Preparation technology of bentonite for oil-based drilling fluid

A technology for oil-based drilling fluid and preparation process, applied in the field of bentonite modification and processing, can solve the problems of sufficient exchange of unfavorable exchangeable ions, affecting the final performance of the product, and affecting the adequacy of organicization, etc. The effect of the effect, the dispersion effect is improved

Active Publication Date: 2021-07-09
ZHEJIANG SHUREN UNIV +2
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It still has the following deficiencies: montmorillonite is composed of multi-layer stacked wafers. Due to the unbalanced charge, the bottom of the crystal layer has a negative charge and the end face is positively charged, thus forming a card-room structure in which the end face is adsorbed in the aqueous medium. , the so-called card room structure, that is, the montmorillonite wafer is suspended in the slurry in the form of tens or even thousands of clusters. Under this structure, it is not conducive to the formation of sodium ions, hydrogen ions and the montmorillonite in the center of the clusters. The internal exchangeable ions are fully exchanged, which affects the fullness of organicization and then affects the final performance of the product

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
  • Preparation technology of bentonite for oil-based drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation process of bentonite for oil-based drilling fluid, said process comprising the steps of:

[0028] Step S1: rough selection of raw material bentonite, pulverized to a certain particle size for subsequent use;

[0029] Step S2: pulping, adding a certain amount of water and a pulping auxiliary to the raw material bentonite in step S1 to make a slurry, and the pulping auxiliary is composed of sodium lignosulfonate and amino trihydric alcohol;

[0030] Step S3: Artificial sodiumization, adding a certain amount of sodium salt to the slurry in step S2, and sodiumizing for a period of time;

[0031] Step S4: purification;

[0032] Step S5: organic activation, add a certain amount of organic ammonium salt and activation auxiliary agent, activate the reaction for a certain period of time, the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and A mixture of tungstophosphoric acid PW12;

[0033] Step S6: filtering, drying, c...

Embodiment 2

[0036] A preparation process of bentonite for oil-based drilling fluid, said process comprising the steps of:

[0037] Step S1: rough selection of raw material bentonite, pulverized to a certain particle size for subsequent use;

[0038] Step S2: pulping, adding a certain amount of water and a pulping auxiliary to the raw material bentonite in step S1 to make a slurry, and the pulping auxiliary is composed of sodium lignosulfonate and amino trihydric alcohol;

[0039] Step S3: Artificial sodiumization, adding a certain amount of sodium salt to the slurry in step S2, and sodiumizing for a period of time;

[0040] Step S4: purification;

[0041] Step S5: organic activation, add a certain amount of organic ammonium salt and activation auxiliary agent, activate the reaction for a certain period of time, the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and A mixture of tungstophosphoric acid PW12;

[0042] Step S6: filtering, drying, c...

Embodiment 3

[0045] A preparation process of bentonite for oil-based drilling fluid, said process comprising the steps of:

[0046] Step S1: rough selection of raw material bentonite, pulverized to a certain particle size for subsequent use;

[0047] Step S2: pulping, adding a certain amount of water and a pulping auxiliary to the raw material bentonite in step S1 to make a slurry, and the pulping auxiliary is composed of sodium lignosulfonate and amino trihydric alcohol;

[0048] Step S3: Artificial sodiumization, adding a certain amount of sodium salt to the slurry in step S2, and sodiumizing for a period of time;

[0049] Step S4: purification;

[0050] Step S5: organic activation, add a certain amount of organic ammonium salt and activation auxiliary agent, activate the reaction for a certain period of time, the activation auxiliary agent is 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and A mixture of tungstophosphoric acid PW12;

[0051] Step S6: filtering, drying, c...

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 present invention relates to a preparation process of bentonite for oil-based drilling fluid, comprising the following steps: step S1: rough selection of raw material bentonite, crushing to a certain particle size for later use; step S2: pulping, the raw material bentonite of step S1, Add a certain amount of water and a pulping auxiliary to make a slurry, and the pulping auxiliary is composed of sodium lignosulfonate and amino trihydric alcohol; step S3: artificial sodium, adding a certain amount to the slurry in step S2 A certain amount of sodium salt, sodiumization reaction for a period of time; step S4: purification; step S5: organic activation, adding a certain amount of organic ammonium salt and activation aid, activation reaction for a certain period of time, the activation aid is 1-ethyl-(3 A mixture of dimethylaminopropyl) carbodiimide hydrochloride and tungstophosphoric acid PW12; step S6: filtering, drying, pulverizing and sieving to obtain bentonite for oil-based drilling fluid. Greatly improve the dispersibility of montmorillonite, improve the effect of sodium, and then improve the organicization, greatly improving the performance of organic bentonite.

Description

technical field [0001] The invention relates to a preparation process of bentonite for oil-based drilling fluid, and belongs to the technical field of bentonite modification and processing. Background technique [0002] Organic bentonite is a new field of fine chemicals developed in recent years. It is widely used in special markets and is an indispensable additive in industries such as paints, coatings, petroleum, cosmetics, and catalyst carriers. Used as an anti-sedimentation additive in paints, it can prevent pigments from sinking and agglomerating. It can be used as a flow rate control agent in emulsions. It can be used in oil drilling. It can be used as an additive for oil-based mud to increase the consistency of mud and improve Mud dispersibility and suspension. [0003] Publication No. 104031623A, a Chinese invention patent published on September 10, 2014, discloses a kind of organic bentonite for white oil-based drilling fluid and its preparation method, which impro...

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): C01B33/44C09K8/14C09K8/32
CPCC01B33/44C09K8/145C09K8/32
Inventor 余作龙蒋乐高饶桂维严小平谢广发魏云潇付长春
Owner ZHEJIANG SHUREN UNIV
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap