Method for preparing drilling diluter of TARA sulfonated tannin

A diluent and tannin technology, which is applied in the field of preparation of chemical chemical additives, can solve the problems of difficult drilling deep wells, ultra-deep wells, low raw material resources, unstable quality, etc., and achieve great development potential, stable output, improved The effect of ecological environment

Inactive Publication Date: 2007-12-26
THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drilling diluents in the prior art either have problems such as low raw material resources, high price, low and unstable output; or have unstable quality, and are difficult to adapt to the requirements of drilling deep wells and ultra-deep wells; It is necessary to improve the existing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A, add water by tower powder: the mass ratio of water=1: 4, leaching 5 times at 20 ℃ of temperature, each leaching 8h, after prior art filtration, merging filtrate, separation and concentration, get tower Extraction solution;

[0025] B, adding liquid caustic soda to the pH value of adjusting reaction solution is 8 in tara powder leaching solution;

[0026] C. Add sulfonating agent according to the molar ratio of tara tannin and sulfonating agent as 1:1, and react at 60°C for 4 hours to obtain a sulfonating reaction solution, wherein the sulfonating agent consists of industrial grade formaldehyde and industrial grade coke Sodium pyrosulfite and deionized water are mixed uniformly in the mass ratio of formaldehyde: sodium pyrosulfite: water=1: 1: 1;

[0027] D. In the sulfonation reaction solution of the above C step, according to the mass ratio of tara tannin: polymeric ferric sulfate = 1: 0.1, add complexing agent polymeric ferric sulfate, and perform a complexation r...

Embodiment 2

[0030] A, add water by the mass ratio of tower powder: water=1: 12, leaching 2 times at 80 ℃ of temperature, each time leaching 2h, after prior art filtering, merging filtrate, separating and concentrating, get tower Extraction solution;

[0031] B, adding liquid caustic soda to the pH value of adjusting reaction solution is 12 in tara powder leaching solution;

[0032] C. Add sulfonating agent according to the molar ratio of tara tannin and sulfonating agent as 1:5, and react at 120°C for 1 hour to obtain a reaction solution, wherein the sulfonating agent consists of industrial grade formaldehyde and industrial grade sodium pyrosulfite and water, by formaldehyde: sodium pyrite: water = 1: 1: 1 mass ratio mixing;

[0033] D, in the reaction liquid of above-mentioned C step, by tara tannin: the mass ratio of ferric sulfate=1:1, add complexing agent ferric sulfate, in 120 ℃ of complexation reaction 0.5h, obtain complexation reactant;

[0034] E. Concentrate, spray dry and pack...

Embodiment 3

[0036] A, add water by tower powder: the mass ratio of water=1: 6, leaching 4 times at 50 ℃ of temperature, each leaching 5h, after prior art filtration, merging filtrate, separation and concentration, get tower Extraction solution;

[0037] B, adding liquid caustic soda to the pH value of adjusting reaction solution is 10 in the tara powder leaching solution;

[0038] C. Add the sulfonating agent according to the molar ratio of tara tannin and sulfonating agent as 1:3, and react at 90°C for 2 hours to obtain a reaction liquid, wherein the sulfonating agent consists of industrial grade formaldehyde and industrial grade sodium pyrosulfite and water, by formaldehyde: sodium pyrite: water = 1: 1: 1 mass ratio mixing;

[0039] D. In the reaction solution of the above C step, according to the mass ratio of tara tannin: polymeric ferric sulfate = 1: 0.5, add complexing agent polymeric ferric sulfate, and perform complexation reaction at 90°C for 1.5h to obtain complexed reactant ;...

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PUM

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Abstract

This invention provides a method for preparing well drilling thinner tara sulfonated tannin. The method comprises: mixing tara powder and water, leaching at 20-80 deg.C for 2-5 times (2-8 h each time), filtering, incorporating the filtrates, separating, concentrating, adding an alkali solution to adjust the pH value to 8-12, adding a sulfonating agent, sulfonating at 60-120 deg.C for 1-4 h, adding a complexant, complexing at 60-120 deg.C for 0.5-3 h to obtain a complex, concentrating, spray-drying, and packaging to obtain tara sulfonated tannin thinner. The tara sulfonated tannin thinner has such advantages as renewable raw material, stable output and low cost. The method has such advantages little discharge of wastewater, exhaust gas and waste residue, easy treatment, and little pollution. The tara sulfonated tannin thinner is an environmentally friendly chrome-free thinner, and is suitable for high-temperature (180-220 deg.C) and high-density oil wells with a viscosity reduction ratio higher than 90%.

Description

technical field [0001] The invention relates to a preparation method of a diluent, in particular to a preparation method of a drilling diluent-Tara sulfonated tannin, and belongs to the technical field of preparation of chemical auxiliary agents. Background technique [0002] Viscosity reducer—that is, drilling thinner is an indispensable drilling fluid treatment agent in the drilling process, and it plays a very important role in adjusting the rheology of drilling fluid. At present, there are four major types of viscosity reducers used in drilling: (1) Viscosity reducers based on natural raw materials such as lignin, tannin, etc., such as sulfonated tannin, sulfonated lignite, (2) Polymer viscosity reducers, such as those containing maleic acid (anhydride) or acrylic acid, those containing sulfonic acid groups, or those containing cationic groups Zwitterionic viscosity reducers, etc.; (3) Inorganic viscosity reducers such as phosphate viscosity reducers, organic silicon vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C07H1/06C07C303/00
Inventor 张建云李志国王锐陈建江杨时宇夏定久
Owner THE RES INST OF RESOURCES INSECTS RIRI OF THE CHINESE ACADEMY OF FORESTRY
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