CN104099075B - A kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof - Google Patents
A kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof Download PDFInfo
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- CN104099075B CN104099075B CN201310114281.9A CN201310114281A CN104099075B CN 104099075 B CN104099075 B CN 104099075B CN 201310114281 A CN201310114281 A CN 201310114281A CN 104099075 B CN104099075 B CN 104099075B
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- corrosion inhibitor
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- solid corrosion
- oil
- rosin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
Abstract
The present invention relates to a kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof；It is by the Material synthesis of following quality proportioning: modified rosin 47～50%, polyalcohol 15～16.5%, host 31～35%, toughener 1～3%, barium sulfate 1.5～3%, its concrete preparation method is as follows: first synthesis modification rosin: added by rosin in blender jar, adds modifying agent and obtains modified rosin；The preparation of solid corrosion inhibitor: add barium sulfate in the rosin that modification is good, be subsequently added into polyalcohol, be eventually adding liquid host and toughener, pours mould cooling into and is molded to obtain circular solids column finished product；This solid corrosion inhibitor is simple to operate, easy construction, high temperature resistant, and comprehensive corrosion inhibition rate is high, and the inhibition cycle is long, extends the service life of production equipment greatly, reduces production cost, improves operating efficiency.
Description
Technical field
The present invention relates to solid corrosion inhibitor of a kind of Oil/gas Well anticorrosion and preparation method thereof, particularly
A kind of long-acting solid corrosion inhibiter of Oil/gas Well underground equipment high-temperature anticorrosion and preparation method thereof.
Background technology
Construction in each link of petroleum industry, line equipment are carbon steel and low alloy steel casting mostly,
They are often corroded by component each in air, seawater, soil and oil, can be by adding for this
Note corrosion inhibiter reaches the purpose of corrosion control effectively, economically.Currently used corrosion inhibiter is mostly
Organic inhibitor, and organic inhibitor great majority are liquid corrosion inhibitor, liquid corrosion inhibitor has use
Convenient, it is easy to prepare and the series of advantages such as compounding, but the most sudden and the most violent during the use of oil gas field
Expose some shortcomings: (1) filling needs the equipment such as dosing pump, in-convenience in use；(2) at oil pipe
Easily adhering on wall, reagent consumption amount is big, causes unnecessary loss；(3) dosing it is intermittently injecting not
Uniformly, effective protecting time is short；(4) dosing less effective, dosing cost is big；(4) ring is caused
Negative effect in terms of border.Being not enough to of liquid corrosion inhibitor anticorrosion ability existence is added due to above-mentioned
And the complexity of operation, research and development solid corrosion inhibitor necessitates.
In patent CN1594659, raw material proportioning is mainly high carbon number alkylamine surfactant 5～15
%, triethylene tetramine 2～10%, triethanolamine 2～10%, calgon 20～40%, poly-
Ethene 20～50%；In Chinese patent application the 200510090151.1st, raw material proportioning is mainly certain
Binary acid 20～35%, diethylenetriamine 5～15%, monoxone 5～15% and dodecyl
Benzene sulfonic acid sodium salt, hexamethylenetetramine, HPMA, poly-epoxy succinic acid, epoxy resin, polyamide
Resin etc.；In Chinese Patent No. 201110184247, raw material proportioning is mainly stearic acid 4%～8
%, calcium stearate 8%～16%, corrosion inhibiter 38%～44%, surfactant 38%～44%
And microorganism, wherein the quality of microorganism is the 2% of front four kinds of component gross masses；Chinese Patent No.
If raw material is Tianjin fourth, methenamine, thiocarbamide, BTA and table in No. 200910031813
Activating agent compounding crushing, stirring together in face forms, its weight percentage be respectively as follows: 50～80%,
10～20%, 10～20%, 5～10%, 1～5%；The raw material proportioning of the present invention is modified rosin
47～50%, polyalcohol 15～16.5%, host 31～35%, toughener 1～3%, barium sulfate
1.5～3%, compared with above four kinds of solid corrosion inhibitor patents of invention, present component is novel, nontoxic
Environmental protection.
Summary of the invention
It is an object of the invention to provide a kind of be applicable to more than 90 DEG C of high temperature oil gas wells long-acting solid rod
Shape corrosion inhibiter, this corrosion inhibiter is high temperature resistant, corrosion inhibition good, and deenergized period is long, cheap,
High temperature oil gas well anticorrosion aspect, can play more effectively, effect economic, convenient.
Oil/gas Well solid corrosion inhibitor of the present invention is by the Material synthesis of following quality proportioning: change
Property rosin 47～50%, polyalcohol 15～16.5%, host 31～35%, toughener 1～3%,
Barium sulfate 1.5～3%.
Host of the present invention is polyoxyethylene naphthenic acid imidazoline, and modifying agent is polyvinyl alcohol, many
Unit's alcohol is glycerine or pentaerythrite, and toughener is polyvinyl acetate.
The concrete preparation method of long-acting solid corrosion inhibiter of the present invention comprises the steps:
A. the synthesis of modified rosin: rosin is placed in blender jar, heater, limit heating edge
Stirring, when temperature reaches 220 260 DEG C, adds modifying agent, and is stirred continuously, constant temperature 2
4h, closes heater, is cooled to room temperature, obtains modified rosin after question response.
B. the preparation of solid corrosion inhibitor: heater, heats while stirring, when temperature reaches 140
When 170 DEG C, add barium sulfate, constant temperature stirring 30min, be subsequently added into polyalcohol, isothermal reaction
2 4h, are eventually adding liquid host and toughener is warming up to 230 260 DEG C, miscible 30min, fall
Enter mould cooling shaping, get product.
Finished product of the present invention is circular solids column.
The beneficial effects of the present invention is:
The most simple to operate, easy construction: the adding method thereof broken traditions, only need to will be somebody's turn to do during use
Solid corrosion inhibitor vertically puts in Oil/gas Well and (is not suitable for the Oil/gas Well equipped with intercepting sewer), along with
Producing formation water and oily gushing out, the active ingredient of solid corrosion inhibitor slowly discharges with the liquid of flowing,
The slow release molecules discharged is attached to the surface of sleeve pipe, oil pipe, beam hanger, oil well pump etc. and forms protection
Film, effectively slows down CO2 ˉ、HCO3 ˉ、CIˉCorrosion Deng corrosive medium.
2. corrosion inhibiter is high temperature resistant: the softening point of the long-acting solid sustained release agent of the present invention is 99 110 DEG C,
It is applicable to temperature and is more than 90 DEG C of high-temperature oil gas well operations, overcome low softening point solid corrosion inhibitor at height
Temperature oil well melts rapidly, rapidly release inhibition molecule, the problem reducing sustained release efficiency.
3. uniform release inhibition component the most slowly: due to the characteristic of solid corrosion inhibitor high softening-point,
More than in 90 DEG C of high-temperature oil gas well operations, its active ingredient is the most uniform release, releasing of medicament
The cycle of putting can reach about 8 months, consistent with the time between overhauls(TBO) of Oil/gas Well equipment, significantly reduces
Workload, reduces production cost, improves operating efficiency.
4. corrosion inhibition rate is high: the comprehensive corrosion inhibition rate of the present invention can reach more than 80% at 90 DEG C.Protection
Oil/gas Well recovers the oil the phase, adds crude oil tolerance, it is thus achieved that significantly economic effect.
Detailed description of the invention
Embodiment 1
Long-acting solid corrosion inhibiter of the present invention is by the Material synthesis of following quality proportioning: modified rosin
47%, polyalcohol 15%, host 32%, toughener 3%, barium sulfate 3%.
Host of the present invention is polyoxyethylene naphthenic acid imidazoline, and modifying agent is polyvinyl alcohol,
Polyalcohol is glycerine, and toughener is polyvinyl acetate.
The concrete preparation method of solid corrosion inhibitor of the present invention comprises the steps:
A, the synthesis of modified rosin: rosin is placed in blender jar, heater, limit heating edge
Stirring, when temperature reaches 250 DEG C, adds polyvinyl alcohol, and is stirred continuously, constant temperature 2h, treat
Close heater after completion of the reaction, be cooled to room temperature, obtain modified rosin.
B, the preparation of long-acting solid corrosion inhibiter: heater, heat while stirring, when temperature reaches
During to 150 DEG C, add barium sulfate, constant temperature stirring 30min, be subsequently added into glycerine, isothermal reaction
2h, is eventually adding polyoxyethylene naphthenic acid imidazoline and polyvinyl acetate is warming up to 250 DEG C, miscible
30min, pours mould cooling shaping into, gets product.Use in can being directly placed into well.
Embodiment 2
Long-acting solid corrosion inhibiter of the present invention is by the Material synthesis of following quality proportioning: modified rosin
48%, polyalcohol 16.5%, host 33%, toughener 1%, barium sulfate 1.5%.
Host of the present invention is polyoxyethylene naphthenic acid imidazoline, and modifying agent is polyvinyl alcohol,
Polyalcohol is pentaerythrite, and toughener is polyvinyl acetate.
The concrete preparation method of long-acting solid corrosion inhibiter of the present invention comprises the steps:
A, the synthesis of modified rosin: rosin is placed in blender jar, heater, limit heating edge
Stirring, when temperature reaches 260 DEG C, adds polyvinyl alcohol, and is stirred continuously, constant temperature 3h, treat
Close heater after completion of the reaction, be cooled to room temperature, obtain modified rosin.
B, the preparation of long-acting solid corrosion inhibiter: heater, heat while stirring, when temperature reaches
During to 160 DEG C, adding barium sulfate, constant temperature stirring 30min, be subsequently added into pentaerythrite, constant temperature is anti-
Answer 3h, be eventually adding polyoxyethylene naphthenic acid imidazoline and polyvinyl acetate is warming up to 260 DEG C,
Miscible 30min, pours mould cooling shaping into, gets product.Use in can being directly placed into well.
Long-acting solid corrosion inhibiter corrosion inhibition prepared by embodiments of the invention 2 is tested, specifically
Shown in data reference table 1
The corrosion inhibition evaluation of table 1 Different adding amount long-acting solid corrosion inhibiter
As can be seen from Table 1: add the long-acting solid corrosion inhibiter prepared by the present invention, can be at oil
Pipe, sleeve pipe, beam hanger, sucker rod surface form one layer of fine and close diaphragm, effectively reduce corrosion speed
Rate, improves corrosion inhibiter corrosion inhibition rate.
Claims (3)
1. an Oil/gas Well solid corrosion inhibitor, it is characterised in that: it is by the raw material of following quality proportioning
Synthesis: modified rosin 47～50%, polyalcohol 15～16.5%, host 31～35%, toughener 1～
3%, barium sulfate 1.5～3%；
Described host is polyoxyethylene naphthenic acid imidazoline, and modifying agent is polyvinyl alcohol, and polyalcohol is
Glycerine or pentaerythrite, toughener is polyvinyl acetate.
2. the preparation method of the Oil/gas Well solid corrosion inhibitor described in a claim 1, it is characterised in that:
Comprise the steps:
A, the synthesis of modified rosin: rosin is placed in blender jar, heater, limit heating edge
Stirring, when temperature reaches 220 260 DEG C, adds modifying agent, and is stirred continuously, constant temperature 2 4h,
Close heater after question response, be cooled to room temperature, obtain modified rosin；
B, the preparation of solid corrosion inhibitor: heater, heat while stirring, when temperature reaches
When 140 170 DEG C, adding barium sulfate, constant temperature stirring 30min, be subsequently added into polyalcohol, constant temperature is anti-
Answer 2 4h, be eventually adding liquid host and toughener is warming up to 230 260 DEG C, miscible 30min,
Pour mould cooling shaping into, obtain finished product.
The preparation method of Oil/gas Well solid corrosion inhibitor the most according to claim 2, it is characterised in that:
The described finished product with mould cooling shaping is circular solids column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114281.9A CN104099075B (en) | 2013-04-03 | 2013-04-03 | A kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114281.9A CN104099075B (en) | 2013-04-03 | 2013-04-03 | A kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104099075A CN104099075A (en) | 2014-10-15 |
| CN104099075B true CN104099075B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310114281.9A Active CN104099075B (en) | 2013-04-03 | 2013-04-03 | A kind of Oil/gas Well solid corrosion inhibitor and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104480473B (en) * | 2014-11-14 | 2017-02-22 | 华中科技大学 | Solid corrosion inhibitor and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283837C (en) * | 2003-06-27 | 2006-11-08 | 中国石油天然气股份有限公司 | Water-soluble corrosion-retarding neutralizer and its preparation process |
| CN1309868C (en) * | 2005-11-15 | 2007-04-11 | 中国石油天然气集团公司 | High temperature corrosion inhibitor |
| WO2008084503A1 (en) * | 2007-01-12 | 2008-07-17 | Oil And Natural Gas Corporation Limited | Noncarcinogenic corrosion inhibition for oil and gas well completion & packer fluids |
| CN102061157A (en) * | 2011-01-12 | 2011-05-18 | 中国石油集团川庆钻探工程有限公司 | Gas-liquid double-phase corrosion inhibitor for gas well and preparation method thereof |
| CN102942908B (en) * | 2012-11-22 | 2014-08-13 | 中国海洋石油总公司 | Water injected pitting-corrosion composite inhibitor and application thereof |
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