CN103087698A - Solid foamed drainage agent for natural gas well and preparation method of solid foamed drainage agent - Google Patents
Solid foamed drainage agent for natural gas well and preparation method of solid foamed drainage agent Download PDFInfo
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Abstract
The invention discloses a solid foamed drainage agent for a natural gas well and a preparation method of the solid foamed drainage agent. The solid foamed drainage agent is prepared from the following raw materials in percentage by mass: 25-30 percent of surfactant, 1-3 percent of imidazoline quaternary ammonium salt, 10-15 percent of sodium peroxide, 20-25 percent of citric acid and 30-40 percent of thiourea. The solid foamed drainage agent is novel in components, non-toxic and environment-friendly, strong in self-foaming capability and good in foaming stability and has the foaming stability to a maximum of 169mm, the liquid carrying capability to a maximum of 83 percent, the gas condensate resistance capability up to 50 percent, the methanol resistance capability up to 40 percent, the mineralization resistance capability of 200,000mg/L and the optimal effective concentration of 0.45-0.65 percent; and in addition, the solid foamed drainage agent is convenient to feed, has a corrosion inhibition effect and has the advantages of reducing the production cost and improving the working efficiency.
Description
Technical field
The invention belongs to the oilfield chemical technology field, relate to a kind of gas field solid foam water discharge agent, particularly a kind of spontaneous foaming water discharge agent of solid that integrates foaming water discharge, pipeline corrosion protection and preparation method thereof.
Background technology
Gasser is in the middle and later periods of exploitation, and because gas well self producing energy descends, local water also follows Sweet natural gas to enter pit shaft, in the shaft bottom or the immediate vicinity of wellbore build up, cause the gas production rate of gas well to descend or gas well is not had by water logging, near the stratum injury gas well.The source of local water mainly contains two aspects: the one, and free-water in bottom, the immersion of Ru Bianshui, Di Shui, middle water; The 2nd, after the Sweet natural gas that contains aqueous vapor in local water enters pit shaft, the condensation water that occurs due to the variation of temperature, pressure.Contain the corrosive gasess such as carbonic acid gas, hydrogen sulfide in local water and in Sweet natural gas, make gas well have corrosion phenomenon.So in the production process of the gasser that has aquatic products to go out, how to avoid losing significantly under the prerequisite of layer energy, take local water out of the water surface to greatest extent, be that the important problem that the water natural gas well must be considered is produced in exploitation.
The problem of producing because of the local water impact in order to solve gas well at present, the method for employing are the filling foaming water discharge agents; For solving the etching problem of gas well, be mainly the filling inhibiter, form layer protecting film on the tube wall of oil pipe, prevent the sour gas corrosion tube wall.Traditional gasser draining adopts medicament to annotate one by one exactly, and powder performance is single, and medicament is incompatible mutually, and the filling time also must must separate, the cost that causes annotating increases, filling technique becomes complicated, the validity period of medicament shortens greatly, does not reach the result of use of expection.
In existing foaming water discharge agent, Chinese patent discloses CN102634327A Raw proportioning and is mainly 95～105 parts, tensio-active agent, 3～7 parts of methylcellulose gum, 5～10 parts of foam control agents, wherein tensio-active agent is comprised of according to weight ratio 1～2:1～2:1～2 Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K; Chinese patent bulletin CN101492599A Raw proportioning is mainly triethylene tetramine 5～10%, diethylenetriamine 10～20%, oleic acid 10～30%, glacial acetic acid 2～10%, maleic anhydride 5～15%, the third acetic acid 5～10%.The cost of above-mentioned two kinds of foaming water discharge agents is higher, a little less than not environmental protection of composition, relatively poor, the anti-oil of spontaneous lathering property, methyl alcohol ability, the present invention is directed to above shortcoming, overcomes one by one.
Summary of the invention
The purpose of this invention is to provide a kind of strong from the foaming ability, froth stability good, liquid carry over is large, anti-oil, methanol tolerance, anti-salt, add gasser solid foam water discharge agent that conveniently has corrosion inhibition concurrently and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is as follows:
Gasser solid foam water discharge agent is made by the feed composition of following mass percentage content: tensio-active agent 25～30%, imidazoline quaternary ammonium salt 1～3%, sodium peroxide 10～15%, citric acid 20～25%, thiocarbamide 30～40%; In described tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent and is: AESA10～15%, lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine totally 5～10%, AEO-35～10%.
The present invention further improves and is: the mass ratio of lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine is 1:1.
The present invention further improves and is: the mass concentration that adds when described gasser solid foam water discharge agent uses is 4.5～6.5 ‰.
The present invention further improves and is: the feed composition by following mass percentage content is made: tensio-active agent 25%, imidazoline quaternary ammonium salt 3%, sodium peroxide 15%, citric acid 20%, thiocarbamide 37%; In described tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent and is: AESA15%, lauryl dimethyl amine oxide 2.5%, cardamom dimethyl oxidation amine 2.5%, AEO-35%.
Above-mentioned various feed composition effect:
Tetrahydroglyoxaline has been the material composition of corrosion inhibition; Tensio-active agent is to be formed by four kinds of surfactant compounds, wherein AESA has higher foaming power and excellent compatibility, lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine compound use have superior conditioning performance and foam stability energy, and AEO-3 has anti-oil and the methanol tolerance ability of good excellence; Sodium peroxide and citric acid play the effect from foaming; Thiocarbamide is mainly as the solidifying agent of solid foam water discharge agent.
The preparation method of gasser solid foam water discharge agent comprises the steps:
A, tensio-active agent composite:
In the there-necked flask that agitator, return line, thermometer are housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 80 ℃-100 ℃, add AESA and AEO-3, stirring is warming up to 120 ℃, then constant temperature back flow reaction 1-1.5h distills out wherein moisture, and four kinds of surfactant compounds are completed;
The preparation of B, solid foam water discharge agent:
Get the composite good tensio-active agent of steps A, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid and thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, namely get gasser solid foam water discharge agent finished product.
The present invention further improves and is: described gasser solid foam water discharge agent finished product is the circular solids column.
With respect to prior art, beneficial effect of the present invention is: solid foam water discharge agent of the present invention, composition is novel, asepsis environment-protecting, strong from the foaming ability, froth stability good, froth stability can reach 169mm, fluid-carrying capability is up to 83%, the condensate oil ability can reach 50%, the methanol tolerance ability can reach 40%, anti-salinity ability 200000mg/L, and optimum effective concentration is 4.5～6.5%.And add and conveniently have corrosion inhibition concurrently, reduced production cost, improved working efficiency.Be applicable to any gas well foaming water discharge, have good compatibleness with other down-hole with agent, with gas, fluid component, chemical reaction does not occur, the test in place bubble is lined up power and is reached more than 90%.
Description of drawings
Fig. 1 is that the cross section of finished product circular solids column of the present invention cuts open schematic diagram.
Embodiment
Embodiment 1
Solid foam water discharge agent of the present invention is to be made by the raw material of following quality proportioning: tensio-active agent 30%, imidazoline quaternary ammonium salt 2%, sodium peroxide 10%, citric acid 20%, thiocarbamide 38%.
In tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent: the AESA(AESA) 10%, lauryl dimethyl amine oxide 5%, cardamom dimethyl oxidation amine 5%, AEO-3(fatty alcohol-polyoxyethylene ether) 10%.
The concrete preparation method of solid foam water discharge agent of the present invention comprises the steps:
A, tensio-active agent composite
According to aforementioned proportion, in the 500ml there-necked flask of agitator, return line, thermometer is housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 80 ℃, add AESA and AEO-3, stir and be warming up to 120 ℃, constant temperature back flow reaction 1.5h, then distill out wherein moisture, four kinds of surfactant compounds are completed.
The preparation of B, solid foam water discharge agent
According to aforementioned proportion, get above-mentioned composite good tensio-active agent, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid, thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, get product.
Embodiment 2
Solid foam water discharge agent of the present invention is to be made by the raw material of following quality proportioning: tensio-active agent 28%, imidazoline quaternary ammonium salt 3%, sodium peroxide 12%, citric acid 25%, thiocarbamide 32%.
In tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent: AESA10%, lauryl dimethyl amine oxide 5%, cardamom dimethyl oxidation amine 5%, AEO-38%.
The concrete preparation method of solid foam water discharge agent of the present invention comprises the steps:
A, tensio-active agent composite
According to aforementioned proportion, in the 500ml there-necked flask of agitator, return line, thermometer is housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 100 ℃, add AESA and AEO-3, stir and be warming up to 120 ℃, constant temperature back flow reaction 1h, then distill out wherein moisture, four kinds of surfactant compounds are completed.
The preparation of B, solid foam discharging agent
According to aforementioned proportion, get above-mentioned composite good tensio-active agent, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid, thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, get product.
Embodiment 3
Solid foam water discharge agent of the present invention is to be made by the raw material of following quality proportioning: tensio-active agent 28%, imidazoline quaternary ammonium salt 1%, sodium peroxide 10%, citric acid 21%, thiocarbamide 40%.
In tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent: AESA15%, lauryl dimethyl amine oxide 2.5%, cardamom dimethyl oxidation amine 2.5%, AEO-38%.
The concrete preparation method of solid foam water discharge agent of the present invention comprises the steps:
A, tensio-active agent composite
According to aforementioned proportion, in the 500ml there-necked flask of agitator, return line, thermometer is housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 90 ℃, add AESA and AEO-3, stir and be warming up to 120 ℃, constant temperature back flow reaction 1h, then distill out wherein moisture, until system becomes very sticky liquid, four kinds of surfactant compounds are completed.
The preparation of B, solid foam discharging agent
According to aforementioned proportion, get above-mentioned composite good tensio-active agent, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid, thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, get product.
Embodiment 4
Solid foam water discharge agent of the present invention is to be made by the raw material of following quality proportioning: tensio-active agent 30%, imidazoline quaternary ammonium salt 2%, sodium peroxide 15%, citric acid 20%, thiocarbamide 33%.
In tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent: AESA10%, lauryl dimethyl amine oxide 5%, cardamom dimethyl oxidation amine 5%, AEO-310%.
The concrete preparation method of solid foam water discharge agent of the present invention comprises the steps:
A, tensio-active agent composite
According to aforementioned proportion, in the 500ml there-necked flask of agitator, return line, thermometer is housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 80 ℃, add a certain amount of AESA and AEO-3, stir and be warming up to 120 ℃, constant temperature back flow reaction 1.5h, then distill out wherein moisture, four kinds of surfactant compounds are completed.
The preparation of B, solid corrosion inhibitor
According to aforementioned proportion, get above-mentioned composite good tensio-active agent, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid, thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, get product.
Embodiment 5
Solid foam water discharge agent of the present invention is to be made by the raw material of following quality proportioning: tensio-active agent 25%, imidazoline quaternary ammonium salt 3%, sodium peroxide 15%, citric acid 20%, thiocarbamide 37%.
In tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent: AESA15%, lauryl dimethyl amine oxide 2.5%, cardamom dimethyl oxidation amine 2.5%, AEO-35%.
The concrete preparation method of solid foam water discharge agent of the present invention comprises the steps:
A, tensio-active agent composite
According to aforementioned proportion, in the 500ml there-necked flask of agitator, return line, thermometer is housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 100 ℃, add a certain amount of AESA and AEO-3, stir and be warming up to 120 ℃, constant temperature back flow reaction 1.5h, then distill out wherein moisture, four kinds of surfactant compounds are completed.
The preparation of B, solid corrosion inhibitor
According to aforementioned proportion, get above-mentioned composite good tensio-active agent, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid, the thiocarbamide of certain mass ratio, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, get product.
Properties to the prepared solid foam water discharge agent of above embodiment is measured, and concrete data are referring to table 1:
The properties of the solid foam water discharge agent of table 1 different concns
As can be seen from Table 1, be in the mineralized water of 200000mg/L in total mineralization, the prepared solid foam water discharge agent of the present invention has good stability, froth stability can reach 169mm, fluid-carrying capability is up to 83%, the condensate oil ability can reach 50%, and the methanol tolerance ability can reach 40%, and best effective concentration is 4.5～6.5 ‰.
Claims (6)
1. gasser solid foam water discharge agent, is characterized in that, made by the feed composition of following mass percentage content: tensio-active agent 25～30%, imidazoline quaternary ammonium salt 1～3%, sodium peroxide 10～15%, citric acid 20～25%, thiocarbamide 30～40%;
In described tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent and is: AESA10～15%, lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine totally 5～10%, AEO-35～10%.
2. gasser solid foam water discharge agent according to claim 1, it is characterized in that: the mass ratio of lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine is 1:1.
3. gasser solid foam water discharge agent according to claim 1 is characterized in that: the concentration that adds when described gasser solid foam water discharge agent uses is 4.5～6.5 ‰.
4. gasser solid foam water discharge agent according to claim 1, it is characterized in that: the feed composition by following mass percentage content is made: tensio-active agent 25%, imidazoline quaternary ammonium salt 3%, sodium peroxide 15%, citric acid 20%, thiocarbamide 37%;
In described tensio-active agent, each raw material accounts for the mass percent of solid foam water discharge agent and is: AESA15%, lauryl dimethyl amine oxide 2.5%, cardamom dimethyl oxidation amine 2.5%, AEO-35%.
5. the preparation method of the described gasser solid foam of any one water discharge agent in claim 1 to 4, is characterized in that, comprises the steps:
A, tensio-active agent composite:
In the there-necked flask that agitator, return line, thermometer are housed, the aqueous solution that adds lauryl dimethyl amine oxide and cardamom dimethyl oxidation amine, when being warming up to 80 ℃-100 ℃, add AESA and AEO-3, stirring is warming up to 120 ℃, then constant temperature back flow reaction 1-1.5h distills out wherein moisture, and four kinds of surfactant compounds are completed;
The preparation of B, solid foam water discharge agent:
Get the composite good tensio-active agent of steps A, add imidazoline quaternary ammonium salt, sodium peroxide, citric acid and thiocarbamide, after mechanical stirring is even, pour normal temperature extrusion molding in mould into, namely get gasser solid foam water discharge agent finished product.
6. preparation method according to claim 5, it is characterized in that: described gasser solid foam water discharge agent finished product is the circular solids column.
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| CN104342097A (en) * | 2013-08-09 | 2015-02-11 | 中国石油天然气股份有限公司 | Solid foam drainage agent for gas field |
| CN105062453A (en) * | 2015-08-05 | 2015-11-18 | 扬州大学 | Solid foam water draining agent for gas field and preparation method thereof |
| CN106433597A (en) * | 2016-09-14 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Foaming drainage agent, preparation method and application |
| CN106497533A (en) * | 2016-08-30 | 2017-03-15 | 西咸新区海创化工科技有限公司 | A kind of damp-proof foam drainage rod and preparation method thereof |
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| CN107384355A (en) * | 2017-09-08 | 2017-11-24 | 广东石油化工学院 | Containing CO2Oil/gas Well foam corrosion inhibiter |
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| CN109681167A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Using the method for the foaming water discharge agent composition liquid discharging gas producing of solid oil resistant |
| CN109681173A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | With the method for foaming water discharge agent composition liquid discharging gas producing |
| CN109681171A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | Using the method for solid foam water discharge agent composition liquid discharging gas producing |
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| CN109679616B (en) * | 2017-10-18 | 2021-08-03 | 中国石油化工股份有限公司 | Foam drainage agent with pH value response, preparation method and application |
| CN111154468A (en) * | 2020-01-06 | 2020-05-15 | 西南石油大学 | Selective water shutoff agent for oilfield water shutoff |
| CN111764878A (en) * | 2020-07-07 | 2020-10-13 | 成都立联科能源科技有限公司 | Nano-foam lifting liquid drainage gas production rod and preparation method and application thereof |
| CN114437697A (en) * | 2022-01-26 | 2022-05-06 | 陕西日新石油化工有限公司 | Solid foam drainage agent with corrosion inhibition function and preparation method thereof |
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| CN103087698B (en) | 2014-12-10 |
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