CN103410474A - Corrosion control method for annular space tubing and casings of oil field water injection well - Google Patents
Corrosion control method for annular space tubing and casings of oil field water injection well Download PDFInfo
- Publication number
- CN103410474A CN103410474A CN2013103419455A CN201310341945A CN103410474A CN 103410474 A CN103410474 A CN 103410474A CN 2013103419455 A CN2013103419455 A CN 2013103419455A CN 201310341945 A CN201310341945 A CN 201310341945A CN 103410474 A CN103410474 A CN 103410474A
- Authority
- CN
- China
- Prior art keywords
- water
- well
- discharge capacity
- injection well
- flushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Disclosed is a corrosion control method for annular space tubing and casings of an oil field water injection well. A construction technology comprises the steps of cleaning dirt on walls of the annular space tubing and casings up by an A agent or B agent formula, then, feeding a corrosion control treating agent with a certain concentration into annular spaces, and cleaning the annular spaces again and replacing the corrosion control treating agent after a period to protect the walls of the tubing and casings against corrosion for a long time. According to the corrosion control method, corrosion of annular space media to the tubing and the casings is reduced substantially, service lives (life)of the tubing and the casings of the water injection well can be prolonged by more than one time, the cost is low, the construction technology is simple and convenient, and effective technical support is provided for high yield and stable yield of oil fields.
Description
Technical field
The present invention relates to oil field tubing and casing corrosion control technology, particularly for water injection well in oil fields in the process of water filling, the corrosion of annular space oil pipe and sleeve pipe and a kind of water injection well in oil fields annular space tubing and casing process for corrosion control of developing.
Background technology
Oil field enters the exploitation middle and later periods; on the one hand due to continuous exploitation; the oil well formation pressure significantly descends; oil reservoir elasticity exploitation energy decreases; Water-Content Rise in produced liquid in oil well on the other hand, for protection of the environment with maintain the oil reservoir energy, need to separate sewage to production fluid and carry out processing up to standard; and the sewage of processing is injected into to oil reservoir by water injection well, reach the pressure that maintains oil reservoir and the purpose of water drive crude oil.Water injection well is in the process of water filling, because the water injection well annular space is a slough, the growth of its environment particularly suitable bacterium, bacterium constantly breeds and hyperplasia at annular space, in the annular space medium, hydrogen sulfide content can increase considerably, on tube wall, produce the fouling of iron sulfide deposition, annular space medium salinity is high in addition, the pH value is low, multifactorial synergy causes the medium of annular space, and not only homogeneous corrosion is serious, and dirt descends also especially severe of spot corrosion, cause injection well tubing, corrosion failure appears in sleeve pipe, sewage can not be injected into the water filling layer of design, water filling was lost efficacy, particularly sleeve pipe is due to the corrosion attenuation, corrosion produces groove, casing strength descends, can not bear the effect of geostatic stress and be out of shape or bad break, water injection well can't carry out water filling and scrap, again water filling need to be beaten new well or be carried out casing repairing, high and the impact of expense is produced, and current casing repair technology is perfect not, expense is high but success rate is low.Oil field enters the middle and later periods, and waterflooding extraction is oilfield stable production and the most effective means of increasing economic efficiency, and the heavy corrosion of water injection well annular space tubing and casing becomes main restraining factors.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, slow down the corrosion of water injection well annular space medium to the water injection well tubing and casing, avoid it to production, to cause adverse effect, guarantee the performance of waterflooding development effect and benefit, the object of the present invention is to provide a kind of water injection well in oil fields annular space tubing and casing process for corrosion control, can effectively remove the foulant of adhering on water injection well tubing and casing tube wall, can longer cycle on water injection well tubing and casing tube wall, form diaphragm, play contacting of isolation annular space medium and tubing and casing tube wall, significantly slow down the corrosion of annular space medium to tubing and casing, can extend the application life of water injection well tubing and casing more than 1 times, and cost is low, construction technology is simple and convenient.
For achieving the above object, technical scheme of the present invention is:
A kind of water injection well in oil fields annular space tubing and casing process for corrosion control, is characterized in that, when water injection well has the recycle-water pipeline, comprises the following steps:
At the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add a kind of A agent prescription of annular space tubing and casing tube wall incrustation thing cleaning agent, and adding mass concentration is 25%, and the joining day is T
1(h)=0.785 * 10
-7* L * (D
2 Cover-D
2 Oil)+0.1, D
CoverFor water injection well casing diameter mm, D
OilFor injection well tubing diameter mm, L is injection well tubing depth of setting m, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, and the joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, duration of well flushing are T
2(h)=0.314 * 10
-7* L * D
2 Cover+ 0.5, regulating the well-flushing water discharge capacity is 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control inorganic agent, adds concentration to divide 3 identical stages, and it is 1% that the first stage adds mass concentration, and the joining day is T
3(h)=0.175 * 10
-7* L(D
2 Cover-D
2 Oil), it is 2% that second stage adds mass concentration, the joining day is T
3(h), it is 6% that the phase III adds mass concentration, and the joining day is T
3(h), adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling; After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, adds concentration to divide 3 identical stages, and it is 1% that the first stage adds concentration, and the joining day is T
3(h), it is 2% that second stage adds mass concentration, and the joining day is T
3(h), it is 6% that the phase III adds mass concentration, and the joining day is T
3(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
A kind of water injection well in oil fields annular space tubing and casing process for corrosion control, it is characterized in that, when water injection well does not have the recycle-water pipeline, comprise the following steps: at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of injection flow, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with the injected water discharge capacity, mate, the B agent prescription that adds a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, adding mass concentration is 15%, joining day is T
1(h)=0.785 * 10
-6* L(D
2 cover-D
2 oil) ,/Q+0.5, D
coverfor water injection well casing diameter mm, D
oilfor injection well tubing diameter mm, L is injection well tubing depth of setting m, and Q is injected water discharge capacity m
3/ h, added the constant continuation water filling of rear injected water discharge capacity after 4 hours, and startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, and it is 1% that the first stage adds mass concentration, joining day T
2(h)=0.262 * 10
-6* L(D
2 cover-D
2 oil)/Q, it is 2% that second stage adds mass concentration, the joining day is T
2(h), it is 6% that the phase III adds mass concentration, and the joining day is T
2(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, after water filling 3 months, re-start construction, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water filling discharge capacity, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add the B agent prescription, adding mass concentration is 5%, joining day is 6 hours, add the constant continuation water filling of rear injected water discharge capacity 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, joining day T
2(h), it is 2% that second stage adds mass concentration, and the joining day is T
2(h), it is 6% that the phase III adds mass concentration, and the joining day is T
2(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carried out normal water filling, water filling after 3 months again, then repeat aforesaid operations, the rest may be inferred.
For the dosing for the first time of water injection well oil casing annular space, foulant on water injection well annular space oil jacket tube wall is cleaned up, the corrosion control inorganic agent be incorporated as 3 months one-periods, each cycle needs the tubing and casing tube wall is cleaned, and guarantees that the corrosion control added inorganic agent can bring into play its effect to greatest extent.
The A agent prescription of described a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, its mass percent consists of: 0～20%HCL, 0～15% glycolic acid, 0～5% potassium permanganate, 0.1～1% quinoline dichloroetane quaternary ammonium salt, 0.1～2% methenamine, 0.01～0.5% propilolic alcohol, 0.001～0.05% KI, 0.1～2% octadecylamine APEO (1825), the ethylene oxide condensate EL-20 of 0.1～2% castor oil, surplus are clear water;
The B agent prescription of described a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, its mass percent consists of: 0～10%HCL, 0～5% phytic acid, 0～15% hydroxy ethylene diphosphonic acid, 0～10%1, 6-hexamethylene diamine tetramethyl fork phosphonic acids, 0.1～2% ammonium thiocyanate, 0.1～1% pyridine benzyl dichloride quaternary ammonium salt, 0.5～2% methenamine, 0.01～0.5% propilolic alcohol, 0.001～0.05% KI, 0.1～2% octadecylamine APEO (1825), 0.01～1% bisoctyl dimethyl ammonium bromide, 0.1 the ethylene oxide condensate EL-20 of～2% castor oil, 0～2% demulsifier, 0～10% glycerine, 0～10% ethylene glycol monobutyl ether, surplus is clear water,
Described corrosion control treatment agent formula, the mass percent of its formula consists of: 5～30% imidazoline APEOs, 3～15% quinoline benzyl chloride quaternary ammonium salts, 1～10% octadecyl trimethyl ammonium chloride, 1～20% dodecyl dimethyl benzyl ammonium bromide, 1～30% didecyl Dimethy ammonium chloride, 1～5% methenamine, 0.5～5% butynediols, 0.5～5% tetramethyl KI, surplus are clear water.
Principle of the present invention is: at first A agent or B agent are injected to the water injection well oil casing annular space by high-pressure plunger measuring pump and well-flushing water in finite concentration ratio coupling, foulant on the tubing and casing tube wall is cleaned up, be conducive on the one hand corrosion control inorganic agent film forming on the tube wall of tubing and casing, play a protective role, remove on the other hand the foulant on tube wall, reduce or stopped the spot corrosion that under the bacterium dirt, breeding and hyperplasia bring, consider simultaneously the corrosion losses that alleviate to greatest extent tubing and casing, A agent prescription and B agent prescription add concentration lower than 30% the time, corrosion rate all is less than 0.076mm/a.
For the water injection well that well-flushing recycle-water pipeline is arranged, well-flushing water enters the Sewage Disposal wastewater disposal basin by the recycle-water pipeline, the well-flushing water of washing well process does not need to enter water injection well water filling layer, the secondary precipitation instability problem that does not need to consider the well-flushing water raffinate after well-flushing work progress and end, therefore, adopt the A agent prescription to carry out the cleaning of tubing and casing tube wall incrustation thing whether to water filling layer have pollute and blockage problem, if not needing to consider;
For the water injection well that there is no well-flushing recycle-water pipeline, well-flushing water can't enter the Sewage Disposal wastewater disposal basin by the recycle-water pipeline, the well-flushing water of washing well process can only enter water injection well water filling layer, the well-flushing work progress with finish after need to consider the well-flushing water raffinate unstable with the secondary precipitation problem, prevent from occurring that precipitation causes secondary pollution to stop up the water filling layer after it from entering the water filling layer, therefore, adopt the B agent prescription to carry out the cleaning of tubing and casing tube wall incrustation thing, after B agent prescription cleaning fluid had cleaning, raffinate was without particle, stable under water filling layer condition, the performance that secondary precipitation do not occur, cost is higher than A agent prescription cleaning fluid,
After well-flushing finishes, by high-pressure plunger measuring pump and well-flushing water, in finite concentration ratio coupling, the corrosion control inorganic agent is injected to the water injection well oil casing annular space, after being full of the water injection well oil casing annular space, the well-flushing water that is added with the corrosion control inorganic agent stops well-flushing, close water injection well sleeve pipe terminal valve, proceed to normal water filling flow process.Due to the corrosion control inorganic agent can effectively kill on annular space tubing and casing tube wall with medium in bacterium, controlled on the annular space tube wall with medium in bacterium do not breed and hyperplasia, bacterial corrosion is controlled, in addition, the corrosion control inorganic agent can adsorb the stable hydrophobic film of formation one deck on the tubing and casing tube wall, by medium and tubing and casing isolation, played and prevented that tubing and casing from avoiding the corrosion of annular space medium, corrosion control inorganic agent stable in properties, be greater than more than 180 days stationary phase in the annular space medium, therefore, the corrosion control inorganic agent can effectively be controlled breeding and the corrosion of bacterium in annular space medium fully within 3 months cycles of dosing.
On water injection well annular space corrosion control inorganic agent CONCENTRATION DISTRIBUTION from top to bottom, also be studied, by a large amount of laboratory experiments, estimated the diffusion velocity of corrosion control inorganic agent, by field trial, the diffusivity of corrosion control inorganic agent is tested, the concentration that has proved water injection well annular space top 1/3 space corrosion control inorganic agent is 6%, the concentration of middle part 1/3 space corrosion control inorganic agent is 2%, the concentration of bottom 1/3 space corrosion control inorganic agent is 1%, within the cycle of 3 months, can guarantee that the corrosion control inorganic agent concentration in the annular space medium is in the concentration range of effective control bacterial reproduction and corrosion.
The present invention, according to the water injection well production technology characteristic, provides a kind of annular space tubing and casing tube wall incrustation cleaning agent A agent, B agent and corrosion control inorganic agent and construction technology; For the different process design of water injection well 2 kinds of cleaning agent formula A agent and B agent, when can effectively remove the foulant on the tubing and casing tube wall, can not cause the secondary pollution of water filling layer; Reason for the corrosion of water injection well annular space has designed the corrosion control inorganic agent with sterilization and corrosion inhibitive function; filming performance is good; stability is good; cycle at annular space more than 3 months can effectively be controlled the breeding of bacterium and the corrosion of medium; the bacterial content of annular space medium is less than 25/mL; sterilizing rate is greater than 99%, and corrosion rate is less than 0.076mm/a, can play the purpose that the protection tubing and casing is avoided corroding.
The accompanying drawing explanation
Fig. 1 is the control technology construction process figure that prevents the corrosion of water injection well annular space tubing and casing of the present invention.
The specific embodiment:
Below by specific embodiment, further illustrate the present invention.
Embodiment mono-
The present embodiment is the water injection well (well depth 2200m) that the recycle-water pipeline is arranged.
The construction technology of the present embodiment, step is: as Fig. 1, connect flow process, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, adding mass concentration is 25%, and the joining day is 2.1 hours, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, well-flushing are after 1.56 hours, and regulating the well-flushing water discharge capacity is 15m
3/ h, startup high-pressure plunger measuring pump and well-flushing water discharge capacity coupling add the corrosion control treatment agent formula, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.44 hour, and adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling.After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that the first stage adds concentration, and it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.44 hour, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carries out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
The A agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 15%HCL, 3% glycolic acid, 1% potassium permanganate, 0.6% quinoline dichloroetane quaternary ammonium salt, 1.2% methenamine, 0.3% propilolic alcohol, 0.02% KI, 0.5% octadecylamine APEO (1825), the ethylene oxide condensate EL-20 of 0.3% castor oil, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 13% imidazoline APEO, 11% quinoline benzyl chloride quaternary ammonium salt, 5% octadecyl trimethyl ammonium chloride, 12% dodecyl dimethyl benzyl ammonium bromide, 6% didecyl Dimethy ammonium chloride, 3% methenamine, 2% butynediols, 0.1% tetramethyl KI, surplus are clear water.
6 mouthfuls of field conduct water injection well meters, all be less than 10/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.052mm/a.
Embodiment bis-
The present embodiment is the water injection well (well depth 1800m) that the recycle-water pipeline is arranged.
The construction technology of the present embodiment, step is: as Fig. 1, connect flow process, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, adding mass concentration is 25%, and the joining day is 1.72 hours, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, well-flushing are after 1.36 hours, and regulating the well-flushing water discharge capacity is 15m
3/ h, startup high-pressure plunger measuring pump and well-flushing water discharge capacity coupling add the corrosion control treatment agent formula, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.36 hour, and adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling.After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that the first stage adds concentration, and it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.36 hour, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carries out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
The A agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 12%HCL, 7% glycolic acid, 0.3% potassium permanganate, 0.8% quinoline dichloroetane quaternary ammonium salt, 1.5% methenamine, 0.5% propilolic alcohol, 0.015% KI, 0.6% octadecylamine APEO (1825), the ethylene oxide condensate EL-20 of 0.2% castor oil, surplus are clear water.
The corrosion control treatment agent formula injected, mass percent consists of: 15% imidazoline APEO, 9% quinoline benzyl chloride quaternary ammonium salt, 6% octadecyl trimethyl ammonium chloride, 7% dodecyl dimethyl benzyl ammonium bromide, 11% didecyl Dimethy ammonium chloride, 3% methenamine, 1.5% butynediols, 0.15% tetramethyl KI, surplus are clear water.
4 mouthfuls of field conduct water injection well meters, all be less than 7.5/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.047mm/a.
Embodiment tri-
The present embodiment is the water injection well (well depth 2480m) that the recycle-water pipeline is arranged.
The construction technology of the present embodiment, step is: as Fig. 1, connect flow process, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, adding mass concentration is 25%, and the joining day is 2.4 hours, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, well-flushing are after 1.7 hours, and regulating the well-flushing water discharge capacity is 15m
3/ h, startup high-pressure plunger measuring pump and well-flushing water discharge capacity coupling add the corrosion control treatment agent formula, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.5 hour, and adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling.After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that the first stage adds concentration, and it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.44 hour, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carries out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
The A agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 16%HCL, 5% glycolic acid, 0.2% potassium permanganate, 0.7% quinoline dichloroetane quaternary ammonium salt, 2% methenamine, 0.4% propilolic alcohol, 0.03% KI, 0.8% octadecylamine APEO (1825), the ethylene oxide condensate EL-20 of 0.3% castor oil, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 12% imidazoline APEO, 14% quinoline benzyl chloride quaternary ammonium salt, 5% octadecyl trimethyl ammonium chloride, 6% dodecyl dimethyl benzyl ammonium bromide, 12% didecyl Dimethy ammonium chloride, 4% methenamine, 1.2% butynediols, 0.1% tetramethyl KI, surplus are clear water.
9 mouthfuls of field conduct water injection well meters, all be less than 6.5/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.063mm/a.
Embodiment tetra-
The present embodiment is the water injection well (well depth 2000m) that the recycle-water pipeline is arranged.
The construction technology of the present embodiment, step is: as Fig. 1, connect flow process, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, adding mass concentration is 25%, and the joining day is 1.9 hours, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, well-flushing are after 1.46 hours, and regulating the well-flushing water discharge capacity is 15m
3/ h, startup high-pressure plunger measuring pump and well-flushing water discharge capacity coupling add the corrosion control treatment agent formula, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.4 hour, and adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling.After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that the first stage adds concentration, and it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 0.4 hour, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carries out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
The A agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of:: 6%HCL, 11% glycolic acid, 0.2% potassium permanganate, 0.8% quinoline dichloroetane quaternary ammonium salt, 3% methenamine, 0.4% propilolic alcohol, 0.035% KI, 0.6% octadecylamine APEO (1825), the ethylene oxide condensate EL-20 of 0.25% castor oil, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 18% imidazoline APEO, 6% quinoline benzyl chloride quaternary ammonium salt, 4% octadecyl trimethyl ammonium chloride, 8% dodecyl dimethyl benzyl ammonium bromide, 5% didecyl Dimethy ammonium chloride, 3% methenamine, 1.5% butynediols, 0.15% tetramethyl KI, surplus are clear water.
11 mouthfuls of field conduct water injection well meters, all be less than 4.5/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.058mm/a.
Embodiment five
The present embodiment is water injection well (well depth 1650m, the water injection rate 32m that there is no the recycle-water pipeline
3/ d).
The construction technology of the present embodiment, step is: connect flow process as Fig. 1, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water injection rate, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add a kind of B agent prescription of annular space tubing and casing tube wall incrustation thing cleaning agent, adding mass concentration is 15%, joining day is 15.35 hours, D
coverfor water injection well casing diameter mm, D
oilfor injection well tubing diameter mm, L is injection well tubing depth of setting m, and Q is injected water discharge capacity m
3/ h, add the constant continuation water filling of rear injected water discharge capacity after 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 4.95 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, after water filling 3 months, re-start construction, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water filling discharge capacity, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add the B agent prescription, adding mass concentration is 5%, joining day is 6 hours, add the constant continuation water filling of rear injected water discharge capacity 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 4.95 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, water filling is after 3 months again, repeat again aforesaid operations, the rest may be inferred.
The B agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 6%HCL, 2% phytic acid, 13% hydroxy ethylene diphosphonic acid, 4%1,6-hexamethylene diamine tetramethyl fork phosphonic acids, 0.5% ammonium thiocyanate, 0.8% pyridine benzyl dichloride quaternary ammonium salt, 1.5% methenamine, 0.3% propilolic alcohol, 0.01% KI, 0.5% octadecylamine APEO (1825), 0.5% bisoctyl dimethyl ammonium bromide, the ethylene oxide condensate EL-20 of 0.3% castor oil, 0.1% demulsifier, 5% glycerine, 6% ethylene glycol monobutyl ether, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 16% imidazoline APEO, 11% quinoline benzyl chloride quaternary ammonium salt, 3% octadecyl trimethyl ammonium chloride, 7% dodecyl dimethyl benzyl ammonium bromide, 6% didecyl Dimethy ammonium chloride, 3% methenamine, 1.5% butynediols, 0.15% tetramethyl KI, surplus are clear water.
7 mouthfuls of field conduct water injection well meters, all be less than 15/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.051mm/a.
Embodiment six
The present embodiment is water injection well (well depth 2800m, the water injection rate 45m that there is no the recycle-water pipeline
3/ d).
The construction technology of the present embodiment, step is: connect flow process as Fig. 1, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water injection rate, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add a kind of B agent prescription of annular space tubing and casing tube wall incrustation thing cleaning agent, adding mass concentration is 15%, joining day is 18.5 hours, D
coverfor water injection well casing diameter mm, D
oilfor injection well tubing diameter mm, L is injection well tubing depth of setting m, and Q is injected water discharge capacity m
3/ h, add the constant continuation water filling of rear injected water discharge capacity after 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, the time that every one-phase adds is 6 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, after water filling 3 months, re-start construction, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water filling discharge capacity, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add the B agent prescription, adding mass concentration is 5%, joining day is 6 hours, add the constant continuation water filling of rear injected water discharge capacity 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, joining day T
2(h), it is 2% that second stage adds mass concentration, and it is 6% that the phase III adds mass concentration, the time that every one-phase adds is 6 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carries out normal water filling, water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
The B agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 3%HCL, 5% phytic acid, 12% hydroxy ethylene diphosphonic acid, 7%1,6-hexamethylene diamine tetramethyl fork phosphonic acids, 0.3% ammonium thiocyanate, 1% pyridine benzyl dichloride quaternary ammonium salt, 2% methenamine, 0.5% propilolic alcohol, 0.01% KI, 0.5% octadecylamine APEO (1825), 0.5% bisoctyl dimethyl ammonium bromide, the ethylene oxide condensate EL-20 of 0.3% castor oil, 0.1% demulsifier, 5% glycerine, 6% ethylene glycol monobutyl ether, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 16% imidazoline APEO, 11% quinoline benzyl chloride quaternary ammonium salt, 3% octadecyl trimethyl ammonium chloride, 7% dodecyl dimethyl benzyl ammonium bromide, 6% didecyl Dimethy ammonium chloride, 3% methenamine, 1.5% butynediols, 0.15% tetramethyl KI, surplus are clear water;
12 mouthfuls of field conduct water injection well meters, all be less than 9.5/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.044mm/a.
Embodiment seven
The present embodiment is water injection well (well depth 1200m, the water injection rate 50m that there is no the recycle-water pipeline
3/ d).
The construction technology of the present embodiment, step is: connect flow process as Fig. 1, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water injection rate, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add a kind of B agent prescription of annular space tubing and casing tube wall incrustation thing cleaning agent, adding mass concentration is 15%, joining day is 7.42 hours, D
coverfor water injection well casing diameter mm, D
oilfor injection well tubing diameter mm, L is injection well tubing depth of setting m, and Q is injected water discharge capacity m
3/ h, add the constant continuation water filling of rear injected water discharge capacity after 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, each section joining day is 2.31 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, after water filling 3 months, re-start construction, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water filling discharge capacity, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add the B agent prescription, adding mass concentration is 5%, joining day is 6 hours, add the constant continuation water filling of rear injected water discharge capacity 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, it is 2% that second stage adds mass concentration, it is 6% that phase III adds mass concentration, each section joining day is 2.31 hours, after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, water filling is after 3 months again, repeat again aforesaid operations, the rest may be inferred.
The B agent prescription of the annular space tubing and casing tube wall incrustation thing cleaning agent injected, its mass percent consists of: 3%HCL, 5% phytic acid, 8% hydroxy ethylene diphosphonic acid, 7%1,6-hexamethylene diamine tetramethyl fork phosphonic acids, 0.4% ammonium thiocyanate, 1.2% pyridine benzyl dichloride quaternary ammonium salt, 1.5% methenamine, 0.4% propilolic alcohol, 0.015% KI, 0.6% octadecylamine APEO (1825), 0.4% bisoctyl dimethyl ammonium bromide, the ethylene oxide condensate EL-20 of 0.3% castor oil, 0.15% demulsifier, 8% glycerine, 4% ethylene glycol monobutyl ether, surplus are clear water.
The corrosion control treatment agent formula injected, the mass percent of its formula consists of: 21% imidazoline APEO, 6% quinoline benzyl chloride quaternary ammonium salt, 4% octadecyl trimethyl ammonium chloride, 6% dodecyl dimethyl benzyl ammonium bromide, 9% didecyl Dimethy ammonium chloride, 5% methenamine, 1.0% butynediols, 0.2% tetramethyl KI, surplus are clear water.
7 mouthfuls of field conduct water injection well meters, all be less than 11.5/mL through the bacterial content of tracking and testing water injection well annular space medium, and corrosion rate all is less than 0.055mm/a.
Due to different oil fields, the difference of the water injection well injected water dielectric property of different blocks, the bacterial content difference, the corrosivity difference, requirement to each component in A formula, B agent prescription, corrosion control treatment agent formula is also different, right includes but not limited to component and the content of described each formula of article, within any A, B agent prescription, corrosion control treatment agent formula that comprises the described different component of right and different content composition all belongs to the scope of claim.
Claims (5)
1. a water injection well in oil fields annular space tubing and casing process for corrosion control, is characterized in that, when water injection well has the recycle-water pipeline, comprises the following steps:
At the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, open the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, well-flushing, after 1.5 hours, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add a kind of A agent prescription of annular space tubing and casing tube wall incrustation thing cleaning agent, and adding mass concentration is 25%, and the joining day is T
1(h)=0.785 * 10
-7* L * (D
2 Cover-D
2 Oil)+0.1, D
CoverFor water injection well casing diameter mm, D
OilFor injection well tubing diameter mm, L is injection well tubing depth of setting m, and then reducing the plunger displacement pump discharge capacity, to make the A agent add mass concentration be 5%, and the joining day is 4 hours, and the dosing of stop plunger pump improves the well-flushing water discharge capacity to 25m
3/ h, duration of well flushing are T
2(h)=0.314 * 10
-7* L * D
2 Cover+ 0.5, regulating the well-flushing water discharge capacity is 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control inorganic agent, adds concentration to divide 3 identical stages, and it is 1% that the first stage adds mass concentration, and the joining day is T
3(h)=0.175 * 10
-7* L(D
2 Cover-D
2 Oil), it is 2% that second stage adds mass concentration, the joining day is T
3(h), it is 6% that the phase III adds mass concentration, and the joining day is T
3(h), adding rear adjustment water injection well valve is the water filling flow process, carries out normal water filling; After water filling 3 months, re-start construction, at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, opens the recycle-water single well pipeline valve of distributing room for water injection, regulating the well-flushing discharge capacity is 25m
3/ h, after well-flushing 60min, reduce the well-flushing discharge capacity to 10m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the A agent prescription, and adding mass concentration is 5%, after the joining day is 3 hours, and the dosing of stop plunger pump, raising well-flushing water discharge capacity is to 25m
3/ h, well-flushing, after 2 hours, reduce the well-flushing water discharge capacity to 15m
3/ h, start high-pressure plunger measuring pump and well-flushing water discharge capacity coupling, and add the corrosion control treatment agent formula, adds concentration to divide 3 identical stages, and it is 1% that the first stage adds concentration, and the joining day is T
3(h), it is 2% that second stage adds mass concentration, and the joining day is T
3(h), it is 6% that the phase III adds mass concentration, and the joining day is T
3(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling; Water filling is after 3 months again, then repeats aforesaid operations, and the rest may be inferred.
2. water injection well in oil fields annular space tubing and casing process for corrosion control, it is characterized in that, when water injection well does not have the recycle-water pipeline, comprise the following steps: at the well head of water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of injection flow, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with the injected water discharge capacity, mate, the B agent prescription that adds a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, adding mass concentration is 15%, joining day is T
1(h)=0.785 * 10
-6* L(D
2 cover-D
2 oil) ,/Q+0.5, D
coverfor water injection well casing diameter mm, D
oilfor injection well tubing diameter mm, L is injection well tubing depth of setting m, and Q is injected water discharge capacity m
3/ h, added the constant continuation water filling of rear injected water discharge capacity after 4 hours, and startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, and it is 1% that the first stage adds mass concentration, joining day T
2(h)=0.262 * 10
-6* L(D
2 cover-D
2 oil)/Q, it is 2% that second stage adds mass concentration, the joining day is T
2(h), it is 6% that the phase III adds mass concentration, and the joining day is T
2(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carry out normal water filling, after water filling 3 months, re-start construction, well head at water injection well, the high-pressure plunger measuring pump is connected with the sample cock of water injection well injected water pipeline, the original annotation Water flow-path of wellhead of water injection well is adjusted into to the anti-flushing well flow process, regulating the injected water discharge capacity is 75% of water filling discharge capacity, from the sleeve pipe annular space, water is injected to the water filling layer, meanwhile start plunger displacement pump, with injected water discharge capacity coupling, add the B agent prescription, adding mass concentration is 5%, joining day is 6 hours, add the constant continuation water filling of rear injected water discharge capacity 4 hours, startup high-pressure plunger measuring pump and injected water discharge capacity coupling add the corrosion control treatment agent formula, add concentration to divide 3 identical stages, it is 1% that first stage adds mass concentration, joining day T
2(h), it is 2% that second stage adds mass concentration, and the joining day is T
2(h), it is 6% that the phase III adds mass concentration, and the joining day is T
2(h), after adding, the water injection well valve is adjusted to the re-injection Water flow-path, carried out normal water filling, water filling after 3 months again, then repeat aforesaid operations, the rest may be inferred.
3. a kind of water injection well in oil fields annular space tubing and casing process for corrosion control according to claim 1, it is characterized in that, the A agent prescription of described a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, its mass percent consists of: 0～20%HCL, 0～15% glycolic acid, 0～5% potassium permanganate, 0.1～1% quinoline dichloroetane quaternary ammonium salt, 0.1～2% methenamine, 0.01～0.5% propilolic alcohol, 0.001～0.05% KI, 0.1～2% octadecylamine APEO (1825), 0.1 the ethylene oxide condensate EL-20 of～2% castor oil, surplus is clear water.
4. a kind of water injection well in oil fields annular space tubing and casing process for corrosion control according to claim 2, it is characterized in that, the B agent prescription of described a kind of annular space tubing and casing tube wall incrustation thing cleaning agent, its mass percent consists of: 0～10%HCL, 0～5% phytic acid, 0～15% hydroxy ethylene diphosphonic acid, 0～10%1, 6-hexamethylene diamine tetramethyl fork phosphonic acids, 0.1～2% ammonium thiocyanate, 0.1～1% pyridine benzyl dichloride quaternary ammonium salt, 0.5～2% methenamine, 0.01～0.5% propilolic alcohol, 0.001～0.05% KI, 0.1～2% octadecylamine APEO (1825), 0.01～1% bisoctyl dimethyl ammonium bromide, 0.1 the ethylene oxide condensate EL-20 of～2% castor oil, 0～2% demulsifier, 0～10% glycerine, 0～10% ethylene glycol monobutyl ether, surplus is clear water.
5. a kind of water injection well in oil fields annular space tubing and casing process for corrosion control according to claim 1 and 2, it is characterized in that, described corrosion control treatment agent formula, the mass percent of its formula consists of: 5～30% imidazoline APEOs, 3～15% quinoline benzyl chloride quaternary ammonium salts, 1～10% octadecyl trimethyl ammonium chloride, 1～20% dodecyl dimethyl benzyl ammonium bromide, 1～30% didecyl Dimethy ammonium chloride, 1～5% methenamine, 0.5～5% butynediols, 0.5～5% tetramethyl KI, surplus are clear water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310341945.5A CN103410474B (en) | 2013-08-07 | 2013-08-07 | A kind of water injection well in oil fields annular space tubing and casing process for corrosion control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310341945.5A CN103410474B (en) | 2013-08-07 | 2013-08-07 | A kind of water injection well in oil fields annular space tubing and casing process for corrosion control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410474A true CN103410474A (en) | 2013-11-27 |
| CN103410474B CN103410474B (en) | 2015-10-28 |
Family
ID=49603508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310341945.5A Expired - Fee Related CN103410474B (en) | 2013-08-07 | 2013-08-07 | A kind of water injection well in oil fields annular space tubing and casing process for corrosion control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410474B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790553A (en) * | 2014-02-28 | 2014-05-14 | 西安石油大学 | Control method of scaling in oil well production process |
| CN104155231A (en) * | 2014-04-02 | 2014-11-19 | 山东省鲁北地质工程勘察院 | Corrosion performance testing device and method for deep brine formation filter pipe |
| CN104265240A (en) * | 2014-07-26 | 2015-01-07 | 中国石油天然气股份有限公司 | Added water diluting electric wellhead dosing process |
| CN105733541A (en) * | 2014-12-11 | 2016-07-06 | 中国石油化工股份有限公司 | Corrosion and scale inhibitor composition, application thereof, and oil field water injection wellbore corrosion and scale prevention method |
| CN105863560A (en) * | 2016-05-25 | 2016-08-17 | 辽宁瑞达石油技术有限公司 | Oil-well steam thermal washing and chemical agent composite paraffin removal system and method |
| CN106285566A (en) * | 2016-08-01 | 2017-01-04 | 中嵘能源科技集团有限公司 | A kind of air injection anticorrosion completion method and the inhibition acid solution wherein used |
| CN113337263A (en) * | 2021-05-31 | 2021-09-03 | 中石化重庆页岩气有限公司 | Corrosion inhibition bactericide for normal-pressure shale gas field |
| CN114574183A (en) * | 2022-02-15 | 2022-06-03 | 陕西化工研究院有限公司 | CO (carbon monoxide)2Imidazoline-pyridine composite corrosion inhibitor for oil displacement |
| US11525186B2 (en) | 2019-06-11 | 2022-12-13 | Ecolab Usa Inc. | Corrosion inhibitor formulation for geothermal reinjection well |
| CN115820237A (en) * | 2022-12-14 | 2023-03-21 | 泰坦(天津)能源技术有限公司 | Corrosion inhibitor for carbon dioxide flooding and preparation method thereof |
| US11939850B2 (en) | 2022-01-07 | 2024-03-26 | Saudi Arabian Oil Company | Apparatus for TCA bleed off and well start-up |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2369735C1 (en) * | 2008-10-27 | 2009-10-10 | Открытое Акционерное Общество "Татнефть" им В.Д. Шашина | Method of control of corrosion caused with sulphate-reducing bacteria |
| CN102635344A (en) * | 2012-04-13 | 2012-08-15 | 中国石油天然气股份有限公司 | Composite blocking-removal method for improving flow conductivity of triple-low sandstone reservoir |
| CN102775975A (en) * | 2012-07-19 | 2012-11-14 | 中国石油天然气股份有限公司 | Blocking remover for reservoir of oil well |
-
2013
- 2013-08-07 CN CN201310341945.5A patent/CN103410474B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2369735C1 (en) * | 2008-10-27 | 2009-10-10 | Открытое Акционерное Общество "Татнефть" им В.Д. Шашина | Method of control of corrosion caused with sulphate-reducing bacteria |
| CN102635344A (en) * | 2012-04-13 | 2012-08-15 | 中国石油天然气股份有限公司 | Composite blocking-removal method for improving flow conductivity of triple-low sandstone reservoir |
| CN102775975A (en) * | 2012-07-19 | 2012-11-14 | 中国石油天然气股份有限公司 | Blocking remover for reservoir of oil well |
Non-Patent Citations (1)
| Title |
|---|
| 朱康岭等: "油田注水井环空保护液HK-1的研制与现场试验", 《油田化学》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790553B (en) * | 2014-02-28 | 2017-02-15 | 西安石油大学 | Control method of scaling in oil well production process |
| CN103790553A (en) * | 2014-02-28 | 2014-05-14 | 西安石油大学 | Control method of scaling in oil well production process |
| CN104155231A (en) * | 2014-04-02 | 2014-11-19 | 山东省鲁北地质工程勘察院 | Corrosion performance testing device and method for deep brine formation filter pipe |
| CN104155231B (en) * | 2014-04-02 | 2017-07-14 | 山东省鲁北地质工程勘察院 | A kind of Deep Formation Brine stratum filter pipe corrosive nature test device and method of testing |
| CN104265240A (en) * | 2014-07-26 | 2015-01-07 | 中国石油天然气股份有限公司 | Added water diluting electric wellhead dosing process |
| CN105733541A (en) * | 2014-12-11 | 2016-07-06 | 中国石油化工股份有限公司 | Corrosion and scale inhibitor composition, application thereof, and oil field water injection wellbore corrosion and scale prevention method |
| CN105733541B (en) * | 2014-12-11 | 2018-07-31 | 中国石油化工股份有限公司 | Corrosion inhibiting and descaling agent composition and its application and oil-field flooding pit shaft corrosion protection method of scale inhibition |
| CN105863560A (en) * | 2016-05-25 | 2016-08-17 | 辽宁瑞达石油技术有限公司 | Oil-well steam thermal washing and chemical agent composite paraffin removal system and method |
| CN106285566A (en) * | 2016-08-01 | 2017-01-04 | 中嵘能源科技集团有限公司 | A kind of air injection anticorrosion completion method and the inhibition acid solution wherein used |
| US11525186B2 (en) | 2019-06-11 | 2022-12-13 | Ecolab Usa Inc. | Corrosion inhibitor formulation for geothermal reinjection well |
| CN113337263A (en) * | 2021-05-31 | 2021-09-03 | 中石化重庆页岩气有限公司 | Corrosion inhibition bactericide for normal-pressure shale gas field |
| US11939850B2 (en) | 2022-01-07 | 2024-03-26 | Saudi Arabian Oil Company | Apparatus for TCA bleed off and well start-up |
| CN114574183A (en) * | 2022-02-15 | 2022-06-03 | 陕西化工研究院有限公司 | CO (carbon monoxide)2Imidazoline-pyridine composite corrosion inhibitor for oil displacement |
| CN115820237A (en) * | 2022-12-14 | 2023-03-21 | 泰坦(天津)能源技术有限公司 | Corrosion inhibitor for carbon dioxide flooding and preparation method thereof |
| CN115820237B (en) * | 2022-12-14 | 2024-02-06 | 泰坦(天津)能源技术有限公司 | Corrosion inhibitor for carbon dioxide flooding and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103410474B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103410474B (en) | A kind of water injection well in oil fields annular space tubing and casing process for corrosion control | |
| CN101747881B (en) | Descaling and blockage relieving agent for oil-water well | |
| CN102259988B (en) | Multifunctional water treatment agent for oilfield reinjection water | |
| CN105712504B (en) | A kind of corrosion inhibiting and descaling agent for acidic high-temperature gas water, preparation method and application | |
| CN104610951A (en) | Sterilization algaecide used for oil field and preparation method thereof | |
| CN102287167B (en) | Method for removing and preventing wax of mechanical recovery well by microorganism | |
| CN102965090B (en) | Corrosion inhibitor composition | |
| CN206666644U (en) | Oil-water well sacrificial anode corrosion-preventing device | |
| US11365342B2 (en) | Metal sulfate scale dissolution | |
| CN105041269A (en) | Method for inhibiting corrosion of oil producing well tube inner wall | |
| CN103075912A (en) | Method for cleaning floor heating pipes | |
| CN102358834B (en) | Solid descaling acid rod for oil well | |
| CN107117722A (en) | A kind of polymer-containing sewage in oil field water quality stabilizer and preparation method | |
| CN105647499A (en) | Oil well neutral supramolecular care exploitation assistant | |
| CN103113866B (en) | Novel biological inhibitor for inhibiting activity of sulfate reducing bacteria in oil well and use method thereof | |
| CN204960888U (en) | Metastable alloying metal anti fouling device | |
| CN1854085A (en) | Scale-proofing method of boiler | |
| DuBose et al. | A case history of microbiologically influenced corrosion in the Lost Hills oilfield, Kern County, California | |
| CN106047326B (en) | It is a kind of suitable for high salinity, the CO of high barium strontium environment2Drive corrosion inhibiting and descaling agent | |
| CN209908461U (en) | Geothermal well downhole pipeline dosing system | |
| CN105804698A (en) | Method for alleviating corrosion of deep layer and pipeline of oil well | |
| CN102504783A (en) | Biological enzyme oilfield blocking remover | |
| CN105888632B (en) | A kind of flushing device | |
| CN203007425U (en) | Device for cleaning and pre-coating cooling wall of blast furnace | |
| CN102536180B (en) | Method and device for preventing sediment and scale substances from entering into rock core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Xiangzeng Inventor after: Guo Xuehui Inventor after: Du Suzhen Inventor after: Liu Li Inventor after: Tao Hongsheng Inventor after: Li Guoming Inventor after: Yu Haitang Inventor after: Bai Li Inventor after: Li Lei Inventor before: Wang Xiangzeng Inventor before: Guo Xuehui Inventor before: Du Suzhen Inventor before: Liu Li Inventor before: Tao Hongsheng Inventor before: Li Guoming Inventor before: Yu Haitang Inventor before: Bai Li Inventor before: Li Lei |
|
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20190807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |