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Well type design method and device based on compressibility of fractured geologic body

A design method and technology of geological bodies, applied in the field of geological exploration to maximize the output

Active Publication Date: 2013-11-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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However, the productivity optimization obtained by this method is restricted

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  • Well type design method and device based on compressibility of fractured geologic body
  • Well type design method and device based on compressibility of fractured geologic body
  • Well type design method and device based on compressibility of fractured geologic body

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Embodiment 1

[0047] Such as figure 1 As shown, it is a flow chart of a well design method based on the frackability of the fracturing geological body of the present invention, including the following steps:

[0048] Step 101, according to the seismic data, logging data and key well preprocessing results, obtain the compressibility parameters of the fracturing geological body; the compressibility parameters include: rock brittleness, in-situ stress, elastic characteristics, fracture toughness , natural fracture density and natural fracture occurrence;

[0049] The above compressibility parameters are described in detail below:

[0050] Among them, the rock brittleness refers to the ease of fracturing of a compressible geological body, that is, the higher the brittleness, the more complex the fracture network formed by fracturing, and the higher the compressibility.

[0051] In-situ stress is the magnitude and direction value of three-dimensional in-situ stress, including one vertical prin...

Embodiment 2

[0083] Such as figure 2 Shown is a structural diagram of a well design device based on the frackability of the fracturing geological body of the present invention, including:

[0084] The compressibility parameter acquisition unit 201 is used to obtain the compressibility parameters of the fractured geological body according to the seismic data, logging data and key well preprocessing results; the compressibility parameters include: rock brittleness, geological Stress, elastic characteristics, fracture toughness, natural fracture density and natural fracture occurrence;

[0085] The above compressibility parameters are described in detail below:

[0086] Among them, the rock brittleness refers to the ease of fracturing of a compressible geological body, that is, the higher the brittleness, the more complex the fracture network formed by fracturing, and the higher the compressibility.

[0087] In-situ stress is the magnitude and direction value of three-dimensional in-situ s...

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Abstract

The invention provides a well type design method and device based on compressibility of a fractured geologic body. According to the method, the compressibility value of each testing point is calculated according to seismic data, logging information and key well preprocessing results, a three-dimensional distribution model of a compressible geologic body is constructed according to the compressibility value of each testing point, and well types for efficiently communicating these beneficial areas are designed according to the model, so that the yield is maximized.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a well type design method and device based on the fracability of fracturing geological bodies. Background technique [0002] Unconventional oil and gas reservoirs such as shale gas, coalbed methane, and tight gas are widely distributed in my country and have large prospective reserves. Efficient development of such oil and gas reservoirs has been the focus of long-term attention in the petroleum field. Unconventional oil and gas reservoirs are characterized by low porosity and low permeability. Efficient development of such unconventional oil and gas reservoirs requires large-scale fracturing operations, aiming to form multiple or even network fractures in the reservoir, thereby improving the conditions for oil and gas migration. [0003] Reservoir fracability refers to the property that reservoir rock mass has the ability to be effectively fractured to stimulate p...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 金衍程万陈勉侯冰卢运虎徐彤
Owner CHINA UNIV OF PETROLEUM (BEIJING)