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Oil pipe paraffin control and scale removal agent and preparation method and application thereof

A descaling agent and oil pipe technology, applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of low wax prevention performance, inability to effectively improve the low temperature rheology of waxy crude oil, etc., and achieve a green preparation method. Environmental protection, low cost of preparation raw materials, good effect of anti-waxing and descaling

Active Publication Date: 2022-03-01
天信管业科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of oil-based wax crystal improver cannot effectively improve the low-temperature rheology of waxy crude oil, so the wax-repellent performance is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a kind of anti-wax descaling agent for oil pipe, the oil pipe anti-wax descaling agent for oil pipe of this embodiment is made through the following steps:

[0039] Disperse 1 g of graphene oxide powder evenly in 1 L of water solvent under the action of ultrasound to obtain a graphene oxide suspension;

[0040] Subsequently, the binary polymer monomer and the silane coupling agent were stirred at a speed of 350r / min for 30min to make it uniformly dispersed in the graphene oxide suspension, and then the initiator was added dropwise, and at a speed of 300r / min Stir the reaction at 80°C for 2 hours to carry out suspension polymerization. After the reaction is over, add the descaling agent and continue to stir the reaction at this temperature at a rate of 250r / min for 20 minutes, and then cool to room temperature to obtain the oil pipe wax and descaling agent.

[0041] In the present embodiment, the above-mentioned binary polymer monomer is made up ...

Embodiment 2

[0048] This embodiment provides a kind of anti-wax descaling agent for oil pipe, the oil pipe anti-wax descaling agent for oil pipe of this embodiment is made through the following steps:

[0049] Disperse 100 mg of graphene oxide powder evenly in 1 L of water solvent under the action of ultrasound to obtain a graphene oxide suspension;

[0050] Subsequently, the binary polymer monomer and the silane coupling agent were stirred at a speed of 250r / min for 40min, so that they were uniformly dispersed in the graphene oxide suspension, and then the initiator was added dropwise, and at a speed of 250r / min Stir the reaction at 85°C for 1 hour to carry out suspension polymerization. After the reaction, add the detergent and continue to stir the reaction at the temperature at a rate of 150r / min for 30 minutes, then cool to room temperature to obtain the oil pipe wax anti-scaling agent.

[0051] In the present embodiment, the above-mentioned binary polymer monomer is composed of hexade...

Embodiment 3

[0058] This embodiment provides a kind of anti-wax descaling agent for oil pipe, the oil pipe anti-wax descaling agent for oil pipe of this embodiment is made through the following steps:

[0059] Disperse 500 mg of graphene oxide powder evenly in 1 L of water solvent under the action of ultrasound to obtain a graphene oxide suspension;

[0060] Subsequently, the binary polymer monomer and the silane coupling agent were stirred at a speed of 450r / min for 20min to uniformly disperse them in the graphene oxide suspension, and then the initiator was added dropwise, and at a speed of 350r / min Stir the reaction at 75°C for 3 hours to carry out suspension polymerization. After the reaction, add detergent and continue to stir and react at this temperature at a rate of 350r / min for 10 minutes.

[0061] In the present embodiment, the above-mentioned binary polymer monomer is made up of octadecyl methacrylate and styrene methacrylate, and the molar ratio of stearyl methacrylate and styr...

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Abstract

The invention belongs to the technical field of crude oil paraffin inhibitors, and discloses an oil pipe paraffin inhibitor and a preparation method and application thereof.The preparation method comprises the steps that graphene oxide powder is evenly dispersed in a water solvent under the ultrasonic action to obtain graphene oxide turbid liquid; then, uniformly dispersing a binary polymer monomer and a silane coupling agent into the graphene oxide turbid liquid through primary stirring treatment, and dropwise adding an initiator for suspension polymerization, so that the binary polymer monomer is polymerized on the surface of graphene oxide to obtain a binary polymer-graphene oxide compound; and then adding the descaling agent, stirring for the second time, and uniformly mixing, so as to obtain the paraffin-control descaling agent for the oil pipe. The oil pipe paraffin and scale inhibitor is good in paraffin and scale inhibition effect, the preparation method is simple and easy to operate, the preparation raw materials are low in cost, and the preparation method is green and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of wax inhibitors for crude oil, in particular to an oil pipe wax inhibitor and scale remover as well as its preparation method and application. Background technique [0002] Waxing phenomenon means that when the temperature drops below the wax precipitation point, wax is precipitated from the crude oil in the form of crystals. With the decrease of temperature and pressure and the precipitation of gas, the crystallized wax aggregates and grows to form wax crystals deposited on the pipe wall on the solid surface. [0003] Waxing in tubing will not only increase the flow resistance, make the transportation of crude oil difficult, and affect the output of crude oil; the deposition of wax crystals on the tubing wall will also affect the normal operation of the pumping equipment and reduce the service life of the equipment. [0004] In order to avoid this situation, oilfields generally adopt chemical anti-wax me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/18C08F220/40C08F230/08C09K8/524
CPCC08F292/00C09K8/524C08F220/1818C08F220/40C08F230/085
Inventor 颜义博闫文科闫宇刘伟
Owner 天信管业科技集团有限公司
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