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Oil field industry defoaming agent

A defoamer and industrial technology, applied in the field of oilfield industrial defoamer, can solve the problems of lower cooling bit efficiency, lower mud density, difficult mud circulation, etc., and achieve the effects of reducing dependence, reducing surface tension and high safety.

Inactive Publication Date: 2015-06-10
QINGDAO HAOTAI WATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the many mud treatment agents, some have foaming properties, such as iron chromium lignosulfonate, sulfonated lignite, sodium alkylsulfonate, polyacrylamide salt, etc., when added to water-based mud, Under gas and mechanical agitation, a large number of air bubbles will be generated in the mud, resulting in a decrease in the density of the mud, poor lubrication performance, reduced efficiency of cooling the drill bit, and certain difficulties in the circulation of the mud.

Method used

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  • Oil field industry defoaming agent
  • Oil field industry defoaming agent
  • Oil field industry defoaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018]

[0019] Its preparation method is: polydimethylsiloxane, methoxy polyether and n-dodecene are catalyzed by chloroplatinic acid, and the solvent-free hydrosilation reaction is carried out to prepare polyether and long-chain alkyl co-modification Silicone oil; drop catalyst and allyl polyether and long-chain olefin mixture to make it react, depressurize to remove excess polyether and olefin mixture that did not participate in the reaction to obtain the product.

[0020] The invention greatly reduces the complexity of the process, simplifies the operation process, reduces the dependence on the production equipment, and saves the production cost.

Embodiment 2

[0022]

[0023] The preparation method is the same as above.

[0024] The invention has good defoaming performance, the defoaming rate is more than 85%, the defoaming speed is fast, and the generation of bubbles can be suppressed for a long time; the centrifuge test is carried out in a centrifuge with a rotating speed of 2000r / min, and the continuous 30min does not delaminate and is stable Good performance.

Embodiment 3

[0026]

[0027] The preparation method is the same as above.

[0028] The invention enhances the defoaming and antifoaming properties of the defoaming agent, reduces the surface tension of the defoaming agent system, thereby improving the overall performance of the defoaming agent, and simultaneously improves the corrosion resistance, solvent resistance and oil resistance of the defoaming agent.

[0029] The invention has no physiological activity, no corrosion, no toxicity, no adverse side effects, no combustion, no explosion, high safety, good diffusibility and permeability, fast defoaming and less dosage.

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Abstract

The invention discloses an oil field industry defoaming agent comprising poly dimethyl siloxane, methoxy poly ether, 1-dodecene, hexamethyl disiloxane, octamethylcyclosiloxane and a catalyst. The preparation method is as follows: polyether and long chain alkyl co-modified silicone oil is prepared by solvent-free hydrosilation of poly dimethyl siloxane, methoxy poly ether and 1-dodecene under the catalysis effects of chloroplatinic acid, the catalyst and an allyl polyether and long chain olefin mixture are added dropwise for reaction, and unreacted excess polyether and olefin mixture is removed under reduced pressure to obtain the product. The oil field industry defoaming agent enhances the antifoaming and defoaming performance, reduces the defoaming agent system surface tension so as to improve the defoaming agent overall performance, and at the same time improves the defoaming agent corrosion resistance, solvent resistance and oil resistance.

Description

technical field [0001] The invention relates to a defoamer, more specifically, the invention relates to a defoamer for oil field industry, which belongs to the technical field of environmental protection. Background technique [0002] Defoamers commonly used in industry can generally be divided into three categories: silicone defoamers, organic defoamers and polyether defoamers. Compared with ordinary defoamers, silicone defoamers have strong defoaming ability, are not easy to chemically react with foaming media, are non-toxic, and are physiologically inert. They are the most widely used defoamers. At present, in the production of silicone emulsion defoamers, homogenizers and grinders are mostly used to cut the emulsion, so as to enhance the emulsification effect. The production process is cumbersome, the operation is relatively complicated, the requirements for equipment are relatively high, and the production investment is relatively high. , the cost is high. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C08G77/46C08G77/38
CPCC09K8/035C08G77/38C08G77/46
Inventor 李博周相勇
Owner QINGDAO HAOTAI WATER
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