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High temperature-resisting iron-chromium lignosulfonate diluent and preparation method thereof

A technology of lignosulfonate and high temperature resistance, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problem of chromium-free diluents due to the high cost of raw materials, high cost of high temperature resistant diluents, and no inhibition function and other issues, to achieve the effect of suitable promotion, low cost and strong high temperature resistance

Inactive Publication Date: 2011-05-18
天津亚兰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing drilling fluid dilutions include chromium-containing products and chromium-free products. Chromium-containing products use sodium dichromate as a raw material, while chromium is a heavy metal element, which pollutes the environment and has been restricted in use. Raw materials are expensive and costly, making it difficult to popularize and apply; in addition, the existing drilling fluid diluents either have the function of dilution and do not have the function of inhibition, or on the contrary, they do not have the function of both; in addition, the existing anti-high temperature dilution The cost of the agent is high and cannot meet the needs

Method used

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Effect test

Embodiment

[0013] Embodiment: a kind of iron-chromium lignosulfonate anti-high temperature diluent, it is solvent with water, contains iron-chromium lignosulfonate 20-30%, acrylamide 5-6%, sodium hydroxide 7-12% , sodium silicate 15-18%, the rest is water.

[0014] Its preparation method comprises the following steps:

[0015] (1) Add water to the reaction kettle, heat it to 50-60 degrees,

[0016] (2) Add iron chromium lignosulfonate into hot water, stir to dissolve,

[0017] (3) Add acrylamide to (2), heat to 80-95 degrees, react for 2-4 hours,

[0018] (4) Add sodium hydroxide, stir to dissolve, react for 1 hour,

[0019] (5) Then add sodium silicate, heat to 70-100 degrees, and react for 1 hour.

[0020] (6) Concentrate the solution to 30-40% at 100 degrees, dry at 100 degrees, and crush.

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Abstract

The invention provides a high temperature-resisting iron-chromium lignosulfonate diluent and a preparation method thereof, belonging to chemical products. The high temperature-resisting iron-chromium lignosulfonate diluent is characterized by using water as a solvent and containing 20-30% of iron-chromium lignosulfonate, 5-6% of acrylamide, 7-12% of sodium hydroxide and15-18% of sodium silicate, adding the water in a reaction kettle for heating, adding the iron-chromium lignosulfonate again, stirring, dissolving, adding the acrylamide, heating for reaction, adding the sodium hydroxide, stirring, dissolving, reacting, adding sodium silicate, heating for reaction, concentrating solution, drying and smashing. The invention has the beneficial effects that the diluent prepared by the method has the advantages of no pollution, cheap price, appropriate popularization, inhibition and dilution functions, strong high temperature performance, good dilution property, low cost and stable performance.

Description

technical field [0001] The invention relates to a diluent and a preparation method thereof, in particular to an iron-chromium lignosulfonate anti-high temperature diluent and a preparation method thereof. Background technique [0002] Existing drilling fluid dilutions include chromium-containing products and chromium-free products. Chromium-containing products use sodium dichromate as a raw material, while chromium is a heavy metal element, which pollutes the environment and has been restricted in use. Raw materials are expensive and costly, making it difficult to popularize and apply; in addition, the existing drilling fluid diluents either have the function of dilution and do not have the function of inhibition, or on the contrary, they do not have the function of both; in addition, the existing anti-high temperature dilution The cost of the agent is high and cannot meet the needs. Contents of the invention [0003] The purpose of the present invention is to overcome th...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 赵志国
Owner 天津亚兰化工有限公司