CN111205845B - Cleanup additive for fracturing and preparation method thereof - Google Patents
Cleanup additive for fracturing and preparation method thereof Download PDFInfo
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- CN111205845B CN111205845B CN202010019041.0A CN202010019041A CN111205845B CN 111205845 B CN111205845 B CN 111205845B CN 202010019041 A CN202010019041 A CN 202010019041A CN 111205845 B CN111205845 B CN 111205845B
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- fracturing
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- ammonium bromide
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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
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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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
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a cleanup additive for fracturing and a preparation method thereof, and belongs to the technical field of oilfield development. The invention discloses a cleanup additive for fracturing, which consists of 1-3 dimethyl propane diamine, hexadecyl trimethyl ammonium bromide, epichlorohydrin and a cationic fluorocarbon surfactant. The cleanup additive for fracturing prepared by the invention has low surface tension, has an inhibiting effect on clay swelling, solves the problem of compatibility of polymer slickwater, and achieves the purpose of effectively improving the permeability of an oil layer containing a small amount of water.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a cleanup additive for fracturing and a preparation method thereof.
Background
The oil field fracturing operation is a main process for increasing the yield of a new oil field and an old oil field, wherein the fracturing fluid is an aqueous fluid for fracturing a stratum; because the oil reservoir usually contains a large amount of clay, the injection of external water can cause the hydration expansion of the clay minerals in the oil reservoir and the dispersion and migration of the clay minerals, so that rock pores and roar channels are blocked, the permeability of the reservoir is reduced, the fracturing effect is reduced, and the good oil increasing effect cannot be achieved. The fracturing fluid is an aqueous fluid, the flowback of the fluid needs to be added with a cleanup additive to reduce the surface tension of the flowback fluid, and the flowback fluid contains an anti-swelling agent for preventing clay from swelling so as to control the swelling of the clay by the fracturing fluid.
Therefore, the problem to be solved by the technical personnel in the field is to provide a cleanup additive for fracturing and a preparation method thereof.
Disclosure of Invention
In view of the above, the invention provides a cleanup additive for fracturing and a preparation method thereof, and the cleanup additive can reduce the surface tension of liquid, has an inhibiting effect on the swelling of clay, and simultaneously meets the performance requirements of polymer fracturing fluids.
In order to achieve the purpose, the invention adopts the following technical scheme:
a discharge aiding agent for fracturing consists of the following raw materials: 30-60g of 1-3 dimethyl propane diamine, 0.1-0.35g of hexadecyl trimethyl ammonium bromide, 20-36g of epichlorohydrin and 0.1-1.5g of cationic fluorocarbon surfactant.
Further, the preparation method of the cleanup additive for fracturing comprises the following specific steps:
(1) weighing 30-60ml of 30% HCl solution by using a measuring cylinder, adding the HCl solution into a container, and starting a stirrer;
(2) 30-60g of 1-3-dimethylpropylenediamine is dripped into a container;
(3) controlling the temperature of the reaction liquid to be-7 ℃ until the pH value of the liquid is 8.0;
(4) adding 0.1-0.35g of hexadecyl trimethyl ammonium bromide;
(5) then dripping 20-36g of epoxy chloropropane;
(6) adding 0.1-1.5g of cationic fluorocarbon surfactant, controlling the temperature of the reaction solution to be 40-55 ℃, and continuously stirring and reacting for 2-4h after the dropwise adding is finished to obtain the discharge assistant for fracturing.
According to the technical scheme, compared with the prior art, the drainage aid for fracturing and the preparation method thereof are disclosed and provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A cleanup additive for fracturing consists of the following raw materials: 60g of 1-3 dimethyl propane diamine, 0.35g of hexadecyl trimethyl ammonium bromide, 36g of epoxy chloropropane and 1.5g of cationic fluorocarbon surfactant.
The preparation method of the cleanup additive for fracturing comprises the following specific steps:
(1) weighing 60ml of HCl solution with the concentration of 30% by using a measuring cylinder, adding the HCl solution into a container, and starting a stirrer;
(2) dripping 1-3 dimethyl propane diamine into the container;
(3) controlling the temperature of the reaction liquid to be-7 ℃ until the pH value of the liquid is 8.0;
(4) adding hexadecyl trimethyl ammonium bromide;
(5) then dripping epoxy chloropropane;
(6) adding a cationic fluorocarbon surfactant, controlling the temperature of the reaction solution to be 40 ℃, and continuously stirring and reacting for 4 hours after the dropwise adding is finished to obtain the discharge assistant for fracturing.
Example 2
A discharge aiding agent for fracturing consists of the following raw materials: 30g of 1-3 dimethyl propane diamine, 0.1g of hexadecyl trimethyl ammonium bromide, 36g of epoxy chloropropane and 1.5g of cationic fluorocarbon surfactant.
The preparation method of the cleanup additive for fracturing comprises the following specific steps:
(1) weighing 30ml of HCl solution with the concentration of 30% by using a measuring cylinder, adding the HCl solution into a container, and starting a stirrer;
(2) dripping 1-3 dimethyl propane diamine into the container;
(3) controlling the temperature of the reaction liquid to be-7 ℃ until the pH value of the liquid is 8.0;
(4) adding hexadecyl trimethyl ammonium bromide;
(5) then dripping epichlorohydrin;
(6) adding a cationic fluorocarbon surfactant, controlling the temperature of the reaction liquid to be 50 ℃, and continuously stirring and reacting for 3 hours after the dropwise adding is finished to obtain the discharge assistant for fracturing.
Example 3
A discharge aiding agent for fracturing consists of the following raw materials: 50g of 1-3 dimethyl propane diamine, 0.2g of hexadecyl trimethyl ammonium bromide, 30g of epoxy chloropropane and 0.1g of cationic fluorocarbon surfactant.
The preparation method of the cleanup additive for fracturing comprises the following specific steps:
(1) weighing 50ml of 30% HCl solution by using a measuring cylinder, adding the HCl solution into a container, and starting a stirrer;
(2) dropwise adding 1-3-dimethylpropanediamine into a container;
(3) controlling the temperature of the reaction liquid to be-7 ℃ until the pH value of the liquid is 8.0;
(4) adding hexadecyl trimethyl ammonium bromide;
(5) then dripping epichlorohydrin;
(6) and adding a cationic fluorocarbon surfactant, controlling the temperature of the reaction solution to be 55 ℃, and continuously stirring and reacting for 2 hours after the dropwise adding is finished to obtain the discharge assistant for fracturing.
The cleanup additive for fracturing and the cleanup additive in the current market (20% polyethylene polyamine, 75% polyoxyethylene ether and 5% cationic fluorine activator) prepared in examples 1-3 were tested by a SY-T5755-1995 cleanup additive performance evaluation method, and the results are as follows:
when the concentration of the prior market cleanup additive is 0.3%, the surface tension is 28mN/m, and the interfacial tension is 0.6 mN/m; when the concentration of the cleanup additive for fracturing prepared in the embodiment 1 of the invention is 0.3%, the surface tension is 23mN/m, and the interfacial tension is 0.24 mN/m; when the concentration of the cleanup additive for fracturing prepared in the embodiment 2 of the invention is 0.3%, the surface tension is 24mN/m, and the interfacial tension is 0.23 mN/m; the cleanup additive for fracturing prepared in example 3 of the present invention has a surface tension of 22mN/m and an interfacial tension of 0.2mN/m at a concentration of 0.3%.
The anti-swelling rate centrifugal determination method comprises the following steps: weighing 0.5g of bentonite, putting the bentonite into a centrifuge tube, adding 10mL of anti-swelling agent solutions with different concentrations, fully shaking the solution, putting the solution for 4 hours, putting the solution into a centrifuge, and carrying out centrifugal separation for 15min at the rotating speed of 1500r/min, wherein the result shows that: when the concentration of the conventional anti-swelling agent (25% of dimethylamine, 70% of epichlorohydrin and 5% of potassium chloride) is 0.5%, the anti-swelling rate is 78%; when the concentration of the cleanup additive for fracturing prepared in the embodiment 1 of the invention is 0.5%, the anti-swelling rate can reach 86%, and the applicability of the anti-swelling agent is strong; when the concentration of the cleanup additive for fracturing prepared in the embodiment 2 of the invention is 0.5%, the anti-swelling rate is 88%; when the concentration of the cleanup additive for fracturing prepared in embodiment 3 of the invention is 0.5%, the anti-swelling rate is 89%.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The cleanup additive for fracturing is characterized by comprising the following raw materials: 30-60g of 1-3 dimethyl propane diamine, 0.1-0.35g of hexadecyl trimethyl ammonium bromide, 20-36g of epichlorohydrin and 0.1-1.5g of cationic fluorocarbon surfactant.
2. The preparation method of the cleanup additive for fracturing as recited in claim 1, comprising the following steps:
(1) weighing 30-60ml of 30% HCl solution by using a measuring cylinder, adding the HCl solution into a container, and starting a stirrer;
(2) dripping 30-60g of 1-3 dimethyl propane diamine into a container;
(3) controlling the temperature of the reaction liquid to be-7 ℃ until the pH value of the liquid is 8.0;
(4) adding 0.1-0.35g of hexadecyl trimethyl ammonium bromide;
(5) then dripping 20-36g of epoxy chloropropane;
(6) adding 0.1-1.5g of cationic fluorocarbon surfactant, controlling the temperature of the reaction solution to be 40-55 ℃, and continuously stirring and reacting for 2-4h after the dropwise adding is finished to obtain the discharge assistant for fracturing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010019041.0A CN111205845B (en) | 2020-01-08 | 2020-01-08 | Cleanup additive for fracturing and preparation method thereof |
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| CN111205845A CN111205845A (en) | 2020-05-29 |
| CN111205845B true CN111205845B (en) | 2022-06-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504790A (en) * | 2011-11-09 | 2012-06-20 | 蒋官澄 | Method for reversing gas humidity on surface of rock core by using cationic fluorocarbon surfactant |
| CN104212429A (en) * | 2014-08-11 | 2014-12-17 | 东北石油大学 | Anti-swelling and swelling shrinkage agent and preparation method thereof |
| CN105754576A (en) * | 2015-12-28 | 2016-07-13 | 重庆地质矿产研究院 | Anti-swelling agent for shale gas slickwater fracturing fluid and preparation method thereof |
| CN108047078A (en) * | 2018-01-11 | 2018-05-18 | 西南石油大学 | Three sub- cationic viscoelastic surfactants and preparation method thereof, application and clean fracturing fluid |
| CN109749729A (en) * | 2017-11-06 | 2019-05-14 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of blistering cleanup additive and preparation method thereof |
| CN109821473A (en) * | 2019-03-29 | 2019-05-31 | 山东天成化工有限公司 | Multi-functional, the high activity cation Gemini surfactant of one kind and production method |
-
2020
- 2020-01-08 CN CN202010019041.0A patent/CN111205845B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504790A (en) * | 2011-11-09 | 2012-06-20 | 蒋官澄 | Method for reversing gas humidity on surface of rock core by using cationic fluorocarbon surfactant |
| CN104212429A (en) * | 2014-08-11 | 2014-12-17 | 东北石油大学 | Anti-swelling and swelling shrinkage agent and preparation method thereof |
| CN105754576A (en) * | 2015-12-28 | 2016-07-13 | 重庆地质矿产研究院 | Anti-swelling agent for shale gas slickwater fracturing fluid and preparation method thereof |
| CN109749729A (en) * | 2017-11-06 | 2019-05-14 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | A kind of blistering cleanup additive and preparation method thereof |
| CN108047078A (en) * | 2018-01-11 | 2018-05-18 | 西南石油大学 | Three sub- cationic viscoelastic surfactants and preparation method thereof, application and clean fracturing fluid |
| CN109821473A (en) * | 2019-03-29 | 2019-05-31 | 山东天成化工有限公司 | Multi-functional, the high activity cation Gemini surfactant of one kind and production method |
Non-Patent Citations (2)
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| PNN破乳剂的合成及其乳化液废水处理;卞华松等;《环境污染与防治》;20000220;第22卷(第01期);15-17 * |
| 含油污水破乳剂的合成及应用;孙华等;《华东理工大学学报》;19901030;第16卷(第05期);545-550 * |
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