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A design method of fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs

A technology for staged fracturing and tight oil reservoirs, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve the problems of low fracturing design efficiency, high application difficulty, lack of block and universal applicability of similar reservoirs and other issues to achieve the effect of improving design efficiency

Active Publication Date: 2021-06-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] However, most of the existing staged fracturing fracture parameter design methods are optimized for specific horizontal wells to be fractured, lacking the universality of blocks or even similar reservoirs, and most of them need to be solved by complex mathematical models. , it is difficult to apply for ordinary designers on site, and the efficiency of fracturing design is low

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  • A design method of fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs
  • A design method of fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs
  • A design method of fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs

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Embodiment 1

[0042] This embodiment discloses a method for designing fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs, including:

[0043]S100. Obtain geological development data of the tight oil reservoir, and establish a numerical simulation model for staged fracturing horizontal well development based on the geological development data of the tight oil reservoir.

[0044] Specifically, geological development data include reservoir structure parameters, reservoir physical properties parameters and fluid physical properties parameters of the target block; structural parameters include top structure, burial depth, interlayer and fault distribution data; reservoir physical property parameters include formation pressure, formation temperature , sand body thickness, effective thickness, permeability, porosity, oil saturation distribution data and rock compressibility coefficient; fluid physical parameters include crude oil viscosity, crude oil density, crud...

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Abstract

A method for designing fracture parameters for staged fracturing of horizontal wells in tight oil reservoirs, comprising: obtaining geological development data of tight oil reservoirs, establishing a numerical simulation model for staged fracturing horizontal well development based on the geological development data of tight oil reservoirs; changing the development value of horizontal wells Simulate the parameter combination value of fracture spacing and fracture conductivity in the model, calculate the effective production time and effective cumulative oil production under the current parameter combination value; establish the daily average oil production capacity and pressure According to the design value of daily average oil production capacity of staged fractured horizontal wells in tight oil reservoirs, the combination value of fracture spacing and fracture conductivity parameters of staged fractured horizontal wells is determined. The invention can quickly and accurately determine the combination scheme of fracture spacing and fracture conductivity matching the design value of the daily average oil production capacity of the staged fracturing horizontal wells in tight oil reservoirs, which is beneficial to improve the staged fracturing design of the horizontal wells in tight oil reservoirs efficiency.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a method for designing fracture parameters of staged fracturing of horizontal wells in tight oil reservoirs. Background technique [0002] my country is rich in tight oil reservoir resources, which are widely distributed in the Songliao, Ordos, and Sichuan Basins. It is generally believed that the most effective way to develop tight oil is multi-stage fracturing stimulation of horizontal wells, and to ensure the effect of fracturing stimulation, it is necessary to provide a complete fracturing construction design plan before on-site construction. Among many design parameters, the selection of fracture spacing and fracture conductivity has an important impact on the stimulation effect of horizontal well staged fracturing design and post-fracture production efficiency. [0003] In the prior art, the invention patent with the application number 201410168072.7 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/28E21B43/26G06F111/10G06F119/14G06F113/08
CPCE21B43/26G06F30/20G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 张先敏冯其红任佳伟张纪远谢泽豪
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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