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

Drilling shaft lining stabilizer

A wellbore stabilizer and drilling technology, applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as large reservoir damage, achieve simple construction process, enhance wellbore stability, and improve drilling fluid performance Effect

Inactive Publication Date: 2009-02-11
XI'AN PETROLEUM UNIVERSITY
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, bromine salt and calcium salt completion fluids are widely used, and bromine salt and calcium salt completion fluids are easy to interact with underground fluids, including oil, natural gas, groundwater, seawater for well washing, carbon dioxide, etc. more damage

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 1

[0023] The raw material composition of this embodiment is: 30 parts of dimethyl 2 allyl ammonium chloride, 3 parts of dimethyl 2 allyl ammonium chloride-acrylamide polymer, 3 parts of nonionic surfactant OP-10, 2 parts of nonionic fluorosurfactant, 2 parts of cellulase, 3 parts of potassium chloride, and 57 parts of water; the molecular weight of the dimethyl 2 allyl ammonium chloride-acrylamide polymer is 400,000, and the The nonionic fluorosurfactant is SUNF-01, a fluorine-containing alkyl ethoxy ether alcohol nonionic surfactant, and the cellulase is cellulase SUNWEE-010.

[0024] Its preparation method is: weigh dimethyl 2 allyl ammonium chloride, dimethyl 2 allyl ammonium chloride-acrylamide polymer, nonionic surfactant OP-10, Ethoxyl ether alcohol non-ionic fluorosurfactant SUNF-01, cellulase SUNWEE-010, potassium chloride and water, after mixing, fully stir, so that all components are mixed evenly, and the finished well wall stabilizer is obtained.

Embodiment 2

[0026] The raw material composition of this embodiment is: 20 parts of dimethyl 2 allyl ammonium chloride, 2 parts of dimethyl 2 allyl ammonium chloride-acrylamide polymer, 1 part of nonionic surfactant OP-10, 2 parts of nonionic fluorosurfactant, 3 parts of cellulase, 5 parts of potassium chloride, and 67 parts of water; the molecular weight of the dimethyl 2 allyl ammonium chloride-acrylamide polymer is 350,000, and the The nonionic fluorosurfactant is SUNF-01, a fluorine-containing alkyl ethoxy ether alcohol nonionic surfactant, and the cellulase is cellulase SUNWEE-010.

[0027] The preparation method of this embodiment is the same as that of Example 1.

Embodiment 3

[0029] The raw material composition of this embodiment is: 35 parts of dimethyl 2 allyl ammonium chloride, 5 parts of dimethyl 2 allyl ammonium chloride-acrylamide polymer, 5 parts of nonionic surfactant OP-10, 1 part of nonionic fluorosurfactant, 1 part of cellulase, 5 parts of potassium chloride, and 48 parts of water; the molecular weight of the dimethyl 2 allyl ammonium chloride-acrylamide polymer is 450,000, and the The nonionic fluorosurfactant is SUNF-01, a fluorine-containing alkyl ethoxy ether alcohol nonionic surfactant, and the cellulase is cellulase SUNWEE-010.

[0030] The preparation method of this embodiment is the same as that of Example 1.

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 boring well wall stabilizer which is mainly used for solving the technical problem that storage layer is damaged due to unstable well wall and expansion of clay during the boring process; the well wall stabilizer consists of 20-35 parts of diallyldimethylammonium chloride, 2-5 parts of diallyldimethylammonium chloride-acrylamide polymer, 1-5 parts of non-ionic surfactant OP-10, 1-2 parts of fluoride-bearing alkyl ethoxy ether alcohol non-ionic surfactant, 1-3 parts of cellulose, 1-5 parts of KCl and 45-74 parts of water, according to the weight parts. The stabilizer can stabilize the well wall, greatly reduces the expansion rate of the clay at storage layer and eliminates the damages on the storage layer.

Description

technical field [0001] The invention belongs to the technical field of well completion engineering, and in particular relates to a drilling well wall stabilizer suitable for stabilizing the well wall, preventing clay expansion and eliminating reservoir damage during the well completion process. Background technique [0002] Oilfields use drilling fluid to clean and cool the drill bit during the drilling process, as well as to carry cuttings, rocks, soil or sand loosened by the drill bit. In addition, the drilling fluid can also reduce formation damage. Lining or smearing to prevent subsidence and by using drilling fluids to prevent the invasion of liquid and solid particles into permeable formations. [0003] However, in many areas, shale is sensitive to water and is unstable in the presence of water, so it swells or disperses when it encounters water. As a result, the cuttings are broken into smaller particles. At this time, the broken particles must be separated from the c...

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): C09K8/44
Inventor 屈展王俊奇盖海防陈军斌
Owner XI'AN PETROLEUM UNIVERSITY
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