Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A high-energy electric arc composite volume fracturing method for deep shale gas

A technology of volume fracturing and deep shale, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc. It can solve the problems of deep shale gas rock with strong plastic characteristics, insufficient fracture width and low static pressure in fractures, etc. problems, to achieve the effect of increasing the effective transformation volume, increasing the filling rate, and increasing the complexity

Active Publication Date: 2022-03-08
CHINA PETROLEUM & CHEM CORP +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems in the prior art of deep shale gas rocks with strong plastic characteristics, increased difficulty in fracture initiation and extension, low static pressure in fractures, insufficient fracture width, and low complexity, the present invention provides a deep shale gas High energy electric arc composite volume fracturing method for rock gas

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0063] Well X:

[0064] (1) Evaluation of key reservoir parameters

[0065] Well logging, mud logging and core test analysis are used to evaluate reservoir lithology, physical properties, rock mechanical parameters and in-situ stress, development of horizontal bedding fractures or texture fractures, development of natural fractures, temperature and pressure, etc.

[0066] (2) Perforation position determination and perforation operation

[0067] Considering the geological and engineering double sweet spot indicators comprehensively, determine the perforation position, and carry out conventional perforation operations.

[0068] (3) Optimization of fracture parameters and fracturing construction parameters

[0069] Using ECLIPSE to optimize the fracture parameters, based on the optimized fracture parameters, using MEYER to optimize the combination of fracturing construction parameters and fracturing material performance parameters under the above-mentioned optimized fracture pa...

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 high-energy electric arc composite volume fracturing method for deep shale gas. Including: (1) evaluation of key reservoir parameters (2) determination of perforation location and perforation operation (3) optimization of fracture parameters and fracturing construction parameters (4) acid pretreatment operation (5) small-scale test fracturing (6) variable Alternate injection of viscous liquid (7) Lowering the high-energy arc fracturing tool for multi-wave high-energy arc discharge and charging operations (8) Lifting the high-energy arc fracturing tool and injecting the remaining fracturing fluid and proppant ( 9) Replacement operation (10) Lower the bridge plug and perforation joint operation tool, repeat steps (4) and (6) to (9) to carry out the fracturing operation in the lower section. The invention improves the complexity of volume fracturing fractures of deep shale gas, increases the filling rate of full-scale fracture systems, increases the effective volume of deep shale gas stimulation, and improves the effects of post-fracture stimulation and production stabilization.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, and more particularly relates to a high-energy electric arc composite volume fracturing method for deep shale gas. Background technique [0002] At present, the exploration and development of shale gas is gradually moving towards deep layers. For example, in key areas such as the southeast of Fuling, Dingshan, Yongchuan, Weiyuan, and Nanchuan, the burial depth of shale gas reaches 3500m or even more than 4500m. The exploration of deep shale gas The potential is huge. According to preliminary calculations, China's deep resources in the Sichuan Basin amount to more than 1 trillion cubic meters. At present, commercial development has only been achieved in shale gas with a buried depth of less than 4100m in foreign countries. Deep shale gas fracturing with a buried depth greater than 4100m also has difficulties in adding sand or even early sand plugging, and the effect after fracturi...

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): E21B43/26
Inventor 蒋廷学侯磊周健刘红磊李洪春卞晓冰苏瑗肖博
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com