CN110003876A - For handling the composition, method and the device that produce the lock injury of water-setting gassing well liquid - Google Patents
For handling the composition, method and the device that produce the lock injury of water-setting gassing well liquid Download PDFInfo
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- CN110003876A CN110003876A CN201910351701.2A CN201910351701A CN110003876A CN 110003876 A CN110003876 A CN 110003876A CN 201910351701 A CN201910351701 A CN 201910351701A CN 110003876 A CN110003876 A CN 110003876A
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- liquid
- well
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- lock
- water
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
The present invention relates to oil gas field reservoir protection fields, in particular to a kind of for handling the composition, method and the device that produce the lock injury of water-setting gassing well liquid.It includes liquid-proof lock medicament and foam discharging agent that this, which is used to handle and produces water-setting gassing well liquid to lock the composition of injury, and it includes fluorocarbon surfactant, clay stabilizer and high temperature cleanup additive that liquid-proof, which locks medicament,.Gas-liquid interface tension is reduced while wherein liquid-proof lock medicament can improve the wettability of reservoir, achievees the purpose that inhibiting wellbore effusion reverse osmosis during closing well to enter reservoir causes liquid lock injury；Foam discharging agent, which can reduce to drive a well, reproduces head of liquid caused by rear wellbore effusion, to increase the producing pressure differential in shaft bottom, reduces the flow resistance of gas.Method for being used to handle production water-setting gassing well liquid lock injury is easy to operate, construction efficiency is high, implementation result is good for this, it can effectively prevent quickly reproduce after making it drive a well because producing the lock injury of liquid caused by water condensate gas well reservoir after urgent closing well operation using this method.
Description
Technical field
The present invention relates to oil gas field reservoir protection fields, produce water-setting gassing well liquid for handling in particular to one kind
Lock composition, method and the device of injury.
Background technique
China's gas condensate reservoir is resourceful, such as Tarim Basin, Kelamayi and the large and medium-sized condensation for spitting Kazakhstan oil field in Xinjiang
The exploitation of gas reservoir has played great function for the rising of China's oil and gas production.But with going deep into for condensate reservoir development, part is solidifying
There is the production phenomenon of yield decline in gassing well, causes serious economic loss, and wherein the injury of reservoir liquid lock is to cause to produce
Measure the one of the major reasons of decline.
With the decline of stratum energy, condensate is gradually precipitated, in addition the intrusion of external working solution and the production of water flooding
Out, the liquid phase saturation degree in formation near-wellbore area is caused to rise, the relative permeability decline of gas phase.In addition to this, artificially can not
Temporary emergency closing well operation caused by control factor makes wellbore effusion reverse osmosis under the collective effect of well shut-in period capillary force and gravity
Analysis enters the generation that reservoir has more promoted nearly pit shaft area liquid phase trap, especially hypotonic gas condensate reservoir, due to there is starting pressure
Power is difficult to reproduce after closing well.
Currently, the releasing technique for the lock injury of reservoir liquid mainly includes physical method (hydrofracturing method, microwave heating
Method, gas recycling method) with chemical method (water suction desiccation method, neutral wetting method), wherein microwave heating method and water suction desiccation method be still
In indoor theory conceptual phase, field application is still immature；Hydrofracturing method, gas recycling method and neutral wetting method are both needed to
Matched construction equipment is wanted, construction cost is relatively high and is intended to release the already existing liquid lock injury of reservoir.It is closed for interim
The emergency event of well, the construction time needed for traditional liquid lock releases technique is difficult to meet actual condition demand, therefore is badly in need of finding one
Kind efficiently, convenient for the condensate gas well reservoir liquid of operation locks the prevention method of injury, especially proposes that a kind of be directed to needs promptly to close
That stops produces the prevention method of water-setting gassing well liquid lock injury, locks it from liquid in artificial uncontrollable factor well shut-in period and injures,
It can be achieved quickly to reproduce after driving a well.
Given this special to propose the application.
Summary of the invention
The purpose of the present invention is to provide a kind of for handling the composition for producing the lock injury of water-setting gassing well liquid, can change
Gas-liquid surface tension is reduced while the wettability of kind reservoir, reaches and wellbore effusion reverse osmosis during closing well is inhibited to enter storage
Layer causes the purpose of liquid lock injury, and drive a well reproduce after can reduce head of liquid caused by wellbore effusion, increase well
Bottom producing pressure differential reduces the flow resistance of gas, achievees the purpose that quickly to reproduce.
Another object of the present invention is to provide a kind of for handling the method for producing the lock injury of water-setting gassing well liquid, operation
Simply, construction efficiency is high, implementation result is good, can effectively prevent well shut-in period using this method and produce the generation of water condensate gas well reservoir
Liquid lock injury, can quickly be reproduced after so that it is driven a well.
Another object of the present invention is to provide a kind of for handling the device for producing the lock injury of water-setting gassing well liquid, can
The composition that production water-setting gassing well liquid lock injury will be used to handle effectively is put into pit shaft, gives full play to drug effect, thus
Well shut-in period plays the purpose of reservoir protection, and quickly reproducing after driving a well may be implemented.
The embodiment of the present invention is achieved in that
The present invention provides a kind of for handling the composition for producing the lock injury of water-setting gassing well liquid comprising liquid-proof locks medicament
With foam discharging agent；In parts by weight, liquid-proof lock medicament include 80 parts of fluorocarbon surfactant 60-, 10-20 parts of clay stabilizer with
And 10-20 parts of high temperature cleanup additive.
Wherein, liquid-proof lock medicament can be effectively improved well for putting into condensate gas well with pressure before the closing well that happens suddenly
The physicochemical properties of cylinder hydrops, when liquid-proof lock medicament dissolution is after wellbore effusion, wellbore effusion will have improvement reservoir wet
Lubricant nature, the effect for reducing gas-liquid interface tension, to reduce the power of wellbore effusion reverse osmosis, i.e. capillary force, and then reach suppression
Wellbore effusion processed reverse osmosis during closing well enters the purpose of reservoir；Foam discharging agent be used for drive a well reproduce before put into it is with pressure solidifying
In gassing well, it can be dissolved in wellbore effusion, mix and generate foam with wellbore effusion in wellbore environment, change pit shaft product
The fluidised form of liquid increases the pressure difference of shaft bottom production gas, then enhancing drives a well to reduce head of liquid caused by wellbore effusion
Afterwards in stratum gas phase mobility, achieve the purpose that quickly to reproduce.Fluorocarbon surfactant has high surface-active, energy
Enough extremely low using the surface tension for significantly reducing aqueous solution under concentration, 0.1%-0.3% can be by aqueous solution under normal conditions
Surface tension drops to 18-20dyn/cm；Clay stabilizer can be effectively adsorbed in surface of clay, prevent water sensitivity mineral aquation
Expansion and dispersion are migrated and are injured caused by oil-gas Layer, and the stability of reservoir can be effectively promoted；High temperature cleanup additive is one
Kind can help to be acidified, the work raffinate in the operation process such as pressure break returns the chemicals of row from stratum, opened with very low interface
Power, it is lower to the adsorption capacity on stratum, it does not have an effect to other working solutions, while not generating injury to stratum, it can be into one
Step reduces the surface tension of hydrops.Fluorocarbon surfactant, clay stabilizer and high temperature cleanup additive are mixed according to the above mentioned proportion
After mixing with wellbore effusion, the physicochemical property of wellbore effusion is improved obtained liquid-proof lock medicament, greatly reduces pit shaft
The surface tension of hydrops, and the ability for improving reservoir rock wetability is made it have, reaching reduces pit shaft product in well shut-in period
The purpose of liquid reverse osmosis injures to prevent reservoir and lock in well shut-in period from liquid.Foam discharging agent is medicament commonly used in the art,
Component generally comprises dodecyl sodium sulfate, fatty alcohol polyoxyethylene ether, acrylic resin, sodium bicarbonate and urea etc., tool
Body can refer to the foam discharging agent in CN106190080A.
Further, liquid-proof lock medicament and the equal boil down to solid article of foam discharging agent, every liquid-proof lock 0.4-0.6 kilograms of medicament,
Every 0.4-0.6 kilograms of foam discharging agent.
Liquid-proof locks medicament and the equal boil down to solid-state of foam discharging agent, in boil down to solid-state one side convenient transportation and investment well, separately
On the one hand it can prevent from dispersing during investment, guarantee to occur that reaction in effective environment in its certain investment wellbore effusion.
Every liquid-proof locks 0.4-0.6 kilograms of medicament, every 0.4-0.6 kilograms of foam discharging agent.The configuration convenient transportation, filling and investment are grasped
Make, and takes into account the controllability of dosage to a certain extent.
The present invention also provides a kind of for handling the method for producing the lock injury of water-setting gassing well liquid, includes the following steps:
S1, before the closing well that happens suddenly, by any one of the above liquid-proof lock medicament by several times put into condensate gas well with pressure；This step
Suddenly it can effectively inhibit wellbore effusion reverse osmosis during closing well to enter reservoir, prevent the reservoir hair in nearly pit shaft area after closing well
Raw liquid lock injury, provides precondition quickly to drive a well to reproduce.
S2, before driving a well and reproducing, any one of the above foam discharging agent is put into condensate gas well with pressure by several times.This step energy
Head of liquid caused by wellbore effusion is enough effectively reduced, increases the pressure difference of shaft bottom production gas, stratum after then enhancing drives a well
The mobility of middle gas phase achievees the purpose that quickly to reproduce.
Further, the initial velocity of liquid-proof lock medicament investment is 5-10m/s；The initial velocity of foam discharging agent investment is 5-
10m/s。
The investment initial velocity can be such that medicament reaches at reaction environment rapidly, and can prevent from putting into a certain extent
Path deviations or medicament dispersion, reproduce success rate to strengthen in journey.
The single input amount that liquid-proof locks medicament is 1-3 kilograms, and investment number is 2-4 times；The single input amount of foam discharging agent is
1-3 kilograms, investment number is 2-4 times.The input amount and investment number can make the input amount of medicament reach reasonable value, then make
It obtains drug effect well to play, is further promoted and reproduce success rate.
The present invention also provides a kind of for handling the device for producing the lock injury of water-setting gassing well liquid comprising being used for will be above-mentioned
Composition puts into the well head administration device in condensate gas well with pressure, and the dispensing mouth of well head administration device is set to condensate gas well with pressure
Well head above.
Further, well head administration device includes medicament storage device, and medicament storage device includes multiple first medicine holding bins
With multiple second medicine holding bins, each first medicine holding bin can open or close independently of each other with each second medicine holding bin, medicament
Storage device includes medicament ejection boosting device, and medicament ejection boosting device is set on medicament storage device.
Further, medicament ejection boosting device is hydraulic catapult device or spring catapult-launching gear.
The beneficial effect of the embodiment of the present invention is:
The present invention provides a kind of for handling the composition for producing the lock injury of water-setting gassing well liquid, and one side passes through liquid-proof
Lock medicament reduces gas-liquid interface tension while improving the wettability of reservoir, to reduce the dynamic of wellbore effusion reverse osmosis
Power achievees the purpose that wellbore effusion reverse osmosis during closing well is inhibited to enter reservoir；On the other hand, it drives a well after reproducing, passes through
Foam discharging agent is put into pit shaft, reduces head of liquid caused by wellbore effusion, increases the pressure difference of shaft bottom production gas, in turn
The mobility for enhancing gas phase in stratum after driving a well, has achieved the purpose that quickly to reproduce.Another object is to provide a kind of for locating
The method that reason produces the lock injury of water-setting gassing well liquid, it is easy to operate, construction efficiency is high, implementation result is good, it can using this method
Injury of the effectively pre- liquid-proof lock to water condensate gas well is produced, reproduces it quickly.Another object is to provide a kind of for handling production
The device of water-setting gassing well liquid lock injury, the composition that will can be used to handle production water-setting gassing well liquid lock injury are effectively thrown
Enter in pit shaft, give full play to drug effect, to achieve the purpose that quickly reproduce after driving a well.
Detailed description of the invention
Fig. 1 is provided in an embodiment of the present invention for handling the first signal for producing the device of water-setting gassing well liquid lock injury
Figure；
Fig. 2 is provided in an embodiment of the present invention for handling second of signal for producing the device of water-setting gassing well liquid lock injury
Figure.
Marked in the figure: 1- is used to handle the device for producing the lock injury of water-setting gassing well liquid；10- well head administration device；101- medicine
Agent storage device；The first medicine holding bin of 1011-；The second medicine holding bin of 1012-；1013- medicament ejection boosting device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description:
Fig. 1 and Fig. 2 are please referred to, produces the lock injury of water-setting gassing well liquid for handling the embodiment of the invention also provides a kind of
Device 1, for realizing the investment of any one of the above liquid-proof lock medicament and foam discharging agent comprising well head administration device 10, well
The dispensing mouth of mouth administration device 10 is set to above the well head of condensate gas well with pressure, is installed in this and is used to handle production water condensate gas well
Medicament in the device 1 of liquid lock injury is by the throwing effect of well head administration device 10 from top to bottom into condensate gas well with pressure
Well head, and finally move in wellbore effusion and react with hydrops.
Further, well head administration device 10 includes medicament storage device 101, and medicament storage device includes multiple first storages
Medicine storehouse 1011 and multiple second medicine holding bins 1012, each first medicine holding bin 1011 can mutually solely with each second medicine holding bin 1012
It on the spot opens or closes, wherein the first medicine holding bin 1011 places above-mentioned liquid-proof lock medicament, the second medicine holding bin 1012 for storing
Above-mentioned foam discharging agent is placed for storing, the first medicine holding bin 1011 and the second opening and closing independently of each other of medicine holding bin 1012, to realize anti-
Liquid lock medicament and foam discharging agent put into operation independently of each other, and multiple medicine holding bins can realize the multiple investment of medicament respectively.
Further, medicament storage device 101 further includes medicament ejection boosting device 1013, is set to medicament storage dress
It sets on 101, is used to provide initial investment speed in medicament storage device 101 for the agent to be offerd medicine stored, it can be by existing
Any one structure in technology is realized, such as pressurization catapult-launching gear, spring catapult-launching gear, electromagnetic launch device etc..Medicament bullet
Penetrating assist device 1013 enables to medicament to reach at reaction environment rapidly, and can prevent investment process Road to a certain extent
Line offset or medicament dispersion, reproduce success rate to strengthen.
Preferably, medicament ejection boosting device 1013 is pressurization catapult-launching gear or spring catapult-launching gear.It is pressurized catapult-launching gear
All have that structure is simple with spring catapult-launching gear, the high advantage of operability, and structural stability is strong, is hardly damaged.This hair
Pressurization catapult-launching gear in bright embodiment can be realized with spring catapult-launching gear by any one mode in the prior art.
Below in conjunction with specific embodiment to provided by the invention a kind of for handling the group for producing the lock injury of water-setting gassing well liquid
Close object, method does further detailed description.
Embodiment 1
Present embodiments provide a kind of composition for preventing to produce the lock injury of water-setting gassing well liquid for well shut-in period comprising
Liquid-proof locks medicament and foam discharging agent, and in parts by weight, it includes 60 parts of fluorocarbon surfactant, 20 parts of clay stabilizer that liquid-proof, which locks medicament,
And 10 parts of high temperature cleanup additive.
Further, liquid-proof lock medicament and the equal boil down to solid-state of foam discharging agent, every liquid-proof lock 0.4 kilogram of medicament, every bubble
0.6 kilogram of agent of row.
The present embodiment additionally provides a kind of method for producing the lock injury of water-setting gassing well liquid for well shut-in period prevention reservoir, packet
Include following steps:
S1, before the closing well that happens suddenly, liquid-proof that above-mentioned composition includes lock medicament is put into condensate gas well with pressure by several times.
Investment initial velocity is 10m/s, and single input amount is 3 kilograms, and investment number is 2 times.
S2, before driving a well and reproducing, the foam discharging agent that above-mentioned composition includes is put into condensate gas well with pressure by several times.Investment
Initial velocity is 5m/s, and single input amount is 1 kilogram, and investment number is 4 times.
The present embodiment additionally provides a kind of for handling the device 1 for producing the lock injury of water-setting gassing well liquid comprising well head is thrown
Medicine device 10, the dispensing mouth of well head administration device 10 are set to above the well head of condensate gas well with pressure, and well head administration device 10 wraps
Include medicament storage device 101, medicament storage device includes multiple first medicine holding bins 1011 and multiple second medicine holding bins 1012, each
First medicine holding bin 1011 can open or close independently of each other with each second medicine holding bin 1012, meanwhile, medicament storage device
101 further include medicament ejection boosting device 1013, is set on medicament storage device 101, and in the present embodiment, medicament ejection is helped
Pushing device 1013 is hydraulic catapult device.
Embodiment 2
In parts by weight, liquid-proof lock medicament includes that 80 parts of fluorocarbon surfactant, 10 parts of clay stabilizer and high temperature help
20 parts of agent of row, liquid-proof lock medicament and the equal boil down to solid-state of foam discharging agent, and every liquid-proof locks 0.6 kilogram of medicament, every foam discharging agent 0.4 thousand
Gram, remaining is consistent with embodiment 1.
Embodiment 3
In parts by weight, liquid-proof lock medicament includes that 70 parts of fluorocarbon surfactant, 15 parts of clay stabilizer and high temperature help
15 parts of agent of row, liquid-proof lock medicament and the equal boil down to solid-state of foam discharging agent, and every liquid-proof locks 0.5 kilogram of medicament, every foam discharging agent 0.5 thousand
Gram, remaining is consistent with embodiment 1.
Embodiment 4
In S1 step, the investment initial velocity that liquid-proof locks medicament is 5m/s, and single input amount is 1 kilogram, and investment number is 4
Secondary, remaining is consistent with embodiment 1.
Embodiment 5
In S2 step, the investment initial velocity of foam discharging agent is 10m/s, and single input amount is 3 kilograms, and investment number is 2 times,
Remaining is consistent with embodiment 1.
Comparative example 1
The foam discharging agent in embodiment 1 is removed, remaining is consistent with embodiment 1.
Comparative example 2
The liquid-proof removed in embodiment 1 locks medicament, remaining is consistent with embodiment 1.
Comparative example 3
In parts by weight, liquid-proof lock medicament includes that 45 parts of fluorocarbon surfactant, 30 parts of clay stabilizer and high temperature help
5 parts of agent of row, remaining is consistent with embodiment 1.
Comparative example 4
In S1 step, the investment initial velocity that liquid-proof locks medicament is 2m/s, and single input amount is 6 kilograms, and investment number is 1
Secondary, remaining is consistent with embodiment 1.
Comparative example 5
In S2 step, the investment initial velocity of foam discharging agent is 25m/s, and single input amount is 0.5 kilogram, and investment number is 7
Secondary, remaining is consistent with embodiment 1.
Comparative example 6
Liquid-proof locks medicament and the equal boil down to pasty fluid of foam discharging agent, remaining is consistent with embodiment 1.
Comparative example 7
Liquid-proof lock medicament is put by the way of freely falling body with foam discharging agent, remaining is consistent with embodiment 1.
Experimental example
12 mouthfuls similar to the condition of production produce water condensate gas well and are respectively adopted what embodiment 1-5 and comparative example 1-7 was provided
Composition, method and equipment are handled, record respectively and compare before five mouthfuls of urgent closing wells of production water condensate gas well with drive a well it is multiple
Liquid-column height (being 0 calculating according to shaft bottom liquid-column height) and daily gas amount situation of change, the results are shown in Table 1 in postpartum each pit shaft.
Table 1 produces water condensate gas well state table
As shown in Table 1, provided in an embodiment of the present invention a kind of for well shut-in period prevention production water-setting gassing well liquid lock injury
Composition, method and device can be substantially reduced the liquid-column height reproduced in rear pit shaft, and after significantly improving and reproducing
Produce tolerance daily.
In conclusion the present invention provides a kind of for handling the composition for producing the lock injury of water-setting gassing well liquid, one side
Medicament is locked by liquid-proof in face reduces gas-liquid interface tension while improving the wettability of reservoir, so that it is anti-to reduce wellbore effusion
The power of dialysis achievees the purpose that wellbore effusion reverse osmosis during closing well is inhibited to enter reservoir；On the other hand by driving a well
Foam discharging agent is put into wellbore effusion before reproducing, head of liquid caused by wellbore effusion is reduced, increases the producing pressure differential in shaft bottom,
Then the flow resistance for reducing gas phase has achieved the purpose that quickly to reproduce after driving a well.
The above is only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any to be based on
The transformation and replacement that technical solution provided by the present invention and inventive concept carry out should be covered by the scope of protection of the present invention.
Claims (7)
1. a kind of for handling the composition for producing the lock injury of water-setting gassing well liquid, which is characterized in that including liquid-proof lock medicament and bubble
Arrange agent；
In parts by weight, liquid-proof lock medicament include 60-80 parts of fluorocarbon surfactant, 10-20 parts of clay stabilizer and
10-20 parts of high temperature cleanup additive.
2. according to claim 1 for handling the composition for producing the lock injury of water-setting gassing well liquid, which is characterized in that described
Liquid-proof locks medicament and the equal boil down to solid article of the foam discharging agent, and every liquid-proof locks 0.4-0.6 kilograms of medicament, every bubble
0.4-0.6 kilograms of agent of row.
3. a kind of for handling the method for producing the lock injury of water-setting gassing well liquid, which comprises the steps of:
S1, before the closing well that happens suddenly, by liquid-proof described in claim 1 lock medicament by several times put into condensate gas well with pressure；
S2, before driving a well and reproducing, foam discharging agent described in claim 1 is put into condensate gas well with pressure by several times.
4. according to claim 3 for handling the method for producing the lock injury of water-setting gassing well liquid, which is characterized in that described anti-
The initial velocity that liquid locks medicament investment is 5-10m/s；The initial velocity of the foam discharging agent investment is 5-10m/s.
5. a kind of for handling the device for producing the lock injury of water-setting gassing well liquid, which is characterized in that it includes for by claim 1
The composition puts into the well head administration device in condensate gas well with pressure, and the dispensing mouth of the well head administration device is set to pressure
Above the well head of condensate gas well.
6. according to claim 5 for handling the device for producing the lock injury of water-setting gassing well liquid, which is characterized in that the well
Mouth administration device includes medicament storage device, and the medicament storage device includes multiple first medicine holding bins and multiple second drug storages
Storehouse, each first medicine holding bin can open or close independently of each other with each second medicine holding bin, and the medicament is deposited
Storage device further includes medicament ejection boosting device, and the medicament ejection boosting device is set on the medicament storage device.
7. according to claim 6 for handling the device for producing the lock injury of water-setting gassing well liquid, which is characterized in that the medicine
Agent ejection boosting device is hydraulic catapult device or spring catapult-launching gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351701.2A CN110003876A (en) | 2019-04-28 | 2019-04-28 | For handling the composition, method and the device that produce the lock injury of water-setting gassing well liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351701.2A CN110003876A (en) | 2019-04-28 | 2019-04-28 | For handling the composition, method and the device that produce the lock injury of water-setting gassing well liquid |
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| CN110003876A true CN110003876A (en) | 2019-07-12 |
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Application publication date: 20190712 |
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