Unlock instant, AI-driven research and patent intelligence for your innovation.

A three-dimensional flow model of matrix-fracture fluid and its preparation method and application

A three-dimensional flow and fluid flow technology, applied in the preparation of test samples, etc., can solve the problems of insufficient matrix utilization and large randomness of experimental conditions, and achieve the effect of wide application range and large randomness of experimental conditions.

Active Publication Date: 2022-04-01
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the invention, through the design of the shape and size of the model, the characteristic that the pressure gradient of most of the matrix in the fracture network core is equal is satisfied, so the fluid has both axial flow and radial flow in the model, thus realizing the model The three-dimensional flow in the system solves the problems of insufficient production of matrix by traditional methods and the randomness of experimental conditions. At the same time, it can be combined with various experimental instruments and has a wide range of applications, which is conducive to accurate evaluation of fracturing effects.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A three-dimensional flow model of matrix-fracture fluid and its preparation method and application
  • A three-dimensional flow model of matrix-fracture fluid and its preparation method and application
  • A three-dimensional flow model of matrix-fracture fluid and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] Embodiment 1 The making of a simple seam model

[0115] (1) choose the cylindrical sandstone core that length is 30mm, diameter is 25mm as model making material;

[0116] (2) According to the needs of the experiment, at one end of the core, cut out a crack on the end face equally, with a length of 20 mm and a width of 1 mm;

[0117] (3) At the other end of the core, two grooves are made along the direction perpendicular to the crack and passing the center of the end face. The groove is 20mm long, 2mm wide, and 2mm deep. The shortest distance between the groove and the crack 10mm.

[0118] figure 2 It is a schematic diagram of a simple seam model made in Example 1.

Embodiment 2

[0119] Example 2 Fabrication of Complex Seam Models

[0120] (1) Selecting a cylinder shale core with a length of 30mm and a diameter of 25mm as the model making material;

[0121] (2) According to the needs of the experiment, at one end of the core, two cracks were cut equally on the end face, with a length of 23.08 mm and a width of 1 mm;

[0122] (3) At the other end of the rock core, make 4 grooves along the direction of two adjacent crack angle bisectors, the grooves are 23.08mm long, 2mm wide, and 2mm deep, and each groove is connected to each crack The shortest distance is 6.92mm.

[0123] image 3 It is a schematic diagram of the complex seam model made in Example 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of conventional and unconventional oil and gas resources such as fractured oil and gas reservoirs, tight oil and gas, and shale oil and gas, and reservoir reconstruction, and discloses a matrix-fracture fluid three-dimensional flow model and its preparation method and application. The model is made of a core with a length of L, and the model contains n fractures and m grooves that are staggered along the axial and radial directions, and the fractures and the grooves are respectively located in the Both ends of the model, n and m are integers ≥ 1; the length of the crack and the length of the groove are equal to a, and the shortest distance from each groove to each crack is h, And h=L-a, h>0. This model can meet the pressure gradient of most of the matrix in the fracture network core to be equal, so the fluid has both axial flow and radial flow in the model, thus realizing the three-dimensional flow in the model.

Description

technical field [0001] The invention relates to the technical field of conventional and unconventional oil and gas resources such as fractured oil and gas reservoirs, tight oil and gas, and shale oil and gas, and reservoir reconstruction, and specifically relates to a matrix-fracture fluid three-dimensional flow model and its preparation method and application. Background technique [0002] Conventional oil and gas resources are relatively less difficult to exploit, but their resources only account for 20% of the total global resources, while unconventional oil and gas resources such as tight oil, tight gas, shale oil, and shale gas account for 80% of the total resources . In recent years, it has become more and more difficult to stabilize and increase production of conventional oil and gas resources in my country. At the same time, the newly-added proven reserves of unconventional oil and gas resources have repeatedly hit new highs, and the latter has gradually become the f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 孙永鹏魏利南戴彩丽李武广由庆吴一宁赵光李琳赵明伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)