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Additive and method for improving anti-shearing performance of alcohol-base crude oil drag-reducing agent and method

A drag reducer and anti-shear technology, which is applied in gas/liquid distribution and storage, mechanical equipment, piping systems, etc., can solve the problems of molecular chain breakage shear degradation, drag reducer loss of application performance, etc., to improve the application Performance, promotion of shear resistance, effect of enhancing rigidity

Active Publication Date: 2016-02-03
SHENGLI COLLEGE CHINA UNIV OF PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ultra-high molecular weight polymers are prone to molecular chain breakage and shear degradation during the application process, and this shear degradation property is permanent and irreversible, so the drag reducer loses its application performance

Method used

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  • Additive and method for improving anti-shearing performance of alcohol-base crude oil drag-reducing agent and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of additive that the present invention mentions is used to improve the anti-shear performance of alcohol base crude oil drag reducer, and its preparation method is as follows:

[0019] Add 20g of ethylene glycol butyl ether into the beaker, weigh 10g of isopropyl tris(dodecylbenzenesulfonyl) titanate (KR-9S) and slowly add it into the beaker, control the temperature at 30°C, and stir at 150r / min for 60min until fully mixed. Weigh 10g of polyethylene glycol cetyl ether, slowly add it to the beaker, control the temperature at 40°C, and stir at a speed of 200r / min for 60mins; at this time, weigh 0.2g of sodium dodecylbenzenesulfonate, and adjust the speed at 50r / min min, control the temperature at 40°C and continue to stir for 20mins; then weigh 0.1g of dodecyl dimethyl sulfopropyl betaine and add it to the beaker, control the temperature at 30°C, rotate at 200r / min, and continue to stir for 90 minutes to form alcohol groups Drag reducer anti-shear ad...

Embodiment 2

[0022] Embodiment 2: a kind of additive that the present invention mentions is used to improve the anti-shear performance of alcohol base crude oil drag reducer, and its preparation method is as follows:

[0023] Add 20g of ethylene glycol butyl ether into the beaker, weigh 2g of isopropyl tris(dodecylbenzenesulfonyl) titanate (KR-9S) and add it slowly, control the temperature at 30°C, stir at 150r / min for 30min, until fully mixed. Weigh 2g of polyethylene glycol cetyl ether, slowly add it into the beaker, control the temperature at 30°C, and stir at a speed of 200r / min for 60mins; at this time, weigh 0.1g of sodium dodecylbenzenesulfonate, and adjust the speed at 100r / min min, control the temperature at 30°C and continue to stir for 20mins; then weigh 0.04g of dodecyl dimethyl sulfopropyl betaine and add it to the beaker, control the temperature at 30°C, rotate at 200r / min, and continue to stir for 30 minutes to form alcohol groups Drag reducer anti-shear additive.

[0024]...

Embodiment 3

[0026] Embodiment 3: a kind of additive that the present invention mentions is used to improve the anti-shear performance of alcohol-based crude oil drag reducer, and its preparation method is as follows:

[0027] Add 20g of ethylene glycol butyl ether into the beaker, weigh 5g of isopropyl tris(dodecylbenzenesulfonyl) titanate (KR-9S) and add it slowly, control the temperature at 30°C, stir at 100r / min for 45min, until fully mixed. Weigh 3g of dodecyl polyoxyethylene ether, slowly add it into the beaker, control the temperature at 40°C, and stir at a speed of 150r / min for 60mins; at this time, weigh 0.15g of sodium dodecylbenzenesulfonate, and adjust the speed of 100r / min , control the temperature at 40°C and continue to stir for 30mins; then weigh 0.2g of dodecyldimethylsulfopropyl betaine and add it to the beaker, control the temperature at 30°C, rotate at 200r / min, and continue to stir for 60 minutes to form alcohol-based betaine Resist anti-shear additive.

[0028] Weig...

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Abstract

The invention relates to an additive and a method for improving the anti-shearing performance of an alcohol-base crude oil drag-reducing agent. The method comprises the following preparation steps of: 1, slowly adding titanate into a breaker containing butyl cellosolve or isooctyl alcohol, and completely mixing the materials; 2, continuously adding nonionic surfactants into the breaker, and stirring the materials for use; 3, adding anionic surfactants into the solution in the second step, and stirring the materials for use; 4, adding zwitterionic surfactants into the solution in the third step, and performing stirring to obtain the additive provided by the invention. The additive has the beneficial effects that the mutual effects between polymers and anti-shearing auxiliary agent molecules, auxiliary agent molecules, the auxiliary agent molecules and alcohol are used for solving the problem of irreversible degradation of macromolecular chains under the shearing effect. The additive provided by the invention has the advantages that the rigidity of polymer molecular chains is enhanced through the micelle reversible change and molecular entanglement effect, the anti-shearing performance of the crude oil drag-reducing agent is effectively improved, and the injection application cost is reduced.

Description

technical field [0001] The invention relates to the technical field of pipeline drag reduction transportation technology, in particular to an additive and a method for improving the anti-shear performance of an alcohol-based crude oil drag reducer. Background technique [0002] The oil drag reducer can increase the output when no additional equipment is added after the original pipeline reaches the maximum output; or in the case of maintaining the same output, reduce the operating pressure of the oil pipeline, reduce safety risks, and add drag reducer Increasing the throughput or reducing the conveying pressure has become a kind of conveying process. The commonly used oil drag reducer is polyalphaolefin with a molecular weight of several million. It dissolves in some varieties, stretches the molecules, and reduces the frictional energy loss in the oil flow through the elastic deformation of the molecular chain, reduces the flow resistance, and realizes the reduction. The pu...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L71/02C08K5/42
CPCC08K2201/014C08L23/00F17D1/16C08L71/02C08K5/42
Inventor 代晓东王余宝孔雪李军周西臣刘焕荣
Owner SHENGLI COLLEGE CHINA UNIV OF PETROLEUM
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