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Emulsion antiwax remover

A technology for removing wax and emulsion, which is applied in the direction of drilling compositions, chemical instruments and methods, etc. It can solve the problems of poor wax removal effect and low safety of oil-based wax remover and anti-wax agent, and achieves a less corrosive Effect

Active Publication Date: 2014-07-16
DAQING HUAYING CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor wax removal effect of existing water-based wax removers and low safety of oil-based wax removers, the present invention aims to provide a safe emulsion remover that can prevent wax and remove wax. wax

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] C 5 ~C 9 Cracking fraction 40%, Polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether 8%, fatty acid methyl ester ethoxylate sodium sulfonate 9%, sorbitan monooleate 1.5%, tributyl phosphate 0.5% ester, 41% water balance

[0020] Will C 5 ~C 9 Cracking fraction, polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether, fatty acid methyl ester ethoxylate sodium sulfonate, sorbitan monooleate, and tributyl phosphate are added in proportion to the container and stirred evenly After that, add the remaining amount of water and stir evenly.

Embodiment 2

[0022] C 5 ~C 9 Cracking fraction 50%, Polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether 7.5%, fatty acid methyl ester ethoxylate sodium sulfonate 11%, sorbitan monooleate 3.5%, tributyl phosphate Ester 1% Water 27.5%.

[0023] Will C 5 ~C 9 Cracking fraction, polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether, fatty acid methyl ester ethoxylate sodium sulfonate, sorbitan monooleate, and tributyl phosphate are added in proportion to the container and stirred evenly After that, add the remaining amount of water and stir evenly.

Embodiment 3

[0025] C 5 ~C 9 Cracking fraction 45%, Polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether 5%, fatty acid methyl ester ethoxylate sodium sulfonate 7.5%, sorbitan monooleate 2%, tributyl phosphate Ester 0.8%, water 39.7%.

[0026] Will C 5 ~C 9 Cracking fraction, polyethylene polyamine ethylene oxide propylene oxide polyoxyethylene ether, fatty acid methyl ester ethoxylate sodium sulfonate, sorbitan monooleate, and tributyl phosphate are added in proportion to the container and stirred evenly After that, add the remaining amount of water and stir evenly.

[0027] Example 1 Example 2 Example 3 Density, g / cm 3 0.95 0.90 0.93 Flash point (closed mouth), ℃ 43 41 44 Wax melting rate, g / min·m 2 177 228 204 Wax Resistant Rate,% 54.23 53.68 55.91

[0028] The present invention has achieved following beneficial effect through above-mentioned technical scheme:

[0029] 1. The wax melting rate is greater t...

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Abstract

The invention relates to an emulsion antiwax remover, which comprises polyethylene polyamine ethylene oxide ethylene oxide polyoxyethylene ether, fatty acid methyl ester ethoxylate sodium sulfonate and water, belonging to a paraffin inhibitor. The emulsion antiwax remover comprises the following compounds in percentage by weight: 40-50% of C5-C9 splitting fraction, 5-8% of polyethylene polyamine ethylene oxide epoxypropane polyoxyethylene ether, 7.5-11% of fatty acid methyl ester ethoxylate sodium sulfonate, 1.5-3.5% of sorbitan mo-nooleate, 0.5-1% of tributyl phosphate and 25.5-44.5% of water. The emulsion antiwax remover provided by the invention has the beneficial effects that the wax melting rate is larger than 125g / min.m<2>, and the paraffin controlling rate is larger than 50%; 2, the emulsion antiwax remover has no possibility of burning and exploding during use; the proportion is larger than 0.90, can be added into a crude oil well with high water content through a sleeve, can fall into the bottom hole easily, and can play roles in removing and controlling paraffin; the paraffin removing and controlling agent does not have corrosivity and has small corrosivity on oil extraction equipment.

Description

technical field [0001] The present invention belongs to anti-wax agent, in particular to an emulsion-cleaning anti-wax agent. Background technique [0002] The intrinsic cause of wax deposition in oil wells in Daqing Oilfield is that the crude oil contains wax, and the more wax content, the more severe the wax deposition. Under the condition of the oil layer, the wax is dissolved in the crude oil due to the high temperature of the medium. When the crude oil flows from the oil layer to the bottom of the well, and then rises from the bottom of the well to the wellhead, the solubility of the wax in the crude oil decreases due to the decrease of the pressure and temperature. And precipitated. [0003] Wax deposition in oil wells will affect normal production, so wax removal and prevention in oil wells is also a problem that needs to be solved in oil recovery. The anti-wax technology is to add additives to the oil well to achieve the purpose of removing wax. Anti-wax mechanism...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 孙安顺
Owner DAQING HUAYING CHEM IND
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