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Special solid crude oil wax preventer for wax preventer

The invention relates to a wax inhibitor and a wax inhibitor technology, which are applied in the field of a special solid crude oil wax inhibitor for the wax inhibitor and the preparation field thereof, which can solve the problems of high cost and short period of regular wax cleaning in the wellbore, and achieve low cost and inhibit the wax deposition in the wellbore. , the effect of improving stability

Active Publication Date: 2018-01-16
NORTHEAST GASOLINEEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the technical problems of the existing crude oil paraffin inhibitors, such as the short period of regular wax removal in the wellbore and the high cost; and provides a solid crude oil paraffin inhibitor special for the paraffin preventer

Method used

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Embodiment 1

[0019] Embodiment 1: In order to solve the problems of the technologies described above, in terms of mass percentage, the special solid crude oil wax inhibitor for wax preventer of the present invention is composed of 1% ionic fluoride salt surfactant (sodium perfluorinate), 1% ionic Type citrate surfactant (sodium citrate), 2% non-ionic citrate surfactant (cetyl citrate), 6% particle size of 500 mesh double branched octadecyl bromide Ammonium-modified montmorillonite and 90% tetrapolymer are prepared by blending injection molding; wherein, the tetrapolymer is made of monomer acrylate higher alcohol ester, vinyl acetate, oleic acid higher alcohol ester, styrene is polymerized, the ratio of the total moles of vinyl acetate, oleic acid high-carbon alcohol ester and styrene to the molar ratio of acrylate high-carbon alcohol ester is 1:3, vinyl acetate, oleic acid high-carbon alcohol ester The molar ratio of alcohol ester to styrene is 1:1:0.5.

[0020] In this embodiment, the te...

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Abstract

The invention discloses a special solid crude oil paraffin inhibitor for a paraffin controller, and belongs to the technical field of crude oil paraffin inhibitor. The invention solves the technical problems that the existing crude oil paraffin inhibitor is stored in a wellbore, the period of regularly cleaning paraffin is short and the cost of regularly cleaning the paraffin is high. The solid crude oil paraffin inhibitor is prepared from an ionic fluorate type surfactant, an ionic citrate type surfactant, a nonionic citrate ester type surfactant, an organic montmorillonite and a quaternary copolymer by blending and injecting; the quaternary copolymer is prepared from monomeric acrylic acid high-carbon alcohol ester, vinyl acetate, oleic acid high-carbon alcohol ester and styrene by polymerizing. The paraffin inhibiting effect of the solid paraffin inhibitor matched with the paraffin controller is significant; the paraffin precipitation can be effectively inhibited in the process of oil recovery; the period of regularly cleaning the paraffin in the wellbore is greatly reduced; the oil recovery cost is reduced; the safe and stable operation of oil wells is ensured.

Description

technical field [0001] The invention belongs to the technical field of crude oil wax inhibitors; in particular, it relates to a solid crude oil wax inhibitor special for wax inhibitors and a preparation method thereof. Background technique [0002] At present, in order to maintain the normal production of waxed oil wells, the main measures are hot washing, manual and regular addition of anti-wax agent, nylon wax scraper for the lower sucker rod and electric heating, etc., but these methods have certain disadvantages, such as Hot washing of low-pressure leakage wells is equivalent to killing wells, resulting in abnormal production of oil wells. At the same time, it is difficult to fully meet the standard requirements for hot washing cycle, hot water temperature, hot washing water quality and water volume; manual and regular addition of paraffin inhibitors is affected by human factors ; Nylon wax scrapers have been eliminated due to many downhole failures; electric heating tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 荆国林孙征楠袁瑞霞臧世杰
Owner NORTHEAST GASOLINEEUM UNIV
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