Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oil production well neutral plugging remover composition and preparation method thereof

A technology for oil production wells and plugging removers, which is applied in the preparation of neutral plugging remover compositions for oil production wells in oil fields, and in the field of neutral plugging remover compositions for oil production wells, which can solve the problem of clogging of formation pores, oil wells and pumps, and wellbore operation Environmental degradation, corrosion and other problems, to achieve fast plugging speed, fast chemical descaling speed, good wettability and stability

Active Publication Date: 2017-06-16
兰州熙瑞化工科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) Harmful ions injected into oilfield formations, such as anions and scale-forming cations, will cause scaling and corrosion in water injection wells, oil production wells and oil production pumps. Scale and corrosion products can easily cause formation pores and clogging of oil wells and pumps
[0008] (4) The injected clean water and re-injected sewage are mostly two types of water that are incompatible with each other. The mixed use of incompatible water will result in more serious scaling, and will also generate corrosion under the scale to produce corrosion dirt
[0009] (5) Harmful bacteria contained in water, such as sulfuric acid reducing bacteria, iron bacteria, etc., can cause bacterial corrosion and produce scales of bacterial corrosion products.
[0010] (6) The oil production in the oil field has entered the stage of high water cut development. ASP flooding is one of the important technologies to ensure continuous and stable production. Rod lagging, rod breaking, pump stuck and stuck often occur on site, seriously affecting the normal oil production of oil production wells
[0011] At present, acidification is mainly used to remove plugging. Acidification and plugging removal are prone to produce scale residue and secondary sediment, resulting in secondary blockage of production wells and stuck oil pumps; Improper and other factors cause corrosion to oil production equipment, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1, take raw material by following components and weight: polyepoxysuccinamide 11Kg, ethylenedienetriaminepentaacetate amine 38Kg, hydroxysuccinamide 36Kg, polyacrylamine 21Kg, polyaspartic acid Sodium 9Kg, sodium gluconate 10Kg, activated clay 14Kg, potassium persulfate 23Kg, hydroxysuccinate amine 10Kg, sodium salicylate 5Kg, hexamethylenetetramine 7Kg, vanadium pentoxide 0.3Kg, starch 4Kg, α - Sulfonic acid monocarboxylic acid and its derivatives (MES) 6Kg and diethylethanol 0.3Kg.

[0058] The raw materials of the above-mentioned parts by weight are prepared according to the following preparation method into a neutral plug-removing agent composition for oil production wells in oil fields:

[0059] 1. Crush polyepoxysuccinate, ethylenedienetriaminepentaacetate, hydroxysuccinate, polyacrylamide, polyaspartate sodium, sodium gluconate and activated clay with a grinder and pass through 20 Mesh sieve, stirred until uniform, the first powder was obtained; the f...

Embodiment 2

[0064] Embodiment 2, take raw material by following components and weight: polyepoxysuccinamide 14Kg, ethylenedienetriaminepentaacetate amine 35Kg, hydroxysuccinamide 33Kg, polyacrylic acid amine 23Kg, polyaspartic acid Sodium 10Kg, sodium gluconate 13Kg, activated clay 13Kg, potassium persulfate 25Kg, hydroxysuccinate amine 9Kg, sodium salicylate 6Kg, hexamethylenetetramine 9Kg, vanadium pentoxide 0.25Kg, starch 3Kg, α - Sulfonic acid monocarboxylic acid and its derivatives (MES) 7Kg and diethylethanol 0.2Kg.

[0065] The raw materials of the above-mentioned parts by weight are prepared according to the following preparation method into a neutral plug-removing agent composition for oil production wells in oil fields:

[0066] 1, with embodiment 1;

[0067] 2, with embodiment 1;

[0068] 3, with the starch of vanadium pentoxide and 1kg, use conical mixing mixer to evenly, all the same with embodiment 1;

[0069] 4, the starch of 2kg, α-sulfonic acid monocarboxylic acid and ...

Embodiment 3

[0071] Embodiment 3, take raw material by following components and weight: polyepoxysuccinamide 10Kg, ethylenedienetriamine pentaacetate amine 36Kg, hydroxysuccinamide 35Kg, polyacrylamide 20Kg, polyaspartic acid Sodium 8Kg, sodium gluconate 14Kg, activated clay 15Kg, potassium persulfate 20Kg, amine hydroxysuccinate 11Kg, sodium salicylate 4Kg, hexamethylenetetramine 6Kg, vanadium pentoxide 0.2Kg, starch 2Kg, α - Sulfonic acid monocarboxylic acid and its derivatives (MES) 5Kg and diethylethanol 0.15Kg.

[0072] The raw materials of the above-mentioned parts by weight are prepared according to the following preparation method into a neutral plug-removing agent composition for oil production wells in oil fields:

[0073] 1, with embodiment 1;

[0074] 2, with embodiment 1;

[0075] 3, with the starch of vanadium pentoxide and 1kg, use conical mixing mixer to evenly, all the same with embodiment 1;

[0076] 4, with the starch of 1kg, α-sulfonic acid monocarboxylic acid and de...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a neutral blockage removing agent composition used for an oil recovery formation in an oilfield. The neutral blockage removing agent composition is prepared from the following raw materials in parts by weight: 10-14 parts of polyepoxysuccinic acid amine, 35-40 parts of diethylenetriaminepentaacetic acid amine, 33-37 parts of hydroxyl succinic acid amine, 20-25 parts of polyacrylamide, 7-10 parts of sodium polyaspartate, 10-14 parts of sodium gluconate, 10-15 parts of activated clay, 20-25 parts of potassium peroxodisulfate, 9-11 parts of hydroxyl butanedioic acid amine, 4-7 parts of sodium salicylate, 5-9 parts of hexamethylene tetramine, 0.2-0.3 part of vanadium pentoxide, 2-5 parts of starch, 5-8 parts of alpha-sulphonated fatty acid methyl ester and derivative thereof (MES) and 0.1-0.3 part ofdiethyl ethanolamine. The neutral blockage removing agent composition is used for the blockage removal of an oil pumping well and a screw pump well in the oilfield, can effectively solve the problems of cleaning blockage removal of the oil pumping well and the screw pump well in the oilfield and the corrosion of oil recovery equipment, has high blockage removing speed, is neutral and is free of corrosion; waste liquid for blockage removal can be degraded and does not need to be discharged onto the ground to be subjected to sewage treatment, no corrosion, dead angle, precipitation or secondary well blockage are generated, and more safety and more reliability are realized as compared with traditional pickling blockage removing, biological blockage removing and solvent blockage removing.

Description

technical field [0001] The invention relates to an auxiliary agent used in oil production in oil fields, in particular to a neutral block-removing agent composition for oil production wells in oil fields, and also relates to a preparation method for the neutral plug-removing agent composition for oil production wells in oil fields. Background technique [0002] Formation water in oilfields forms scales due to changes in temperature, pressure and other conditions, which makes the corrosion and scaling of water injection development oil production systems and gathering and transportation system equipment more and more serious with the production age. In some oilfields, oil production wells and oil pumps have scaling and clogging Oil production wells and pipelines are scrapped due to corrosion and perforation. Therefore, the problem of corrosion and scaling of oil production wells and pumps has been paid more and more attention by people. [0003] Through X-ray diffraction, mo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/524C09K8/528
CPCC09K8/524C09K8/528
Inventor 刘音希赵丽萍
Owner 兰州熙瑞化工科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products