Rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device

A technology of hydraulic fractures and experimental methods, which is applied in the directions of earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of difficult acquisition of effective acoustic signals and low positioning accuracy.

Active Publication Date: 2015-10-14
PETROCHINA CO LTD
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an acoustic emission diagnostic test method and device for rock sample hydraulic fracture m...

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
  • Rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device
  • Rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device
  • Rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] 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 making creative efforts belong to the protection scope of the present invention.

[0044] The embodiment of the present invention provides a rock sample hydraulic fracture form acoustic emission diagnosis test method, such as figure 1 and figure 2As shown, the described rock sample hydraulic fracture form acoustic emission diagnostic test method comprises:

[0045] S101: Optimizing the sensor array design for the three-dimensional rock sample space;

[0046] S102: Perform an active positioning test on the acoustic emission velocity field ...

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 discloses a rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device, wherein the rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method comprises the steps: a sensor array of a three-dimensional rock sample space is optimized to design, a rock sample emission speed filed is actively positioned and tested, and rock samples are done with a hydraulic fracturing physical simulation experiment, then are analyzed through sound wave arrival time recognition sound wave data, screen effective acoustic emission signals, and position acoustic emission event points in real time. Effective acoustic emission signals are analyzed through a focal mechanism and clusters, thereby obtaining extensional fracture and shear fracture spatial distribution regulations. The influence of geological stress conditions, natural fracture development degrees, net pressure construction and fluid viscosity to a hydraulic fracture extended mechanism is analyzed through many time experimental results of the hydraulic fracturing physical simulation experiment. The rock sample hydraulic fracture morphology acoustic emission diagnosis experimental method and device solves the difficult problems that effective signals in large size unconventional samples are difficult to collect and are low in positionaI accuracy.

Description

technical field [0001] The invention relates to a large-scale unconventional rock sample hydraulic fracture form acoustic emission diagnosis experiment technology, in particular to a rock sample hydraulic fracture form acoustic emission diagnosis test method and device. Background technique [0002] At present, with the large-scale development of unconventional oil and gas reservoirs such as shale gas and coalbed methane, it is necessary to conduct basic research on the mechanism of hydraulic fracture initiation and extension under complex stress conditions and geological conditions, so as to provide powerful technologies for field fracturing support and security. At present, since the actual shape of hydraulic fractures in the field cannot be directly observed, fracture information, such as fracture azimuth, length, height and scale, can only be obtained indirectly through geophysical testing methods such as well logging, micro-deformation and micro-seismic. Microseismic i...

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): E21B43/26E21B49/00
Inventor 付海峰梁天成刘云志修乃岭窦晶晶才博郑伟翁定为
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap