CN111171801A - Preparation method of self-assembled cleaning acid tackifier - Google Patents
Preparation method of self-assembled cleaning acid tackifier Download PDFInfo
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- CN111171801A CN111171801A CN201811346666.7A CN201811346666A CN111171801A CN 111171801 A CN111171801 A CN 111171801A CN 201811346666 A CN201811346666 A CN 201811346666A CN 111171801 A CN111171801 A CN 111171801A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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Abstract
The invention provides a preparation method of a tackifier, which comprises the following steps: 1) mixing polyalcohol and/or polyalcohol amine with water to obtain a first solution; 2) adding an ionic liquid surfactant to the first solution to obtain the viscosifier.
Description
Technical Field
The invention provides a self-assembly cleaning acid tackifier and a preparation method thereof.
Background
Ground crosslinked acid and gelled acid are the most common acid systems for acid fracturing modification of high-temperature fracture-cavity carbonate rock. The ground crosslinked acid is crosslinked into a gel structure through organic zirconium or organic titanium to synthesize a polymer, has good retarding and temperature resistance, but has the problems of difficult gel breaking and high damage to a reservoir stratum, and cannot meet the acid fracturing or acidification requirements of compact porous carbonate rock. The viscosity of the gel acid which is not crosslinked is low at high temperature, so that acidification or short acid pressure etching distance can be caused, and deep penetration cannot be realized.
Therefore, it is urgently needed to develop a novel low-damage and low-speed acid solution system.
Disclosure of Invention
The invention provides a preparation method of a tackifier, which comprises the following steps:
1) mixing polyalcohol and/or polyalcohol amine with water to obtain a first solution;
2) adding an ionic liquid surfactant to the first solution to obtain the viscosifier.
In one embodiment, the polyol comprises at least one selected from the group consisting of glycerol, ethylene glycol, xylitol, sorbitol, and pentaerythritol.
In one embodiment, the polyalcohol amine comprises at least one selected from the group consisting of ethylene glycol, triethanolamine and diethanolamine.
In one embodiment, the ionic liquid surfactant comprises at least one selected from the group consisting of triethanolamine dodecylbenzene sulfonate, diethanolamine dodecylbenzene sulfonate, ethanolamine dodecylbenzene sulfonate, triethanolamine dodecylsulfate, diethanolamine dodecylsulfate, ethanolamine dodecylsulfate, triethanolamine dodecylsulfate, diethanolamine dodecylsulfonic acid, ethanolamine dodecylsulfonic acid.
In one specific embodiment, the total content of the polyhydric alcohol and/or the polyalcohol amine is 15-35% by mass percentage, and the ionic liquid surfactant is 30-50%.
In one specific embodiment, the total content of the polyhydric alcohol and/or the polyalcohol amine is 15-30% by mass percentage, and the ionic liquid surfactant is 35-45%.
In one embodiment, in step 1), the polyol and/or polyalcohol amine is mixed with water uniformly under stirring at a first stirring speed.
In a particular embodiment, the tackifier is obtained after stirring at 40 to 60 ℃ for 1 to 2 hours at the second stirring speed in step 2).
In one embodiment, the first stirring speed and the second stirring speed are independently selected from 500 to 1000 r/min.
The second invention provides the tackifier prepared by the preparation method in any one of the first invention.
In one embodiment, the tackifier is used at natural ambient temperatures.
The invention has the beneficial effects that:
the tackifier prepared by the method can greatly increase the viscosity and elasticity of the acid liquor, and improve the temperature resistance, shear resistance and slow speed performance of the acid liquor, so that the acid rock reaction rate is reduced. The self-assembly thickener and the self-assembly cleaning thickener are self-assembled to form a physically cross-linked three-dimensional network structure, and after the acid rock reaction is finished, the gel is automatically broken, no residue is generated, and the damage to a reservoir stratum is low. In addition, the self-assembled cleaning acid tackifier has simple preparation method and low cost, and can greatly reduce the cost of the acid.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary of the invention and are not to be construed as limiting the invention in any way.
The starting materials used in the present invention are commercially available unless otherwise specified.
Example 1
1) Adding 15 parts by mass of ethylene glycol into 55 parts by mass of water, and uniformly stirring at 500 r/min;
2) heating the solution in the step 1) to 40 ℃, then gradually adding 30 parts by mass of triethanolamine dodecylbenzene sulfonate into the solution in the step 1), and stirring for 1 hour at 500 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 2
1) Adding 30 parts by mass of glycerol into 25 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 45 parts by mass of lauryl sulfuric acid triethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 3
1) Adding 35 parts by mass of triethanolamine into 15 parts by mass of water, and uniformly stirring at 1000 r/min;
2) heating the solution in the step 1) to 60 ℃, then gradually adding 50 parts by mass of lauryl sulfuric acid triethanolamine salt into the solution in the step 1), and stirring for 2 hours at 1000 r/min;
3) and cooling to 25 ℃ to obtain the self-assembly cleaning acid liquid tackifier.
Example 4
1) Adding 25 parts by mass of sorbitol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of triethanolamine dodecylbenzene sulfonate into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 5
1) Adding 25 parts by mass of xylitol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecylbenzene sulfonic acid diethanol amine salt into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) and cooling to 25 ℃ to obtain the self-assembly cleaning acid liquid tackifier.
Example 6
1) Adding 25 parts by mass of pentaerythritol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecylbenzene sulfonic acid ethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 7
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of lauryl sulfuric acid triethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 8
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 600 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecyl sulfate diethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 9
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of lauryl sulfuric acid ethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 10
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of triethanolamine dodecylsulfonate into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 11
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecyl sulfonic acid diethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 12
1) Adding 25 parts by mass of glycol into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecyl sulfonic acid ethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 13
1) Adding 25 parts by mass of triethanolamine into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecyl sulfonic acid ethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 14
1) Adding 25 parts by mass of diethanolamine into 35 parts by mass of water, and uniformly stirring at 800 r/min;
2) heating the solution in the step 1) to 50 ℃, then gradually adding 40 parts by mass of dodecyl sulfonic acid ethanolamine salt into the solution in the step 1), and stirring for 1.5 hours at the speed of 800 r/min;
3) cooling to 25 ℃ to obtain the tackifier for the self-assembly cleaning acid liquor.
Example 15
To further demonstrate the technical effect of the present invention, the performance of the tackifiers of examples 1-14 were tested.
1) The self-assembled cleaning acid liquid base solution is prepared from the following components in parts by mass: taking 96.0 parts by mass of a 15 wt% hydrochloric acid solution, slowly adding 1.0 part by mass of a self-assembly cleaning acid solution thickener at the rotating speed of 500r/min, continuously stirring for half an hour at the rotating speed of 500r/min to form a uniform solution, then adding 1.2 parts by mass of an iron ion stabilizer, namely ethylene diamine tetraacetic acid and 2.0 parts by mass of 1-aminoethyl-2-pentadecylimidazoline quaternary ammonium salt (sold in the market), uniformly stirring at the rotating speed of 500r/min, sealing, standing at room temperature and standing for 4 hours.
Wherein, the self-assembly cleaning acid thickener is prepared as follows:
A) preparing a polymerization monomer aqueous solution, adding 42 parts of acrylamide, 56 parts of AMPS and 2.0 parts of methacryloyloxyethyl dimethyl hexadecyl ammonium bromide into a beaker according to parts by mass, and adding distilled water for dissolving to obtain a monomer aqueous solution, wherein the total mass content of the three monomers is 26 wt%;
B) adding 2.0% of thiourea, 0.04% of potassium formate, 0.03% of triethylene tetramine pentaacetic acid pentasodium and 0.08% of N, N-tetramethyl ethylene diamine into the monomer aqueous solution (the total mass of the three monomers is 100%), stirring and dissolving uniformly, putting into a water bath at 10 ℃ for cooling for 30min, and cooling to 10 ℃;
C) adding a certain amount of sodium hydroxide into the liquid obtained in the step B) to adjust the pH value to 7.0, continuously cooling for 30min, putting the liquid into a water bath at 10 ℃ to cool the temperature to 10 ℃, introducing the liquid into a heat insulation polymerization device, and introducing nitrogen for 20 min;
D) adding 0.05% of azobisisobutyrimidazoline hydrochloride, 0.015% of sodium sulfite and 0.03% of potassium persulfate aqueous solution into the liquid obtained in the step C), continuously introducing nitrogen for 20min until the mixture becomes viscous, and stopping introducing the nitrogen;
E) observing the temperature change of the system, and polymerizing to obtain a rubber block after the temperature of the system rises to 70 ℃ and the temperature is kept for 5 hours;
F) and taking out the gel block obtained by polymerization, granulating, drying at 70 ℃ until the water content is 5 wt%, crushing, and sieving by a 30-mesh sieve to obtain the self-assembled cleaning acid thickener dry powder.
2) The base solution was mixed with 1.5 parts by mass of each of the tackifiers prepared in examples 1 to 14, and stirred for 8min to form a self-assembled cleaning acid solution system.
3) Self-assembled clear prepared by step 2) according to industrial standard SY/T5107-2005The temperature resistance and the shearing resistance of the acid cleaning liquid are evaluated by the temperature of 160 ℃ and 170s-1And shearing for 1h to measure the temperature resistance and shearing resistance of the self-assembled cleaning acid solution.
4) And (3) evaluating the gel breaking performance of the self-assembled cleaning acid liquid prepared in the step 2) according to an industrial standard SY/T5107-2005. To 100ml of the above acid solution, 0.5% sodium bromate was added, gel breaking time was observed at 90 ℃ and the gel breaking residue was measured at room temperature.
TABLE 1 tackifying performance and temperature and shear resistance
The performance test results show that the self-assembled cleaning acid liquid tackified by the tackifier disclosed by the invention has good delayed tackifying performance, tackifying performance and temperature and shear resistance. The tackified self-assembled clean acid liquid system can thoroughly break the gel, has low content of gel breaking liquid residues, and has wide application prospect.
While the present application has been described with reference to specific embodiments, those skilled in the art will appreciate that various changes can be made without departing from the true spirit and scope of the present application. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, and method to the objective, spirit and scope of the present application. All such modifications are intended to be included within the scope of the claims of this application.
Claims (10)
1. A method for preparing a tackifier, comprising the steps of:
1) mixing polyalcohol and/or polyalcohol amine with water to obtain a first solution;
2) adding an ionic liquid surfactant to the first solution to obtain the viscosifier.
2. The method according to claim 1, wherein the polyol comprises at least one selected from the group consisting of glycerol, ethylene glycol, xylitol, sorbitol, and pentaerythritol.
3. The production method according to claim 1 or 2, characterized in that the polyalcohol amine comprises at least one selected from the group consisting of ethylene glycol, triethanolamine and diethanolamine.
4. The production method according to any one of claims 1 to 3, characterized in that the ionic liquid surfactant comprises at least one selected from the group consisting of triethanolamine dodecylbenzene sulfonate, diethanolamine dodecylbenzene sulfonate, ethanolamine dodecylbenzene sulfonate, triethanolamine dodecylsulfate, diethanolamine dodecylsulfate, ethanolamine dodecylsulfate, triethanolamine dodecylsulfonic acid, diethanolamine dodecylsulfonic acid, ethanolamine dodecylsulfonic acid.
5. The method according to any one of claims 1 to 4, wherein the total content of the polyol and/or the polyol amine is 15 to 35% by mass, and the ionic liquid surfactant is 30 to 50% by mass.
6. The preparation method according to claim 5, characterized in that the total content of the polyhydric alcohol and/or the polyhydric alcohol amine is 15-30% by mass, and the ionic liquid surfactant is 35-45%.
7. The method according to any one of claims 1 to 6, wherein in step 1), the polyol and/or the polyalcohol amine is mixed with water uniformly under stirring at a first stirring speed; and/or
In step 2), the tackifier is obtained after stirring at a second stirring speed for 1 to 2 hours at 40 to 60 ℃.
8. The method of claim 7, wherein the first stirring speed and the second stirring speed are independently selected from 500 to 1000 r/min.
9. The tackifier produced by the production method according to any one of claims 1 to 8.
10. The adhesion promoter of claim 9, wherein the adhesion promoter is used at ambient temperature.
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| CN201811346666.7A CN111171801A (en) | 2018-11-13 | 2018-11-13 | Preparation method of self-assembled cleaning acid tackifier |
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Application publication date: 20200519 |