CN105154052A - Gas well foam scrubbing ball and preparation method thereof - Google Patents
Gas well foam scrubbing ball and preparation method thereof Download PDFInfo
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- CN105154052A CN105154052A CN201510625494.7A CN201510625494A CN105154052A CN 105154052 A CN105154052 A CN 105154052A CN 201510625494 A CN201510625494 A CN 201510625494A CN 105154052 A CN105154052 A CN 105154052A
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- core body
- vollyball
- bubble
- bubble vollyball
- polyvinyl alcohol
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/06—Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase
Abstract
The invention relates to a gas well foam scrubbing ball and a preparation method thereof. The foam scrubbing ball is mainly composed of a spherical core body made of a foam scrubbing agent and a soluble coating with which the core body is coated, and at least one radial small hole which is communicated to the core body is formed in the coating. The preparation method comprises the steps that (1) raw materials of the foam scrubbing ball body are mixed and stirred uniformly, melted and evaporated, and the water content in the mixture is enabled to be smaller than or equal to 5%; (2) the mixture is kneaded into a paste; the pasted is squeezed into a die to obtain the spherical core body; (3) a polyvinyl alcohol solution is sprayed to the spherical core body to obtain an initial product of a foam scrubbing ball; (4) the initial product of the foam scrubbing ball is fed into drying equipment to be dried and obtain a semi-finished product of the foam scrubbing ball; (5) the surface of the semi-finished product of the foam scrubbing ball is treated, holes are formed in the foam scrubbing ball, and a finished product of the foam scrubbing ball is obtained. The foam scrubbing ball is not easy to be smashed in a falling process, can go deep into hydrops, and after the foam scrubbing ball is mixed with the hydrops, the dissolution rate can be controlled, the action time is long, and the liquid carrying efficiency is high.
Description
Technical field
The present invention relates to bubble vollyball, specifically a kind of gas well bubble vollyball and preparation method thereof.
Background technology
Along with the long period of development of gas reservoir, producing energy constantly declines and condensation water is constantly separated out, and causes hydrops in gas well to increase.For solving the problem because of pit shaft hydrops impact production, usually the measure taked is that filling contains the foam discharging agent bubbled with steady bubble effect in pit shaft, a large amount of low density resistance aqueous foam is produced after hydrops is contacted with foam discharging agent, foam is taken water and from shaft bottom to ground, is discharged pit shaft with air-flow, reach discharge pit shaft hydrops and realize stable yields volume increase object.
Conventional bubble scheduling product mainly adopt foam discharging agent and solid bubble rod row.Mix with hydrops rapidly after foam discharging agent enters pit shaft and bubble, particularly by oil pipe annotate also exist foam discharging agent be mainly distributed in hydrops top, shaft bottom formed afloat, be difficult to reach shaft bottom, a large amount of promoting agent in the hydrops of upper strata is caused to be discharged rapidly outside well when not playing one's part to the full, so liquid filling mode has short, inefficient feature action time, maximum resource utilization can not be realized; And bubble rod row is when being applied to the well of downhole tubular rod structure complexity, especially in long horizontal traverse well, there will be long strip shape bubble rod row in pit shaft in dropping process by midway blocking case, hydrops section cannot be entered, have impact on bubble row effect.
In order to solve above routine bubble scheduling product existing problems, researchist has carried out bubble vollyball research and apply.Such as Chinese patent literature disclosed " gas well bubble vollyball and preparation method " (publication number: CN103468234A; Publication date: 2013.12.25), this technology foam discharging agent is made the sphere of volume compact, and it is not easily stuck in dropping process, can sink to pit shaft comparatively deep location in hydrops, and the feature of dissolving from inside to outside makes it also have certain slow releasing effect.But bubble vollyball dropping process in pit shaft of this technology easily breaks up, and still exist dissolve fast, action time is short, take the inefficient problem of liquid.
Summary of the invention
The object of the invention is to: for the deficiency of above technology, provide a kind of and not easily break up, dissolution rate can realize controlling, take the high gas well of liquid efficiency steeps vollyball and preparation method thereof.
The technical solution adopted in the present invention is:
A kind of gas well bubble vollyball, described bubble vollyball is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and described dressing is provided with the radial hole that at least one passes to core body.
Aperture on described dressing is 10 ~ 20.
The diameter of described aperture is 3 ~ 5mm.
The core body proportioning raw materials of described bubble vollyball is calculated by following mass percent:
C
12~ C
18long chain alkane amido propyl betaine 30 ~ 40%,
Varion CDG-K 30 ~ 40%,
C
12~ C
16long chain alkyl dimethyl ammonium chloride 10 ~ 20%,
Guanidine rubber powder 1 ~ 5%,
Polyvinyl alcohol 1 ~ 5%.
The dressing of described bubble vollyball is polyvinyl alcohol.Further, alcoholysis degree >=85% of described polyvinyl alcohol.
The preparation method of above-mentioned gas well bubble vollyball, comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 100 ~ 120 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 100 ~ 120 DEG C, pressure is 2 ~ 10MPa, constant voltage time prepares spheroid under being the condition of 1 ~ 10min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 5 ~ 10%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 100 ~ 120 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
The invention has the beneficial effects as follows:
1. the present invention is provided with dressing that is with holes, that can dissolve outside bubble vollyball core body; controlled core body dissolved release by coatings protect, it not easily breaks up in dropping process, can in deep enough hydrops; after mixing with hydrops, its dissolution rate can realize control, long action time, it is high to take liquid efficiency.
2. bubble vollyball core body of the present invention adopts formula collaborative compatibility mutually, there is good heatproof, anti-salt, condensate oil performance and dynamically take water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves more than 12% than common bubble vollyball, improves 47% than common foam discharging agent.
Embodiment
Embodiment 1
The present invention is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and this dressing is the polyvinyl alcohol of alcoholysis degree >=85%.Dressing offers the aperture of corresponding design requirements, and each aperture passes to core surface in a radial manner; The dressing of a bubble vollyball offers aperture 20, and the diameter of each aperture is 3-5mm.
The raw materials of above-mentioned core body is: cocamidopropyl betaine 400g, Varion CDG-K 400g, dodecyl dimethyl ammonium chloride 100g, guanidine rubber powder 50g, polyvinyl alcohol 50g.
Preparation method of the present invention comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 100 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 100 DEG C, pressure is 2MPa, constant voltage time prepares spheroid under being the condition of 10min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 5%, by polyvinyl alcohol solution even application in step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 100 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
This kind of bubble vollyball has good heatproof, anti-salt, condensate oil performance and dynamically takes water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves 12.5% than common bubble vollyball, improves 47.5% than conventional foam discharging agent.
Embodiment 2
The present invention is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and this dressing is the polyvinyl alcohol of alcoholysis degree >=85%.Dressing offers the aperture of corresponding design requirements, and each aperture passes to core surface in a radial manner; The dressing of a bubble vollyball offers aperture 18, and the diameter of each aperture is 3-5mm.
The raw materials of above-mentioned core body is: amine hydroxybenzene base CAB 400g, Varion CDG-K 300g, dodecyl dimethyl ammonium chloride 200g, guanidine rubber powder 50g, polyvinyl alcohol 50g.
Preparation method of the present invention comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 105 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 105 DEG C, pressure is 4MPa, constant voltage time prepares spheroid under being the condition of 8min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 6%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 105 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
This kind of porous coated bubble vollyball has good heatproof, anti-salt, condensate oil performance and dynamically takes water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves 13.1% than common bubble vollyball, improves 49% than conventional foam discharging agent.
Embodiment 3
The present invention is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and this dressing is the polyvinyl alcohol of alcoholysis degree >=85%.Dressing offers the aperture of corresponding design requirements, and each aperture passes to core surface in a radial manner; The dressing of a bubble vollyball offers aperture 16, and the diameter of each aperture is 3-5mm.
The raw materials of above-mentioned core body is: cocamidopropyl betaine 350g, Varion CDG-K 400g, hexadecyldimethyl benzyl ammonium ammonium chloride 150g, guanidine rubber powder 50g, polyvinyl alcohol 50g.
Preparation method of the present invention comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 110 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 110 DEG C, pressure is 6MPa, constant voltage time prepares spheroid under being the condition of 7min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 7%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 110 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
This kind of porous coated bubble vollyball has good heatproof, anti-salt, condensate oil performance and dynamically takes water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves 13.5% than common bubble vollyball, improves 47% than conventional foam discharging agent.
Embodiment 4
The present invention is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and this dressing is the polyvinyl alcohol of alcoholysis degree >=85%.Dressing offers the aperture of corresponding design requirements, and each aperture passes to core surface in a radial manner; The dressing of a bubble vollyball offers aperture 14, and the diameter of each aperture is 3-5mm.
The raw materials of above-mentioned core body is: amine hydroxybenzene base CAB 400g, Varion CDG-K 380g, hexadecyldimethyl benzyl ammonium ammonium chloride 120g, guanidine rubber powder 50g, polyvinyl alcohol 50g.
Preparation method of the present invention comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 115 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 115 DEG C, pressure is 8MPa, constant voltage time prepares spheroid under being the condition of 6min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 8%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 115 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
This kind of porous coated bubble vollyball has good heatproof, anti-salt, condensate oil performance and dynamically takes water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves 12.7% than common bubble vollyball, improves 50% than conventional foam discharging agent.
Embodiment 5
The present invention is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and this dressing is the polyvinyl alcohol of alcoholysis degree >=85%.Dressing offers the aperture of corresponding design requirements, and each aperture passes to core surface in a radial manner; The dressing of a bubble vollyball offers aperture 12, and the diameter of each aperture is 3-5mm.
The raw materials of above-mentioned core body is: cocamidopropyl betaine 400g, Varion CDG-K 350g, dodecyl dimethyl ammonium chloride 200g, guanidine rubber powder 50g, polyvinyl alcohol 20g.
Preparation method of the present invention comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 120 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 120 DEG C, pressure is 10MPa, constant voltage time prepares spheroid under being the condition of 5min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 10%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 120 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
This kind of porous coated bubble vollyball has good heatproof, anti-salt, condensate oil performance and dynamically takes water-based energy, salinity lower than 100000mg/L, oil-contg lower than 90 DEG C of shaft bottom hydrops of 5% in the continuous action time long, 24h liquid carry over improves 14.1% than common bubble vollyball, improves 48.6% than conventional foam discharging agent.
Claims (7)
1. a gas well bubble vollyball, is characterized in that, described bubble vollyball is primarily of the foam discharging agent spherical core body made and the solubilized dressing composition be coated on core body, and described dressing is provided with the radial hole that at least one passes to core body.
2. gas well is with steeping vollyball according to claim 1, and it is characterized in that, the aperture on described dressing is 10 ~ 20.
3. gas well bubble vollyball according to claim 1 or 2, it is characterized in that, the diameter of described aperture is 3 ~ 5mm.
4. gas well, with steeping vollyball, is characterized in that according to claim 1, and the core body proportioning raw materials of described bubble vollyball is calculated by following mass percent:
C
12~ C
18long chain alkane amido propyl betaine 30 ~ 40%,
Varion CDG-K 30 ~ 40%,
C
12~ C
16long chain alkyl dimethyl ammonium chloride 10 ~ 20%,
Guanidine rubber powder 1 ~ 5%,
Polyvinyl alcohol 1 ~ 5%.
5. gas well is with steeping vollyball according to claim 1, and it is characterized in that, the dressing of described bubble vollyball is polyvinyl alcohol.
6. gas well, with steeping vollyball, is characterized in that, alcoholysis degree >=85% of described polyvinyl alcohol according to claim 5.
7. the preparation method for bubble vollyball of gas well described in claim 1, comprises the following steps:
1). the raw material of preparation bubble vollyball core body is mixed, and stirs; Carry out melting and evaporating under 100 ~ 120 DEG C of conditions, make percent mass water content≤5% of compound;
2). the compound of step 1) is sent into kneader and mediates, obtain paste; Paste is clamp-oned in mould, temperature be 100 ~ 120 DEG C, pressure is 2 ~ 10MPa, constant voltage time prepares spheroid under being the condition of 1 ~ 10min; Cooling, obtains spherical core body after the demoulding;
3). adopt distilled water diluting polyvinyl alcohol, obtain the polyvinyl alcohol solution that concentration is 5 ~ 10%, polyvinyl alcohol solution is sprayed on step 2) spherical core body on, until the coating thickness on core body reaches design load, obtain bubble vollyball first product;
4). the bubble vollyball first product of step 3) is sent in drying plant, dries under 100 ~ 120 DEG C of conditions, make the dressing dehydration of bubble vollyball, obtain bubble vollyball work in-process;
5). the bubble vollyball work in-process of step 4) are carried out surface treatment, and output aperture according to design requirements on the dressing of bubble vollyball, each aperture is deep to core surface, obtains bubble vollyball finished product.
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| CN201510625494.7A CN105154052B (en) | 2015-09-28 | 2015-09-28 | A kind of gas well bubble vollyball and preparation method thereof |
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| CN201510625494.7A CN105154052B (en) | 2015-09-28 | 2015-09-28 | A kind of gas well bubble vollyball and preparation method thereof |
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| CN105154052B CN105154052B (en) | 2018-05-25 |
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| CN105525899A (en) * | 2016-01-26 | 2016-04-27 | 重庆科技学院 | Special foam drainage method for low-gas-yield water-flooded well, foam drainage agent and foam drainage device |
| CN105754577A (en) * | 2016-02-19 | 2016-07-13 | 黑龙江勇峰化工添加剂有限公司 | Novel efficient foaming flowback agent |
| CN106190080A (en) * | 2016-07-14 | 2016-12-07 | 西南石油大学 | A kind of spherical solid foam discharging agent for natural gas fluctuating horizontal well |
| CN106221687A (en) * | 2016-07-21 | 2016-12-14 | 中国石油天然气股份有限公司长庆油田分公司 | A kind of gas field foam drainage rod and preparation method thereof |
| CN106433594A (en) * | 2016-08-30 | 2017-02-22 | 西咸新区海创化工科技有限公司 | Anti-freezing foam drainage agent and preparation method thereof |
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