CN113372888A - Preparation method of oil-base-like drilling fluid and product thereof - Google Patents
Preparation method of oil-base-like drilling fluid and product thereof Download PDFInfo
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- CN113372888A CN113372888A CN202110752973.0A CN202110752973A CN113372888A CN 113372888 A CN113372888 A CN 113372888A CN 202110752973 A CN202110752973 A CN 202110752973A CN 113372888 A CN113372888 A CN 113372888A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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Abstract
The invention discloses a preparation method of oil-based drilling fluid, which is mainly prepared by mixing the following components: the oil-based drilling fluid comprises a polyamine inhibitor, cationic polyacrylamide, low-viscosity polyanionic cellulose, xanthan gum, a lubricant and a proper amount of water, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the volume fraction of the polyamine inhibitor is 2-4%, and the mass concentration of the cationic polyacrylamide is 5-10 kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 5-15 kg/m3The mass concentration of the xanthan gum is 1-5 kg/m3And the volume fraction of the lubricant is 1-3%. The preparation method is simple. The invention also discloses the oil-based drilling fluid prepared by the preparation method, which has strong inhibition, is close to the oil-based drilling fluid, meets the environmental protection requirement and has good performanceGood salt resistance and inhibition, i.e. with the beneficial effect of reducing drill cuttings and waste mud.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration and exploitation. More particularly, the invention relates to a preparation method of oil-based drilling fluid and a product thereof.
Background
With the continuous development of oil and gas exploration and development and the urgent need of national green development, the environmental regulations for discharging drill cuttings and waste mud are more and more strict, the use of oil-based mud and non-environment-friendly water-based drilling fluid is limited, and the existing water-based mud systems are limited in the aspects of inhibition, drilling rate, maintenance and the like. In response to the limitations and drawbacks of current high performance mud applications, it is imperative to develop an oil-based drilling fluid with the objective of reducing drill cuttings and waste mud.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide a preparation method of the oil-based drilling fluid, which is simple and quick to prepare and saves time.
The oil-based drilling fluid prepared by the preparation method has strong inhibition, is close to oil-based drilling fluid, meets the environmental protection requirement, and has good temperature resistance, salt resistance and rheological property.
To achieve these objects and other advantages in accordance with the present invention, there is provided a method of making an oil-based drilling fluid, consisting essentially of mixing:
the oil-based drilling fluid comprises a polyamine inhibitor, cationic polyacrylamide, low-viscosity polyanionic cellulose, xanthan gum, a lubricant and a proper amount of water, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the volume fraction of the polyamine inhibitor is 2-4%, and the mass concentration of the cationic polyacrylamide is 5-10 kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 5-15 kg/m3The mass concentration of the xanthan gum is 1-5 kg/m3And the volume fraction of the lubricant is 1-3%.
Preferably, the method for preparing the polyamine inhibitor comprises:
adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adjusting the pH value of a system in the reaction kettle to 11-11.5, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, stirring and adding behenyl trimethyl ammonium chloride, and adjusting the pH value of the system in the reaction kettle to 9.5-10.5 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol to the behenyl trimethyl ammonium chloride is 10:4:4: 1.
Preferably, the molecular weight of the cationic polyacrylamide is 300 to 500 ten thousand daltons.
Preferably, the lubricant is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate, triethanolamine, perfluoropolyether and polymeric alcohol according to the mass ratio of 20:2:1:10:1:10 at 50 ℃.
Preferably, the method comprises the following steps:
step one, adding water;
step two, adding xanthan gum at the speed of 10-15 kg/min, and uniformly stirring;
step three, adding a polyamine inhibitor at the speed of 150-200 kg/min, and uniformly stirring;
step four, adding cationic polyacrylamide at the speed of 20-25 kg/min, and uniformly stirring;
step five, adding the low-viscosity polyanionic cellulose at the speed of 40-60 kg/min, and uniformly stirring;
and step six, adding the lubricant and uniformly stirring.
Provides the oil-based drilling fluid prepared by the preparation method.
The invention at least comprises the following beneficial effects:
firstly, the oil-based drilling fluid has strong inhibitive performance close to that of oil-based drilling fluid, meets the environmental protection requirement, and has excellent salt resistance and inhibitive performance.
Secondly, the polyamine inhibitor has stronger inhibition performance and can effectively prevent hydration and dispersion of clay particles.
Thirdly, the lubricant of the invention has excellent lubricity and anti-caking property, and compared with other similar products, the anti-balling effect between the clay drill cuttings and the drilling tool is more outstanding.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
< preparation of starting Material and preparation >
1. Preparation of polyamine inhibitors the present application: adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adding sodium hydroxide tablets to adjust the pH value of a system in the reaction kettle to be 11, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, stirring and adding behenyl trimethyl ammonium chloride, and adding citric acid particles to adjust the pH value of the system in the reaction kettle to be 10 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol to the behenyl trimethyl ammonium chloride is 10:4:4: 1.
Polyamine inhibitor comparative No. 1: adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adding sodium hydroxide tablets to adjust the pH value of a system in the reaction kettle to be 11, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, and adding citric acid particles to adjust the pH value of the system in the reaction kettle to be 10 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol is 10:4: 4.
Polyamine inhibitor comparison No. 2: adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adding sodium hydroxide tablets to adjust the pH value of a system in the reaction kettle to be 11, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, stirring and adding behenyl trimethyl ammonium chloride, and adding citric acid particles to adjust the pH value of the system in the reaction kettle to be 10 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol to the behenyl trimethyl ammonium chloride is 10:4:4: 3.
Polyamine inhibitor control No. 3: adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adding sodium hydroxide tablets to adjust the pH value of a system in the reaction kettle to be 11, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, stirring and adding behenyl trimethyl ammonium chloride, and adding citric acid particles to adjust the pH value of the system in the reaction kettle to be 10 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol to the behenyl trimethyl ammonium chloride is 10:4: 4.
2. The present application prepares the lubricant: the oil-based fuel oil is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate, triethanolamine, perfluoropolyether and polymeric alcohol at a mass ratio of 20:2:1:10:1:10 at 50 ℃.
Lubricant comparison No. 1: the oil-based fuel oil is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate, triethanolamine and polymeric alcohol at a mass ratio of 20:2:1:10:10 at 50 ℃.
Lubricant comparison No. 2: the modified polyurethane adhesive is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate, perfluoropolyether and polymeric alcohol according to the mass ratio of 20:2:1:1:10 at 50 ℃.
Lubricant comparison No. 3: the oil-based flame retardant is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate and polymeric alcohol according to the mass ratio of 20:2:1:10 at 50 ℃.
< measurement of Properties of raw Material >
1. Performance testing of polyamine inhibitor:
drying and weighing mudstone blocks, soaking the mudstone blocks in an aging kettle in which polyamine inhibitors with different concentrations are soaked, rolling the mudstone blocks for 24 hours at 150 ℃, filtering the mudstone blocks by using a 200-mesh screen, drying filter residues and weighing the dried filter residues, wherein the results are shown in table 1:
TABLE 1 polyamine inhibitor Performance test results
And (3) analysis: as can be seen from table 1, the polyamine inhibitor of the present invention can more effectively prevent the hydration dispersion of clay particles and significantly improve the inhibition performance compared to the commercially available polyamine inhibitors. In consideration of the problem of material cost, the preferable formula is 3-4% of the use concentration.
The inhibition was comparable as seen by comparing the polyamine inhibitor control No. 1 (without behenyltrimethylammonium chloride) to the commercial polyamine inhibitor CFY-01.
When the content of the behenyl trimethyl ammonium chloride in the polyamine inhibitor is only 5.26%, the inhibiting effect can be obviously improved. The behenyl trimethyl ammonium chloride can obviously improve the inhibiting function of the polyamine inhibitor, or the behenyl trimethyl ammonium chloride and a certain component in the polyamine inhibitor have combined action, so that the inhibiting effect is improved.
From the results of the residual rates of the 6 groups of commercial polyamine inhibitor CFY-01 and the 7 groups of polyamine inhibitor CFY-01+ behenyltrimethylammonium chloride, it can be seen that behenyltrimethylammonium chloride does not significantly enhance the inhibitory effect of the commercial polyamine inhibitor, and therefore, it can be seen from the side that behenyltrimethylammonium chloride enhances the inhibitory effect, and is more likely to be generated by the synergistic effect with a certain component of the polyamine inhibitor of the present application. The behenyl trimethyl ammonium chloride has oleophobic and hydrophobic properties, and has the interaction effect between the amphoteric group and the reactants of polyether amine, glycol ethyl ether acetate and polyether polyol or incompletely reacted monomers in water. The polyamine inhibitor is attached to the surface of clay particles, has strong inhibiting effect on hydration dispersion of clay and water swelling of shale, and simultaneously reduces dynamic/static water loss of slurry.
Although the polyamine inhibitor of comparative No. 2 (containing about 14.28% of behenyltrimethylammonium chloride) and the polyamine inhibitor of comparative No. 3 (containing 21.74% of behenyltrimethylammonium chloride) showed good inhibition, the dosage of behenyltrimethylammonium chloride was excessive, and it was found that the dosage of behenyltrimethylammonium chloride was increased compared to the polyamine inhibitor of the present application (containing about 5.26% of behenyltrimethylammonium chloride), and the inhibition was not significantly increased. It is demonstrated that the amount of behenyl trimethyl ammonium chloride in the polyamine inhibitor formulations of the present application is also a critical factor and can significantly affect the inhibition.
2. And (3) performance detection of the lubricant:
and (3) lubricity test:
the results of adding lubricants of different concentrations to a saline soil-carrying slurry having a mass concentration of 5%, sufficiently stirring and mixing the slurry, and then measuring the rate of decrease in torque by using an NF-2 type adhesion coefficient measuring instrument are shown in Table 2:
TABLE 2 Lubricant Performance test results
As can be seen from the data in Table 2, the salt resistance and the lubricity of the lubricant are remarkably improved compared with those of the commercially available lubricant, the effect is optimal when the amount of the lubricant is 1-3%, and the torque reduction rate is not obviously increased any more when the amount of the lubricant exceeds 3%.
Compared with a lubricant contrast No. 1 (without perfluoropolyether) and a lubricant contrast No. 2 (without triethanolamine), the lubricant contrast No. 1 and the lubricant contrast No. 3 (without perfluoropolyether and triethanolamine) can know that perfluoropolyether is singly added or triethanolamine is singly added, the torque reduction rate of the lubricant is not obviously improved, compared with the lubricant contrast No. 3, the lubricant and the lubricant of the application can know that perfluoropolyether and triethanolamine are simultaneously added, the torque reduction rate of the lubricant is obviously improved, and the lubricating performance of the lubricant can be obviously improved by the perfluoropolyether and the triethanolamine in a certain proportion.
Adhesion test:
grinding 100g of mudstone drill cuttings into powder, mixing and stirring 100g of barite powder, 100g of well cementation cement and a lubricant uniformly according to specified addition amount to prepare 500ml of mortar, weighing a dry metal rod, putting the dry metal rod and the mortar into a slurry aging kettle, carrying out hot rolling for 24 hours at 120 ℃, taking out the metal rod, drying and weighing, and comparing the weight increase results of the metal rod, wherein the weight increase results are shown in a table 3:
TABLE 3 Lubricant adhesion test
As can be seen from table 3, the lubricant of the present application has excellent anti-stick properties. Commercially available lubricants do not have this property. As can be seen from the comparison of groups 3, 4, 5 with group 2 (lubricants herein), the two materials, triethanolamine and perfluoropolyether, play a significant role in blocking resistance.
Triethanolamine is used as a surfactant, has emulsification effect in a mixed solution, can fully emulsify the mixed solution, improves the lubricating property of the mixed solution, and also has a certain corrosion inhibition effect on the metal surface by triethanolamine oleate generated by the reaction of the triethanolamine and other components in a lubricant under the condition of a high-temperature catalyst, thereby protecting a downhole drilling tool.
The C-F bond on the molecular chain of the perfluoropolyether replaces partial CH bond in hydrocarbons, and strong covalent bonds of C-O and C-C exist, and the molecules are neutral, so that the lubricant has higher chemical inertness, oxidation resistance and corrosion resistance, the overall lubricity, thermal stability and oxidation resistance of the lubricant are enhanced, and in addition, the lubricant also has biological inertness and low surface energy due to the existence of C-F, so that the adhesion of clay and a drilling tool is greatly reduced.
Preparation of oil-based drilling fluid
< example 1>
The preparation method of the oil-based drilling fluid is mainly prepared by mixing the following components:
the polyamine inhibitor, the cationic polyacrylamide, the low-viscosity polyanionic cellulose, the xanthan gum, the lubricant and the water are uniformly mixed, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the polyamine inhibitor has a volume fraction of 2% and the cationic polyacrylamide has a mass concentration of 5kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 5kg/m3The mass concentration of the xanthan gum is 1kg/m3The volume fraction of the lubricant is 1%.
Wherein, the polyamine inhibitor and the lubricant are prepared by the method.
< example 2>
The preparation method of the oil-based drilling fluid is mainly prepared by mixing the following components:
the oil-based drilling fluid comprises a polyamine inhibitor, cationic polyacrylamide, low-viscosity polyanionic cellulose, xanthan gum, a lubricant and water, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the polyamine inhibitor has a volume fraction of 4% and the cationic polyacrylamide has a mass concentration of 10kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 15kg/m3The mass concentration of the xanthan gum is 5kg/m3The volume fraction of the lubricant was 3%.
Wherein, the polyamine inhibitor and the lubricant are prepared by the method.
< example 3>
The preparation method of the oil-based drilling fluid is mainly prepared by mixing the following components:
the oil-based drilling fluid comprises a polyamine inhibitor, cationic polyacrylamide, low-viscosity polyanionic cellulose, xanthan gum, a lubricant and water, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the polyamine inhibitor has a volume fraction of 3% and the cationic polyacrylamide has a mass concentration of 8kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 8kg/m3The mass concentration of the xanthan gum is 3kg/m3The volume fraction of the lubricant is 2%.
Wherein, the polyamine inhibitor and the lubricant are prepared by the method.
< example 4>
The oil-based drilling fluid was prepared in the same manner as in example 3, except that the polyamine inhibitor was CFY-01, which was manufactured by FIC, Council, petrochemical Co., Ltd., and the lubricant was ZD-2238, which is a lubricant for drilling fluids, which was manufactured by Zhongde chemical Co., Ltd.
< example 5>
The oil-based drilling fluid was prepared as in example 3, except that the mixing process included the following steps:
step one, adding water;
step two, adding xanthan gum at the speed of 12kg/min, and uniformly stirring;
step three, adding a polyamine inhibitor at the speed of 180kg/min, and uniformly stirring;
and step four, adding cationic polyacrylamide at the speed of 20kg/min, and uniformly stirring, wherein the molecular weight of the cationic polyacrylamide is 300-500 ten thousand daltons. (ii) a
Step five, adding the low-viscosity polyanionic cellulose at the speed of 50kg/min, and uniformly stirring;
and step six, adding the lubricant and uniformly stirring.
< oil-based drilling fluid Performance test >
1. Experiment of
Shale expansion experiment: after the shale sample is soaked for 16h (room temperature), a shale expansion rate tester is adopted to detect the expansion rate.
Rock debris recovery rate experiment: after the rock debris sample is soaked for 8 hours (room temperature), the rock debris is recovered, dried and weighed, and the loss rate of the rock debris is measured, wherein the results are shown in the following table:
TABLE 4 liquid expansion and debris loss for each group
Remarking: the main emulsifier and the wetting agent in the oil-based drilling fluid are all products produced by joint technology chemical industry, and the mass concentration of calcium chloride in a calcium chloride aqueous solution is 25%.
As can be seen from table 4: as can be seen from the rock debris loss rate comparison experiment and the shale expansion rate comparison experiment, the oil-based drilling fluid has strong inhibitive performance, is close to the oil-based drilling fluid (9 groups are the oil-based drilling fluid), and has good salt resistance and inhibitive performance while meeting the environmental protection requirement.
3. Investigating the influence of the mixing method on the drilling fluid preparation process
For the preparation process records of the drilling fluids of example 3 and example 5, when all the raw materials are mixed together by the method of example 3, the stirring time is long, the polyamine inhibitor is easy to form foam, other polymer materials are easy to form fish eyes, and the mixing is difficult to be uniform without stepwise addition. When the method of example 5 is used for mixing, after each addition, the mixture can be stirred uniformly and quickly, and it is found that foam is easily generated in the step of adding the polyamine inhibitor, and at this time, if the foam is too much, an antifoaming agent can be added for assistance to reduce the foam, and the time for uniform mixing as a whole is remarkably shortened as compared with example 3.
4. Toxicity test
The toxicity of the components of the oil-based drilling fluid-like system was tested individually and all results showed LC50The values are acceptable, all being greater than 140000 ppm. Wherein the polyamine inhibitor and the lubricant are both prepared by the method, the molecular weight of the cationic polyacrylamide is 300-500 ten thousand daltons, and the toxicity (LC) of aquatic organisms with a wide range of oil-based drilling fluid formula is listed in Table 550) And (3) test results:
TABLE 5 toxicity test results
As can be seen from table 5, the oil-based drilling fluids, polyamine inhibitors, lubricants of the present application are all environmentally friendly.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (6)
1. The preparation method of the oil-based drilling fluid is characterized by mainly mixing the following components:
the oil-based drilling fluid comprises a polyamine inhibitor, cationic polyacrylamide, low-viscosity polyanionic cellulose, xanthan gum, a lubricant and a proper amount of water, wherein the final concentrations of the components in the oil-based drilling fluid are as follows: the volume fraction of the polyamine inhibitor is 2-4%, and the mass concentration of the cationic polyacrylamide is 5-10 kg/m3The mass concentration of the low-viscosity polyanionic cellulose is 5-15 kg/m3The mass concentration of the xanthan gum is 1-5 kg/m3And the volume fraction of the lubricant is 1-3%.
2. The method of making the oil-based drilling fluid of claim 1, wherein the method of making the polyamine inhibitor comprises:
adding polyether amine into a reaction kettle, stirring and adding ethylene glycol ethyl ether acetate and polyether polyol, then adjusting the pH value of a system in the reaction kettle to 11-11.5, controlling the temperature of the reaction kettle to be 90 ℃, reacting for 5 hours, stirring and adding behenyl trimethyl ammonium chloride, and adjusting the pH value of the system in the reaction kettle to 9.5-10.5 to obtain the polyamine inhibitor, wherein the mass ratio of the polyether amine to the ethylene glycol ethyl ether acetate to the polyether polyol to the behenyl trimethyl ammonium chloride is 10:4:4: 1.
3. The method of preparing an oil-based drilling fluid according to claim 1, wherein the cationic polyacrylamide has a molecular weight of 300 to 500 ten thousand daltons.
4. The preparation method of the oil-based drilling fluid as claimed in claim 1, wherein the lubricant is prepared by mixing and reacting white oil, sorbitan monooleate, sodium dodecyl benzene sulfonate, triethanolamine, perfluoropolyether and polymeric alcohol in a mass ratio of 20:2:1:10:1:10 at 50 ℃.
5. The method for preparing the oil-based drilling fluid according to any one of claims 1 to 4, comprising the steps of:
step one, adding water;
step two, adding xanthan gum at the speed of 10-15 kg/min, and uniformly stirring;
step three, adding a polyamine inhibitor at the speed of 150-200 kg/min, and uniformly stirring;
step four, adding cationic polyacrylamide at the speed of 20-25 kg/min, and uniformly stirring;
step five, adding the low-viscosity polyanionic cellulose at the speed of 40-60 kg/min, and uniformly stirring;
and step six, adding the lubricant and uniformly stirring.
6. An oil-based drilling fluid prepared by the preparation method of any one of claims 1 to 5.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993021930A1 (en) * | 1992-04-28 | 1993-11-11 | Estee Lauder, Inc. | Method of preparing a multiphase composition |
| CN103146364A (en) * | 2013-02-28 | 2013-06-12 | 中国海洋石油总公司 | Strong-inhibition water-base drilling fluid |
| CN103509533A (en) * | 2012-06-29 | 2014-01-15 | 中国石油化工股份有限公司 | Shale inhibitor for well drilling and preparation method thereof |
| CN104087271A (en) * | 2014-07-21 | 2014-10-08 | 四川仁智油田技术服务股份有限公司 | Compound polyamine shale inhibitor for drilling fluid and preparation method thereof |
| CN104650832A (en) * | 2013-11-21 | 2015-05-27 | 中国石油大学(华东) | Strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid |
| US20150197682A1 (en) * | 2014-01-16 | 2015-07-16 | Clearwater International, Llc | Anti-gel agent for polyhydroxyetheramines, gel stabilized polyhydroxyetheramine solutions, and methods for making and using same |
| CN105524602A (en) * | 2015-12-29 | 2016-04-27 | 武汉华矿胶体化学有限公司 | High-performance organic rectorite used for oil-based drilling fluids and a producing method thereof |
| US20170327723A1 (en) * | 2016-05-11 | 2017-11-16 | M-I L.L.C. | Wellbore fluids for increased wellbore stability and reduced torque |
| CN108003853A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of strong rejection capability cationic polymer drilling fluid |
| CN108018030A (en) * | 2016-10-28 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of high-property water-based polymer drilling fluid system |
| CN108018029A (en) * | 2016-10-28 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of high inhibition caving-preventing drilling fluid |
| CN109575890A (en) * | 2019-01-30 | 2019-04-05 | 北京大德广源石油技术服务有限公司 | Class oil base drilling fluid |
| WO2020256863A1 (en) * | 2019-06-19 | 2020-12-24 | Huntsman Petrochemical Llc | Synergistic performance of amine blends in shale control |
-
2021
- 2021-07-02 CN CN202110752973.0A patent/CN113372888B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993021930A1 (en) * | 1992-04-28 | 1993-11-11 | Estee Lauder, Inc. | Method of preparing a multiphase composition |
| CN103509533A (en) * | 2012-06-29 | 2014-01-15 | 中国石油化工股份有限公司 | Shale inhibitor for well drilling and preparation method thereof |
| CN103146364A (en) * | 2013-02-28 | 2013-06-12 | 中国海洋石油总公司 | Strong-inhibition water-base drilling fluid |
| CN104650832A (en) * | 2013-11-21 | 2015-05-27 | 中国石油大学(华东) | Strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid |
| US20150197682A1 (en) * | 2014-01-16 | 2015-07-16 | Clearwater International, Llc | Anti-gel agent for polyhydroxyetheramines, gel stabilized polyhydroxyetheramine solutions, and methods for making and using same |
| CN104087271A (en) * | 2014-07-21 | 2014-10-08 | 四川仁智油田技术服务股份有限公司 | Compound polyamine shale inhibitor for drilling fluid and preparation method thereof |
| CN105524602A (en) * | 2015-12-29 | 2016-04-27 | 武汉华矿胶体化学有限公司 | High-performance organic rectorite used for oil-based drilling fluids and a producing method thereof |
| US20170327723A1 (en) * | 2016-05-11 | 2017-11-16 | M-I L.L.C. | Wellbore fluids for increased wellbore stability and reduced torque |
| CN108003853A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of strong rejection capability cationic polymer drilling fluid |
| CN108018030A (en) * | 2016-10-28 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of high-property water-based polymer drilling fluid system |
| CN108018029A (en) * | 2016-10-28 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of high inhibition caving-preventing drilling fluid |
| CN109575890A (en) * | 2019-01-30 | 2019-04-05 | 北京大德广源石油技术服务有限公司 | Class oil base drilling fluid |
| WO2020256863A1 (en) * | 2019-06-19 | 2020-12-24 | Huntsman Petrochemical Llc | Synergistic performance of amine blends in shale control |
Non-Patent Citations (1)
| Title |
|---|
| FU, LP: "Preparation and inhibition mechanism of bis-quaternary ammonium salt as shale inhibitor used in shale hydrocarbon production", 《JOURNAL OF MOLECULAR LIQUIDS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114181678A (en) * | 2021-12-08 | 2022-03-15 | 广汉市福客科技有限公司 | Vegetable oil filter residue modified filtrate reducer and preparation method thereof |
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