Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Betonite for non-excavation drilling fluid

A technology of bentonite and drilling fluid, which is applied in the field of trenchless horizontal directional drilling and bentonite in water-sensitive strata, can solve the problems of hole wall stability, improper use of drilling fluid, poor quality of bentonite, etc., to meet the requirements of hole wall stability , cost-effective, high pulping rate

Active Publication Date: 2015-07-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When trenchless horizontal directional drilling crosses obstacles such as urban pipeline networks, rivers and lakes, and farmland, it often encounters water-sensitive formations such as clay layers, silt silt layers, and mud shale. At this time, the stability of the hole wall The stability of the bentonite has become a big problem, often due to improper use of drilling fluid or poor quality of bentonite, resulting in instability of the hole wall or even project scrapping

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
  • Betonite for non-excavation drilling fluid
  • Betonite for non-excavation drilling fluid
  • Betonite for non-excavation drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The bentonite for non-excavation drilling fluid provided in this embodiment is mixed by the dry powder of sodium bentonite, polymer and shale inhibitor, and the mass ratio between sodium bentonite, polymer and shale inhibitor is 15:1.75:2.75, wherein the sodium bentonite sodium bentonite is sodium bentonite produced in Weifang, Shandong, the polymer is konjac, and the shale inhibitor is polyethylene glycol PEG-10000.

[0019] The method for adopting the bentonite configuration drilling fluid provided in the present embodiment may further comprise the steps:

[0020] According to the People's Republic of China Petroleum and Natural Gas Industry Standard "Bentonite for Drilling Fluid Test" (SY5490-93) to prepare drilling fluid: add water to the container (mud cup), then add bentonite for trenchless drilling fluid, and add bentonite per 100mL of water The amount is 3g, stir at high speed for 5 minutes, pause to scrape the cup wall, continue to stir for 15 minutes, cover an...

Embodiment 2

[0044] The bentonite for non-excavation drilling fluid provided in this embodiment is mixed by the dry powder of sodium bentonite, polymer and shale inhibitor, and the mass ratio between sodium bentonite, polymer and shale inhibitor is 16:2:3, wherein the sodium bentonite sodium bentonite is sodium bentonite produced in Xiazijie, Xinjiang, the polymer is konjac, and the shale inhibitor is polyalcohol JLX.

[0045] The method for adopting the bentonite configuration drilling fluid provided in the present embodiment may further comprise the steps:

[0046] According to the People's Republic of China Petroleum and Natural Gas Industry Standard "Bentonite for Drilling Fluid Test" (SY5490-93) to prepare drilling fluid: add water to the container (mud cup), then add bentonite for trenchless drilling fluid, and add bentonite per 100mL of water The amount is 3g, stir at high speed for 5 minutes, pause to scrape the cup wall, continue to stir for 15 minutes, cover and let stand for 16 ...

Embodiment 3

[0061] The bentonite for non-excavation drilling fluid provided in this embodiment is mixed by the dry powder of sodium bentonite, polymer and shale inhibitor, and the mass ratio between sodium bentonite, polymer and shale inhibitor is 17:2.25:3.25, wherein the sodium bentonite sodium bentonite is sodium bentonite produced in Xiazijie, Xinjiang, the polymer is konjac, and the shale inhibitor is polyethylene glycol PEG-10000.

[0062] The method for adopting the bentonite configuration drilling fluid provided in the present embodiment may further comprise the steps:

[0063] According to the People's Republic of China Petroleum and Natural Gas Industry Standard "Bentonite for Drilling Fluid Test" (SY5490-93) to prepare drilling fluid: add water to the container (mud cup), then add bentonite for trenchless drilling fluid, and add bentonite per 100mL of water The amount is 3g, stir at high speed for 5 minutes, pause to scrape the cup wall, continue to stir for 15 minutes, cover 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

PropertyMeasurementUnit
shear viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a betonite for a non-excavation drilling fluid. The betonite is a mixture of the dry powders of sodium bentonite, polymer and a shale inhibitor in a mass ratio of (15-17):(1.75-2.25):(2.75-3.25), wherein the polymer is konjac. The pulping rate of betonite is not less than 30m<3> / T, and compared with a common drilling fluid betonite, the betonite has the advantages of higher pulping rate, convenience in use and better cost performance. A drilling liquid prepared by using the betonite has good rheological property, de-filtration property and a good inhibition effect, and can satisfy requirements on debris carrying and hole wall stability of water sensitive stratum during non-excavation horizontal directional drilling.

Description

technical field [0001] The invention provides a bentonite, in particular to a bentonite used for drilling fluid in a trenchless process, which is particularly suitable for trenchless horizontal directional drilling in water-sensitive formations, and belongs to the field of geological drilling. Background technique [0002] When trenchless horizontal directional drilling crosses obstacles such as urban pipe networks, rivers and lakes, and farmland, it often encounters water-sensitive formations such as clay layers, silt silt layers, and mud shale. At this time, the stability of the hole wall The stability of the bentonite has become a big problem, often due to improper use of drilling fluid or poor quality of bentonite, resulting in instability of the hole wall or even project scrapping. By choosing high-quality and high-efficiency bentonite, the viscosity, shear force and inhibition effect of drilling fluid can be effectively improved, the filtration loss can be reduced, the...

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): C09K8/32C09K8/14
Inventor 蔡记华袁野曹伟建
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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
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