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Preparation method of long-acting water-based paraffin inhibitor

A wax inhibitor, water-based technology, used in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve the problems of short service life, poor wax prevention effect, etc. Anti-wax effect, strong steric hindrance effect

Inactive Publication Date: 2018-05-18
CHANGZHOU AMANTE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a preparation method of a long-acting water-based wax preventive agent for the disadvantages of poor wax preventive effect and short service life of traditional wax preventive agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]Add polyvinyl alcohol and water into No. 1 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move No. , at a rotation speed of 500r / min, heat and stir to dissolve for 50min to obtain polyvinyl alcohol liquid; put (N-amidino)dodecylacrylamide and polyethylene glycol derivatives in 2 No. 2 beaker, and add p-dichlorobenzene with 0.2 times the quality of polyethylene glycol derivatives and ferrocene with 0.10 times the quality of polyethylene glycol derivatives to No. 2 beaker, and stir at a speed of 500r / min Mix for 50 minutes to obtain the modified additive; add sodium alginate and water to the No. 3 beaker at a mass ratio of 1:100, stir and mix with a glass rod for 30 minutes, let it stand for swelling for 4 hours, and then move the No. 3 beaker into the digital display to measure the speed. With a constant temperature magnetic stirrer, at a temperature of 100°C and a speed of 500r / min, heat and ...

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Abstract

The invention discloses a preparation method of long-acting water-based paraffin inhibitor, and belongs to the technical field of oil exploitation. The method comprises the steps that a performance additive, sodium alginate liquid and saccharomycetes liquid are stirred and mixed, a sodium sulfate solution is added subsequently, stirring and mixing continue to be conducted, cooling is conducted, aglutaraldehyde solution is dropwise added, stirring and mixing continue to be conducted, the pH is adjusted, filtration and drying are conducted, and a modified microcapsule is obtained; octenyl succinic anhydride is dropwise added in polyvinyl alcohol liquid, stirring and mixing are conducted, and a primary mixture is obtained; a sodium hydroxide solution is dropwise added in the primary mixture,the pH is adjusted to be 8.3-8.5, heating and stirring are conducted, and a secondary mixture is obtained; hydrochloric acid with the mass fraction being 8%-10% is dropwise added in the secondary mixture, the pH of the secondary mixture is adjusted to be 6.8-7.1, and modified polyvinyl alcohol liquid is obtained. According to the technical scheme, the prepared long-acting water-based paraffin inhibitor has the advantages of being excellent and long-acting in paraffin control effect.

Description

technical field [0001] The invention discloses a preparation method of a long-acting water-based anti-wax agent, which belongs to the technical field of petroleum exploitation. Background technique [0002] In oil drilling and pipeline transportation, the wax in crude oil is continuously precipitated in the form of crystals, forming a three-dimensional space network structure, and deposited in downhole devices, oil pipes and ground storage equipment, resulting in a continuous decline in oil well production and great difficulties in transportation. . Wax inhibitors can change the wax development process in crude oil, and their essence is to affect the lattice parameters of wax crystals. Macroscopically, wax appears in the form of crystals. [0003] At present, there are three types of wax inhibitors used in oil fields: polycyclic aromatic hydrocarbon type, surfactant type and polymer type. Due to its unique structure and excellent performance, the polymer wax inhibitor has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524F17D1/16C08F8/46C08F116/06
CPCC08F8/46C09K8/524F17D1/16C08F116/06
Inventor 陈兴权殷连海黄浩
Owner CHANGZHOU AMANTE CHEM CO LTD
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