CN104342103A - A foam gelling acid, and preparation, a using method and applications thereof - Google Patents
A foam gelling acid, and preparation, a using method and applications thereof Download PDFInfo
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- CN104342103A CN104342103A CN201310332164.XA CN201310332164A CN104342103A CN 104342103 A CN104342103 A CN 104342103A CN 201310332164 A CN201310332164 A CN 201310332164A CN 104342103 A CN104342103 A CN 104342103A
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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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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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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- 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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
- C09K8/703—Foams
-
- 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
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/725—Compositions containing 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
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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
- C09K8/84—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
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- C09K2208/26—Gel breakers other than bacteria or enzymes
Abstract
The invention relates to a foam gelling acid. The foam gelling acid comprises 0.5-2.0% by weight of an ampholytic surfactant, 10-25% by weight of hydrochloric acid, 0.1-0.7% by weight of polymer, 1-2% by weight of a corrosion inhibitor, 0.02-0.05% by weight of a gel breaker and water, with the total foam gelling acid being 100% by weight. The invention also relates to a preparing method and a using method of the foam gelling acid.
Description
Technical field
The present invention relates to a kind of foam gelled acid, be specifically related to a kind of oilfield stimulation foam gelled acid.
Background technology
Gelled acid and construction technology thereof are a kind of oil, gas yield-increasing technologies newly that external the seventies grows up, its essence adds a kind of viscosifying agent of good performance exactly in acid solution, add the viscosity that viscosifying agent can improve acid solution, reduce the velocity of diffusion of active acid to fracture plane, the colloid reticulated structure simultaneously formed can organize hydrionic activity effectively, thus acid solution spending rate is reduced, increase the operating distance of acid solution, delay the reaction times of sour rock, increase the width in crack, improve the rate of permeation on stratum.
Compared with conventional acidulation, gelled acid has good slow, filtrate reducing, makes seam, takes sand and resistance reducing performance, and can alleviate secondary injury, is a kind of effective acid working fluid of generally acknowledging at present.
In current prior art, Chinese patent CN4237975 discloses a kind of foamed acid and gel acid with the use of the method improving solubility reservoir oil well output, and wherein the pore forming material of foamed acid adopts cocoa trimethyl ammonium chloride and two cocoa amine oxide compounds (2-hydroxyethyl) to form according to 45:55 ~ 85:15 proportions.Foamed acid of the present invention and gel acid adhere to two kinds of different systems separately, there is the shortcomings such as many with the use of influence factor, system is unstable, construction is complicated.
Chinese patent CN102094614A discloses foam acid de-plugging technology, adds pore forming material and suds-stabilizing agent, (mostly generally be N by frothing machine and gas in conventional Compound-acid liquid system
2or CO
2) mixing, to be formed with acid be external phase, bubble for the foam system of disperse phase, which kind of pore forming material of unreceipted employing.The present invention exists system viscous resistance can be poor, usually cannot carry enough propping agents, can not reach object of specifically constructing.
Chinese patent CN101718184A discloses a kind of foamed acid washing technological method for horizontal well, by installing two pkrs at lateral segment, foamed acid washing lotion is injected from annular space, acid solution is flowed outward at screen casing, the pore forming material adopted is sodium laurylsulfonate or Sodium dodecylbenzene sulfonate, and this pore forming material is aniorfic surfactant.The present invention is only limitted to acid cleaning process, cannot reach acid fracturing requirement.
Chinese patent CN1836090 self-diverting foamed system, described diversion agent is acidic viscoelastic surfactant system that is that energize or foaming, and what this system adopted is have viscoelastic Inner ammonium salt cationic surfactant.Multiviscosisty poor performance of the present invention, heat resistance is poor, cannot meet specific construction demand.
But the foamed acid pore forming material used at present mainly adopts anionic and cationic surfactant, its lathering property in acid solution is restricted, and foaming volume is less than 360ml in acid condition, and half foam life period is 30min only.The concern received due to amphoterics is in addition less, also not about the report of gelled acid using amphoteric ionic surfactant in prior art.
Summary of the invention
The object of the present invention is to provide a kind of foam gelled acid, with amphoteric ionic surfactant as pore forming material, improve foamed acid lathering property, with high molecular polymer as viscosifying agent, improve the viscosity of foam gelled acid.The foam gelled acid of invention has the feature of high viscosity, low liquid-tight degree, to obtain lower acid-rock reaction speed, the acid penetration degree of depth far away, good stifled temporarily steering qualities, good fractured rock, good to carry propping agent supporting crack.In acid fracturing process, the foam gelled acid of invention make rock produce crack and corrosion rock to improve the perviousness on stratum, in low pressure reservoirs, reduce reservoir damage simultaneously, improve Oil/gas Well output.
To achieve these goals, the invention provides following technical scheme:
1) a foam gelled acid is 100 % by weight in its overall foaming acid, comprises 0.5-2.0 % by weight amphoterics, 10-25 % by weight hydrochloric acid, 0.1-0.7 % by weight high molecular polymer, 1-2 % by weight inhibiter and 0.02-0.05 % by weight gel breaker.
2) the of the present invention 1st) in a preferred implementation of item, described foam gelled acid is only made up of the water of 0.5-2.0 % by weight amphoterics, 10-25 % by weight hydrochloric acid, 0.1-0.7 % by weight high molecular polymer, 1-2 % by weight inhibiter, 0.02-0.05 % by weight gel breaker and surplus.
3) the of the present invention 1st) or the 2nd) in a preferred implementation of item, described amphoterics is amine oxide.
4) the of the present invention 3rd) in a preferred implementation of item, described amine oxide is the alkyl dimethyl amine oxide such as shown in general formula I;
R-N(CH
3)
2→O I
Wherein, R is C
12-18alkyl.
5) the of the present invention 1st)-4) in a preferred implementation any one of item, described high molecular polymer is selected from least one in cation polypropylene sodium salt, carboxymethyl cellulose, guanidine glue or xanthan gum, is preferably cation polypropylene sodium salt.
6) the of the present invention 1st)-5) in a preferred implementation any one of item, described inhibiter is selected from least one in formaldehyde, propiolic alcohol, butynol, l-hexyn-3-ol, octyne alcohol or 2-alkenylphenyl ketone.
7) the of the present invention 1st)-6) in a preferred implementation any one of item, described gel breaker is selected from Sulfothiorine and/or microcapsule degelling agent.
8) the a kind of of the present invention 1st)-7) preparation method of foam gelled acid according to any one of item, comprise and add successively in mass ratio or add amphoterics, inhibiter, hydrochloric acid, high molecular polymer, gel breaker and water simultaneously.
9) the a kind of of the present invention 1st)-7) using method of foam gelled acid according to any one of item, in described foam gelled acid, add calcium carbonate reaction produce carbonic acid gas foaming or lead to nitrogen gas stirring foaming, so make described foam gelled acid bubble to use.
10) the a kind of of the present invention 1st)-7) oil of foam gelled acid in oil field according to any one of item, the application in gas volume increase.
The amphoterics used in foam gelled acid of the present invention, the foaming volume of 100ml foam gelled acid of the present invention is made to reach 500-800ml, particularly use amine oxide amphoterics, shown in preferred use general formula I during alkyl dimethyl amine oxide, the foaming volume of described foam gelled acid can reach 650-800ml.
R-N(CH
3)
2→O I
There is no particular limitation for the high molecular polymer used in foam gelled acid of the present invention, preferably uses at least one in cation polypropylene sodium salt, carboxymethyl cellulose, guanidine glue or xanthan gum, be preferably cation polypropylene sodium salt, have the advantage that cost is low.
There is no particular limitation for the inhibiter used in foam gelled acid of the present invention, at least one preferably in formaldehyde, propiolic alcohol, butynol, l-hexyn-3-ol, octyne alcohol or 2-alkenylphenyl ketone.
Also there is no particular limitation for the gel breaker used in foam gelled acid of the present invention, preferred Sulfothiorine, and it has, and the source of goods is wide, low cost and other advantages, or selects microcapsule degelling agent, and it has the advantages such as far away, the broken glue of acid solution carry distance is easy to control.
Beneficial effect of the present invention is:
The foam gelled acid of invention has the feature of high viscosity, low liquid-tight degree, to obtain lower acid-rock reaction speed, the acid penetration degree of depth far away, good stifled temporarily steering qualities, good fractured rock, good to carry propping agent supporting crack.On the whole, the present invention has following technical characterstic and excellent results:
(1) the foam gelled acid lather volume of 100ml can reach more than 500ml.
(2) foam stabilization is formed, transformation period 60min.
(3) foam gelled acid is at normal pressure, viscosity remains on 30-50mPas at 100 DEG C.
(4) after foam gelled acid breaks glue, viscosity is less than or equal to 5mPas.
(5) form foam gelled acid foaming properties to stablize, low damage is effective, and acid-rock reaction speed is little, carries propping agent excellent property, can realize the object of degree of depth transformation.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail, but scope of the present invention is not limited to following examples.
Embodiment 1:
With the foam gelled acid of 20 % by weight HCl, 0.35 % by weight guanidine glue, 1 % by weight formaldehyde, 0.5 % by weight CH3-(CH2)13N(CH3)2-O, 0.03 % by weight Sulfothiorine and water preparation, then use nitrogen carry out foaming to it and add propping agent simultaneously, measuring performance index are as follows:
(1) foam gelled acid lather volume 552ml.
(2) foam stabilization is formed, transformation period 32min.
(3) foam gelled acid is at normal pressure, viscosity 33mPas at 100 DEG C.
(4) foam gelled acid breaks viscosity 3mPas after glue.
(5) form foam gelled acid and carry propping agent excellent property.
Embodiment 2
With the foam gelled acid of 10 % by weight HCl, 0.65 % by weight cation polypropylene sodium salt, 2 % by weight 2-alkenylphenyl ketone, 1 % by weight dimethyl dodecyl amine oxide, 0.05 % by weight microcapsule degelling agent and water preparation, then use nitrogen carry out foaming to it and add propping agent simultaneously, measuring performance index are as follows:
(1) foam gelled acid lather volume 593ml.
(2) foam stabilization is formed, transformation period 56min.
(3) foam gelled acid is at normal pressure, viscosity 58mPas at 100 DEG C.
(4) foam gelled acid breaks viscosity 2mPas after glue.
(5) form foam gelled acid and carry propping agent excellent property.
Embodiment 3
With the foam gelled acid of 15 % by weight HCl, 0.1 % by weight carboxymethyl cellulose, 1 % by weight propiolic alcohol, 2 % by weight octadecyl dimethyl amine oxides, 0.03 % by weight Sulfothiorine and water preparation, then use nitrogen carry out foaming to it and add propping agent simultaneously, measuring performance index are as follows:
(1) foam gelled acid lather volume 618ml.
(2) foam stabilization is formed, transformation period 44min.
(3) foam gelled acid is at normal pressure, viscosity 42mPas at 100 DEG C.
(4) foam gelled acid breaks viscosity 2mPas after glue.
(5) form foam gelled acid and carry propping agent excellent property.
The performance of the foamed acid of the present embodiment is as shown in table 1.
Comparative example 1
Adopt the acid of commercially available regular foam, according to the method described in embodiment 1 it foamed and measure its performance index.Specifically as shown in table 1.
Wherein, the proppants settle down time is longer, and illustrate that described foamed acid carries the performance of propping agent better, namely the dispersing property of described propping agent in described foamed acid is better.
Claims (10)
1. a foam gelled acid is 100 % by weight in its overall foaming acid, comprises 0.5-2.0 % by weight amphoterics, 10-25 % by weight hydrochloric acid, 0.1-0.7 % by weight high molecular polymer, 1-2 % by weight inhibiter and 0.02-0.05 % by weight gel breaker.
2. foam gelled acid according to claim 1, it is characterized in that, described foam gelled acid is only made up of the water of 0.5-2.0 % by weight amphoterics, 10-25 % by weight hydrochloric acid, 0.1-0.7 % by weight high molecular polymer, 1-2 % by weight inhibiter, 0.02-0.05 % by weight gel breaker and surplus.
3. foam gelled acid according to claim 1 and 2, is characterized in that, described amphoterics is amine oxide.
4. foam gelled acid according to claim 3, is characterized in that, described amine oxide is the alkyl dimethyl amine oxide such as shown in general formula I;
R-N(CH
3)
2→O I
Wherein, R is C
12-18alkyl.
5. foam gelled acid according to claim 1 and 2, is characterized in that, described high molecular polymer is selected from least one in cation polypropylene sodium salt, carboxymethyl cellulose, guanidine glue or xanthan gum, is preferably cation polypropylene sodium salt.
6. foam gelled acid according to claim 1 and 2, is characterized in that, described inhibiter is selected from least one in formaldehyde, propiolic alcohol, butynol, l-hexyn-3-ol, octyne alcohol or 2-alkenylphenyl ketone.
7. foam gelled acid according to claim 1 and 2, is characterized in that, described gel breaker is selected from Sulfothiorine and/or microcapsule degelling agent.
8. a preparation method for the foam gelled acid according to any one of claim 1-7, comprises and to add successively by described mass ratio or to add amphoterics, inhibiter, hydrochloric acid, high molecular polymer, gel breaker and water simultaneously.
9. the using method of the foam gelled acid according to any one of claim 1-7, in described foam gelled acid, add calcium carbonate reaction produce carbonic acid gas foaming or lead to nitrogen gas stirring foaming, so make described foam gelled acid bubble to use.
10. the application in the oil of foam gelled acid in oil field according to any one of claim 1-7, gas volume increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332164.XA CN104342103A (en) | 2013-08-01 | 2013-08-01 | A foam gelling acid, and preparation, a using method and applications thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310332164.XA CN104342103A (en) | 2013-08-01 | 2013-08-01 | A foam gelling acid, and preparation, a using method and applications thereof |
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| CN104342103A true CN104342103A (en) | 2015-02-11 |
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ID=52498579
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| CN201310332164.XA Pending CN104342103A (en) | 2013-08-01 | 2013-08-01 | A foam gelling acid, and preparation, a using method and applications thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107384355A (en) * | 2017-09-08 | 2017-11-24 | 广东石油化工学院 | Containing CO2Oil/gas Well foam corrosion inhibiter |
| CN107474811A (en) * | 2017-09-25 | 2017-12-15 | 中国石油大学(北京) | A kind of microfoam acid solution and preparation method thereof |
| CN110699061A (en) * | 2019-11-19 | 2020-01-17 | 成都北方石油勘探开发技术有限公司 | Composite acid liquid system for weak heterogeneity reservoir acidification and preparation method thereof |
| CN111621283A (en) * | 2020-06-24 | 2020-09-04 | 陕西丰登石化有限公司 | Thickening agent for high-water-content gas well foam acidizing fracturing and preparation and application thereof |
| CN113122221A (en) * | 2021-04-06 | 2021-07-16 | 西安石油大油气科技有限公司 | Acid liquor system for online acidification of water injection well for oil exploitation and preparation process thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107384355A (en) * | 2017-09-08 | 2017-11-24 | 广东石油化工学院 | Containing CO2Oil/gas Well foam corrosion inhibiter |
| CN107474811A (en) * | 2017-09-25 | 2017-12-15 | 中国石油大学(北京) | A kind of microfoam acid solution and preparation method thereof |
| CN107474811B (en) * | 2017-09-25 | 2020-03-27 | 中国石油大学(北京) | Micro-foam acid liquid and preparation method thereof |
| CN110699061A (en) * | 2019-11-19 | 2020-01-17 | 成都北方石油勘探开发技术有限公司 | Composite acid liquid system for weak heterogeneity reservoir acidification and preparation method thereof |
| CN111621283A (en) * | 2020-06-24 | 2020-09-04 | 陕西丰登石化有限公司 | Thickening agent for high-water-content gas well foam acidizing fracturing and preparation and application thereof |
| CN113122221A (en) * | 2021-04-06 | 2021-07-16 | 西安石油大油气科技有限公司 | Acid liquor system for online acidification of water injection well for oil exploitation and preparation process thereof |
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Application publication date: 20150211 |
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