CN109337662B - Antifreezing foaming agent and preparation method thereof - Google Patents
Antifreezing foaming agent and preparation method thereof Download PDFInfo
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- CN109337662B CN109337662B CN201811298256.XA CN201811298256A CN109337662B CN 109337662 B CN109337662 B CN 109337662B CN 201811298256 A CN201811298256 A CN 201811298256A CN 109337662 B CN109337662 B CN 109337662B
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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 discloses an antifreezing foaming agent and a preparation method thereof, and the antifreezing foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 2-4% of glycerol, 2-4% of DMF, 1.5-2.0% of triethanolamine, 0.08-0.12% of sodium carboxymethylcellulose, 0.1-0.2% of c-NMF linear tetramer, 0.1-0.2% of metal organic framework material MOF-5, 24-27% of PEO-PPO-PEO triblock copolymer and 5-7% of polyoxyethylene castor oil, and the balance of deionized water, so that the freezing possibility of the foaming agent in the using process is reduced.
Description
Technical Field
The invention relates to an antifreezing foaming agent and a preparation method thereof.
Background
When a gas well is normally produced, liquid is carried to the ground in the form of liquid drops by gas, the gas is in a continuous phase, and the liquid is in a discontinuous phase, and when the flow rate of a gas phase is too low to provide enough energy to enable the liquid in a shaft to continuously flow out of a wellhead, the liquid flows in the opposite direction of the gas flow and is accumulated at the bottom of the well, and liquid accumulation exists in the gas well and is gradually accumulated. The foam water draining and gas producing process is one auxiliary gas producing technology developed for water producing gas field and has the main principle that foaming agent (surfactant) is injected into the bottom of well and through stirring of natural gas flow, the foaming agent is made to contact with the accumulated liquid in the bottom of well to produce great amount of stable water-containing foam in low density, and the accumulated liquid in the bottom of well is carried to ground by the foam to reach the aim of water draining and gas producing.
However, when the freezing point of water is 0 ℃, when the aqueous solution of the surfactant is injected into a gas well, the aqueous solution freezes due to low ground temperature, so that normal foaming cannot be realized.
Disclosure of Invention
The first purpose of the invention is to provide an antifreezing foaming agent, which reduces the possibility of icing of the foaming agent during use.
The technical purpose of the invention is realized by the following technical scheme: an antifreezing foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 2-4% of glycerol, 2-4% of DMF, 1.5-2.0% of triethanolamine, 0.08-0.12% of sodium carboxymethyl cellulose, 0.1-0.2% of c-NMF linear tetramer, 0.1-0.2% of metal organic framework material MOF-5, 24-27% of PEO-PPO-PEO triblock copolymer, 5-7% of polyoxyethylene castor oil and the balance of deionized water.
More preferably: the composite material comprises the following components in percentage by mass: 33% of ethylene glycol, 3% of glycerol, 3% of DMF, 1.8% of triethanolamine, 0.10% of sodium carboxymethylcellulose, 0.16% of linear tetramer of c-NMF, 0.16% of metal organic framework material MOF-5, 25% of PEO-PPO-PEO triblock copolymer and 6% of polyoxyethylene castor oil, and the balance of deionized water.
The second purpose of the invention is to provide a preparation method of the antifreezing foaming agent.
The technical purpose of the invention is realized by the following technical scheme:
the preparation method of the anti-freezing foaming agent comprises the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer, polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, uniformly stirring and dispersing to obtain a solution, and filtering to obtain a filtrate; raising the temperature of the filtrate from room temperature to 85-95 ℃ at a temperature raising rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, then lowering the temperature to-65-55 ℃ at a temperature lowering rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, raising the temperature to room temperature at a temperature raising rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, and filtering again to obtain the filtrate, namely the anti-freezing foaming agent.
More preferably: the method comprises the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer, polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, uniformly stirring and dispersing to obtain a solution, and filtering to obtain a filtrate; heating the filtrate at 50 deg.C/hr to 90 deg.C and maintaining for 1.5hr, cooling to-60 deg.C at 50 deg.C/hr and maintaining for 1.5hr, heating to room temperature at 50 deg.C/hr and maintaining for 1.5hr, and filtering to obtain filtrate as the antifreezing foaming agent;
the antifreezing foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 3% of glycerol, 3% of DMF, 1.8% of triethanolamine, 0.10% of sodium carboxymethylcellulose, 0.16% of linear tetramer of c-NMF, 0.16% of metal organic framework material MOF-5, 25% of PEO-PPO-PEO triblock copolymer and 6% of polyoxyethylene castor oil, and the balance of deionized water.
In conclusion, the invention has the following beneficial effects: the freezing point of water is reduced to-42 to-45 ℃, the freezing possibility of the foaming agent in the using process is reduced, and the foaming agent is suitable for wider environment temperature and has wider applicability; the foaming capacity and the liquid carrying capacity are both obviously superior to the prior art, especially under the condition of low temperature.
Detailed Description
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.
Unless otherwise noted, the room temperature in the present application refers to the ambient temperature, and is 20-30 ℃.
Example 1: an antifreeze foaming agent prepared by the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer (F127 type), polyoxyethylene castor oil and deionized water, adding a linear tetramer of sodium carboxymethylcellulose and c-NMF (namely cis-N-methylformamide) and a metal organic framework material MOF-5, uniformly stirring and dispersing to obtain a solution, and filtering to obtain a filtrate; raising the temperature of the filtrate from room temperature to 90 ℃ at the heating rate of 50 ℃/hr, preserving the heat for 1.5hr, then lowering the temperature to-60 ℃ at the cooling rate of 50 ℃/hr, preserving the heat for 1.5hr, then raising the temperature to room temperature at the heating rate of 50 ℃/hr, preserving the heat for 1.5hr, and filtering again to obtain the filtrate, namely the anti-freezing foaming agent.
The antifreezing foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 3% of glycerol, 3% of DMF, 1.8% of triethanolamine, 0.10% of sodium carboxymethylcellulose, 0.16% of linear tetramer of c-NMF, 0.16% of metal organic framework material MOF-5, 25% of PEO-PPO-PEO triblock copolymer (type F127) and 6% of polyoxyethylene castor oil, and the balance being deionized water.
Example 2: an antifreeze foaming agent which is different from the antifreeze foaming agent in the embodiment 1 in that the antifreeze foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 2% of glycerol, 2% of DMF, 1.5% of triethanolamine, 0.08% of sodium carboxymethylcellulose, 0.1% of linear tetramer of c-NMF, 0.1% of metal organic framework material MOF-5, 24% of PEO-PPO-PEO triblock copolymer (type F127) and 5% of polyoxyethylene castor oil, and the balance being deionized water.
Example 3: an antifreeze foaming agent which is different from the antifreeze foaming agent in the embodiment 1 in that the antifreeze foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 4% of glycerol, 4% of DMF, 2.0% of triethanolamine, 0.12% of sodium carboxymethylcellulose, 0.2% of linear tetramer of c-NMF, 0.2% of metal organic framework material MOF-5, 27% of PEO-PPO-PEO triblock copolymer (type F127) and 7% of polyoxyethylene castor oil, and the balance being deionized water.
Example 4: an antifreeze foaming agent which is different from that of example 1 in that it is prepared by the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer (F127 type), polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, stirring and uniformly dispersing to obtain a solution, and filtering to obtain a filtrate; raising the temperature of the filtrate from room temperature to 85 ℃ at the heating rate of 45 ℃/hr, preserving the heat for 2hr, lowering the temperature to-55 ℃ at the cooling rate of 45 ℃/hr, preserving the heat for 2hr, raising the temperature to room temperature at the heating rate of 45 ℃/hr, preserving the heat for 2hr, and filtering again to obtain the filtrate, namely the anti-freezing foaming agent.
Example 5: an antifreeze foaming agent which is different from that of example 1 in that it is prepared by the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer (F127 type), polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, stirring and uniformly dispersing to obtain a solution, and filtering to obtain a filtrate; raising the temperature of the filtrate from room temperature to 95 ℃ at the temperature raising rate of 55 ℃/hr, keeping the temperature for 1hr, lowering the temperature to-65 ℃ at the temperature lowering rate of 55 ℃/hr, keeping the temperature for 1hr, raising the temperature to room temperature at the temperature raising rate of 55 ℃/hr, keeping the temperature for 1hr, and filtering again to obtain the filtrate, namely the anti-freezing foaming agent.
Example 6: an antifreeze foaming agent which is different from that of example 1 in that it is prepared by the following steps: mixing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer (F127 type), polyoxyethylene castor oil, sodium carboxymethylcellulose, a linear tetramer of c-NMF, a metal organic framework material MOF-5 and deionized water according to the formula ratio, and stirring and dispersing uniformly to obtain a solution, namely the antifreezing foaming agent.
Freezing point test
1. Test samples: examples 1-6 and controls 1-2.
Control 1: the antifreeze is prepared by mixing 33 wt% of ethylene glycol and 67 wt% of deionized water.
Control 2: an antifreeze foaming agent prepared by referring to example 1 of CN 1277238A.
2. The test contents are as follows: the freezing point of the sample is tested according to the national petrochemical industry standard SH/T0090 freezing point determination method for engine cooling liquid.
3. And (3) testing results: as shown in table 1. Table 1 shows: the reference 1 only contains water and glycol, and the freezing point test finds that the freezing point of the reference 1 is-18 ℃; compared with a reference substance 1, the concrete working examples 1-6 contain glycerol, DMF, triethanolamine, sodium carboxymethylcellulose, linear tetramer of c-NMF, metal organic framework material MOF-5, PEO-PPO-PEO triblock copolymer and polyoxyethylene castor oil in specific proportions, the freezing point of the concrete working examples 1-6 is reduced from-18 ℃ to-42 ℃ to-45 ℃, the reduction is obvious, the application environment is wider, the freezing resistance is stronger, and the concrete working examples are obviously superior to the prior art (a reference substance 2).
TABLE 1 freezing Point test results
Second, testing foaming ability and liquid carrying amount
1. Test samples: examples 1-6 and control 1.
Control 2: an antifreeze foaming agent prepared by referring to example 1 of CN 1277238A.
2. The test contents are as follows:
(1) foaming ability
Reference standard: GB-T7462-1994 improved Ress-Miles method for measuring foaming power of surfactant, GB-T13173.6-1991 measuring foaming power of detergent, SY-T6465-2000 evaluation method for foaming agent for foam drainage and gas production.
The evaluation method comprises the following steps: under a certain temperature condition, pouring 200ml of test solution from the height of 90cm to the surface of 50ml of the same test solution at the bottom of the graduated cylinder, and measuring the foam height at the moment when the test solution is poured out, namely the foaming capacity of the sample.
(2) Liquid carrying amount
Reference standard: SY-T5761-1995 foaming agent for drainage and gas production CT5-2, SY-T6465-2000 foaming agent for foam drainage and gas production evaluation method.
The evaluation method comprises the following steps: and pouring the prepared 200ml solution into a foaming tube, introducing nitrogen into the foaming tube at the pressure of 0.05Mpa and the flow rate of 290ml/min, and measuring the volume V of liquid (oil and water) carried out by the foam after 15min to obtain the liquid carrying capacity of the foaming agent.
3. And (3) testing results: as shown in table 2. Table 2 shows: examples 1 to 6 had a higher foaming ability and liquid carrying amount at normal and low temperatures than comparative example 2.
TABLE 2 foaming Capacity and liquid carrying Capacity results
The above description should not be taken as limiting the invention to the specific embodiments, but rather, as will be readily apparent to those skilled in the art to which the invention pertains, numerous simplifications or substitutions may be made without departing from the spirit of the invention, which should be construed to fall within the scope of the invention as defined in the claims appended hereto.
Claims (4)
1. The antifreezing foaming agent is characterized by comprising the following components in percentage by mass: 33% of ethylene glycol, 2-4% of glycerol, 2-4% of DMF, 1.5-2.0% of triethanolamine, 0.08-0.12% of sodium carboxymethylcellulose, 0.1-0.2% of c-NMF linear tetramer, 0.1-0.2% of metal organic framework material MOF-5, 24-27% of PEO-PPO-PEO triblock copolymer and 5-7% of polyoxyethylene castor oil, and the balance of deionized water; the PEO-PPO-PEO triblock copolymer is F127 type.
2. The antifreeze foaming agent as set forth in claim 1, which comprises the following components in percentage by mass: 33% of ethylene glycol, 3% of glycerol, 3% of DMF, 1.8% of triethanolamine, 0.10% of sodium carboxymethylcellulose, 0.16% of linear tetramer of c-NMF, 0.16% of metal organic framework material MOF-5, 25% of PEO-PPO-PEO triblock copolymer and 6% of polyoxyethylene castor oil, and the balance of deionized water.
3. The method for preparing an antifreeze foaming agent as claimed in claim 1 or 2, which comprises the steps of: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer, polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, uniformly stirring and dispersing to obtain a solution, and filtering to obtain a filtrate; raising the temperature of the filtrate from room temperature to 85-95 ℃ at a heating rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, then lowering the temperature to-65 ℃ to-55 ℃ at a cooling rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, then raising the temperature to room temperature at a heating rate of 45-55 ℃/hr, preserving the heat for 1-2 hr, and filtering again to obtain the filtrate, namely the anti-freezing foaming agent.
4. The method for preparing the antifreeze foaming agent as claimed in claim 3, which comprises the following steps: mixing and uniformly dispersing ethylene glycol, glycerol, DMF (dimethyl formamide), triethanolamine, a PEO-PPO-PEO triblock copolymer, polyoxyethylene castor oil and deionized water according to the formula, adding sodium carboxymethylcellulose, a linear tetramer of c-NMF and a metal organic framework material MOF-5 according to the formula, uniformly stirring and dispersing to obtain a solution, and filtering to obtain a filtrate; heating the filtrate at 50 deg.C/hr to 90 deg.C and maintaining for 1.5hr, cooling to-60 deg.C at 50 deg.C/hr and maintaining for 1.5hr, heating to room temperature at 50 deg.C/hr and maintaining for 1.5hr, and filtering to obtain filtrate as the antifreezing foaming agent;
the antifreezing foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 3% of glycerol, 3% of DMF, 1.8% of triethanolamine, 0.10% of sodium carboxymethylcellulose, 0.16% of linear tetramer of c-NMF, 0.16% of metal organic framework material MOF-5, 25% of PEO-PPO-PEO triblock copolymer and 6% of polyoxyethylene castor oil, and the balance of deionized water.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051193A (en) * | 1989-10-21 | 1991-05-08 | 大庆石油管理局采油工艺研究所 | The whipping agent that preparing foam fracturing liquid is used |
| CN102850705A (en) * | 2012-03-16 | 2013-01-02 | 北京化工大学 | Preparation method of polypropylene imide foam |
| WO2013052359A1 (en) * | 2011-10-03 | 2013-04-11 | The Board Of Regents Of The University Of Oklahoma | Method and foam composition for recovering hydrocarbons from a subterranean reservoir |
| CN103509533A (en) * | 2012-06-29 | 2014-01-15 | 中国石油化工股份有限公司 | Shale inhibitor for well drilling and preparation method thereof |
| CN104152132A (en) * | 2014-06-06 | 2014-11-19 | 上海大学 | Modified nano silicon dioxide foam stabilizer and preparation method thereof |
| CN104370569A (en) * | 2013-11-22 | 2015-02-25 | 江深 | High and low temperature composite heat insulation foaming material |
| CN105670591A (en) * | 2016-03-03 | 2016-06-15 | 中国石油天然气股份有限公司 | Antifreezing foaming drainage agent, and preparation method and application thereof |
| 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 |
| CN105925256A (en) * | 2016-05-13 | 2016-09-07 | 马鞍山纽盟知识产权管理服务有限公司 | Foaming agent for petroleum exploitation |
| CN106047331A (en) * | 2016-06-27 | 2016-10-26 | 梅庆波 | Method for preparing clean fracturing fluid by synthesizing ampholytic surfactant through linen fibers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3010487A4 (en) * | 2013-06-17 | 2016-12-07 | Contract Pharmaceuticals Ltd | Non-aerosol foams for topical administration |
-
2018
- 2018-11-02 CN CN201811298256.XA patent/CN109337662B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051193A (en) * | 1989-10-21 | 1991-05-08 | 大庆石油管理局采油工艺研究所 | The whipping agent that preparing foam fracturing liquid is used |
| WO2013052359A1 (en) * | 2011-10-03 | 2013-04-11 | The Board Of Regents Of The University Of Oklahoma | Method and foam composition for recovering hydrocarbons from a subterranean reservoir |
| CN102850705A (en) * | 2012-03-16 | 2013-01-02 | 北京化工大学 | Preparation method of polypropylene imide foam |
| CN103509533A (en) * | 2012-06-29 | 2014-01-15 | 中国石油化工股份有限公司 | Shale inhibitor for well drilling and preparation method thereof |
| CN104370569A (en) * | 2013-11-22 | 2015-02-25 | 江深 | High and low temperature composite heat insulation foaming material |
| CN104152132A (en) * | 2014-06-06 | 2014-11-19 | 上海大学 | Modified nano silicon dioxide foam stabilizer and preparation method thereof |
| 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 |
| CN105670591A (en) * | 2016-03-03 | 2016-06-15 | 中国石油天然气股份有限公司 | Antifreezing foaming drainage agent, and preparation method and application thereof |
| CN105925256A (en) * | 2016-05-13 | 2016-09-07 | 马鞍山纽盟知识产权管理服务有限公司 | Foaming agent for petroleum exploitation |
| CN106047331A (en) * | 2016-06-27 | 2016-10-26 | 梅庆波 | Method for preparing clean fracturing fluid by synthesizing ampholytic surfactant through linen fibers |
Non-Patent Citations (1)
| Title |
|---|
| 聚氧乙烯_聚氧丙烯嵌段共聚物泡沫性质的研究;戴乐蓉;《石油化工》;19941231;第23卷(第6期);全文 * |
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