CN106987241B - A kind of low dosage Compositional type hydrate inhibitor for natural gas - Google Patents
A kind of low dosage Compositional type hydrate inhibitor for natural gas Download PDFInfo
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- CN106987241B CN106987241B CN201710226029.5A CN201710226029A CN106987241B CN 106987241 B CN106987241 B CN 106987241B CN 201710226029 A CN201710226029 A CN 201710226029A CN 106987241 B CN106987241 B CN 106987241B
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- inhibitor
- hydrate
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- gas
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- 239000003112 inhibitor Substances 0.000 title claims abstract description 63
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000003345 natural gas Substances 0.000 title claims abstract description 16
- 229930182470 glycoside Natural products 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- -1 alkyl glycosides Chemical class 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 28
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 16
- 235000002639 sodium chloride Nutrition 0.000 claims description 16
- 239000011780 sodium chloride Substances 0.000 claims description 14
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 claims description 7
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 claims description 2
- 239000004280 Sodium formate Substances 0.000 claims description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 2
- 229940044172 calcium formate Drugs 0.000 claims description 2
- 235000019255 calcium formate Nutrition 0.000 claims description 2
- 239000004281 calcium formate Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 235000019441 ethanol Nutrition 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- 229960002816 potassium chloride Drugs 0.000 claims description 2
- 229960002668 sodium chloride Drugs 0.000 claims description 2
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical group [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 2
- 235000019254 sodium formate Nutrition 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims 3
- MXRGSJAOLKBZLU-UHFFFAOYSA-N 3-ethenylazepan-2-one Chemical compound C=CC1CCCCNC1=O MXRGSJAOLKBZLU-UHFFFAOYSA-N 0.000 claims 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001110 calcium chloride Substances 0.000 claims 1
- 229910001628 calcium chloride Inorganic materials 0.000 claims 1
- 229960002713 calcium chloride Drugs 0.000 claims 1
- 235000011148 calcium chloride Nutrition 0.000 claims 1
- 229930182478 glucoside Natural products 0.000 claims 1
- 229920001519 homopolymer Polymers 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 125000003367 polycyclic group Chemical group 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 21
- 150000004677 hydrates Chemical class 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- 238000012360 testing method Methods 0.000 description 26
- 239000007864 aqueous solution Substances 0.000 description 19
- 239000000243 solution Substances 0.000 description 18
- 150000002338 glycosides Chemical class 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N Caprolactam Natural products O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013000 chemical inhibitor Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical class CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229940060038 chlorine Drugs 0.000 description 1
- 235000017168 chlorine Nutrition 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- AEDZKIACDBYJLQ-UHFFFAOYSA-N ethane-1,2-diol;hydrate Chemical compound O.OCCO AEDZKIACDBYJLQ-UHFFFAOYSA-N 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
- C09K2208/22—Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers
-
- 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
- C09K2208/32—Anticorrosion additives
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)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of low dosage Compositional type hydrate inhibitor for natural gas.When mainly solving prevention and control gas hydrates existing in the prior art, thermodynamic inhibitor dosage is big, storage and transportation operating cost is high and the problem of feature of environmental protection difference.The present invention inhibitor, include by weight percentage：The technical solution of 5~40% alkyl glycosides, 0~10% synergist, 48~95% solvents, 0~2% antifoaming agent preferably solves the above problem.The inhibitor of the present invention has the characteristics that adding amount is low, inhibits good gas hydrates performance, good economy performance, environmental protection, can be used for gas hydrates prevention and control field.
Description
Technical field
The present invention relates to a kind of low dosage Compositional type hydrate inhibitor for natural gas.
Background technology
Gas hydrates are the crystalline materials for the type ice-like that natural gas and water are formed under low temperature and condition of high voltage,
It is incendivity that appearance meets fire as ice, also referred to as " combustible ice ", " solid gas " or " gas ice ".Gas hydrates are in exploitation day
It is formed in the pipeline of right gas, line clogging can be caused, reduce the output quantity of natural gas, increase the pressure difference of pipeline, damage pipe fitting is set
It is standby, lead to serious pipeline accident, or even gas well is caused to stop production.Gas hydrates in pipeline are prevented in gas industry at present
The most effective and common method of embolism is injection chemical inhibitor, it can inhibit the formation of gas hydrates, can also
Dissolve established gas hydrates.Domestic each Gas Fields are mainly hydrated as chemical inhibitor come prevention and control using methanol at present
The formation of object, methanol is as traditional thermodynamics hydrate inhibitor, although can effectively inhibit the formation of hydrate, there is also
Methanol dosing is big, volatile, there is stronger toxicity, to environment and artificial at certain injury, and is mixed with the production of methanol
Sewage must be recycled, and storage and transportation and operating cost are higher.Methanol has no longer met that gas field is safe and environment-friendly, inexpensive opens
The needs of hair.The major research institution of Abroad in Recent Years, such as BASF BASF, British Petroleum BP, shell SHELL, Mobil Mobile
Equal companies develop in succession low dosage using high-molecular compound as the kinetic inhibitor of active component（KHI）, polymerization inhibitor
（AA）Deng, but while using at the scene still remain as polymer dynamics inhibitor cannot use under high supercooling degree, there are turbid
The problems such as point, synthesis cost is higher, and degradation rate is low；Although the polymerization inhibitor based on surfactant can bear higher supercooling
Degree, but there is also needs to be used in the oil-water coexistence pipeline of by-product condensate, of high cost, the low problem of degradation rate so that this
The land gas well that class inhibitor only compares mitigation in external a small amount of condition is applied.Also there is development correlative study in the country.
CN101629071B discloses a kind of efficient combined inhibitor for inhibiting gas hydrate to generate.The inhibitor
It is by three kinds of polyvinylpyrrolidone, polyetheramine and butyl glycol ether substances according to quality proportioning 1:1:1 formulated in combination forms.Suppression
Total mass concentration when preparation uses is 0.2-2%.Inhibitor is applied in oilfield drilling mining system, and usage amount is small, efficiently
The advantages of.
CN102504786B discloses a kind of sulfur-containing natural gas hydrate inhibitor, by weight 100% meter：Dynamics is hydrated
Object inhibitor 10-30%, surfactant 10-30%, antifoaming agent 2-5%, corrosion inhibiter 2-5% and organic solvent 50-70%, dynamics
Hydrate inhibitor is N- caprolactam and 2- acrylamido -2- methyl-prop of the weight average molecular weight in 5000-20000
N vinyl pyrrolidone, N- caprolactam of the bipolymer or weight average molecular weight of sulfonate in 6000-30000
With the terpolymer of 2- acrylamide-2-methylpro panesulfonic acid salt；The hydrate inhibitor is suitable for preventing high temperature, with high salt
Gas hydrate synthesis in sulfur-containing gas gathering system, prevents gas hydrate synthesis from blocking, and has to gathering line and ground installation
Anti-corrosion effect.
CN104293326A discloses a kind of petroleum drilling fluid hydrate inhibitor for natural gas, is mainly used for wellbore fluid
System.The hydrate inhibitor for natural gas of the invention is a kind of kinetic inhibitor, thermodynamic inhibitor, polyamine class and antifoaming agent
Mixture.The inhibitor is 5-35MPa using pressure, and temperature in use is at -10~30 DEG C.The inhibitor dosage is few, with relatively low dense
Degree is mixed into drilling fluid, reduces gas hydrates nucleation, the speed of growth, coalescence, and environmental pollution is small.
In addition to above-mentioned patent, also other functional materials are developed to as hydrate inhibitor, but are all existed and closed
At high molecular material it is of high cost, difficult to degrade the problems such as, a kind of adding amount of Patent exploitation of the present invention is low thus, inhibits natural gas
Be hydrated physical performance is good, good economy performance, degradable environmental protection hydrate inhibitor.
Invention content
The technical problem to be solved by the present invention is to when prevention and control gas hydrates existing in the prior art, thermodynamics presses down
Preparation dosage is big, storage and transportation operating cost is high and the problem of feature of environmental protection difference.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of low dosage Compositional type gas water
Compound inhibitors, it is characterised in that inhibitor includes by weight percentage：5~40% alkyl glycosides, 0~10% synergist,
48~95% solvents, 0~2% antifoaming agent.
In above-mentioned technical proposal, it is C that the alkyl glycosides, which is selected from alkyl number,4~C16Straight chain type or branch chain type alkyl sugar
At least one of glycosides.
In above-mentioned technical proposal, the synergist is selected from sodium formate, potassium formate, calcium formate, sodium chloride, potassium chloride, chlorine
Change calcium, polyetheramine, polyethylene oxide, polyethylene glycol, polypropylene glycol, polyacrylamide, polyvinylpyrrolidone, polyvinyl
It is one or more in caprolactam.
In above-mentioned technical proposal, the solvent is selected from water, methanol, ethyl alcohol, ethylene glycol, diethylene glycol, triethylene glycol, third
At least one of glycol, butanediol, butyl glycol ether, ethylene glycol monobutyl ether.
In above-mentioned technical proposal, the antifoaming agent can be selected from one kind in copolyether, polyether siloxane copolymer
Or it is a variety of.
The hydrate inhibitor of the present invention is dropped with high surface activity, ecological security and good biocompatibility, microorganism
The excellent alkyl glycosides of solution property is primary functional components, through efficient hydrate inhibitor made of compounding.Since alkyl glycosides is
Amphi-pathic compound with hydrophilic group and lipophilic group, hydrophilic group can form hydrogen bond with hydrone reduces the activity of water, lipophilic group
There is alkyl chain steric hindrance natural gas molecule can be hindered to enter in water cage, reduce the interaction between natural gas and water, from
And achieve the purpose that inhibit gas hydrate synthesis.Using inhibitor of the present invention when, can be added in inhibitor solution synergist into
One step promotes the performance of inhibitor.Since alkyl glycosides can form protective film in inner wall of the pipe, inhibition may also function as to pipeline
Agent function further improves the economy of inhibitor.Therefore, inhibitor of the present invention is low with adding amount, inhibits gas water
The features such as closing good physical performance, good economy performance, environmental protection, can be used for gas hydrates prevention and control field.
Specific implementation mode
Below by embodiment, the present invention is further elaborated, and embodiments of the present invention are not limited thereto.
The performance test of the hydrate inhibitor for natural gas of the present invention is carried out in the reaction under high pressure pa kettle being independently transformed,
Pa kettle volume 1L, maximum pressure 10MPa, cycle deep cooling bath can make the operating temperature range of pa kettle at -30~25 DEG C, by suppression to be measured
Formulation samples and salt-containing solution（Simulated formation water）It is fitted into pa kettle after mixing in proportion, being filled with natural gas makes system pressure arrive
Designated value, the time that record pressure is begun to decline under stirring is as the time for judging that hydrate occurs.Test condition：It is real
Test -3 DEG C of pressure 6.5MPa, experimental temperature（18 DEG C of degree of supercooling）, 300 revs/min of speed of agitator, natural gas composition be shown in Table 1.
1 natural gas of table forms
| Component | CH4 | C2H6 | C3H8 | C4H10 | C5H12 | He | N2 | CO2 | H2S |
| Content % | 94.50 | 0.47 | 0.06 | 0.01 | 0.01 | 0.03 | 0.21 | 4.70 | 0.01 |
【Embodiment 1】
By weight percentage, 30% C12Alkyl glycosides, 10% potassium formate, 59% ethylene glycol monobutyl ether aqueous solution（Concentration
50%）, 1% polyether antifoam agent is configured to hydrate inhibitor A, adds it in 3.5% NaCl aqueous solutions, inhibitor is made to exist
Mass percent concentration in solution is 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle,
Test result is shown in Table 2.
【Embodiment 2】
By weight percentage, 30% C8Alkyl glycosides, 10% potassium formate, 59% ethylene glycol monobutyl ether aqueous solution（Concentration
50%）, 1% polyether antifoam agent is configured to hydrate inhibitor B, adds it in 3.5% NaCl aqueous solutions, inhibitor is made to exist
Mass percent concentration in solution is 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle,
Test result is shown in Table 2.
【Embodiment 3】
By weight percentage, 30% C12Alkyl glycosides, 10% polyetheramine, 59% ethylene glycol monobutyl ether aqueous solution（Concentration
50%）, 1% polyether antifoam agent is configured to hydrate inhibitor C, adds it in 3.5% NaCl aqueous solutions, inhibitor is made to exist
Mass percent concentration in solution is 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle,
Test result is shown in Table 2.
【Embodiment 4】
By weight percentage, 30% C12Alkyl glycosides, 10% polyethylene glycol, 59% ethylene glycol monobutyl ether aqueous solution（Concentration
50%）, 1% polyether antifoam agent is configured to hydrate inhibitor D, adds it in 3.5% NaCl aqueous solutions, inhibitor is made to exist
Mass percent concentration in solution is 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle,
Test result is shown in Table 2.
【Embodiment 5】
By weight percentage, 30% C12Alkyl glycosides, 10% polyvinylpyrrolidone, 59% ethylene glycol monobutyl ether are water-soluble
Liquid（Concentration 50%）, 1% polyether antifoam agent is configured to hydrate inhibitor E, adds it in 3.5% NaCl aqueous solutions, make
The mass percent concentration of inhibitor in the solution is 1%.Sample to be tested is added to progress hydrate inhibition in high pressure pa kettle
It can test, test result is shown in Table 2.
【Embodiment 6】
By weight percentage, 35% C12Alkyl glycosides, 64% ethylene glycol monobutyl ether aqueous solution（Concentration 50%）, 1% polyethers disappears
Infusion is configured to hydrate inhibitor F, adds it in 3.5% NaCl aqueous solutions, makes the quality hundred of inhibitor in the solution
It is 1% to divide specific concentration.Sample to be tested is added to progress hydrate rejection test, test result in high pressure pa kettle and is shown in Table 2.
【Embodiment 7】
By weight percentage, 30% C12Alkyl glycosides, 10% potassium formate, 59% methanol aqueous solution（Concentration 50%）, 1% is poly-
Ether silicone antifoam agent is configured to hydrate inhibitor G, adds it in 3.5% NaCl aqueous solutions, makes inhibitor in solution
In mass percent concentration be 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle, test
It the results are shown in Table 2.
【Embodiment 8】
By weight percentage, 35% C12Alkyl glycosides, 64% glycol water（Concentration 50%）, 1% polyether antifoam agent matches
Hydrate inhibitor H is made, adds it in 3.5% NaCl aqueous solutions, keeps the mass percent of inhibitor in the solution dense
Degree is 1%.Sample to be tested is added to progress hydrate rejection test, test result in high pressure pa kettle and is shown in Table 2.
【Embodiment 9】
By weight percentage, 15% C8Alkyl glycosides, 15% C12Alkyl glycosides, 10% potassium formate, 59.8% ethylene glycol water
Solution（Concentration 50%）, 0.2% polyether silicone antifoaming agent is configured to hydrate inhibitor I, adds it to 3.5% NaCl water
In solution, it is 1% to make the mass percent concentration of inhibitor in the solution.Sample to be tested is added in high pressure pa kettle and carries out water
The test of object rejection is closed, test result is shown in Table 2.
【Embodiment 10】
By weight percentage, 10% C4Alkyl glycosides, 20% C10Alkyl glycosides, 10% potassium formate, 59% ethylene glycol only son
Ether aqueous solution（Concentration 50%）, 1% polyether antifoam agent is configured to hydrate inhibitor J, adds it to 3.5% NaCl aqueous solutions
In, it is 1% to make the mass percent concentration of inhibitor in the solution.Sample to be tested is added in high pressure pa kettle and carries out hydrate
Rejection is tested, and test result is shown in Table 2.
【Comparative example 1】
3.5% NaCl aqueous solutions are directly added to progress hydrate rejection survey in high pressure pa kettle by without inhibitor
Examination, test result are shown in Table 2.
【Comparative example 2】
Thermodynamic inhibitor methanol is added in 3.5% NaCl aqueous solutions, the mass percent of methanol in the solution is made
A concentration of 15%.Sample to be tested is added to progress hydrate rejection test, test result in high pressure pa kettle and is shown in Table 2.
【Comparative example 3】
Polyvinylpyrrolidone is added in 3.5% NaCl aqueous solutions, makes polyvinylpyrrolidone in the solution
Mass percent concentration be 1%.Sample to be tested is added to progress hydrate rejection test in high pressure pa kettle, test knot
Fruit is shown in Table 2.
2 inhibitor the performance test results of table
| Detect sample | Pressure/MPa | Temperature/DEG C | Degree of supercooling/DEG C | Hydrate time of occurrence/min |
| A | 6.5 | -3 | 18 | 183 |
| B | 6.5 | -3 | 18 | 170 |
| C | 6.5 | -3 | 18 | 190 |
| D | 6.5 | -3 | 18 | 172 |
| E | 6.5 | -3 | 18 | 208 |
| F | 6.5 | -3 | 18 | 165 |
| G | 6.5 | -3 | 18 | 173 |
| H | 6.5 | -3 | 18 | 178 |
| I | 6.5 | -3 | 18 | 181 |
| J | 6.5 | -3 | 18 | 169 |
| Comparative example 1 | 6.5 | -3 | 18 | 5 |
| Comparative example 2 | 6.5 | -3 | 18 | 20 |
| Comparative example 3 | 6.5 | -3 | 18 | 45 |
Claims (1)
1. a kind of low dosage Compositional type hydrate inhibitor for natural gas, it is characterised in that inhibitor includes by weight percentage：5
~40% alkyl glycosides, 0~10% synergist, 48~95% solvents, 0~2% antifoaming agent；
The alkyl glycosides dosage is 30~40%, is C selected from alkyl number4~C16Straight chain type or branch chain type alkyl glucosides in
At least one；
The synergist is selected from sodium formate, potassium formate, calcium formate, sodium chloride, potassium chloride, calcium chloride, polyetheramine, polycyclic oxygen second
One kind or more in alkane, polyethylene glycol, polypropylene glycol, polyacrylamide, polyvinylpyrrolidone, Vinylcaprolactam homopolymer
Kind；
The solvent is for water and selected from ethyl alcohol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, butanediol, ethylene glycol fourth
The mixture of at least one of ether, ethylene glycol monobutyl ether；
The antifoaming agent is one or more in copolyether, polyether siloxane copolymer.
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| CN107795848B (en) * | 2017-09-30 | 2019-06-11 | 天津大学 | A kind of Compositional type hydrate inhibitor for natural gas of the amphipathic copolymer containing POSS and preparation method thereof |
| CN113817443B (en) * | 2020-06-18 | 2022-08-30 | 中国石油化工股份有限公司 | Hydrate decomposition inhibiting composition, coupling enhanced solid hydrate and method for enhancing storage and transportation stability of solid hydrate |
| CN114058344A (en) * | 2020-08-10 | 2022-02-18 | 中国石油天然气股份有限公司 | Multi-effect additive for natural gas exploitation and preparation method and application thereof |
| CN111996051A (en) * | 2020-09-14 | 2020-11-27 | 扬州大学 | Hydrating agent for preparing natural gas hydrate |
| CN112592704B (en) * | 2020-12-30 | 2022-09-20 | 天津新翔油气技术有限公司 | High-temperature-resistant hydrate inhibitor and preparation method thereof |
| US20230272264A1 (en) * | 2021-12-28 | 2023-08-31 | Dalian University Of Technology | Environmentally friendly natural gas hydrate inhibitor and application |
| CN114539994B (en) * | 2022-04-24 | 2022-07-15 | 山东维斯特尔石油科技有限公司 | Reservoir drilling fluid system and preparation method thereof |
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| CN103865505B (en) * | 2014-03-03 | 2016-12-07 | 中国石油大学(北京) | Non-ionic composite Anti-agglomerates of Gas Hydrate |
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