CN116410706A - Powdery biomass shale inhibitor and preparation method thereof - Google Patents
Powdery biomass shale inhibitor and preparation method thereof Download PDFInfo
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- CN116410706A CN116410706A CN202111661358.5A CN202111661358A CN116410706A CN 116410706 A CN116410706 A CN 116410706A CN 202111661358 A CN202111661358 A CN 202111661358A CN 116410706 A CN116410706 A CN 116410706A
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- 239000003112 inhibitor Substances 0.000 title claims abstract description 64
- 239000002028 Biomass Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 238000005553 drilling Methods 0.000 claims abstract description 26
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 24
- 239000011734 sodium Substances 0.000 claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 23
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 150000001350 alkyl halides Chemical class 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 230000035484 reaction time Effects 0.000 claims description 6
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004021 humic acid Substances 0.000 claims description 3
- HLVFKOKELQSXIQ-UHFFFAOYSA-N 1-bromo-2-methylpropane Chemical compound CC(C)CBr HLVFKOKELQSXIQ-UHFFFAOYSA-N 0.000 claims description 2
- MNDIARAMWBIKFW-UHFFFAOYSA-N 1-bromohexane Chemical compound CCCCCCBr MNDIARAMWBIKFW-UHFFFAOYSA-N 0.000 claims description 2
- VFWCMGCRMGJXDK-UHFFFAOYSA-N 1-chlorobutane Chemical compound CCCCCl VFWCMGCRMGJXDK-UHFFFAOYSA-N 0.000 claims description 2
- MJMQIMYDFATMEH-UHFFFAOYSA-N 2-chloro-2,4,4-trimethylpentane Chemical compound CC(C)(C)CC(C)(C)Cl MJMQIMYDFATMEH-UHFFFAOYSA-N 0.000 claims description 2
- MPPPKRYCTPRNTB-UHFFFAOYSA-N 1-bromobutane Chemical compound CCCCBr MPPPKRYCTPRNTB-UHFFFAOYSA-N 0.000 claims 1
- VMKOFRJSULQZRM-UHFFFAOYSA-N 1-bromooctane Chemical compound CCCCCCCCBr VMKOFRJSULQZRM-UHFFFAOYSA-N 0.000 claims 1
- MLRVZFYXUZQSRU-UHFFFAOYSA-N 1-chlorohexane Chemical compound CCCCCCCl MLRVZFYXUZQSRU-UHFFFAOYSA-N 0.000 claims 1
- CNDHHGUSRIZDSL-UHFFFAOYSA-N 1-chlorooctane Chemical compound CCCCCCCCCl CNDHHGUSRIZDSL-UHFFFAOYSA-N 0.000 claims 1
- NZWIYPLSXWYKLH-UHFFFAOYSA-N 3-(bromomethyl)heptane Chemical compound CCCCC(CC)CBr NZWIYPLSXWYKLH-UHFFFAOYSA-N 0.000 claims 1
- QTBFPMKWQKYFLR-UHFFFAOYSA-N isobutyl chloride Chemical compound CC(C)CCl QTBFPMKWQKYFLR-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 230000005587 bubbling Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000000440 bentonite Substances 0.000 description 5
- 229910000278 bentonite Inorganic materials 0.000 description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IZUOFDKRBUHNPE-UHFFFAOYSA-N 2-methylpropane hydrochloride Chemical compound CC(C)C.Cl IZUOFDKRBUHNPE-UHFFFAOYSA-N 0.000 description 2
- QBNJPSHRAWSBDW-UHFFFAOYSA-N 2-methylpropane;hydrobromide Chemical compound Br.CC(C)C QBNJPSHRAWSBDW-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- BWUHFJZNEUYVKM-UHFFFAOYSA-N CC(C)CC(C)(C)C.Br Chemical compound CC(C)CC(C)(C)C.Br BWUHFJZNEUYVKM-UHFFFAOYSA-N 0.000 description 2
- VZMQPBMPUPSQDJ-UHFFFAOYSA-N CC(C)CC(C)(C)C.Cl Chemical compound CC(C)CC(C)(C)C.Cl VZMQPBMPUPSQDJ-UHFFFAOYSA-N 0.000 description 2
- VFEVXBKBGMAKME-UHFFFAOYSA-N butane;hydrobromide Chemical compound Br.CCCC VFEVXBKBGMAKME-UHFFFAOYSA-N 0.000 description 2
- IODDQGMEFSNLGV-UHFFFAOYSA-N butane;hydrochloride Chemical compound Cl.CCCC IODDQGMEFSNLGV-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- WTVNABTWDZCYCN-UHFFFAOYSA-N hexane;hydrobromide Chemical compound Br.CCCCCC WTVNABTWDZCYCN-UHFFFAOYSA-N 0.000 description 2
- HJLHTTJLVALHOP-UHFFFAOYSA-N hexane;hydron;chloride Chemical compound Cl.CCCCCC HJLHTTJLVALHOP-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- BDDIUTHMWNWMRJ-UHFFFAOYSA-N octane;hydrobromide Chemical compound Br.CCCCCCCC BDDIUTHMWNWMRJ-UHFFFAOYSA-N 0.000 description 2
- ZHVULPDNOFUIML-UHFFFAOYSA-N octane;hydrochloride Chemical compound Cl.CCCCCCCC ZHVULPDNOFUIML-UHFFFAOYSA-N 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- -1 sulfomethyl phenolic resin Chemical group 0.000 description 2
- 101000832669 Rattus norvegicus Probable alcohol sulfotransferase Proteins 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
-
- 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
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a preparation method of a powdery biomass shale inhibitor, which comprises the following steps: a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture; b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor. The powdery biomass shale inhibitor provided by the invention has good shale inhibition capability, does not thicken in the use process, and is particularly beneficial to flow pattern regulation and bubbling prevention in high-density drilling fluid; the preparation method of the powdery biomass shale inhibitor is simple and mild, and three wastes are not generated; the low-cost sodium humate is used as the raw material, so that the product is green and biodegradable, and meanwhile, the cost of the product is greatly reduced; compared with the liquid shale inhibitor, the powdery biomass shale inhibitor provided by the invention is more convenient to transport, package, use and the like, and particularly is more convenient to use, store and the like in a low-temperature work area.
Description
Technical Field
The invention relates to the technical field of drilling fluid, in particular to a powdery biomass shale inhibitor and a preparation method thereof.
Background
With the continuous exploitation of unconventional oil and gas resources, deep wells, ultra-deep wells, ocean wells and complex section wells, when shale formations are encountered in the drilling process, the hydration expansion and dispersion of the shale can cause a series of problems such as instability of the well wall, bit balling, borehole purification and the like, the drilling difficulty is increased, and higher requirements are put forward on a drilling fluid system, particularly shale inhibitors.
The shale inhibitors are mainly polymers, inorganic salts, asphalt, polyamine and the like, and have the defects of poor environmental protection, high cost, easy viscosity increase, flocculation, foaming and the like when the dosage is high.
Therefore, the development of the powdery biomass shale inhibitor which has low cost, strong environmental protection performance, convenient package and transportation and no negative effect on drilling fluid has important significance.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to provide a preparation method of the powdery biomass shale inhibitor, which is nontoxic, easy to biodegrade, good in compatibility with drilling fluid, free from foaming and high in inhibition rate.
The invention provides a preparation method of a powdery biomass shale inhibitor, which comprises the following steps:
a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture;
b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor.
Preferably, the molar ratio of N-methylimidazole to haloalkane in step a) is 1: (0.9-1.1).
Preferably, the stirring speed in the step A) is 200-300 r/min; the reaction temperature is 80-90 ℃; the reaction time is 20-24 h.
Preferably, the alkyl halide is one of n-butane bromide, isobutane bromide, n-hexane bromide, n-octane bromide, isooctane bromide, n-butane chloride, isobutane chloride, n-hexane chloride, n-octane chloride or isooctane chloride.
Preferably, in the step B), the mass ratio of the first mixture to the sodium humate is (20-30): 30-40.
Preferably, the drying temperature in step B) is 60 to 70 ℃.
Preferably, the temperature of the reaction in the step B) is 60-70 ℃; the reaction time is 3-4 h.
Preferably, the sodium humate is prepared from humic acid and sodium hydroxide.
The invention provides a powdery biomass shale inhibitor which is prepared by the preparation method according to any one of the technical schemes.
The invention provides a drilling fluid, which comprises the powdery biomass shale inhibitor prepared by the preparation method according to any one of the technical schemes or the powdery biomass shale inhibitor.
Compared with the prior art, the invention provides a preparation method of a powdery biomass shale inhibitor, which comprises the following steps: a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture; b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor. The powdery biomass shale inhibitor provided by the invention has good shale inhibition capability, does not thicken in the use process, and is particularly beneficial to flow pattern regulation and bubbling prevention in high-density drilling fluid; the preparation method of the powdery biomass shale inhibitor is simple and mild, and three wastes are not generated; the low-cost sodium humate is used as the raw material, so that the product is green and biodegradable, and meanwhile, the cost of the product is greatly reduced; compared with the liquid shale inhibitor, the powdery biomass shale inhibitor provided by the invention is more convenient to transport, package, use and the like, and particularly is more convenient to use, store and the like in a low-temperature work area.
Detailed Description
The invention provides a powdery biomass shale inhibitor and a preparation method thereof, and a person skilled in the art can properly improve the technological parameters by referring to the content of the invention. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and they are intended to be within the scope of the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that the invention can be practiced and practiced with modification and alteration and combination of the methods and applications herein without departing from the spirit and scope of the invention.
The invention provides a preparation method of a powdery biomass shale inhibitor, which comprises the following steps:
a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture;
b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor.
The preparation method of the powdery biomass shale inhibitor comprises the steps of firstly stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture.
The haloalkane is preferably one of n-butane bromide, isobutane bromide, n-hexane bromide, n-octane bromide, isooctane bromide, n-butane chloride, isobutane chloride, n-hexane chloride, n-octane chloride or isooctane chloride. The source of the haloalkane is not limited and may be known to those skilled in the art.
According to the invention, the molar ratio of N-methylimidazole to haloalkane is preferably 1: (0.9 to 1.1); more preferably 1:1.
The present invention is not limited to the specific reaction vessel, and may be a three-necked flask equipped with a condenser.
The reaction is carried out under the condition of stirring, and the stirring speed is preferably 200-300 r/min; more preferably 210 to 290r/min; most preferably 220 to 280r/min.
The reaction temperature is preferably 80-90 ℃; more preferably 82 to 88 ℃; the reaction time is preferably 20 to 24 hours; more preferably 21 to 23 hours.
The first mixture was mixed with sodium humate.
The sodium humate is preferably prepared from humic acid and sodium hydroxide. The present invention is not limited to a specific preparation process and may be well known to those skilled in the art.
According to the invention, the mass ratio of the first mixture to the sodium humate is preferably (20-30): 30-40; more preferably (21-29) to (31-38).
After mixing, reacting, wherein the temperature of the reaction is preferably 60-70 ℃; the reaction time is preferably 3 to 4 hours.
The method also comprises the steps of drying and crushing after the reaction; the drying temperature is preferably 60-70 ℃; more preferably 65 to 70 ℃.
The present invention is not limited to the specific operation of the pulverization, and may be well known to those skilled in the art.
The invention provides a powdery biomass shale inhibitor which is prepared by the preparation method according to any one of the technical schemes.
The powdery biomass shale inhibitor and the preparation method thereof provided by the invention have the relative inhibition rate of 98% -99.5% and the biotoxicity EC 50 More than 30000mg/L, biodegradable BOD 5 /COD Cr ＞0.25。
The invention provides a drilling fluid, which comprises the powdery biomass shale inhibitor prepared by the preparation method according to any one of the technical schemes or the powdery biomass shale inhibitor.
The addition amount of the powdery biomass shale inhibitor is preferably 2-4wt%.
The invention provides a preparation method of a powdery biomass shale inhibitor, which comprises the following steps: a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture; b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor. The powdery biomass shale inhibitor provided by the invention has good shale inhibition capability, does not thicken in the use process, and is particularly beneficial to flow pattern regulation and bubbling prevention in high-density drilling fluid; the preparation method of the powdery biomass shale inhibitor is simple and mild, and three wastes are not generated; the low-cost sodium humate is used as the raw material, so that the product is green and biodegradable, and meanwhile, the cost of the product is greatly reduced; compared with the liquid shale inhibitor, the powdery biomass shale inhibitor provided by the invention is more convenient to transport, package, use and the like, and particularly is more convenient to use, store and the like in a low-temperature work area.
In order to further illustrate the present invention, the following describes in detail a powdered biomass shale inhibitor and a preparation method thereof provided by the present invention in connection with examples.
The sodium humate was purchased from Yunnan double dragon brown humic acid Co. N-methylimidazole and haloalkanes were all purchased from Ara Ding Shiji Co.
The relative inhibition rate of the embodiment of the invention is measured according to the standard Q/SH0323-2009 technical requirement of shale inhibitor for drilling fluid. EC of embodiments of the invention 50 Value and BOD 5 /COD Cr The values were determined according to the standard Water soluble field chemistry environmental protection technology requirements (SY/T6787-2010).
Example 1
Adding 1 mol of N-methylimidazole and 1 mol of N-butane bromide into a three-neck flask with a condenser, and controlling the stirring speed to be 200r/min and reacting at 80 ℃ for 20 hours to obtain a mixture 1; adding 20 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 30 parts by mass of sodium humate, reacting at 60 ℃ for 3 hours, drying at 70 ℃ and crushing to obtain the powdery biomass shale inhibitor.
Example 2
Adding 1 mol of N-methylimidazole and 1 mol of bromoisobutane into a three-neck flask with a condenser, controlling the stirring speed to be 300r/min, and reacting at 90 ℃ for 24 hours to obtain a mixture 1; adding 30 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 40 parts by mass of sodium humate, reacting for 4 hours at 70 ℃, drying and crushing at 70 ℃ to obtain the powdery biomass shale inhibitor.
Example 3
Adding 1 mol of N-methylimidazole and 1 mol of bromohexane into a three-neck flask with a condenser, controlling the stirring speed to be 250r/min, and reacting at 85 ℃ for 22 hours to obtain a mixture 1; adding 25 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 35 parts by mass of sodium humate, reacting at 65 ℃ for 3.5 hours, drying at 70 ℃ and crushing to obtain the powdery biomass shale inhibitor.
Example 4
Adding 1 mol of N-methylimidazole and 1 mol of N-octane bromide into a three-neck flask with a condenser, controlling the stirring speed to be 280r/min, and reacting at 88 ℃ for 20 hours to obtain a mixture 1; adding 30 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 30 parts by mass of sodium humate, reacting for 4 hours at 70 ℃, drying and crushing at 70 ℃ to obtain the powdery biomass shale inhibitor.
Example 5
Adding 1 mol of N-methylimidazole and 1 mol of N-butyl chloride into a three-neck flask with a condenser, controlling the stirring speed to 300r/min, and reacting at 80 ℃ for 24 hours to obtain a mixture 1; adding 30 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 40 parts by mass of sodium humate, reacting at 65 ℃ for 3 hours, drying at 70 ℃ and crushing to obtain the powdery biomass shale inhibitor.
Example 6
Adding 1 mol of N-methylimidazole and 1 mol of chloro-N-hexane into a three-neck flask with a condenser, controlling the stirring speed to be 200r/min, and reacting at 90 ℃ for 21 hours to obtain a mixture 1; adding 25 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 34 parts by mass of sodium humate, reacting at 68 ℃ for 3.5h, drying at 70 ℃ and crushing to obtain the powdery biomass shale inhibitor.
Example 7
Adding 1 mol of N-methylimidazole and 1 mol of chloroisooctane into a three-neck flask with a condenser, controlling the stirring speed to 300r/min, and reacting at 80 ℃ for 24 hours to obtain a mixture 1; adding 30 parts by mass of the mixture 1 into another three-neck flask with a condenser, adding 32 parts by mass of sodium humate, reacting for 4 hours at 70 ℃, drying and crushing at 70 ℃ to obtain the powdery biomass shale inhibitor.
Relative inhibition rate and EC of powdery biomass shale inhibitor prepared in examples 1 to 7 of the invention 50 、BOD 5 /COD Cr The detection is carried out, and the detection results are shown in table 1.
Table 1 powdered biomass shale inhibitor performance testing
As is clear from Table 1, the relative inhibition ratios of the powdery biomass shale inhibitors prepared in examples 1 to 7 were 98.0% to 99.5%, indicating excellent inhibition ability; EC (EC) 50 92540-112510 mg/L BOD 5 /COD Cr 0.26 to 0.33, the inhibitor has the characteristics of no toxicity, easy biodegradability, excellent environmental protection performance and the like.
Pre-hydrating bentonite: 400mL of water is added into a stirring cup, 0.56g of anhydrous sodium carbonate and 16g of bentonite are added while stirring, the mixture is stirred at a high speed for 20min at 11000r/min, and the mixture is maintained for 24h in a sealing manner at room temperature, so as to obtain pre-hydrated bentonite slurry.
Based on the total volume of the pre-hydrated bentonite slurry: sequentially adding 4% of SMP-2 in mass-volume ratio, 4% of SMC in mass-volume ratio and 3% of FT-1 in mass-volume ratio into bentonite slurry, and stirring at a high speed for 5min; then adding 601 and 0.7% by mass volume of 0.2% by mass volumeThe LV-PAC ratio is stirred at a high speed for 10min; then adding 0.5% sodium hydroxide in mass-volume ratio, and stirring at high speed for 5min; finally, adding barite to adjust the density of the drilling fluid to 1.5g/cm 3 Stirring at high speed for 20min to obtain drilling fluid.
Examples 8 to 14
Drilling fluid is obtained according to the preparation method, and the powdery biomass shale inhibitors prepared in examples 1-7 are respectively added in examples 8-14 to evaluate the performance of the drilling fluid in the drilling fluid.
Comparative example 1
Unlike example 8, the powdered biomass shale inhibitor was replaced with sulfomethyl phenolic resin SMP-3.
Comparative example 2
Unlike example 12, the powdered biomass shale inhibitor was replaced with sulfomethyl phenolic resin SMP-3.
The drilling fluids prepared in examples 8 to 14 were charged into an aging kettle, placed in a roller furnace, rolled at 150℃for 16 hours, and then the properties of the drilling fluids were measured according to the method described above, and the performance measurement method was according to national standard GB/T16783.1-2014, section 1 of Petroleum and Natural gas industry drilling fluid field test: water-based drilling fluid, the test results are shown in Table 2, and Table 2 shows the performance test results of the drilling fluids prepared in the examples and comparative examples of the present invention.
Table 2 properties of drilling fluids formulated in examples 8 to 14
Wherein AV is apparent viscosity, PV is plastic viscosity, YP is dynamic shear force, Q 10s /Q 10min For initial final cut, FL is API fluid loss.
As shown in Table 2, the powdery biomass shale inhibitor prepared by the invention has certain viscosity reducing effect with the same ratio as SMP-3, but has little influence on shear force and fluid loss, and after the shale inhibitor is added, drilling fluid hardly foams, and even when the shale inhibitor is added, the foaming rate is less than 4 percent. Therefore, the powdery biomass shale inhibitor prepared by the invention has good compatibility with drilling fluid.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A method for preparing a powdered biomass shale inhibitor, comprising the steps of:
a) Stirring N-methylimidazole and haloalkane for reaction to obtain a first mixture;
b) And mixing the first mixture with sodium humate, reacting, drying and crushing to obtain the powdery biomass shale inhibitor.
2. The process according to claim 1, wherein the molar ratio of N-methylimidazole to haloalkane in step a) is 1: (0.9-1.1).
3. The method according to claim 1, wherein the stirring speed in step a) is 200 to 300r/min; the reaction temperature is 80-90 ℃; the reaction time is 20-24 h.
4. The method according to claim 1, wherein the haloalkane is one of bromo-n-butane, bromo-isobutane, bromo-n-hexane, bromo-n-octane, bromo-isooctane, chloro-n-butane, chloro-isobutane, chloro-n-hexane, chloro-n-octane, or chloro-isooctane.
5. The preparation method according to claim 1, wherein the mass ratio of the first mixture and sodium humate in the step B) is (20-30): 30-40.
6. The process according to claim 1, wherein the drying temperature in step B) is 60 to 70 ℃.
7. The process according to claim 1, wherein the temperature of the reaction in step B) is 60 to 70 ℃; the reaction time is 3-4 h.
8. The method according to claim 1, wherein the sodium humate is prepared from humic acid and sodium hydroxide.
9. A powdered biomass shale inhibitor, characterized in that it is obtainable by a process according to any one of claims 1 to 8.
10. A drilling fluid comprising the powdered biomass shale inhibitor produced by the production method of any one of claims 1 to 8 or the powdered biomass shale inhibitor of claim 9.
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