CN118048134A - Chemical paraffin remover for condensate oil well paraffin removal and preparation method thereof - Google Patents
Chemical paraffin remover for condensate oil well paraffin removal and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
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- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 4
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- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 150000008052 alkyl sulfonates Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
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- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
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- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- PNGBYKXZVCIZRN-UHFFFAOYSA-M sodium;hexadecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCCCCCS([O-])(=O)=O PNGBYKXZVCIZRN-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XMLSXPIVAXONDL-PLNGDYQASA-N Jasmone Chemical compound CC\C=C/CC1=C(C)CCC1=O XMLSXPIVAXONDL-PLNGDYQASA-N 0.000 description 1
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
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- Detergent Compositions (AREA)
Abstract
The invention relates to the petrochemical field, in particular to a chemical paraffin remover for condensate oil well paraffin removal and a preparation method thereof, which solve the problems that the conventional paraffin remover is easy to cause catalyst poisoning components and the paraffin removal effect is to be improved. The technical proposal comprises a solvent composition and sodium salt of C10-C20 alkyl sulfonate; wherein the solvent composition comprises, by volume, 1-10% of C8-C20 alkyl polyether nonionic surfactant, 1-35% of C7-C12 aromatic hydrocarbon organic solvent, 5-50% of C5-C15 solvent oil and 20-65% of water, totaling 100%; the paraffin removal method has the advantages of simplicity, short production period, easily available raw materials, low manufacturing cost, safety and innocuity of paraffin removal agent, high paraffin removal efficiency, small dosage and low cost.
Description
Technical Field
The invention relates to an oil well cleaning agent in the field of petrochemical industry and a preparation method thereof, in particular to a chemical paraffin remover for condensate oil well paraffin removal and a preparation method thereof.
Background
Waxes in condensate wells are typically mixtures, predominantly wax molecules, with gums and asphaltenes. As the well is produced, waxes gradually precipitate and settle, forming a solid stacked deposit with various impurities. Waxy deposits accumulate on the surface of well equipment and long term substantial build-up will affect well production. Conventional wax removers generally employ a component such as xylene, sodium dodecyl sulfate, polyoxyethylene nonylphenol ether, and sodium dialkyl succinate sulfonate to decompose the wax by dissolution or by the action of a surfactant. However, the paraffin removal effect and paraffin removal rate are slow, and cannot meet the requirements of actual production. Patent document CN115044358a discloses an environment-friendly paraffin remover, which is prepared from the following raw materials in parts by weight: 70-99 parts of wax remover, 1-30 parts of penetrating agent and 1-10 parts of wax inhibitor; the wax removing agent is at least one of limonene, cyclopentadiene, jasmone, gamma lactone and butyl lactone; the wax inhibitor is prepared by copolymerization of monomer vinyl acid ester, acrylic ester and maleic anhydride under the action of an initiator; the penetrating agent is polyether surfactant. The paraffin removal and prevention agent uses an environment-friendly organic solvent as the paraffin removal agent, has the characteristic of high paraffin dissolution rate, and does not contain components which are easy to cause catalyst poisoning, such as organic chlorine, carbon disulfide, carbon tetrachloride, benzene series and the like. However, in actual use, the paraffin removal effect still needs to be improved.
In the face of the specificity of wax in condensate wells, research and development personnel hope to develop a non-toxic, efficient and low-cost wax remover with simple preparation method.
Disclosure of Invention
The invention aims to solve the technical problems and provide the chemical paraffin removal agent for the condensate oil well paraffin removal, which is safe, nontoxic, high in paraffin removal efficiency, low in consumption and low in cost.
The invention also provides a preparation method of the chemical paraffin remover, which has the advantages of simple method, short production period, easily available raw materials and low manufacturing cost.
The invention relates to a chemical paraffin remover for condensate oil well paraffin removal, which comprises a solvent composition and C10-C20 alkyl sulfonate sodium salt;
Wherein the solvent composition comprises, by volume, 1-10% of C8-C20 alkyl polyether nonionic surfactant, 1-35% of C7-C12 aromatic hydrocarbon organic solvent, 5-50% of C5-C15 solvent oil and 20-65% of water, totaling 100%;
the mass volume concentration of the sodium salt of the C10-C20 alkyl sulfonate in the chemical paraffin remover is 10-80 g/L.
The components are thoroughly mixed to form a water-in-oil emulsion.
The volume ratio of the C8-C20 alkyl polyether nonionic surfactant to the C7-C12 aromatic hydrocarbon organic solvent to the C5-C15 solvent oil is1 (3-5) (6-10), and the dosage ratio of the C10-C20 alkyl sodium sulfonate to the C8-C20 alkyl polyether nonionic surfactant is 1g (0.9-1.2) mL.
The C10-C20 sodium alkyl sulfonate is at least one of straight-chain sodium alkyl sulfonate, branched-chain sodium alkyl sulfonate or sodium cycloalkyl sulfonate.
The C8-C20 alkyl polyether nonionic surfactant is at least one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether or alkylphenol polyoxyethylene ether.
The C7-C12 aromatic hydrocarbon organic solvent is selected from toluene, xylene, ethylbenzene, trimethylbenzene, n-propylbenzene, isopropylbenzene and the like.
C5-C15 solvent oil is purchased from Qilu petrochemical industry, exxon Mobil and the like.
The carbon number selection method in the alkyl sodium sulfonate, the alkyl polyether nonionic surfactant and the aromatic hydrocarbon organic solvent comprises the following steps: pre-taking a condensate oil sample, and measuring the volume parts of the average carbon number, the highest carbon number and the water content of organic molecules in the condensate oil sample; determining alkyl carbon number according to two-thirds to four-fifths of the average carbon number of the condensate oil organic molecules, and selecting alkyl sodium sulfonate with corresponding carbon number and alkyl polyether nonionic surfactant; determining the carbon number of the aromatic hydrocarbon according to one fifth to one third of the highest carbon number of the condensate oil and selecting an aromatic hydrocarbon organic solvent with the corresponding carbon number; the water adding amount of the chemical paraffin remover is determined according to 1-5 times of the volume fraction of the water content of the condensate.
The preparation method of the chemical paraffin removal agent for condensate well paraffin removal comprises the steps of fully mixing C10-C20 alkyl sodium sulfonate and C8-C20 alkyl polyether nonionic surfactant to obtain a first mixed solution; then adding the C7-C12 aromatic hydrocarbon organic solvent and the C5-C15 solvent oil into the first mixed solution and fully mixing to obtain a second mixed solution; and finally, adding water into the second mixed solution, and fully mixing to form emulsion.
Controlling the mixing and stirring speed of the first mixed solution and the second mixed solution in the preparation process to be 60-300 rmp/min.
After adding water to the second mixed solution, the second mixed solution is blended by ultrasonic waves to form emulsion.
The ultrasonic condition is that the ultrasonic power is 120W and the ultrasonic time is 30min.
In view of the problems existing in the background art, the inventors made the following improvements:
The inventors have found through many years of research that in pour point depressants for waxy crude oils, interactions of similar moieties in the pour point depressant molecules with the wax molecules can cause the wax molecules to fold or bend, impeding the nucleation, growth and aggregation processes of wax crystals, and causing eutectic effects. Eutectic interactions reflect interactions of the polymer with the wax molecules at the microscopic level, as well as the miscibility of the polymer with the wax molecules. Therefore, the eutectic theory is introduced into the preparation of the paraffin remover, and the aim of removing the wax is achieved through the eutectic action and the dissolution of the sodium alkyl sulfonate, the alkyl polyether substance and the wax molecules in the condensate oil. Here, the strict control of the carbon number of the sodium salt of alkyl sulfonate in the range of C10-C20 and the carbon number of the alkyl polyether nonionic surfactant in the range of C8-C20 is to consider the carbon number distribution in crude oil, so that the better effect of the paraffin removal agent and the wax molecules can be achieved, a better paraffin removal effect is exhibited, and exceeding the above range results in insufficient effect of the paraffin removal agent and the wax molecules and poor paraffin removal effect. Furthermore, the environment of substances in the oil well is complex, and the components of condensate oil are different from different oil wells or different exploitation sections of the same oil well. In the carbon number range, when aiming at different condensate oil, the condensate oil sample can be analyzed in advance, and according to the obtained data of the average carbon number, the highest carbon number and the water content volume fraction of the organic molecules, the optimal carbon number in the sodium alkyl sulfonate, the alkyl polyether nonionic surfactant and the aromatic hydrocarbon organic solvent is selected to obtain the optimal paraffin removal performance.
Preferably, the volume ratio of the C8-C20 alkyl polyether nonionic surfactant, the C7-C12 aromatic hydrocarbon organic solvent and the C5-C15 solvent oil is 1: (3-5): (6-10). Compared with the C7-C12 aromatic hydrocarbon organic solvent, the excessive addition of the C8-C20 alkyl polyether nonionic surfactant can cause difficult dehydration of crude oil in the later stage, and the excessive addition of the C8-C20 alkyl polyether nonionic surfactant can cause layering of oil water. The dosage ratio of the C10-C20 alkyl sulfonate sodium salt to the C8-C20 alkyl polyether nonionic surfactant is 1g: (0.9-1.2) mL. Compared with the C8-C20 alkyl polyether nonionic surfactant, the addition of the sodium salt of the C10-C20 alkyl sulfonate can cause insoluble matters to appear, and the addition of the sodium salt of the C10-C20 alkyl sulfonate can cause insufficient formation of the oil-water emulsion.
The preparation method of the wax remover adopts multiple mixing, defines the mixing sequence of raw materials, firstly mixes the sodium salt of C10-C20 alkyl sulfonate and the nonionic surfactant of C8-C20 alkyl polyether for the first time to be in a liquid state, then adds the organic solvent of C7-C12 aromatic hydrocarbon and the solvent oil of C5-C15 to be mixed for the second time, finally adds water to be mixed for the third time, finally forms water-in-oil emulsion under the ultrasonic action, and the emulsion form can form a microemulsion solution with wax or impurities while dissolving the wax, keeps fluidity and is convenient for taking away the wax or the impurities.
When the paraffin remover is used, the addition amount of condensate oil is controlled to be 50-500 ppm.
The beneficial effects are that: according to the component characteristics of condensate oil, the invention selects the surfactant with proper carbon number alkyl, aromatic hydrocarbon, solvent oil and water to be mixed and compounded to form emulsion, thus having excellent paraffin removal effect; the paraffin remover disclosed by the invention is simple to prepare, low in raw material cost, small in consumption, good in paraffin removal effect and suitable for popularization and use.
Drawings
Fig. 1 is a picture of a paraffin removal experiment for paraffin removal agent of example 1, wherein: FIG. 1 (a) is a state diagram of adding a paraffin scavenger to a condensate; FIG. 1 (b) is a state diagram showing the decomposition of condensate after a certain period of time of the action of paraffin remover with condensate.
Detailed Description
The invention is further described below with reference to examples and figures.
The chemical paraffin remover for condensate well paraffin removal comprises, by volume, 1-10% of C8-C20 alkyl polyether nonionic surfactant, 1-35% of C7-C12 aromatic hydrocarbon organic solvent, 5-50% of C5-C15 solvent oil, 20-65% of water and C10-C20 alkyl sodium sulfonate; the mass volume concentration of the sodium salt of the C10-C20 alkyl sulfonate in the paraffin remover is 10-80 g/L. The components are thoroughly mixed to form a water-in-oil emulsion so as to form a microemulsion solution with the wax or the impurity while dissolving the wax, and keep fluidity, thereby being convenient for taking away the wax or the impurity.
The sodium salt of C10-C20 alkyl sulfonate comprises straight-chain alkyl sodium sulfonate, branched-chain alkyl sodium sulfonate and cycloalkyl sodium sulfonate.
The C8-C20 alkyl polyether nonionic surfactant is at least one selected from fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether and alkylphenol polyoxyethylene.
The C7-C12 aromatic hydrocarbon organic solvent is selected from toluene, xylene, ethylbenzene, trimethylbenzene, n-propylbenzene, isopropylbenzene and the like.
The preparation process of the chemical paraffin remover comprises the following steps:
fully mixing C10-C20 alkyl sodium sulfonate and C8-C20 alkyl polyether nonionic surfactant in a stirring manner to obtain a first mixed solution; then adding the C7-C12 aromatic hydrocarbon organic solvent and the C5-C15 solvent oil into the first mixed solution in a stirring manner, and fully mixing to obtain a second mixed solution; and finally, adding water into the second mixed solution, and fully mixing to form emulsion.
However, the environment of substances in an oil well is complex, and the components of condensate oil are different from one oil well to another or from one production section of the same oil well. In order to improve the paraffin removal effect, when preparing the chemical paraffin removal agent, the preferred method further comprises the steps of: pre-taking a condensate oil sample, and measuring the volume parts of the average carbon number, the highest carbon number and the water content of organic molecules in the condensate oil sample; determining alkyl carbon number according to two-thirds to four-fifths of the average carbon number of condensate oil, and selecting alkyl sodium sulfonate with corresponding carbon number and alkyl polyether nonionic surfactant; determining the carbon number of the aromatic hydrocarbon according to one fifth to one third of the highest carbon number of the condensate oil and selecting an aromatic hydrocarbon organic solvent with the corresponding carbon number; the water content of the chemical paraffin remover is determined according to 1-5 times of the volume fraction of the water content of the condensate.
Through tests, when the volume ratio of the C8-C20 alkyl polyether nonionic surfactant, the C7-C12 aromatic hydrocarbon organic solvent and the C5-C15 solvent oil in the paraffin removal agent is 1 (3-5) (6-10), and the dosage ratio of the C10-C20 alkyl sulfonate sodium salt to the C8-C20 alkyl polyether nonionic surfactant is 1g (0.9-1.2) mL, the paraffin removal effect is better.
Wax removal experiments were performed using several wax removal agents as specific examples. The condensate oil sample used in the experiment is collected from the block condensate oil of the shale gas of Fuling, and the average carbon number of the condensate oil sample is measured to be C24, the highest carbon number is C50, and the water content is 10-15 percent according to the detection method recommended by the industry standard SY/T7550-2012 determination of the content of wax, colloid and asphaltene in crude oil, the SHT 0410-1992 determination of the content of normal paraffins and the carbon number distribution method (gas chromatography) in liquid paraffin and raw materials, and the SY/T5402-2016 determination of the water content of crude oil and the electric dehydration method. The compositions of the paraffin wax removers of examples 1 to 3 are shown in Table 1. The preparation process is specifically described by taking example 1 as an example. The reagents used to formulate the paraffin remover were all commercially available analytically pure reagents.
The paraffin remover of example 1 is prepared from sodium hexadecyl sulfonate, hexadecyl polyether, C10 aromatic hydrocarbon solvent, solvent oil D80 and water. Taking 100mL of total volume of the paraffin remover as an example, the rest accounts for the percentage of the total volume of the paraffin remover, and the preparation steps are as follows:
① Preparing a first mixed solution by carrying out solution blending on 5g of sodium hexadecyl sulfonate and 5mL of hexadecyl polyether at 30 ℃, and applying stirring at the speed of 200 revolutions per minute for 30 minutes in the blending process;
② Respectively adding 20mL of C10 aromatic hydrocarbon solvent and 40mL of solvent oil D80 into the prepared first mixed solution, adding the temperature to 30 ℃, and stirring to ensure full blending, wherein the stirring speed is 500 rpm, and the stirring time is 30min, so as to obtain a second mixed solution;
③ And adding about 30mL of water into the prepared second mixed solution to make the total amount of the mixed solution be 100mL, fully mixing the mixed solution and the second mixed solution through ultrasonic blending to form emulsion, and obtaining the paraffin remover after ultrasonic power is 100W and ultrasonic time is 30 minutes.
When the paraffin removal agent is used, according to the on-site condensate oil components and the actual paraffin removal condition, on the premise of ensuring the paraffin removal effect, a proper amount of water can be added into the paraffin removal agent and mixed to obtain the working solution, and the volume fraction of the water in the working solution is not more than 80 percent so as to save the cost, but the addition amount of the paraffin removal agent in the condensate oil is controlled to be 50-500 ppm.
Referring to the above procedure, paraffin removal agents of examples 2 and 3 and comparative examples 1 to 3 were prepared. Comparative examples 1 to 3 correspond to examples 1 to 3, except that one organic component was reduced and the amount of water was increased, respectively, to obtain paraffin wax remover having the same total volume.
Wax removal experiments are carried out by adopting the wax remover disclosed by the invention and the traditional wax remover, and the effects of the wax remover are compared. According to the oil and gas industry standard SY/T6300-2009, the paraffin removal rate is used as an evaluation index. The paraffin remover prepared was compared with xylene, sodium dodecyl sulfate, polyoxyethylene nonylphenol ether and sodium dialkyl succinate as conventional paraffin remover in evaluation, and the results are shown in Table 1. The same weight of condensate oil samples were taken from each group and tested at 50℃with 15mL of paraffin remover.
The paraffin removal rate is calculated by the following steps:
paraffin removal rate= (original weight-remaining weight)/original weight;
The wax dissolution rate is calculated by the following steps:
wax dissolution rate = (original weight-residual weight)/wax dissolution time.
Table 1 comparison of the paraffin removal effect of the different examples and the comparative examples
As can be seen from comparing the paraffin removal rate and the paraffin dissolution rate of each example with those of the comparative example, the paraffin removal effect was not satisfactory when one paraffin removal agent component was used alone. Particularly, when xylene is used alone as an aromatic hydrocarbon solvent, the wax removal effect is poor. As can be seen by comparing comparative examples 1 to 3 with comparative examples 4 to 7, the wax remover formed by compounding is better in effect than the wax remover formed by the individual components, but is inferior to the wax remover of the present invention, namely examples 1 to 3. It is assumed that the paraffin removal effect of the paraffin removal agent of the present invention is optimal because the sodium salt of an alkyl sulfonate, the nonionic surfactant of an alkyl polyether, and the aromatic hydrocarbon organic solvent act synergistically by comparing examples 1 to 3 with comparative examples 1 to 3, respectively.
As can be seen from comparing the paraffin removal rates and paraffin dissolution rates of examples 1 to 3, the paraffin removal rate was slightly lowered by slightly lowering the content of the C10 aromatic hydrocarbon solvent, but the paraffin dissolution rate was lowered more remarkably, which indicates that the C10 aromatic hydrocarbon solvent plays an important role in dissolving the wax, and affects the paraffin removal operation efficiency. The experimental pictures of the paraffin remover of example 1 when the condensate sample was added and after the paraffin removal for 47min are shown in fig. 1 (a) and 1 (b), respectively, it can be seen that the condensate was decomposed after 47min of action.
Claims (10)
1. A chemical paraffin remover for condensate well paraffin removal, characterized in that: comprises a solvent composition and a sodium salt of C10-C20 alkyl sulfonate;
Wherein the solvent composition comprises, by volume, 1-10% of C8-C20 alkyl polyether nonionic surfactant, 1-35% of C7-C12 aromatic hydrocarbon organic solvent, 5-50% of C5-C15 solvent oil and 20-65% of water, totaling 100%;
the mass volume concentration of the sodium salt of the C10-C20 alkyl sulfonate in the chemical paraffin remover is 10-80 g/L.
2. A chemical paraffin cleaner for condensate removal of oil well as claimed in claim 1, wherein: the components are thoroughly mixed to form a water-in-oil emulsion.
3. Chemical paraffin removal agent for condensate well paraffin removal according to claim 1 or 2, characterized in that: the volume ratio of the C8-C20 alkyl polyether nonionic surfactant to the C7-C12 aromatic hydrocarbon organic solvent to the C5-C15 solvent oil is 1 (3-5) (6-10), and the dosage ratio of the C10-C20 alkyl sodium sulfonate to the C8-C20 alkyl polyether nonionic surfactant is 1g (0.9-1.2) mL.
4. Chemical paraffin removal agent for condensate well paraffin removal according to claim 1 or 2, characterized in that: the C10-C20 sodium alkyl sulfonate is at least one of straight-chain sodium alkyl sulfonate, branched-chain sodium alkyl sulfonate or sodium cycloalkyl sulfonate.
5. Chemical paraffin removal agent for condensate well paraffin removal according to claim 1 or 2, characterized in that: the C8-C20 alkyl polyether nonionic surfactant is at least one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether or alkylphenol polyoxyethylene ether.
6. Chemical paraffin removal agent for condensate well paraffin removal according to claim 1 or 2, characterized in that: the carbon number selection method in the alkyl sodium sulfonate, the alkyl polyether nonionic surfactant and the aromatic hydrocarbon organic solvent comprises the following steps: pre-taking a condensate oil sample, and measuring the volume parts of the average carbon number, the highest carbon number and the water content of organic molecules in the condensate oil sample; determining alkyl carbon number according to two-thirds to four-fifths of the average carbon number of the condensate oil organic molecules, and selecting alkyl sodium sulfonate with corresponding carbon number and alkyl polyether nonionic surfactant; determining the carbon number of the aromatic hydrocarbon according to one fifth to one third of the highest carbon number of the condensate oil and selecting an aromatic hydrocarbon organic solvent with the corresponding carbon number; the water adding amount of the chemical paraffin remover is determined according to 1-5 times of the volume fraction of the water content of the condensate.
7. A process for preparing a chemical paraffin removal agent for condensate well paraffin removal as claimed in any one of claims 1 to 6, characterized in that: fully mixing C10-C20 alkyl sodium sulfonate and C8-C20 alkyl polyether nonionic surfactant to obtain a first mixed solution; then adding the C7-C12 aromatic hydrocarbon organic solvent and the C5-C15 solvent oil into the first mixed solution and fully mixing to obtain a second mixed solution; and finally, adding water into the second mixed solution, and fully mixing to form emulsion.
8. The method for preparing a chemical paraffin removal agent for condensate well paraffin removal as claimed in claim 7, wherein: controlling the mixing and stirring speed of the first mixed solution and the second mixed solution in the preparation process to be 60-300 rmp/min.
9. The method for preparing a chemical paraffin removal agent for condensate well paraffin removal as claimed in claim 7, wherein: after adding water to the second mixed solution, the second mixed solution is blended by ultrasonic waves to form emulsion.
10. The method for preparing a chemical paraffin removal agent for condensate well paraffin removal according to claim 9, wherein: the ultrasonic power is 120W, and the ultrasonic time is 30min.
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