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Method for obtaining crack height by using fracturing construction pump stop pressure data

A technology of crack height and pump pressure, used in electrical digital data processing, earthwork drilling, complex mathematical operations, etc.

Pending Publication Date: 2020-11-24
HEFEI SUCCESS SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for obtaining the crack height by using the pump stop pressure data of fracturing construction, and solve the existing problems

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  • Method for obtaining crack height by using fracturing construction pump stop pressure data
  • Method for obtaining crack height by using fracturing construction pump stop pressure data
  • Method for obtaining crack height by using fracturing construction pump stop pressure data

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Embodiment Construction

[0118] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0119] see Figure 1-8 As shown, the present invention is a method for obtaining the fracture height by using the pump stop pressure data of fracturing construction, comprising the following steps:

[0120] Step 1: According to the amount of fracturing fluid injected during fracturing construction, establish a seepage model of fracturing fluid in the formation;

[0121] Step 2: According to the seepage model, obtain the bottomhole pressure solution after the pump ...

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Abstract

The invention discloses a method for obtaining the fracture height through fracturing construction pump stopping pressure data, and relates to the technical field of oil reservoir engineering. The method comprises the steps that a seepage model of fracturing fluid in a stratum is established according to the amount of the fracturing fluid injected in the fracturing construction period; according to the seepage model, a well bottom pressure solution after pump stopping is obtained, and a pump stopping pressure fitting plate is generated; fitting the pump stopping pressure fitting chart with actually measured fracturing pump stopping pressure data to obtain oil reservoir parameters such as the fracture half-length and the permeability of a fracturing area; and combining the liquid state equation and the Darcy law, and calculating the fracture height by using the fracture half-length obtained by fitting and the permeability parameter of the fracturing area. Technical support is provided for development of compact oil gas, shale gas and coalbed methane of an oil field; the method has the advantages that the cost is low, the interpretation result after fitting can directly give parameters such as fracture half-length and permeability, and the single-well productivity can be directly calculated.

Description

technical field [0001] The invention belongs to the technical field of oil reservoir engineering, and in particular relates to a method for obtaining fracture height by using pump stop pressure data in fracturing construction. Background technique [0002] Hydraulic fracturing has become an important measure for the development of oil and gas fields, especially after the shale gas revolution in the United States, large-scale volume fracturing has become an indispensable reservoir stimulation measure for unconventional oil and gas development such as shale oil and gas and tight oil and gas. Since large-scale fracturing requires tens of thousands of cubic meters of fluid and thousands of tons of sand, the fracturing cost of each well is tens of millions or even as high as 100 million yuan. Evaluation of the fracturing effect can obtain the fracture height, which is helpful for formulating oil and gas development systems , to realize the efficient and economical development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/13G06F30/20E21B43/26G06F119/14
CPCG06F17/13E21B43/26
Inventor 卢志炜
Owner HEFEI SUCCESS SCI & TECH
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