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

Evaluation method for ability of drilling fluid to consolidate well wall broken surrounding rock

A technology for breaking surrounding rocks and evaluation methods, which is applied in wellbore/well parts, earthwork drilling and production, etc., can solve the problems of inaccurate evaluation results of drilling fluid stability and well wall performance, and achieve reliable mechanical parameters and efficient drilling effects

Active Publication Date: 2020-02-07
SOUTHWEST PETROLEUM UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for evaluating the ability of the drilling fluid to consolidate the well wall to break the surrounding rock, which solves the problem of inaccurate evaluation results of the performance of the drilling fluid stabilizing the well wall

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
  • Evaluation method for ability of drilling fluid to consolidate well wall broken surrounding rock
  • Evaluation method for ability of drilling fluid to consolidate well wall broken surrounding rock
  • Evaluation method for ability of drilling fluid to consolidate well wall broken surrounding rock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0034] Such as figure 1 As shown, an evaluation method for the ability of drilling fluid to consolidate the borehole wall to break the surrounding rock includes the following steps:

[0035] S1. Obtain fresh and complete downhole drilling coring with the same lithology as the broken formation, and drill a cylindrical sample. The diameter of the cylindrical sample is 50mm and the length is 50mm. For two disk samples with a ...

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 an evaluation method for the ability of drilling fluid to consolidate well wall broken surrounding rock. By means of the evaluation method for the ability of the drilling fluidto consolidate the well wall broken surrounding rock, quantitative evaluation for improving shear strength between broken blocks through the drilling fluid is realized, and reliable mechanical parameters are provided for the stability of the well wall of a fractured formation. Meanwhile, a scientific and effective experimental method is provided for performance optimization of the drilling fluidand optimization of the drilling fluid, a powerful support is provided for establishment of a fractured formation well wall stabilizing system technology, and the method is of great significance in safe and efficient drilling of deep oil and gas.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to an evaluation method for the ability of drilling fluid to consolidate a well wall and break surrounding rock. Background technique [0002] As the depth of oil and gas exploration and development continues to increase, oil and gas drilling often encounters broken formations, and wellbore instability such as block loss, collapse, and leakage in broken formations has become a major problem commonly faced by deep oil and gas drilling. On the basis of improving the inhibition and plugging performance of drilling fluid, strengthening the consolidation ability of drilling fluid to the broken surrounding rock is the most effective technical means to minimize and avoid the instability and collapse of the wellbore wall in fractured formations. Therefore, the scientific and reasonable evaluation of the drilling fluid’s ability to cement and consolidate the broken confining pre...

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 Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/005
Inventor 梁利喜刘向君熊健
Owner SOUTHWEST PETROLEUM UNIV
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