CN100453704C - Solid inhibitor and preparation method thereof - Google Patents
Solid inhibitor and preparation method thereof Download PDFInfo
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- CN100453704C CN100453704C CNB031357741A CN03135774A CN100453704C CN 100453704 C CN100453704 C CN 100453704C CN B031357741 A CNB031357741 A CN B031357741A CN 03135774 A CN03135774 A CN 03135774A CN 100453704 C CN100453704 C CN 100453704C
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- intermediate compound
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Abstract
The present invention discloses a solid corrosion inhibitor for the corrosion prevention of oil well underground facilities and gathering pipelines. The present invention is prepared by the raw materials by weight of 5 to 15% of a surface active agent of high-carbon alkylamine, 2 to 10% of triethylenetetramine, 2 to 10% of trolamine, 20 to 40% of sodium hexametaphosphate and 20 to 50% of polythene. The concrete preparation method comprises the following steps: firstly, an intermediate compound M1 is synthesized by putting and adding the triethylenetetramine into an agitation tank; secondly, an intermediate compound M2 is synthesized by putting the surface active agent of the high-carbon alkylamine into the agitation tank and adding the intermediate compound M1 and the sodium hexametaphosphate; thirdly, the intermediate compound M2 is added into the polythene, and polygon hollow column form finished products are finally obtained by forming through a plastic injection machine. The present invention has the advantages of simplified operation, convenient construction, uniform corrosion prevention, high comprehensive corrosion inhibition rate, greatly prolonged service life of production apparatuses, reduced production cost and improved work efficiency.
Description
Technical field:
The present invention relates to inhibiter of the anticorrosion usefulness in a kind of oil field and preparation method thereof, solid corrosion inhibitor of particularly a kind of oil well down-hole facility and the anticorrosion usefulness of gathering line and preparation method thereof.
Background technology:
In the crude oil production process, local water, S-contained substance and some sour gas be the output with crude oil production also, the CO in the water
3 2-, HCO
3 -, Cl
-Higher Deng corrosive medium content, in addition for improving some chemical that output takes etc., under the comprehensive action of these factors, make down-hole facility and surface pipeline be subjected to serious corrosion, erosion rate reaches 1.0～1.7mm/a, shorten the work-ing life of production unit greatly, increased production cost, influenced production schedule.For reducing corrosion, the traditional way in each oil field is that filling liquid inhibiter carries out anticorrosion, but from actual effect, input-output when working efficiency etc. see all undesirable, mainly have following several respects problem: 1, Jia Zhu liquid inhibiter is taken out of soon with oil, the water of exploitation, this inhibition that has just reduced inhibiter is efficient, shortened the inhibition cycle, increased the energy consumption of inhibiter, anticorrosion cost is improved.2, inhibition is inhomogeneous, and comprehensive corrosion inhibition rate is low.Because inhibiter is periodically filling (generally is filling in 20～30 days once), therefore, at the beginning of the filling inhibiter, corrosion inhibition rate is all very high, along with oil, the output of water, the effective concentration of inhibiter sharply decays, corrosion inhibition rate also sharply reduces, average corrosion inhibition rate has only about 50% (the highest by more than 90%, low can reaching about 20%), and, when corrosion inhibition rate reaches Schwellenwert, pipeline and equipment are in the danger of bearing from uncertain factor, and this just might make it to expose in considerable time or partly be exposed in the corrosive environment, and follow-up anticorrosive work is had a greatly reduced quality.3, filling complex process, filling liquid inhibiter will be employed facilities and equipments such as high pressure syringe pump, pressurized vessel or Vehicle loaded pump, has both had potential safety hazard, has increased other production costs again.
Summary of the invention:
Purpose of the present invention is intended to overcome above-mentioned defective, and solid corrosion inhibitor of a kind of oil well down-hole facility and the anticorrosion usefulness of gathering line and preparation method thereof is provided.This solid corrosion inhibitor can evenly discharge inhibition ingredient lentamente, and deenergized period is long, and filling technology is simple and direct, greatly reduces production cost, has reduced potential safety hazard, has improved working efficiency.
Technical scheme of the present invention is as follows:
Inhibiter of the present invention is formulated by the following weight proportion raw material: high carbon number alkylamine surfactant 5～15%, triethylene tetramine 2～10%, trolamine 2～10%, Sodium hexametaphosphate 99 20～40%, polyethylene 40～50%.
High carbon number alkylamine surfactant of the present invention comprises amino dodecane, cetylamine, stearylamine tensio-active agent.
The concrete preparation method of inhibiter of the present invention comprises the steps:
A, intermediate M
1Synthetic, triethylene tetramine is placed stirred pot, heater heats while stirring, when temperature reaches 140～180 ℃, add trolamine, and constantly stir constant temperature 30 minutes, close well heater after question response finishes, be cooled to room temperature after, promptly get intermediate M
1
B, intermediate M
2Synthetic, high carbon number alkylamine is placed stirred pot, heater heats while stirring, and when temperature reaches 55～65 ℃, adds intermediate M
1, Sodium hexametaphosphate 99 and constantly stirring, after question response finishes, close well heater, be cooled to room temperature after, pulverize this mixture, intermediate M
2
C, with intermediate M
2Stir by thorough mixing in the formula rate adding polyethylene, get product with the injection moulding machine moulding at last.
Finished product of the present invention is the polygon hollow column.
Beneficial effect of the present invention is:
1, simple to operate; easy construction: only need during use this solid corrosion inhibitor is placed in the metal connector; metal connector is connected between pump and the pipeline again; local water and oil pass through metal connector during work; the effective constituent of sustained release dosage slowly discharges with flowing fluid; the inhibition molecule attached is effectively protected at the borehole wall, beam hanger, oil well pump surface filming, slows down CO
3 2-, HCO
3 -, Cl
-Deng the corrosion of corrosive medium to equipment.
2, evenly discharge inhibition ingredient lentamente: the burst size of its effective constituent is 30～40ppm/ days, and can reach 1～1.5 year the deenergized period of medicament, and just the turnaround with oil production equipment is harmonious, alleviated workload greatly, reduce production cost, reduced safe concealing, improved working efficiency.
3, evenly anticorrosion, comprehensive corrosion inhibition rate height: because the burst size of its inhibition molecule is fixed according to the production fluid amount, and corrosive medium is mainly from the production fluid, therefore the inhibition molecule that discharges its every day can suppress fully from the corrosion of the corrosive medium in the production fluid to production facilities, make production facilities at any time all under anticorrosion state, improved the comprehensive corrosion inhibition rate of facility, its comprehensive corrosion inhibition rate average out to 80%.
Description of drawings:
Fig. 1 is the two dimensional structure synoptic diagram of finished product hexagon open column shape body of the present invention
Embodiment:
Embodiment 1
Inhibiter of the present invention is formulated by the following weight proportion raw material: high carbon number alkylamine surfactant 5%, triethylene tetramine 10%, trolamine 10%, Sodium hexametaphosphate 99 35%, polyethylene 40%.
High carbon number alkylamine surfactant of the present invention is meant the cetylamine tensio-active agent.
The concrete preparation method of inhibiter of the present invention comprises the steps:
A, intermediate M
1Synthetic, triethylene tetramine is placed stirred pot, heater heats while stirring, and when temperature reaches 160 ℃, adds trolamine, and constantly stirs, constant temperature 30 minutes is closed well heater after question response finishes, be cooled to room temperature after, promptly get intermediate M
1
B, intermediate M
2Synthetic, the cetylamine tensio-active agent is placed stirred pot, heater heats while stirring, and when temperature reaches 60 ℃, adds intermediate M
1, Sodium hexametaphosphate 99 and constantly stirring, after question response finishes, close well heater, be cooled to room temperature after, pulverize this mixture, intermediate M
2
C, with intermediate M
2Stir by thorough mixing in the formula rate adding polyethylene, get product with the injection moulding machine moulding at last.
Finished product of the present invention is a hexagon open column shape body.
Embodiment 2
Inhibiter of the present invention is formulated by the following weight proportion raw material: high carbon number alkylamine surfactant 15%, triethylene tetramine 5%, trolamine 8%, Sodium hexametaphosphate 99 30%, polyethylene 42%.
High carbon number alkylamine surfactant of the present invention is meant the stearylamine tensio-active agent.
The concrete preparation method of inhibiter of the present invention comprises the steps:
A, intermediate M
1Synthetic, triethylene tetramine is placed stirred pot, heater heats while stirring, and when temperature reaches 150 ℃, adds trolamine, and constantly stirs, constant temperature 30 minutes is closed well heater after question response finishes, be cooled to room temperature after, promptly get intermediate M
1
B, intermediate M
2Synthetic, the stearylamine tensio-active agent is placed stirred pot, heater heats while stirring, and when temperature reaches 55 ℃, adds intermediate M
1, Sodium hexametaphosphate 99 and constantly stirring, after question response finishes, close well heater, be cooled to room temperature after, pulverize this mixture, intermediate M
2
C, with intermediate M
2Stir by thorough mixing in the formula rate adding polyethylene, get product with the injection moulding machine moulding at last.
Finished product of the present invention is a pentagon open column shape body.
The present invention is simple to operate, easy construction, anticorrosion evenly, comprehensive corrosion inhibition rate height has greatly prolonged work-ing life of production unit, has reduced production cost, has improved working efficiency.
Claims (5)
1, solid corrosion inhibitor is characterized in that it is formulated by the following weight proportion raw material: high carbon number alkylamine surfactant 5～15%, triethylene tetramine 2～10%, trolamine 2～10%, Sodium hexametaphosphate 99 20～40%, polyethylene 40～50%.
2, solid corrosion inhibitor according to claim 1 is characterized in that: described high carbon number alkylamine surfactant comprises amino dodecane, cetylamine, stearylamine tensio-active agent.
3, the preparation method of solid corrosion inhibitor according to claim 1 is characterized in that comprising the steps:
A, intermediate M
1Synthetic, triethylene tetramine is placed stirred pot, heater heats while stirring, when temperature reaches 140～180 ℃, add trolamine, and constantly stir constant temperature 30 minutes, close well heater after question response finishes, be cooled to room temperature after, promptly get intermediate M
1
B, intermediate M
2Synthetic, high carbon number alkylamine is placed stirred pot, heater heats while stirring, and when temperature reaches 55～65 ℃, adds intermediate M
1, Sodium hexametaphosphate 99 and constantly stirring, after question response finishes, close well heater, be cooled to room temperature after, pulverize this mixture, intermediate M
2
C, with intermediate M
2Stir by thorough mixing in the formula rate adding polyethylene, get product with the injection moulding machine moulding at last.
4, the preparation method of solid corrosion inhibitor according to claim 3 is characterized in that: described finished product with the injection moulding machine moulding is the polygon hollow column.
5, according to the preparation method of claim 3 or 4 described solid corrosion inhibitors, it is characterized in that: described finished product with the injection moulding machine moulding is a hexagon open column shape body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031357741A CN100453704C (en) | 2003-09-08 | 2003-09-08 | Solid inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031357741A CN100453704C (en) | 2003-09-08 | 2003-09-08 | Solid inhibitor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594659A CN1594659A (en) | 2005-03-16 |
| CN100453704C true CN100453704C (en) | 2009-01-21 |
Family
ID=34659212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031357741A Expired - Fee Related CN100453704C (en) | 2003-09-08 | 2003-09-08 | Solid inhibitor and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139718B (en) * | 2006-09-04 | 2010-10-13 | 中国石油集团川庆钻探工程有限公司 | Multiple-effect solid inhibiting anti-scale rod |
| CN109972146B (en) * | 2019-05-24 | 2021-05-18 | 上海贵通新材料科技有限公司 | Reforming corrosion inhibitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3531409A (en) * | 1967-01-06 | 1970-09-29 | Petrolite Corp | Solid solutions of corrosion inhibitors for use in treating oil wells |
| CN1052151A (en) * | 1989-11-21 | 1991-06-12 | 天津市化学试剂五厂 | 17 alkenyl imidazoline corrosion inhibitor for oil field |
| CN1163301A (en) * | 1996-04-24 | 1997-10-29 | 胜利石油管理局勘察设计研究院 | Acidifying corrosion inhibitor for oil well and its preparation |
| CN1277240A (en) * | 2000-06-21 | 2000-12-20 | 中国石油天然气总公司石油管材研究所 | Corrosion inhibitor resisting CO2 corrosion for oil field |
-
2003
- 2003-09-08 CN CNB031357741A patent/CN100453704C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3531409A (en) * | 1967-01-06 | 1970-09-29 | Petrolite Corp | Solid solutions of corrosion inhibitors for use in treating oil wells |
| CN1052151A (en) * | 1989-11-21 | 1991-06-12 | 天津市化学试剂五厂 | 17 alkenyl imidazoline corrosion inhibitor for oil field |
| CN1163301A (en) * | 1996-04-24 | 1997-10-29 | 胜利石油管理局勘察设计研究院 | Acidifying corrosion inhibitor for oil well and its preparation |
| CN1277240A (en) * | 2000-06-21 | 2000-12-20 | 中国石油天然气总公司石油管材研究所 | Corrosion inhibitor resisting CO2 corrosion for oil field |
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| Publication number | Publication date |
|---|---|
| CN1594659A (en) | 2005-03-16 |
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