Evaluation method and equipment for single-stage fracture liquid production contribution rate based on net pressure fitting

An evaluation method and technology of net pressure, applied in the fields of earthwork drilling, design optimization/simulation, computer-aided design, etc., can solve the problems of large parameter error, deviation of real-time data from reality, difficult operation technology, etc., and achieve the effect of low cost

Active Publication Date: 2022-05-24
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] However, the inventors have found that the prior art has at least the following technical problems: In the direct method, the actual operation technology is difficult and the implementation cost is high; The error of the parameter is larger, which leads to an inaccurate assessment of the contribution of fracture fluid production

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  • Evaluation method and equipment for single-stage fracture liquid production contribution rate based on net pressure fitting
  • Evaluation method and equipment for single-stage fracture liquid production contribution rate based on net pressure fitting
  • Evaluation method and equipment for single-stage fracture liquid production contribution rate based on net pressure fitting

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[0044] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] figure 1 The structure diagram of the single-stage fracture fluid production contribution rate evaluation system based on net pressure fitting provided for the embodiment of the present invention.

[0046] like figure 1 As shown, the system provided in this embodiment includes a terminal 101 or a server 102 . The terminal ...

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Abstract

The embodiment of the present invention provides a single-stage fracture liquid production contribution rate evaluation method and equipment based on net pressure fitting. The method includes: obtaining the net pressure of the target single-stage fracture at the bottom of the well; The simulated net pressure of the fracture opening of the target well is fitted by adjusting the preset parameters so that the net pressure of the simulated fracture opening is fitted with the net pressure of the fracture opening of the target single-stage fracture; in the preset software, according to the fitted Simulating the net pressure of the fracture opening to determine the fracture half-length of the target single-stage fracture; determining the equivalent well diameter corresponding to the target single-stage fracture according to the fracture half-length of the target single-stage fracture; Determine the liquid production rate of the target single-stage fracture according to the corresponding equivalent well diameter; determine the contribution rate of the target single-stage fracture according to the liquid production rate of the target single-stage fracture and the total liquid production rate of the wellhead, which can accurately Evaluate the liquid production contribution rate of a single fracture, and the cost is low.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of oil and gas field development, and in particular, to a method and equipment for evaluating the contribution rate of single-stage fracture fluid production based on net pressure fitting. Background technique [0002] With the continuous application and technological progress of hydraulic fracturing technology in oilfield development, how to better evaluate the construction effect of hydraulic fracturing has become an important part of hydraulic fracturing verification. Among them, evaluating the fluid production contribution of single-stage fractures under multiple fractures has gradually become an important indicator for evaluating the construction effect of hydraulic fracturing. [0003] At present, the existing methods to study the contribution rate of fracture fluid production mainly include direct method and indirect method. In the direct method, by directly measuring the to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B47/06G06F30/20G06F119/14G06F113/08
CPCE21B49/00E21B47/06
Inventor 王飞陈巧韵庄野张士诚
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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