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

Artificial fracture imaging method and system for physical simulation gas fracturing experiment

A technology of gas fracturing and artificial fractures, which is applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, measuring devices, etc., which can solve the problems of poor applicability of gas fracturing fluids, difficulty in finding coloring materials, and changing gas properties. , to avoid the interference of experimental results

Inactive Publication Date: 2019-09-17
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an artificial fracture imaging method for physically simulating gas fracturing experiments. The purpose is to solve the above problems. At present, there is no gas fracturing imaging method, which has poor applicability for gas fracturing fluid and is difficult to find in gas. Dissolved coloring materials, and the addition of coloring materials may change the properties of the gas. The flow rate of gas fracturing is fast, and the air flow itself will generate noise, which will adversely affect the accuracy of acoustic emission.

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
  • Artificial fracture imaging method and system for physical simulation gas fracturing experiment
  • Artificial fracture imaging method and system for physical simulation gas fracturing experiment
  • Artificial fracture imaging method and system for physical simulation gas fracturing experiment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Please refer to figure 1 , which shows a method flow chart of an artificial fracture imaging method for physically simulating gas fracturing experiments in the present invention, the artificial fracture imaging method for physically simulating gas fracturing experiments includes:

[0044] Step 1, sawing the rock sample after the gas fracturing experiment along the section of the rock sample with a wire saw;

[0045] Step 2, sealing the ductile writing thin layer with the rock sample section;

[0046] Step 3, use the side with the color block attached to paint evenly on the writing sheet.

[0047] In the above embodiment, the use of the wire saw can make the section of the rock sample smooth after sawing the rock sample, and can clearly distinguish the cracks on the section of the rock sample from other areas, and obtain the basis for the following copying steps, writing thin layers It has ductility, and can highlight the concave-convex features of the rock sample sect...

Embodiment 2

[0049] Further, in another embodiment of the artificial fracture imaging method of the present invention that simulates a gas fracturing experiment physically, in the step 2, the sealing of the writing thin layer and the rock sample section is specifically as follows:

[0050] A. Use copy paper to completely cover the section of the rock sample;

[0051] B. Gently tap the surface of the copy paper with a brown brush, and make raised marks on the raised part of the section of the rock sample on the copy paper.

[0052] In the above embodiment, in terms of the selection of raw materials for writing thin layers, the copy paper with ductility on the surface is used to record the rock samples. The rock sample is closely attached to the copy paper so that there is no gap between the two. Under this operation, after the copy paper is closely attached to the rock sample, the characteristics of the concave-convex area of ​​the rock sample are recorded by the copy paper through the conc...

Embodiment 3

[0054] Further, another embodiment of the artificial fracture imaging method of the present invention that physically simulates a gas fracturing experiment, in the step 3, using one surface attached to the color block to evenly paint on the writing thin layer is specifically:

[0055] Use the cross-section of a 2B-HB pencil or lead block to paint evenly on the thin writing layer from top to bottom.

[0056] In the above-mentioned embodiment, writing can be completed by using the cross section or lead block of the 2B-HB pencil in the prior art, and the effect of the cross section or lead block of the 2B-HB pencil is better.

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

No PUM Login to View More

Abstract

The invention provides an artificial fracture imaging method and system for a physical simulation gas fracturing experiment and belongs to the field of petroleum and natural gas exploration and development. The artificial fracture imaging method for the physical simulation gas fracturing experiment comprises the steps that 1, a rope saw is used to cut off a rock sample, obtained after the gas fracturing experiment, along a section of the rock sample; 2, a writing thin layer with ductility is tightly combined with the section of the rock sample; and 3, the surface, where a coloring block is attached, is used to uniformly color the writing thin layer. Through the artificial fracture imaging method and system, the problems that the rock sample obtained after the gas fracturing experiment cannot be directly transplanted, and dyeing of a rock sample fracture is performed by adding a coloring material in the prior art are solved, and a new artificial fracture imaging method is proposed; and through the method, no aqueous medium is added, a rock block and a fracture surface maintain a waterless dry state all the time, and experiment result disturbance caused by an aqueous medium is avoided.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas exploration and development, and in particular relates to an artificial fracture imaging method for physically simulating gas fracturing experiments. Background technique [0002] The large-scale physical simulation experiment method used to simulate the fracturing process of oil and gas fields has been developed rapidly in recent years, and the experiment usually adopts a volume of about 1m 3 Artificial or natural rocks are used as samples, artificial fractures are formed in the samples by simulating the fracturing process, and the characteristics of artificial fractures under different fracturing fluids and fracturing parameters are studied on the basis of imaging analysis of artificial fractures. [0003] Commonly used imaging methods include fracturing fluid coloring imaging and acoustic emission imaging. Fracturing fluid coloring imaging is to add soluble dyeing materials to the frac...

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
IPC IPC(8): G01N3/12G01N3/06
CPCG01N3/068G01N3/12G01N2203/0019G01N2203/0044G01N2203/0062G01N2203/0641
Inventor 苏伟东李勇宋振云郑维师周然蒋文学张承武武月荣段成才付海峰修乃岭梁天成严玉忠刘云志
Owner BC P INC CHINA NAT PETROLEUM CORP