field of petroleum development, and in particular relates to a control design method for fracturing cracks in sandy conglomerate reservoirs. Background technique [0002] At present, two patents closely related to the design method of fracturing fracture control in glutenite reservoirs are as follows: [0003] The CN101839124A invention relates to a method for controlling the extension of fracturing fractures in oil and gas field reservoirs. During the fracturing construction process, the method uses the fracturing fluid base fluid to carry modified ceramsite and curing agent. React for 40-90 minutes to form a high-strength, non-permeable barrier; the reaction time is controllable and can be used in reservoirs at 45-90°C. It is stable and consolidated in the cracks to form a non-permeable barrier with high bearing strength, which can not only slow down the excessive downward extension of cracks into the water layer, but al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 封卫强王宝峰周林波刘世华孙海成曲海吴春方刘建坤李奎为李洪春
Owner CHINA PETROLEUM & CHEM CORP
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