CN104449632A - Oil-resistant foaming agent and preparation method thereof - Google Patents
Oil-resistant foaming agent and preparation method thereof Download PDFInfo
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- CN104449632A CN104449632A CN201410704531.9A CN201410704531A CN104449632A CN 104449632 A CN104449632 A CN 104449632A CN 201410704531 A CN201410704531 A CN 201410704531A CN 104449632 A CN104449632 A CN 104449632A
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- weight percentage
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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
Abstract
The invention belongs to the technical field of oil and gas field chemical engineering, and particularly relates to an oil-resistant foaming agent. The oil-resistant foaming agent comprises, in percentage by weight, 50-70% of alkyl propyl betaine, 5-15% of an anionic surfactant, 10-20% of cetyl trimethyl ammonium bromide and 10-20% of water. The oil-resistant foaming agent is high in foaming capacity and high in foam stability after added to water-producing gas wells, still high in liquid carrying capacity for gas-condensate-producing gas wells, and applicable to gas-condensate-containing water-producing gas wells with moderate mineralization degrees.
Description
Technical field
The invention belongs to oil-gas field chemical technology field, be specifically related to a kind of oil resistant pore forming material.
Background technology
Gasser is when normally producing, and liquid is carried to ground along with the stirring of air-flow, but when himself energy shortage is to carry liquid in well, just to need by artificial, to gas well supplementing energy, to make the fluid removal ground in gas well.
Foam drainage gas recovery relies on that its cost low, instant effect, equipment are simple, construction easily and do not affect the agent technology that advantage that gas well normally produces becomes most of gas fields water drainage-gas recovery technology, this technique mainly injects the tensio-active agent that certain can meet water foaming from well head to shaft bottom, after shaft bottom ponding contacts with pore forming material, by the stirring of natural gas flow, generate a large amount of low density resistance aqueous foam, be carried to ground with air-flow from shaft bottom.
Foaming water discharge agent (oil resistant pore forming material) more mainly has tensio-active agent and the high molecular polymer of special molecular structure, containing hydrophilic radical and lipophilic group on its molecule, have amphiphilic, the oily matter of a part in local water can be resisted, but for the gas well that condensate oil content is larger, existing foaming water discharge agent has little effect, and some gas well even occurs adding the phenomenon that a large amount of foam discharging agent still normally cannot take liquid production.Fluorocarbon surfactant oil resistant ability is comparatively strong, but it is expensive, and cost is too high, still cannot large-scale popularization use at present.
Summary of the invention
The object of the invention is to overcome the draining of existing oil resistant pore forming material and take liquid weak effect and the high problem of fluorocarbon surfactant cost.
For this reason, the invention provides a kind of oil resistant pore forming material, the cetyl trimethylammonium bromide that the anion surfactant that the alkyl CAB, the weight percentage that are 50 ~ 70% by weight percentage are 5 ~ 15%, weight percentage are 10 ~ 20%, weight percentage be 10 ~ 20% water form.
Described alkyl CAB is lauroylamidopropyl betaine.
Described anion surfactant is sodium cetanesulfonate.
Present invention also offers the preparation method of oil resistant pore forming material, preparation process is as follows: by weight percentage be 5 ~ 15% anion surfactant to add weight percentage be in proportion in the water of 10 ~ 20%, stir, add cetyl trimethylammonium bromide until completely dissolved, be stirred to and dissolve completely, finally add the alkyl CAB that weight percentage is 10 ~ 20%, stir and leave standstill 30min, to dissolving completely.
Described alkyl CAB weight percentage is 50%, and sodium cetanesulfonate 15% weight percentage is, cetyl trimethylammonium bromide weight percentage is 20%, and water weight percentage is 15%.
Beneficial effect of the present invention: oil resistant type pore forming material of the present invention adds water-producing gas well post-foaming ability by force, and froth stability is good, for product condensate well, fluid-carrying capability is still very strong, is applicable to moderate salinity, uses containing the water-producing gas well of condensate oil.
The anti-salinity ability 250g/L of this oil resistant pore forming material, condensate oil ability 30%, methanol tolerance ability 20%, under the condition of condensate oil content 30%, its foaming power can reach 122mm, and 15min takes liquid rate 62%, medicament validity period is long, and test in place oil/gas well stimulation rate is up to more than 74%.This product is nontoxic, easily degrade, can not to environment.This pore forming material can with the medicament compatibilities such as methyl alcohol, inhibiter, Scale inhibitors, there is not chemical reaction with gas, fluid component, do not increase the toxicity of gas and products of combustion, do not corrode e-quipment and pipe.
Embodiment
Embodiment 1:
Liquid weak effect and the high problem of fluorocarbon surfactant cost is taken in order to solve the draining of existing oil resistant pore forming material.The invention provides a kind of oil resistant pore forming material, the cetyl trimethylammonium bromide that the anion surfactant that the alkyl CAB, the weight percentage that are 50 ~ 70% by weight percentage are 5 ~ 15%, weight percentage are 10 ~ 20%, weight percentage be 10 ~ 20% water form, wherein alkyl CAB is lauroylamidopropyl betaine.
The present embodiment oil resistant type pore forming material is composed of the following components: lauroylamidopropyl betaine 70%, sodium cetanesulfonate 5%, cetyl trimethylammonium bromide 10%, water 15%, composite post-foaming ability can reach 184mm, and 15min takes liquid rate 77%, when condensate oil content 30%, taking liquid rate can reach 62%.
Oil resistant pore forming material preparation process: by weight percentage be 5% anion surfactant to add weight percentage be in proportion in the water of 15%, stir, add 5% cetyl trimethylammonium bromide until completely dissolved, be stirred to and dissolve completely, finally add the alkyl CAB that weight percentage is 70%, stir and leave standstill 30min, to dissolving completely.
Lauroylamidopropyl betaine, molecular formula CH
3(CH
2)
10cONH (CH
2)
3n
+(CH
3)
2cH
2cOO
-pore forming material host, belong to amphoterics, under acidity and alkaline condition, all there is excellent solvability and stability, present positively charged ion and anionic property respectively, normal and positively charged ion, negatively charged ion, nonionogenic tenside compatibility, foaming abundancy and stablizing, biological degradability is good, and has good viscosity adjustment effect.
Sodium cetanesulfonate, CH
3(CH
2)
10sO
3na, a kind of white or micro-yellow powder are a kind of anion surfactants of good water solubility, and in hard water, have good wetting, emulsification, dispersion, foam and soil removability, biological degradability is good.
Cetyl trimethylammonium bromide, CH
3(CH
2)
15(CH
3)
3nBr, a kind of cats product, white or Light yellow crystals body, to Powdered, be soluble in Virahol, water soluble, produce a large amount of foam during concussion, all have good compatibleness with positively charged ion, nonionic, amphoterics.There is the performances such as excellent infiltration, biological degradability and sterilization.Chemical stability is good, heat-resisting, fast light, withstand voltage, strong alkali-acid resistance.
Anion surfactant sodium cetanesulfonate solution and cats product cetyl trimethylammonium bromide solution can not react below 150 DEG C.
Embodiment 2:
The present embodiment oil resistant type pore forming material is composed of the following components: lauroylamidopropyl betaine 60%, sodium cetanesulfonate 10%, cetyl trimethylammonium bromide 15%, water 15%, composite post-foaming ability can reach 184mm, and 15min takes liquid rate 77%, when condensate oil content 30%, taking liquid rate can reach 62%.
Embodiment 3:
The present embodiment oil resistant type pore forming material is composed of the following components: lauroylamidopropyl betaine 50%, sodium cetanesulfonate 15%, cetyl trimethylammonium bromide 20%, water 15%, composite post-foaming ability can reach 184mm, and 15min takes liquid rate 77%, when condensate oil content 30%, taking liquid rate can reach 65%.
In sum, oil resistant type pore forming material of the present invention adds water-producing gas well post-foaming ability by force, and froth stability is good, and for product condensate well, fluid-carrying capability is still very strong, is applicable to moderate salinity, uses containing the water-producing gas well of condensate oil.
The anti-salinity ability 250g/L of this oil resistant pore forming material, condensate oil ability 30%, methanol tolerance ability 20%, under the condition of condensate oil content 30%, its foaming power can reach 122mm, and 15min takes liquid rate more than 62%, medicament validity period is long, and test in place oil/gas well stimulation rate is up to more than 74%.This product is nontoxic, easily degrade, can not to environment.This pore forming material can with the medicament compatibilities such as methyl alcohol, inhibiter, Scale inhibitors, there is not chemical reaction with gas, fluid component, do not increase the toxicity of gas and products of combustion, do not corrode e-quipment and pipe.
The product performance testing method that the present embodiment does not describe in detail belongs to the known of the industry or common testing methods, does not describe one by one here.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (5)
1. an oil resistant pore forming material, is characterized in that: the cetyl trimethylammonium bromide that the anion surfactant that the alkyl CAB, the weight percentage that are 50 ~ 70% by weight percentage are 5 ~ 15%, weight percentage are 10 ~ 20%, weight percentage be 10 ~ 20% water form.
2. a kind of oil resistant pore forming material according to claim 1, is characterized in that: described alkyl CAB is lauroylamidopropyl betaine.
3. a kind of oil resistant pore forming material according to claim 1, is characterized in that: described anion surfactant is sodium cetanesulfonate.
4. the preparation method of a kind of oil resistant pore forming material according to claim 1, it is characterized in that, preparation process is as follows: by weight percentage be 5 ~ 15% anion surfactant to add weight percentage be in proportion in the water of 10 ~ 20%, stir, add cetyl trimethylammonium bromide until completely dissolved, be stirred to and dissolve completely, finally add the alkyl CAB that weight percentage is 10 ~ 20%, stir and leave standstill 30min, to dissolving completely.
5. the preparation method of a kind of oil resistant pore forming material according to claim 4, it is characterized in that, described alkyl CAB weight percentage is 50%, and sodium cetanesulfonate 15% weight percentage is, cetyl trimethylammonium bromide weight percentage is 20%, and water weight percentage is 15%.
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Cited By (6)
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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 |
CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil resistant low-water-content foaming agent |
CN108251091A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of anti-salinity, condensate oil fluid foaming agent and preparation method thereof |
CN109810685A (en) * | 2017-11-20 | 2019-05-28 | 中国石油化工股份有限公司 | Oil displacement agent composition and its preparation method and application |
CN114752367A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气股份有限公司 | Composite sterilization foaming agent for shale gas foam well, preparation method and application |
CN115975620A (en) * | 2023-02-03 | 2023-04-18 | 西安石油大学 | Gas well foam scrubbing agent and preparation method and application thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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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 |
CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil resistant low-water-content foaming agent |
CN108251091A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of anti-salinity, condensate oil fluid foaming agent and preparation method thereof |
CN109810685A (en) * | 2017-11-20 | 2019-05-28 | 中国石油化工股份有限公司 | Oil displacement agent composition and its preparation method and application |
CN109810685B (en) * | 2017-11-20 | 2021-06-11 | 中国石油化工股份有限公司 | Oil displacement agent composition and preparation method and application thereof |
CN114752367A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气股份有限公司 | Composite sterilization foaming agent for shale gas foam well, preparation method and application |
CN115975620A (en) * | 2023-02-03 | 2023-04-18 | 西安石油大学 | Gas well foam scrubbing agent and preparation method and application thereof |
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