Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of drilling fluid treatment agent and its preparation method and drilling fluid

A technology of drilling fluid treatment agent and compound, which is applied in the field of drilling to achieve good inhibition performance, simple operation steps and high product yield

Active Publication Date: 2020-01-14
中石化石油工程技术服务有限公司 +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, chitosan derivatives that can be used in drilling fluids have not been reported

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
  • A kind of drilling fluid treatment agent and its preparation method and drilling fluid
  • A kind of drilling fluid treatment agent and its preparation method and drilling fluid
  • A kind of drilling fluid treatment agent and its preparation method and drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The invention provides a kind of preparation method of drilling fluid treatment agent, comprises the following steps:

[0039] (1) reacting chitosan, water, alkaline compound and alcohol compound to obtain the first intermediate product;

[0040] (2) reacting the first intermediate product with chlorocarboxylic acid to obtain the second intermediate product;

[0041] (3) reacting the second intermediate product, protonic acid and 2,3-epoxypropyltrialkylammonium chloride to obtain the drilling fluid treatment agent;

[0042] In the step (1) of the present invention, the chitosan is subjected to alkaline and gelatinization reactions under the action of the basic compound and the alcohol compound to activate the chitosan, which is beneficial to the modification of the chitosan in the subsequent process. In the present invention, the reaction temperature in the step (1) is preferably 50-80°C, more preferably 55-75°C, most preferably 60-70°C. In the present invention, the ...

Embodiment 1

[0098] By weight, 16 parts of chitosan (number average molecular weight is 200000), 150 parts of water, 20 parts of sodium hydroxide and 40 parts of methanol are stirred and mixed uniformly, and the reaction is carried out at 50 ° C for 0.5 hour to obtain the first Intermediate product; the first intermediate product and 24 parts of chloroacetic acid were stirred and reacted at 55°C for 2 hours to obtain the second intermediate product; after adding 2 parts of sulfamic acid to the second intermediate product to dissolve completely, add 15 parts Parts of 2,3-epoxypropyltrimethylammonium chloride were reacted at 60°C for 2 hours to obtain a reddish-brown viscous liquid; the pH value of the above liquid was adjusted to be neutral, and the solid was obtained by filtration, and 20 parts of methanol After washing the solid, suction filter, then wash the solid with 40 parts of propanol, and finally wash the solid with 100 parts of water, filter with suction, and dry to obtain a drilli...

Embodiment 2

[0101] By weight, 16 parts of chitosan (the number average molecular weight is 240000), 170 parts of water, 25 parts of sodium carbonate and 45 parts of ethanol are mixed uniformly, and the reaction is carried out at 60 ° C for 1 hour to obtain the first intermediate product; the first intermediate product and 30 parts of chloropropionic acid were stirred and reacted at 60°C for 2.5 hours to obtain the second intermediate product; after adding 3 parts of p-toluenesulfonic acid to the second intermediate product to completely dissolve, then add 18 parts of 2,3-epoxypropyltriethylammonium chloride were reacted at 70°C for 2.5 hours to obtain a reddish-brown viscous liquid; the pH value of the above liquid was adjusted to neutral, and the solid was obtained by filtration; the The solid was washed with 25 parts of methanol and then suction-filtered, then washed with 50 parts of isopropanol and then suction-filtered, and finally washed with 120 parts of water and dried by suction-fi...

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 provides a preparation method for a drilling-fluid treating agent. The preparation method comprises the following steps: (1) subjecting chitosan, water, an alkaline compound and an alcohol compound to a reaction so as to obtain a first intermediate; (2) reacting the first intermediate with chlorocarboxylic acid so as to obtain a second intermediate; and (3) subjecting the second intermediate, protonic acid and 2,3-epoxypropyltrialkylammonium chloride to a reaction so as to obtain the drilling-fluid treating agent. The method provided by invention prepares the drilling-fluid treating agent with a specific structure. The drilling-fluid treating agent with the specific structure has good inhibition performance, lubrication performance, filtrate loss reduction performance and resistance to salt pollution, and is applicable to drilling fluids. Moreover, the preparation method for the drilling-fluid treating agent is mild in reaction conditions, simple in operation steps and high in product yield. The invention also provides the drilling-fluid treating agent and a drilling fluid.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a drilling fluid treatment agent, a preparation method thereof and drilling fluid. Background technique [0002] Chitosan is a derivative produced after deacetylation of chitin. It is an alkaline polysaccharide containing amino groups. It has the advantages of non-toxicity, biocompatibility and biodegradability, and has been favored by researchers in different fields. extensive attention. The chitosan molecular chain contains a large number of active groups such as hydroxyl and amine groups. These active groups make it easy to undergo derivatization and modification. Therefore, chitosan-based modified derivative functional materials have attracted more and more attention. . The 2-position amino group and the 6-position hydroxyl group in chitosan molecules are the main active sites for chemical reactions, and chitosan derivatives with specific properties can be obtained by intr...

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): C08B37/08C09K8/035C09K8/12
CPCC08B37/003C09K8/035C09K8/12C09K2208/34
Inventor 司西强王中华樊好福雷祖猛吕跃滨谢俊
Owner 中石化石油工程技术服务有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com