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Formula for viscosity reducer

A technology of viscosity reducer and formula, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of poor salt resistance, short maintenance cycle, narrow application range, etc., to reduce viscosity, improve fluidity, small size effect

Active Publication Date: 2012-11-21
三川德青工程机械有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic phosphine viscosity reducers have problems such as poor salt resistance, short maintenance cycle, and narrow application range.

Method used

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  • Formula for viscosity reducer
  • Formula for viscosity reducer
  • Formula for viscosity reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A formulation of a viscosity reducer, which is formulated from the following components (percentage by weight):

[0027] Industrial grade potassium aluminum sulfate dodecahydrate 35%; Industrial grade sodium hexametaphosphate 28%; Industrial grade sodium bicarbonate 26%; Industrial grade sodium citrate 11%;

[0028] The viscosity reducer of the present invention is prepared by fully mixing the aluminum potassium sulfate, sodium hexametaphosphate, sodium bicarbonate and sodium citrate in the above weight percentage.

[0029] Laboratory preparation of mud: Measure 1000 mL of mud, add 10 grams of bentonite, and stir until uniform. Measure mud viscosity with engineering viscosity test funnel, pH value is 9-10.

[0030] Measure 700mL of the above mud, add the prepared viscosity reducer to reduce the viscosity of the mud (the weight of the added viscosity reducer is 0.13% of the weight of the mud), stir it evenly, and count the time when 500 mL leaks out, the measured The v...

Embodiment 2

[0034] A formulation of a viscosity reducer, which is formulated from the following components (percentage by weight):

[0035] Industrial grade potassium aluminum sulfate dodecahydrate 35%; Industrial grade sodium hexametaphosphate 25.7%; Industrial grade sodium bicarbonate 25.1%; Industrial grade sodium citrate 14.2%;

[0036] The viscosity reducer of the present invention is prepared by fully mixing the aluminum potassium sulfate, sodium hexametaphosphate, sodium bicarbonate and sodium citrate in the above weight percentage.

[0037] Laboratory preparation of mud: Measure 1000 mL of mud, add 10 grams of bentonite, and stir until uniform. Measure mud viscosity with engineering viscosity test funnel, pH value is 9-10.

[0038] Measure 700mL of the above mud, add the prepared viscosity reducer to reduce the viscosity of the mud (the weight of the added viscosity reducer is 0.18% of the weight of the mud), stir it evenly, and count the time when 500 mL leaks out, the measured ...

Embodiment 3

[0042] A formulation of a viscosity reducer, which is formulated from the following components (percentage by weight):

[0043] Industrial grade potassium aluminum sulfate dodecahydrate 32.8%; Industrial grade sodium hexametaphosphate 25.2%; Industrial grade sodium bicarbonate 22.4%; Industrial grade sodium citrate 19.6%;

[0044] The viscosity reducer of the present invention is prepared by fully mixing the aluminum potassium sulfate, sodium hexametaphosphate, sodium bicarbonate and sodium citrate in the above weight percentage.

[0045] Laboratory preparation of mud: Measure 1000 mL of mud, add 10 grams of bentonite, and stir until uniform. Measure mud viscosity with engineering viscosity test funnel, pH value is 9-10.

[0046] Measure 700mL of the above-mentioned mud, add the prepared viscosity reducer to reduce the viscosity of the mud (the weight of the added viscosity reducer is 0.23% of the weight of the mud), stir it evenly, and count the time when 500 mL leaks out, t...

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Abstract

The invention provides a formula for a viscosity reducer which is prepared from the following components: aluminum potassium sulfate dodecahydrate, sodium hexametaphosphate, sodium bicarbonate and sodium citrate. The viscosity reducer accounting for 0.13 to 0.3% of the weight of slurry is added into shield and drilling engineering slurry for viscosity adjustment. The above-mentioned aluminum potassium sulfate, sodium hexametaphosphate, sodium bicarbonate and sodium citrate are all industrial products, cost little, have stable physical and chemical properties and are harmless to the environment. The formula for the viscosity reducer provided by the invention can effectively reduce the viscosity of high-viscosity engineering slurry; and the viscosity reducer is convenient to blend, transport, store and use and has obvious economic benefits.

Description

technical field [0001] The invention relates to a viscosity reducer, in particular to a viscosity reducer formulation for rapid treatment of high viscosity shield and drilling engineering mud viscosity reduction. Background technique [0002] The viscosity reducer of tunnel crossing engineering mud plays a very important role in adjusting the rheology of tunnel crossing engineering mud. [0003] With the development of industry, the depth, span and diameter of tunnels are getting larger and larger, and the role of engineering mud viscosity reducers is also increasing; especially the increase in the number of special tunnels, complex tunnels and ultra-deep tunnels has great impact on tunnel crossing projects. Mud process technology puts forward higher and higher requirements, and the problem that the viscosity and shear force of engineering mud rise rapidly with the progress of the project is very prominent. At the same time, as the formation becomes more and more complex, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/04C09K8/03C04B22/14C04B22/16
Inventor 陈益人廖照江黄金陈玉荣李万权张东刘汉涛谭明刚邓金金
Owner 三川德青工程机械有限公司
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