CN109679612B

CN109679612B - Solid oil-resistant foam drainage agent composition, preparation method and application thereof

Info

Publication number: CN109679612B
Application number: CN201710969679.9A
Authority: CN
Inventors: 何秀娟; 陈海龙; 徐晓菁; 吴春芳
Original assignee: China Petroleum and Chemical Corp; Sinopec Shanghai Research Institute of Petrochemical Technology
Current assignee: China Petroleum and Chemical Corp; Sinopec Shanghai Research Institute of Petrochemical Technology
Priority date: 2017-10-18
Filing date: 2017-10-18
Publication date: 2021-05-28
Anticipated expiration: 2037-10-18
Also published as: CN109679612A

Abstract

The invention relates to a solid foam drainage agent composition, and a preparation method and application thereof. The problems that the oil resistance of foam formed by the existing foam drainage agent is insufficient and the foam drainage performance is poor in the development process of a condensate oil and gas well, so that liquid is accumulated at the bottom of the well, the gas well is reduced in yield and even stops spraying, and the liquid foam drainage agent is difficult to fill are mainly solved. The invention comprises the following components in parts by mass: (1)1 part of alkylamine polyether benzene sulfonate; (2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound; (3) 0.2-100 parts of solid filler; (4) 0-0.5 parts of adhesive; wherein the alkylamine polyether benzenesulfonate is represented by formula (I); the nitrogen-containing long-chain polyether compound is shown as a formula (II); r¹Is C₈～C₂₀Any one of the alkyl groups of (a); r₁Is C₁₀～C₂₆The technical scheme of the fat base well solves the problem and can be used in the drainage and gas production industry of gas wells.

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Description

Solid oil-resistant foam drainage agent composition, preparation method and application thereof

Technical Field

The invention relates to a solid foam drainage agent composition, a preparation method and application thereof, in particular to a solid foam drainage agent composition for a gas well containing condensate oil and gas, a preparation method and application thereof.

Background

With the enhancement of the exploitation strength of the gas field, the water output of the gas field becomes a key problem restricting the normal production of the gas well. Foam drainage gas production is a drainage gas production technology which is rapidly developed at home and abroad in recent years, and has the advantages of simple equipment, convenience in construction, low cost, wide applicable well depth range, no influence on normal production of gas wells and the like. Foam drainage is to inject foam drainage agent into a well through an oil pipe or an oil casing ring, and foam with certain stability is generated under the stirring of airflow. The liquid phase slipped and deposited in the pipe is changed into foam, the relative density of fluid at the lower part in the pipe is changed, and the continuously produced gas phase displacement foam flows out of the shaft, so that the accumulated liquid in the shaft is discharged, and the purposes of water drainage and gas production are achieved.

However, foams are "oil sensitive" in that after the crude oil contacts the foam, it spreads or emulsifies in gas-liquid and films, entering the foam structure under the action of external forces and interfacial tension, causing the foam to lose stability upon contact with oil.

The most oil-resistant foam system reported at present is a fluorocarbon surfactant, and because hydrogen atoms in a hydrophobic chain of the fluorocarbon surfactant are replaced by fluorine atoms, the hydrophobic chain of the fluorocarbon surfactant is hydrophobic and oleophobic, so that the oil resistance of the foam is improved. However, fluorocarbon surfactants are expensive to produce, have poor biocompatibility, may cause a series of environmental and safety problems when applied on a large scale, and thus cannot replace hydrocarbon surfactants despite their excellent performance.

The development of foam drainage agent since the sixties of the last century is carried out abroad, and surfactants such as sulfonate, benzene sulfonate, alkylphenol polyoxyethylene and the like are mostly selected. At present, a multi-component compound system is mostly adopted in the foam drainage agent for drainage and gas production, and in order to enhance the stability of single foam, auxiliaries such as alkali, alcohol, polymer, alkanolamide and the like are usually added into a formula to form reinforced foam. US20120279715 reports a foam fluid for increasing oil yield by recovering gas in a gas well, which is an amido group-containing quaternary ammonium salt surfactant with foam discharging and sterilizing functions, a hydrophobic chain is a hydrophobic segment in substituted naphthalene ring, benzene ring or natural oil ester, and has strong chlorine resistance and condensate oil resistance, 20% of condensate oil content is reduced from 86.8% to 51.0% and 50% of condensate oil content is reduced to 29% under the condition that the nitrogen injection speed is 7/min. However, the molecular structure contains amide groups which are sensitive to high temperature, so that the gas well adaptability of the gas well above 100 ℃ is poor.

China is a technology for researching foam drainage and gas production from the last 80 years, and the literature 'research and application of foam performance of novel efficient salt-tolerant oil-resistant solid foam drainage agent KHD 580A' reports that the condensate oil content of an oil-resistant foam drainage agent is 20% and the drainage amount is reduced by 23%.

The foam water discharging agent is mainly an aqueous agent, has the limitation of a plurality of factors such as transportation, storage and the like, and is troublesome to fill on site. CN 105062453A discloses a solid foam drainage agent for gas fields and a preparation method thereof, wherein raw materials comprise sodium dodecyl sulfate, alkylphenol polyoxyethylene, polyacrylamide, trisodium citrate and thiourea, and the solid foam drainage agent has good foam drainage performance. However, sodium dodecyl sulfate contains a sulfate bond, and the temperature resistance is insufficient.

Disclosure of Invention

The invention aims to solve the technical problems that the oil resistance and the temperature resistance of foam formed by the existing foam drainage agent are insufficient in the development process of a gas well, the drainage performance of the foam is poor, so that liquid accumulation at the bottom of the well, the yield of the gas well is reduced, even the spraying is stopped and the liquid filling is difficult.

The second technical problem to be solved by the present invention is to provide a method for preparing a solid foam drainage agent composition corresponding to the first technical problem.

The third technical problem to be solved by the present invention is to provide an application method of the foam drainage agent composition for solid drainage gas production corresponding to the solution of one of the above technical problems.

In order to solve one of the above technical problems, the technical scheme adopted by the invention is as follows: the solid foam drainage agent composition for drainage and gas production comprises the following components in parts by mass:

(1)1 part of alkylamine polyether benzene sulfonate;

(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;

(3) 0.2-100 parts of solid filler;

(4)0 to 0.5 parts of adhesive.

In the above technical solution, the general molecular formula of the alkylamine polyether benzenesulfonate is preferably:

wherein R is¹Is C₈～C₂₀Any one of the alkyl groups of (a); m, n, p and q are any number of 0-20 independently, and m + n is more than or equal to 1. Further, m + p is preferably any number of 1 to 5, n + q is preferably any number of 5 to 15, and X is at least one of an alkali metal ion and an ammonium ion.

In the above technical solution, the molecular general formula of the long-chain polyether nitrogen-containing compound is preferably:

wherein R is₁Is C₁₀～C₂₆Fatty radical or C of₁₀～C₂₆An aromatic group of (a); y is 0-20, and z is 0-60; r₄、R₅Is independently selected from C₁～C₅Alkyl of (C)₁～C₅Any one of the substituted alkyl groups of (a); r₆、R₇Is independently selected from C₁～C₅Alkylene of (C)₁～C₅Any one of the substituted alkylene groups of (a); y is selected from anionic groups which render the molecule of formula (II) electrically neutral; further, R₁Preferably C₁₀～C₂₀Alkyl of (C)₁₀～C₂₀Of an alkylbenzene of, R₇Preferably C₂H₄Or C₃H₆Z is preferably greater than 0.

In the above-mentioned embodiments, Y may be any anionic group which renders the general molecular formula (II) electrically neutral, and for example, Y is preferably, but not limited to, -COO^—、-SO₃ ^—、-HPO₄ ^—Is more preferably-COO^—、-SO₃ ^—At least one of (1).

In the above technical solution, the solid filler is at least one of carbonate, bicarbonate, sulfate, phosphate, borate, metal halide, formate, acetate, tartaric acid and salts, citric acid and salts, phthalic acid and salts, gallic acid and salts, urea, biuret, and the like; the adhesive is at least one of dextrin, epoxy resin, polyacrylamide, starch, cellulose, polyethylene glycol and the like.

In the above technical solution, the solid filler is preferably at least one of sodium carbonate, sodium bicarbonate, sodium borate, sodium chloride, sodium acetate, tartaric acid, sodium tartrate, citric acid, sodium citrate, potassium phthalate, urea, and biuret.

In the above technical solution, the binder is preferably at least one of polyacrylamide, starch, and polyethylene glycol.

The foam water discharging agent composition provided by the invention has no special requirement on water during preparation, and can be deionized water or water containing inorganic mineral substances, and the water containing the inorganic mineral substances can be tap water, oil field formation water or oil field injection water.

To solve the second technical problem, the invention adopts the following technical scheme: a method for preparing a solid foam drainage agent composition according to any one of the above technical solutions to solve the technical problems, wherein when the binder is not equal to 0 part, the method for preparing the foam drainage agent composition comprises the following steps:

(1) uniformly mixing the alkylamine polyether benzene sulfonate, the long-chain polyether nitrogen-containing compound and the solid filler according to the required mass portion to obtain a mixture;

(2) adding water into the adhesive until the adhesive is completely dissolved to obtain an adhesive solution;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to obtain a solid foam drainage rod, namely the solid foam drainage agent composition;

when the binder is equal to 0 part, the preparation method of the foam drainage agent composition comprises the following steps:

(2) and then pressing and molding the mixture to obtain the solid foam drainage agent composition.

To solve the second technical problem, the invention adopts the following technical scheme: use of the solid foam drainage agent composition according to any one of the above-mentioned technical solutions to solve the technical problems in drainage and gas production.

In the above technical scheme, the application has no special requirement, and a person skilled in the art can use the foam drainage agent composition of the present invention according to the actual application environment, for example, but not limited to, the content of the condensate oil in the application is 0-30%.

The foam water discharging agent composition has good compatibility, and can also contain other treating agents commonly used in the field.

The alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound in the foam discharging agent composition contain multi-hydrophilic-group functional groups, on one hand, the multi-hydrophilic-group functional groups enable the amount of bound water and bound water carried by a foaming agent to be increased, the liquid carrying amount of the foam to be enhanced and the liquid precipitation to be slowed down, on the other hand, the multi-hydrophilic-group functional groups enhance the hydrophilicity of the foaming agent, reduce lipophilicity and increase the oil-water interfacial tension, and therefore the foam discharging agent composition has good oil resistance. In addition, the thermal decomposition temperature of the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound is 200 ℃, and the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound are not hydrolyzed in an aqueous solution, so that the alkylamine polyether benzene sulfonate and the long-chain polyether nitrogen-containing compound can be applied to the high-temperature deep well drainage gas production process at 180 ℃.

By adopting the technical scheme of the invention, the foam performance test is carried out on the foam water discharging agent according to SY/T6465-2000 foamer evaluation method for foam water discharging and gas production, in 100,000mg/L salinity brine, the foaming height is more than 140mm, the condensate oil content is 0-30%, the liquid carrying amount is more than 140mL, the high-temperature aging is carried out at 180 ℃ for 24h, the foam foaming height and the drainage performance change rate are less than 5%, and the foam water discharging agent has good temperature resistance, foaming performance, liquid carrying capacity and oil resistance, and obtains good technical effects.

The invention is further illustrated by the following examples.

Drawings

FIG. 1 shows a liquid carrying amount measuring apparatus (the height of a jacketed vessel is 1 m).

Detailed Description

In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.

[ example 1 ]

(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine polyether benzene sulfonate, 20 g of long-chain polyether nitrogen-containing compound and 30 g of sodium sulfate to obtain a mixture;

(2)0.1 g of polyacrylamide is added with 1 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to obtain the solid foam drainage rod FS-1, wherein the component structure of the solid foam drainage rod FS-1 is detailed in Table 1.

[ example 2 ]

(1) Under normal temperature and pressure, 5 g of alkylamine polyether benzene sulfonate, 50 g of long-chain polyether nitrogen-containing compound, 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea are uniformly mixed to obtain a mixture;

(2) 0.5 g of polyethylene glycol is added with 2 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-2, wherein the component structure of the solid foam drainage rod FS-2 is detailed in table 1.

[ example 3 ]

(1) Under normal temperature and pressure, evenly mixing 50 g of alkylamine polyether benzene sulfonate, 10 g of long-chain polyether nitrogen-containing compound, 10 g of urea and 1 g of citric acid to obtain a mixture;

(2) adding 0.1 g of starch and 2 g of water into the mixture, and stirring the mixture until the starch is completely dissolved to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-3, wherein the component structure of the solid foam drainage rod FS-3 is detailed in table 1.

[ example 4 ]

(1) Under normal temperature and pressure, evenly mixing 20 g of alkylamine polyether benzene sulfonate, 20 g of long-chain polyether nitrogen-containing compound, 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate to obtain a mixture;

(2) 0.01 g of polyacrylamide is added with 0.5 g of water and stirred until the polyacrylamide is completely dissolved, so as to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-4, wherein the component structure of the solid foam drainage rod FS-4 is detailed in Table 1.

[ example 5 ]

(1) Under normal temperature and pressure, evenly mixing 20 g of alkylamine polyether benzene sulfonate, 10 g of long-chain polyether nitrogen-containing compound, 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret to obtain a mixture;

(2)0.1 g of polyethylene glycol is added with 1.0 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-5, wherein the component structure of the solid foam drainage rod FS-5 is detailed in table 1.

[ example 6 ]

(1) Under normal temperature and pressure, evenly mixing 10 g of alkylamine polyether benzene sulfonate, 30 g of long-chain polyether nitrogen-containing compound, 30 g of urea and 1 g of sodium bicarbonate to obtain a mixture;

(2) adding 0.1 g of cellulose and 1.0 g of water into the mixture, and stirring the mixture until the cellulose is completely dissolved to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-6, wherein the component structure of the solid foam drainage rod FS-6 is detailed in Table 1.

[ example 7 ]

(1) Under normal temperature and pressure, 1 g of alkylamine polyether benzene sulfonate, 50 g of long-chain polyether nitrogen-containing compound, 70 g of sodium sulfate and 30 g of urea are uniformly mixed to obtain a mixture;

(2) 0.2 g of polyethylene glycol is added with 1.5 g of water and stirred until the polyethylene glycol is completely dissolved, so as to obtain an adhesive solution;

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-7, wherein the component structure of the solid foam drainage rod FS-7 is detailed in Table 1.

[ example 8 ]

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-8, wherein the component structure of the solid foam drainage rod FS-8 is detailed in Table 1.

[ example 9 ]

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-9, wherein the component structure of the solid foam drainage rod FS-9 is detailed in table 1.

[ example 10 ]

(3) and (3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain the solid foam drainage rod FS-10, wherein the component structure of the solid foam drainage rod FS-10 is detailed in Table 1.

[ example 11 ]

(2) the above samples were press molded to produce solid foam drainage bars FS-11, the composition of which is detailed in Table 1.

[ example 12 ]

1 g of a simulated aqueous solution having a degree of mineralization of 100,000mg/L was weighed and dissolved in the solid foam drainage stick of examples 1 to 11 at normal temperature and pressure to prepare a solution of 3000 mg/L.

[ example 13 ]

The initial foaming height of the foam drainage agent and the foaming height after 5 minutes were measured according to SY/T6465-.

5000mL/min of nitrogen gas was continuously introduced into the foam drainage agent aqueous solution having condensate volume contents of 0, 15% and 30%, respectively, and the amount of foam carried over a period of 15 minutes was measured, and the results are shown in Table 2. The liquid carrying amount measuring apparatus used is shown in FIG. 1.

An experiment is carried out by adopting a pressure-resistant acid-resistant aging device, after aging at the high temperature of 180 ℃ for 24 hours, the initial foaming height of the foam drainage agent, the foaming height after 5 minutes and the foam drainage performance when the condensate content is respectively 0,15 percent and 30 percent are re-determined according to the method, and the results are shown in Table 2.

[ COMPARATIVE EXAMPLE 1 ]

(1) Using 30 g of alkylamine polyether benzenesulfonate in example 1, without adding long-chain polyether nitrogen-containing compound, mixing with 30 g of sodium sulfate at normal temperature and pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S1;

(4) 1 g of FS-S1 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 2 ]

(1) Using 55 g of alkylamine polyether benzenesulfonate in [ example 2 ], without adding long-chain polyether nitrogen-containing compound, uniformly mixing with 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S2;

(4) 1 g of FS-S2 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 3 ]

(1) Using 60 g of alkylamine polyether benzenesulfonate in [ example 3 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 10 g of urea and 1 g of citric acid at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S3;

(4) 1 g of FS-S3 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 4 ]

(1) Using 40 g of alkylamine polyether benzenesulfonate in [ example 4 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S4;

(4) 1 g of FS-S4 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 5 ]

(1) Using 30 g of alkylamine polyether benzenesulfonate in [ example 5 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S5;

(4) 1 g of FS-S5 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 6 ]

(1) Using 40 g of alkylamine polyether benzenesulfonate in [ example 6 ], adding no long-chain polyether nitrogen-containing compound, and uniformly mixing with 30 g of urea and 1 g of sodium bicarbonate at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S6;

(4) 1 g of FS-S6 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 3.

[ COMPARATIVE EXAMPLE 7 ]

(1) Using 30 g of the long-chain polyether nitrogen-containing compound in example 1, adding no alkylamine polyether benzene sulfonate, and uniformly mixing the long-chain polyether nitrogen-containing compound and 30 g of sodium sulfate at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S7;

(4) 1 g of FS-S7 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

[ COMPARATIVE EXAMPLE 8 ]

(1) Using 55 g of the long-chain polyether nitrogen-containing compound in example 2, without adding alkylamine polyether benzenesulfonate, uniformly mixing with 30 g of sodium sulfate, 10 g of sodium carbonate, 30 g of sodium bicarbonate and 30 g of urea at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S8;

(4) 1 g of FS-S8 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

[ COMPARATIVE EXAMPLE 9 ]

(1) 60 g of the long-chain polyether nitrogen-containing compound in example 3 was used, and 10 g of urea and 1 g of citric acid were uniformly mixed at normal temperature and pressure without adding alkylamine polyether benzenesulfonate to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S9;

(4) 1 g of FS-S9 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

[ COMPARATIVE EXAMPLE 10 ]

(1) Using 40 g of the long-chain polyether in [ example 4 ] containing nitrogen, adding no alkylamine polyether benzenesulfonate compound, and uniformly mixing with 20 g of urea, 5 g of sodium chloride and 1 g of sodium citrate at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S10;

(4) 1 g of FS-S10 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

[ COMPARATIVE EXAMPLE 11 ]

(1) Using 30 g of the long-chain polyether nitrogen-containing compound in example 5, adding no alkylamine polyether benzene sulfonate, and uniformly mixing with 7 g of sodium bicarbonate, 1 g of sodium borate, 2 g of sodium tartrate and 1 g of biuret at normal temperature and normal pressure to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S11;

(4) 1 g of FS-S11 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

[ COMPARATIVE EXAMPLE 12 ]

(1) 40 g of the long-chain polyether nitrogen-containing compound in example 6 was used, and the mixture was uniformly mixed with 30 g of urea and 1 g of sodium bicarbonate at normal temperature and pressure without adding alkylamine polyether benzenesulfonate to obtain a mixture;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and performing compression molding to obtain a solid foam drainage rod FS-S12;

(4) 1 g of FS-S12 solid was weighed and dissolved in a simulated aqueous solution with a degree of mineralization of 100,000mg/L to prepare a solution of 3000mg/L, and the initial height of foam of the foam discharging agent and the height of foam after 5 minutes were measured to perform foam discharging performance tests, and the results are shown in Table 4.

Composition component Structure in the examples of Table 1

Foam Properties of the foam drainage agent compositions in the examples of Table 2

TABLE 3 foaming Properties of the foam drainage agent compositions of comparative examples 1 to 6

TABLE 4 foaming Properties of the foam drainage agent compositions of comparative examples 7 to 2

Claims

1. A foam drainage agent composition comprises the following components in parts by weight:

(1)1 part of alkylamine polyether benzene sulfonate;

(2) 0.1-50 parts of a long-chain polyether nitrogen-containing compound;

(3) 0.2-100 parts of solid filler;

(4) 0-0.5 parts of adhesive;

wherein, the alkylamine polyether benzene sulfonate has a molecular general formula shown in a formula (I):

in the formula (I), R¹Is C₈～C₂₀Any one of the alkyl groups of (a); m, n, p and q are any number of 0-20, m + p is any number of 1-5, n + q is any number of 5-15, m + n is not less than 1, and X is at least one of alkali metal ions or ammonium ions;

the long-chain polyether nitrogen-containing compound has a molecular general formula shown in a formula (II):

in the formula (II), R₁Is C₁₀～C₂₆Fatty radical or C of₁₀～C₂₆An aromatic group of (a); y is 0-20, and z is 0-60; r₄、R₅Is independently selected from C₁～C₅Alkyl of (C)₁～C₅Any one of the substituted alkyl groups of (a); r₆、R₇Is independently selected from C₁～C₅Alkylene, substituted alkylene of (a); y is selected from anionic groups which render the molecule of formula (II) electrically neutral.

2. The foam drainage agent composition according to claim 1, wherein the solid filler is at least one of carbonate, bicarbonate, sulfate, phosphate, borate, metal halide, formate, acetate, tartaric acid and salts, citric acid and salts, phthalic acid and salts, gallic acid and salts, urea, and biuret.

3. The foam drainage agent composition of claim 1, wherein the binder is at least one of dextrin, epoxy resin, polyacrylamide, starch, cellulose, and polyethylene glycol.

4. The foam drainage agent composition according to claim 1, wherein R is₁Is C₁₀～C₂₀Alkyl or C₁₀～C₂₀Alkyl phenyl of R₇Is C₂H₄Or C₃H₆。

5. The foam drainage agent composition of claim 1, wherein z is greater than 0.

6. The foam drainage agent composition of claim 1, wherein the solid filler is at least one of sodium carbonate, sodium bicarbonate, sodium borate, sodium chloride, sodium acetate, tartaric acid, sodium tartrate, citric acid, sodium citrate, potassium phthalate, urea, and biuret.

7. The foam drainage agent composition of claim 1, wherein the binder is at least one of polyacrylamide, starch, and polyethylene glycol.

8. A method for preparing the foam drainage agent composition according to any one of claims 1 to 7, wherein when the binder is not equal to 0 part, the method for preparing the foam drainage agent composition comprises the following steps:

(2) adding water to the adhesive until the adhesive is completely dissolved to obtain an adhesive solution;

(3) uniformly mixing the mixture obtained in the step (1) and the adhesive solution obtained in the step (2), and pressing and forming to obtain a solid foam drainage rod, namely the foam drainage agent composition;

(2) and then pressing and molding the mixture to obtain the solid foam water discharging agent composition.

9. Use of the foamed drainage agent composition according to any one of claims 1 to 7 in drainage and gas production.