CN107605436A - It is applicable the suppression oxygen corrosion devices and methods therefor of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology - Google Patents
It is applicable the suppression oxygen corrosion devices and methods therefor of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology Download PDFInfo
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- CN107605436A CN107605436A CN201710978159.4A CN201710978159A CN107605436A CN 107605436 A CN107605436 A CN 107605436A CN 201710978159 A CN201710978159 A CN 201710978159A CN 107605436 A CN107605436 A CN 107605436A
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Abstract
The invention discloses a kind of suppression oxygen corrosion devices and methods therefor for being applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology, including the first blender, the second blender, the first pharmacy jar, the first compound pump, multielement hot fluid generator, second medicament tank and second medicament pump；First pharmacy jar is connected by the first compound pump with the inlet of the first blender, the gas outlet of multielement hot fluid generator is connected with the air inlet of the first blender, the outlet of first blender is connected with the import of the second blender, second medicament tank is connected by second medicament pump with the inlet of the second blender, and the outlet of the second blender is connected with oil well.The suppression oxygen corrosion device and method of the present invention can effectively suppress the oxygen corrosion of heat injection tubing string, and and can prevents other sour gas such as CO in multielement hot fluid2、SO2、SO3It is a kind of comprehensive anti-corrosive apparatus and anti-corrosion method Deng the corrosion to the other instruments of heat injection tubing string and underground.
Description
Technical field
The invention belongs to oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technical field, and in particular to a kind of applicable oxygen-enriched combustion-supporting viscous crude
The suppression oxygen corrosion devices and methods therefor of well injection thermal recovery technology.
Background technology
In recent years, thermal recovery technology is applied and promoted with ocean viscous crude field by land, especially multielement hot fluid
Handle up and improve recovery efficiency technique, oil field and offshore oilfield have carried out the Mining Test of more wells time, and application rule by land
Mould constantly expands.But down-hole string and instrument are found during popularization and application there occurs different degrees of corrosion, especially
It is the oily tube steel commonly used in heavy crude reservoir multielement hot fluid thermal recovery technology, i.e. P110 steel causes there occurs serious corrosion
Very big economic loss.
Multielement hot fluid be by diesel oil, crude oil or natural gas with after air burning and water mix and will water heating or vaporization after
Multicomponent mixture fluid, mainly including N2、CO2, hot water, the component such as steam receive either during steam soak with note is artificial
Collection or the flue gas prepared, CO2Or N2, so as to form multielement hot fluid.And in actual use, with working condition
It is required that in order to improve multielement hot fluid heat enthalpy value and avoid the generation of carbon distribution problem in combustion process, multielement hot fluid technology
Progressively develop towards oxygen-enriched combustion-supporting even pure oxygen burning direction, but these oxygen enrichment technologies are during practical application, due to
Oxygen-enriched combusting, the residual hyperoxia after burning, excessive residual oxygen easily causes potential safety hazard, while can also accelerate the corruption of oil recovery oil pipe
Erosion.
It is exactly at most imidazoles corrosion inhibiter to be applied in current oil field corrosion protection, such as season hinge salt modified imidazoline, phthalein amine
Base imidazoline, sulphur arteries and veins base imidazoline etc..Such as Chinese invention patent (Authorization Notice No. CN102606111B, authorized announcement date
2015.3.18 a kind of method that tube corrosion is prevented in multielement hot fluid thermal recovery technology) is disclosed, this method mainly uses
Imidazoles corrosion inhibiter suppresses the corrosion of tubing string.This method is burnt polynary primarily directed to regular air as combustion air
Hot fluid process system, and imidazoles corrosion inhibiter mainly suppresses CO2Corrosion, for oxygen-enriched combusting and pure oxygen burning high concentration oxygen
The residual oxygen of caused high concentration under gas burning condition can only play a certain degree of physical isolation effect, and can not fundamentally press down
The generation of oxygen corrosion processed.
The content of the invention
A kind of deficiency of the purpose of the present invention aiming at above-mentioned technology, there is provided applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery
The suppression oxygen corrosion devices and methods therefor of technique, can suppress oxygen corrosion, and and can prevents multielement hot fluid to heat injection oil pipe and well
Under other instruments corrosion.
To achieve the above object, the suppression oxygen for being applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology designed by the present invention is rotten
Lose device, including the first blender, the second blender, the first pharmacy jar, the first compound pump, multielement hot fluid generator, second
Pharmacy jar and second medicament pump；First pharmacy jar passes through the inlet phase of first compound pump and first blender
Even, the gas outlet of the multielement hot fluid generator is connected with the air inlet of first blender, first blender
Outlet is connected with the import of second blender, and the second medicament tank mixes by the second medicament pump with described second
The inlet of device is connected, and the outlet of second blender is connected with oil well.
Further, first pharmacy jar is to add the pharmacy jar that corrosion inhibiter stoste a is DMKO.
Further, the second medicament tank is to add the pharmacy jar that corrosion inhibiter stoste b is imidazoline corrosion inhibitor.
A kind of application method of the suppression oxygen corrosion device described above for being applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology,
Comprise the following steps：
1) corrosion inhibiter stoste a is filled into be configured in the first pharmacy jar mass ratio be 5~20% corrosion inhibiter a solution,
Corrosion inhibiter stoste b is filled into the corrosion inhibiter b solution for being configured to that mass percent is 5~20% in second medicament tank；
2) multielement hot fluid generator is started, when the temperature of multielement hot fluid caused by first heated fluid generator is higher than 150
DEG C, the injection rate of multielement hot fluid is when reaching 1~2t/h, corrosion inhibiter a solution is passed through into the mixing of the first compound pump injection first
In device, and by the second blender injection string after being mixed in the first blender with multielement hot fluid, corrosion inhibiter a solution
Injection rate is 0.1~0.5t/h, after tubing string is full of corrosion inhibiter a solution, carries out vexed well 5~10 hours for the first time；
3) after vexed well terminates for the first time, multielement hot fluid generator is again started up, when caused by multielement hot fluid generator
When the temperature of multielement hot fluid is higher than 150 DEG C, 1~2t/h of injection rate of multielement hot fluid, corrosion inhibiter b solution is passed through second
Compound pump is injected in the second blender, and is injected in the second blender with after the multielement hot fluid of the first blender mixes
In tubing string, 0.1~0.5t/h of injection rate of corrosion inhibiter b solution, after tubing string is full of corrosion inhibiter b solution, carry out vexed for the second time
Well 5~10 hours；
4) twice after vexed well end-of-job, start formal heat injection, start multielement hot fluid generator, when multielement hot fluid temperature
When degree reaches 250~350 DEG C, while the first compound pump of startup and second medicament pump, corrosion inhibiter a solution pass through the first medicament infusion
After entering the first blender, then the second blender is injected after being mixed with multielement hot fluid, while corrosion inhibiter b solution passes through second medicament
Infusion enters the second blender, and multielement hot fluid is mixed into corrosion inhibiter a solution and corrosion inhibiter b solution in the second blender
200~1000ppm corrosion inhibitor solution.
Further, the corrosion inhibiter stoste a is DMKO.
Further, the corrosion inhibiter stoste b is imidazoline corrosion inhibitor.
Further, in the step 1), corrosion inhibiter stoste a is configured to the corrosion inhibiter that mass percent is 10~15%
A solution, corrosion inhibiter stoste b is configured to the corrosion inhibiter b solution that mass percent is 10~15%.
Further, in the step 2), the injection rate of corrosion inhibiter a solution is 0.2~0.4t/h, is full of tubing string
After corrosion inhibiter a solution, vexed well 6~8 hours for the first time are carried out.
Further, in the step 3), 0.2~0.4t/h of injection rate of corrosion inhibiter b solution, tubing string is made to be full of inhibition
After agent b solution, vexed well 6~8 hours for the second time are carried out.
Further, in the step 4), when multielement hot fluid temperature reaches 260~300 DEG C, while the first medicine is started
Agent pump and second medicament pump；Also, finally multielement hot fluid and corrosion inhibiter a solution and corrosion inhibiter b solution in the second blender
It is mixed into 400~700ppm corrosion inhibitor solution.
Compared with prior art, the present invention has advantages below：The suppression oxygen corrosion device and method of the present invention can have
Effect ground suppresses the oxygen corrosion of heat injection tubing string, and and can prevents other sour gas such as CO in multielement hot fluid2、SO2、SO3Deng to heat injection
The corrosion of the other instruments of tubing string and underground, it is a kind of comprehensive anti-corrosive apparatus and anti-corrosion method.
Brief description of the drawings
Fig. 1 is the suppression oxygen corrosion device schematic flow sheet that the present invention is applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology.
Each part numbers are as follows in figure：First pharmacy jar 1, the first compound pump 2, multielement hot fluid generator 3, first mix
Device 4, the second blender 5, second medicament tank 6, second medicament pump 7.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
It is a kind of suppression oxygen corrosion device for being applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology as shown in Figure 1, including the
One blender 4, the second blender 5, the first pharmacy jar 1, the first compound pump 2, multielement hot fluid generator 3, the and of second medicament tank 6
Second medicament pump 7；First pharmacy jar 1 is connected by the first compound pump 2 with the inlet of the first blender 4, multielement hot fluid hair
The gas outlet of raw device 3 is connected with the air inlet of the first blender 4, the outlet of the first blender 4 and the import phase of the second blender 5
Even, second medicament tank 6 is connected by second medicament pump 7 with the inlet of the second blender 5, outlet and the oil of the second blender 5
Well is connected.
The anti-corrosion of the present invention is illustrated by taking the land thick oil thermal extraction of a bite positioned at the oil field of hundred weight of Karamay, Xinjiang 7 as an example
Method and principle.The well is that a bite newly bores thermal production well, and well material is P110 steel.Multielement hot fluid implantation temperature is 260 DEG C, polynary
Hot fluid injection rate is 5000 tons.Well well depth 1000m.
It is 10~15% (corrosion inhibiter that first corrosion inhibiter stoste a, which is filled into the first pharmacy jar 1, and is configured to mass percent
The weight of stoste a and water ratio) corrosion inhibiter a solution, corrosion inhibiter stoste b be filled into second medicament tank 6 be configured to quality hundred
Divide than the corrosion inhibiter b solution for 10~15% (weight of corrosion inhibiter stoste b and water ratios)；Start multielement hot fluid generator 3, when
The temperature of multielement hot fluid caused by first heated fluid generator 3 reaches 1~2t/ higher than 150 DEG C, the injection rate of multielement hot fluid
During h, corrosion inhibiter a solution is injected in the first blender 4 by the first compound pump 2, and in the first blender 4 with polynary hot-fluid
By in the injection string of the second blender 5, the injection rate of corrosion inhibiter a solution is 0.2~0.4t/h, fills tubing string after body mixing
After full corrosion inhibiter a solution, vexed well 6~8 hours for the first time are carried out, are not injected into corrosion inhibiter b solution during vexed well for the first time.
After vexed well terminates for the first time, multielement hot fluid generator 3 is again started up, when caused by multielement hot fluid generator 3
When the temperature of multielement hot fluid is higher than 150 DEG C, 1~2t/h of injection rate of multielement hot fluid, corrosion inhibiter b solution is passed through second
Compound pump 7 is injected in the second blender 5, and is mixed in the second blender 5 with by the multielement hot fluid of the first blender 4
Afterwards in injection string, 0.2~0.4t/h of injection rate of corrosion inhibiter b solution, after tubing string is full of corrosion inhibiter b solution, the is carried out
Secondary vexed well 6~8 hours, it is not injected into corrosion inhibiter a solution during vexed well for the second time；
Twice after vexed well end-of-job, start formal heat injection, start multielement hot fluid generator 3, when multielement hot fluid temperature
When degree reaches 260~300 DEG C, while the first compound pump 2 of startup and second medicament pump 7, corrosion inhibiter a solution pass through the first compound pump
After 2 the first blenders 4 of injection, then the second blender 5 is injected after mix with multielement hot fluid, while corrosion inhibiter b solution passes through the
Two compound pumps 7 inject the second blender 5, and multielement hot fluid and corrosion inhibiter a solution and corrosion inhibiter b are molten in the second blender 5
Liquid is mixed into 400~700ppm corrosion inhibitor solution.
After vexed well terminates for the first time, one layer of magnetic oxide diaphragm is formed on the tube wall of tubing string, completely cuts off metal and oxygen
The contact of gas composition.Corrosion inhibiter a solution used in vexed well is DMKO, also known as acetoxime for the first time in the present invention, normal temperature
It is white flaky crystals down, fusing point：It is 60~61 DEG C, water-soluble：320g/l (21 DEG C), soluble in water, alcohol, ether, ketone, hydrocarbon, oil
The organic solvents such as ether, had stronger with New-type boiler water oxygen scavenger prepared by condensation reaction with azanol and carbonyls
Reproducibility, the dissolved oxygen in water can be quickly reduced, good magnetic oxide diaphragm, anti-block are formed in metal steel surface
Corrosion, and play a part of inhibition and passivation to metal surface, and with dosage it is few, it is nontoxic, discharge it is pollution-free etc. a little.
After second of vexed well terminates, one layer of pre- film of imidazoles class corrosion inhibiter is formed on the tube wall of tubing string, more further
Avoid contact of the tube wall with multielement hot fluid sour gas.Used corrosion inhibiter b solution is that this area is normal during second of vexed well
Imidazoles class corrosion inhibiter, such as season are by salt modified imidazoline, phthalein amido imidazoline, sulphur arteries and veins base imidazoline.
After formal heat injection work starts, while corrosion inhibiter a solution and corrosion inhibiter b solution are injected, can be during heat injection
The remnant oxygen in multielement hot fluid caused by oxygen-enriched combusting, and deleterious acidic gas are consumed, and further as inhibition
Agent a solution and corrosion inhibiter b solution, which persistently inject, can keep metal magnetic oxide film and the pre- film of corrosion inhibiter on tube wall
Integrality, further reduce corrosion of metal on tube wall.The present invention not only can effectively suppress the oxygen corrosion of heat injection tubing string, and
And other sour gas such as CO can also be suppressed2、SO2、SO3It is a kind of comprehensive Deng the corrosion to heat injection oil pipe and other instruments of underground
Close sexual system anti-corrosive apparatus and anti-corrosion method.
After thermal recovery terminates, act the heat-proof string entire body and do not find obvious corruption, and do not take the oil well of this method, thermal recovery is put
Corrode tight, the box cuplings of some heat-proof strings corrosion failure after spray at heat-proof string box cupling；And enter only with a kind of corrosion inhibiter
Row thermal recovery, thermal recovery still has a certain degree of corrosion after terminating, and as the growth of thermal recovery time, corrosion condition are tighter
Weight.Therefore, illustrate that the present invention fully meets the oxygen-enriched combustion-supporting multielement hot fluid thermal recovery technology requirement for anticorrosion under hot conditions.
Claims (10)
- A kind of 1. suppression oxygen corrosion device for being applicable oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology, it is characterised in that：Including first Blender (4), the second blender (5), the first pharmacy jar (1), the first compound pump (2), multielement hot fluid generator (3), second Pharmacy jar (6) and second medicament pump (7)；First pharmacy jar (1) mixes by first compound pump (2) with described first The inlet of device (4) is connected, the gas outlet of the multielement hot fluid generator (3) and the air inlet of first blender (4) It is connected, the outlet of first blender (4) is connected with the import of second blender (5), second medicament tank (6) warp The inlet that the second medicament pump (7) is crossed with second blender (5) is connected, the outlet of second blender (5) with Oil well is connected.
- 2. the suppression oxygen corrosion device of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology, its feature are applicable according to claim 1 It is：First pharmacy jar (1) is to add the pharmacy jar that corrosion inhibiter stoste a is DMKO.
- 3. the suppression oxygen corrosion device of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology, its feature are applicable according to claim 1 It is：The second medicament tank (6) is to add the pharmacy jar that corrosion inhibiter stoste b is imidazoline corrosion inhibitor.
- 4. the user of the suppression oxygen corrosion device of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology is applicable described in a kind of claim 1 Method, it is characterised in that：Comprise the following steps：1) corrosion inhibiter stoste a is filled into the corrosion inhibiter a solution, general for being configured to that mass ratio is 5~20% in the first pharmacy jar (1) Corrosion inhibiter stoste b is filled into the corrosion inhibiter b solution for being configured to that mass percent is 5~20% in second medicament tank (6)；2) multielement hot fluid generator (3) is started, when the temperature of multielement hot fluid caused by first heated fluid generator (3) is higher than 150 DEG C, the injection rate of multielement hot fluid is when reaching 1~2t/h, corrosion inhibiter a solution is passed through into the first compound pump (2) injection the In one blender (4), and by the second blender (5) injection string after being mixed in the first blender (4) with multielement hot fluid In, the injection rate of corrosion inhibiter a solution is 0.1~0.5t/h, after tubing string is full of corrosion inhibiter a solution, carries out vexed well 5 for the first time ~10 hours；3) after vexed well terminates for the first time, multielement hot fluid generator (3) is again started up, when multielement hot fluid generator (3) produces Multielement hot fluid temperature higher than 150 DEG C, 1~2t/h of injection rate of multielement hot fluid when, corrosion inhibiter b solution is passed through the Two compound pumps (7) are injected in the second blender (5), and the polynary heat in the second blender (5) with the first blender of process (4) After fluid mixing in injection string, 0.1~0.5t/h of injection rate of corrosion inhibiter b solution, tubing string is set to be full of corrosion inhibiter b solution Afterwards, vexed well 5~10 hours for the second time are carried out；4) twice after vexed well end-of-job, start formal heat injection, start multielement hot fluid generator (3), when multielement hot fluid temperature When degree reaches 250~350 DEG C, while the first compound pump of startup (2) and second medicament pump (7), corrosion inhibiter a solution pass through the first medicine After agent pump (2) injects the first blender (4), then the second blender (5) is injected after being mixed with multielement hot fluid, while corrosion inhibiter b Solution injects the second blender (5), and multielement hot fluid and corrosion inhibiter a in the second blender (5) by second medicament pump (7) Solution and corrosion inhibiter b solution are mixed into 200~1000ppm corrosion inhibitor solution.
- 5. the user for suppressing oxygen corrosion device suitable for oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to claim 4 Method, it is characterised in that：The corrosion inhibiter stoste a is DMKO.
- 6. the user for suppressing oxygen corrosion device suitable for oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to claim 4 Method, it is characterised in that：The corrosion inhibiter stoste b is imidazoline corrosion inhibitor.
- 7. it is suitable to the suppression oxygen corrosion of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to any one of claim 4~6 The application method of device, it is characterised in that：In the step 1), by corrosion inhibiter stoste a be configured to mass percent for 10~ 15% corrosion inhibiter a solution, corrosion inhibiter stoste b is configured to the corrosion inhibiter b solution that mass percent is 10~15%.
- 8. it is suitable to the suppression oxygen corrosion of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to any one of claim 4~6 The application method of device, it is characterised in that：In the step 2), the injection rate of corrosion inhibiter a solution is 0.2~0.4t/h, is made After tubing string is full of corrosion inhibiter a solution, vexed well 6~8 hours for the first time are carried out.
- 9. it is suitable to the suppression oxygen corrosion of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to any one of claim 4~6 The application method of device, it is characterised in that：In the step 3), 0.2~0.4t/h of injection rate of corrosion inhibiter b solution, make pipe After post is full of corrosion inhibiter b solution, vexed well 6~8 hours for the second time are carried out.
- 10. it is suitable to the suppression oxygen corrosion of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology according to any one of claim 4~6 The application method of device, it is characterised in that：In the step 4), when multielement hot fluid temperature reaches 260~300 DEG C, simultaneously Start the first compound pump (2) and second medicament pump (7)；Also, finally multielement hot fluid and corrosion inhibiter in the second blender (5) A solution and corrosion inhibiter b solution are mixed into 400~700ppm corrosion inhibitor solution.
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| CN201710978159.4A CN107605436A (en) | 2017-10-18 | 2017-10-18 | It is applicable the suppression oxygen corrosion devices and methods therefor of oxygen-enriched combustion-supporting heavy oil wells injection thermal recovery technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756840A (en) * | 2018-07-03 | 2018-11-06 | 武汉索克能源科技有限公司 | A kind of fluid pulse oil extraction system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928075A (en) * | 2010-08-30 | 2010-12-29 | 蓝星环境工程有限公司 | Closed-type circulating cooling water system inhibiter and preparation method thereof |
| CN102606111A (en) * | 2012-03-09 | 2012-07-25 | 中国海洋石油总公司 | Method for preventing tubular column from corrosion in multi-element heat fluid thermal recovery process |
| CN103508570A (en) * | 2012-06-25 | 2014-01-15 | 上海思曼泰化工科技有限公司 | Environmental protection and high efficiency corrosion inhibitor for inhibiting salt water corrosion on carbon steel, preparation method and use method thereof |
| CN106222677A (en) * | 2016-09-30 | 2016-12-14 | 内江师范学院 | A kind of pyrazolone compounds is as the application of restrainer |
| CN106520101A (en) * | 2016-09-18 | 2017-03-22 | 中国石油天然气股份有限公司 | Annular protecting fluid and preparation method thereof |
-
2017
- 2017-10-18 CN CN201710978159.4A patent/CN107605436A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928075A (en) * | 2010-08-30 | 2010-12-29 | 蓝星环境工程有限公司 | Closed-type circulating cooling water system inhibiter and preparation method thereof |
| CN102606111A (en) * | 2012-03-09 | 2012-07-25 | 中国海洋石油总公司 | Method for preventing tubular column from corrosion in multi-element heat fluid thermal recovery process |
| CN103508570A (en) * | 2012-06-25 | 2014-01-15 | 上海思曼泰化工科技有限公司 | Environmental protection and high efficiency corrosion inhibitor for inhibiting salt water corrosion on carbon steel, preparation method and use method thereof |
| CN106520101A (en) * | 2016-09-18 | 2017-03-22 | 中国石油天然气股份有限公司 | Annular protecting fluid and preparation method thereof |
| CN106222677A (en) * | 2016-09-30 | 2016-12-14 | 内江师范学院 | A kind of pyrazolone compounds is as the application of restrainer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756840A (en) * | 2018-07-03 | 2018-11-06 | 武汉索克能源科技有限公司 | A kind of fluid pulse oil extraction system |
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Application publication date: 20180119 |