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Method and system for constructing microseismic effective fracturing stimulation volume model

A technology of volume reconstruction and construction method, which is applied in seismology, seismic signal processing, geophysical measurement, etc., and can solve problems such as deviation of volume calculation results and lack of fracturing volume model construction methods

Active Publication Date: 2021-09-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The fracturing volume estimation method of polyhedron approximation is more accurate when the event sphere is concentrated; but when the event sphere positioning results are scattered, the volume calculation result will have a large deviation
[0004] At present, when the positioning results of the event ball are relatively scattered, there is no more accurate method for constructing the volume model of fracturing stimulation

Method used

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  • Method and system for constructing microseismic effective fracturing stimulation volume model
  • Method and system for constructing microseismic effective fracturing stimulation volume model
  • Method and system for constructing microseismic effective fracturing stimulation volume model

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Embodiment Construction

[0022] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0023] figure 1 A flowchart showing the steps of the method for constructing a microseismic effective fracturing stimulation volume model according to the present invention.

[0024] In this embodiment, the method for constructing a microseismic effective fracturing stimulation volume model according to the present invention may include: step 101, determining the spatial range of the volume model, and obtaining a range model; step 102, performing grid division on the range model, and ...

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Abstract

A method and system for constructing a microseismic effective fracturing stimulation volume model are disclosed. The method may include: determining the spatial range of the volume model to obtain a range model; meshing the range model into multiple cube models; calculating the number of microseismic event spheres in each cube model as the density value of the cube model Constructing a fracturing stimulation volume model based on multiple cube models; calculating the sum of the volume values ​​of the density-weighted cube models according to the density value of each cube model, which is the volume value of the fracturing stimulation volume model. The present invention maps different chromatograms through the density value of the model to display, more intuitively reflects the distribution of fracturing event balls and the extension of fracturing cracks, and constructs an accurate fracturing crack model for later fracturing volume calculation and fracturing Effect evaluation provides an effective analysis method and provides technical support for unconventional oil and gas development.

Description

technical field [0001] The invention relates to the field of microseismic monitoring of unconventional oil and gas, and more specifically, to a method and system for constructing a microseismic effective fracturing volume model. Background technique [0002] Microseismic monitoring technology has become a commonly used monitoring technology in the development of oil and gas fields in tight reservoirs. Through the processing of detection signals, the changes of fractures during fracturing and oil and gas development are analyzed. According to the positioning results of microseismic event spheres, combined with In the growth and development process of fracturing fractures, an effective three-dimensional space numerical simulation algorithm is used to construct a fracturing fracture model, and then to estimate the volume of the fracture model and evaluate the fracturing effect in the later stage. [0003] How to construct a fracturing fracture model based on the event ball posi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
CPCG01V1/28G01V1/288
Inventor 汤东阳庞锐王海波赵德明
Owner CHINA PETROLEUM & CHEM CORP