EP0956322A1 - Corrosion inhibitor for wellbore applications - Google Patents
Corrosion inhibitor for wellbore applicationsInfo
- Publication number
- EP0956322A1 EP0956322A1 EP96934168A EP96934168A EP0956322A1 EP 0956322 A1 EP0956322 A1 EP 0956322A1 EP 96934168 A EP96934168 A EP 96934168A EP 96934168 A EP96934168 A EP 96934168A EP 0956322 A1 EP0956322 A1 EP 0956322A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydroxide
- process according
- compound
- comprised
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000003112 inhibitor Substances 0.000 title claims abstract description 144
- 238000005260 corrosion Methods 0.000 title claims description 131
- 230000007797 corrosion Effects 0.000 title claims description 131
- 239000006260 foam Substances 0.000 claims abstract description 69
- 150000001875 compounds Chemical class 0.000 claims abstract description 56
- 150000002989 phenols Chemical group 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000012530 fluid Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical group [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 31
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 102
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 68
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 62
- 239000000203 mixture Substances 0.000 claims description 60
- 238000000034 method Methods 0.000 claims description 54
- 239000007789 gas Substances 0.000 claims description 46
- 239000004088 foaming agent Substances 0.000 claims description 40
- 125000004432 carbon atom Chemical group C* 0.000 claims description 29
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 claims description 28
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- LHGVFZTZFXWLCP-UHFFFAOYSA-N guaiacol Chemical compound COC1=CC=CC=C1O LHGVFZTZFXWLCP-UHFFFAOYSA-N 0.000 claims description 20
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 claims description 20
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 19
- -1 hyroquinone Chemical compound 0.000 claims description 19
- 239000007791 liquid phase Substances 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000011734 sodium Substances 0.000 claims description 19
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 18
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 18
- 150000003839 salts Chemical class 0.000 claims description 18
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 claims description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 16
- 150000001298 alcohols Chemical class 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 16
- 229910052708 sodium Inorganic materials 0.000 claims description 16
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 15
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 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 description 14
- 238000005553 drilling Methods 0.000 claims description 12
- 239000012071 phase Substances 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- HFHFGHLXUCOHLN-UHFFFAOYSA-N 2-fluorophenol Chemical compound OC1=CC=CC=C1F HFHFGHLXUCOHLN-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 239000000908 ammonium hydroxide Substances 0.000 claims description 10
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims description 10
- VADKRMSMGWJZCF-UHFFFAOYSA-N 2-bromophenol Chemical compound OC1=CC=CC=C1Br VADKRMSMGWJZCF-UHFFFAOYSA-N 0.000 claims description 9
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 claims description 9
- KQDJTBPASNJQFQ-UHFFFAOYSA-N 2-iodophenol Chemical compound OC1=CC=CC=C1I KQDJTBPASNJQFQ-UHFFFAOYSA-N 0.000 claims description 9
- 150000007513 acids Chemical class 0.000 claims description 9
- 229910052783 alkali metal Inorganic materials 0.000 claims description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 9
- 239000007792 gaseous phase Substances 0.000 claims description 9
- 229960001867 guaiacol Drugs 0.000 claims description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 9
- QIRNGVVZBINFMX-UHFFFAOYSA-N 2-allylphenol Chemical compound OC1=CC=CC=C1CC=C QIRNGVVZBINFMX-UHFFFAOYSA-N 0.000 claims description 8
- AQTFKGDWFRRIHR-UHFFFAOYSA-L 3-[18-(2-carboxylatoethyl)-8,13-bis(ethenyl)-3,7,12,17-tetramethylporphyrin-21,24-diid-2-yl]propanoate;cobalt(2+);hydron Chemical compound [Co+2].[N-]1C(C=C2C(=C(C)C(C=C3C(=C(C)C(=C4)[N-]3)C=C)=N2)C=C)=C(C)C(CCC(O)=O)=C1C=C1C(CCC(O)=O)=C(C)C4=N1 AQTFKGDWFRRIHR-UHFFFAOYSA-L 0.000 claims description 8
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 8
- 125000003545 alkoxy group Chemical group 0.000 claims description 8
- 150000002576 ketones Chemical class 0.000 claims description 8
- 125000000896 monocarboxylic acid group Chemical group 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 150000003460 sulfonic acids Chemical class 0.000 claims description 8
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 claims description 7
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 229930003836 cresol Natural products 0.000 claims description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 159000000001 potassium salts Chemical class 0.000 claims description 6
- JPYHHZQJCSQRJY-UHFFFAOYSA-N Phloroglucinol Natural products CCC=CCC=CCC=CCC=CCCCCC(=O)C1=C(O)C=C(O)C=C1O JPYHHZQJCSQRJY-UHFFFAOYSA-N 0.000 claims description 5
- 125000001931 aliphatic group Chemical group 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical compound C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- XOOMNEFVDUTJPP-UHFFFAOYSA-N naphthalene-1,3-diol Chemical compound C1=CC=CC2=CC(O)=CC(O)=C21 XOOMNEFVDUTJPP-UHFFFAOYSA-N 0.000 claims description 5
- QCDYQQDYXPDABM-UHFFFAOYSA-N phloroglucinol Chemical compound OC1=CC(O)=CC(O)=C1 QCDYQQDYXPDABM-UHFFFAOYSA-N 0.000 claims description 5
- 229960001553 phloroglucinol Drugs 0.000 claims description 5
- 229940079877 pyrogallol Drugs 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 3
- 229960003237 betaine Drugs 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000004356 hydroxy functional group Chemical group O* 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims 7
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 claims 4
- SERARPRVBWDEBA-GXDHUFHOSA-N chembl1994738 Chemical compound OC1=CC=CC=C1\C=N\NC1=CC=CC=C1 SERARPRVBWDEBA-GXDHUFHOSA-N 0.000 claims 3
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims 2
- 239000000194 fatty acid Substances 0.000 claims 2
- 229930195729 fatty acid Natural products 0.000 claims 2
- 150000004665 fatty acids Chemical class 0.000 claims 2
- OBXSAUMTBVIHRA-UHFFFAOYSA-N 2-[methyl(prop-2-enoyl)amino]acetic acid Chemical compound OC(=O)CN(C)C(=O)C=C OBXSAUMTBVIHRA-UHFFFAOYSA-N 0.000 claims 1
- 239000012267 brine Substances 0.000 description 23
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 23
- 230000005764 inhibitory process Effects 0.000 description 20
- 239000007800 oxidant agent Substances 0.000 description 19
- 239000000126 substance Substances 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical class OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 230000001590 oxidative effect Effects 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 239000003350 kerosene Substances 0.000 description 7
- 239000004094 surface-active agent Substances 0.000 description 7
- 238000010998 test method Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
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- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
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- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000003760 tallow Substances 0.000 description 3
- ZCLXQTGLKVQKFD-UHFFFAOYSA-N 3-hydroxybenzenesulfonic acid Chemical compound OC1=CC=CC(S(O)(=O)=O)=C1 ZCLXQTGLKVQKFD-UHFFFAOYSA-N 0.000 description 2
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- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- 125000000400 lauroyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000647 material safety data sheet Toxicity 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 125000001419 myristoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000002811 oleoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 150000004707 phenolate Chemical class 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 description 1
- 229940031826 phenolate Drugs 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Polymers 0.000 description 1
- ZGJADVGJIVEEGF-UHFFFAOYSA-M potassium;phenoxide Chemical compound [K+].[O-]C1=CC=CC=C1 ZGJADVGJIVEEGF-UHFFFAOYSA-M 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000008257 shaving cream Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Definitions
- This invention relates to a corrosion inhibitor and the use thereof in wellbore
- Aerated liquids and foams are frequently employed as wellbore fluids during
- Aerated liquids are distinguishable from foams by
- Aerated liquids and foams are particularly useful when reduced hydrostatic pressure
- geological strata at underbalanced conditions i.e., wellbore pressure less than fluid pressure
- Aerated liquids are nominally comprised of a gas and a liquid and may
- additives such as corrosion inhibitors and suspended solids such as mud
- tubing for transporting the gas downhole to an injection point where it is combined with liquid
- a foam is physically composed of gas bubbles
- a surfactant-bearing aqueous film surrounded by a surfactant-bearing aqueous film and is nominally comprised of a gas, at least
- one surfactant which functions as a foaming agent, and water.
- foam quality is defined to be the volume percent of gas in the two-phase mixture.
- used in foams may be chemically pure, fresh, or contain varying degrees of salinity and/or
- the foam may additionally be comprised of other additives which alter the
- Such additives include selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite which are selected polymers and/or bentonite
- the rheological properties of foam are complex and provide a separate and
- foam also possesses at low linear flow velocities excellent carrying capacities
- downhole operations can be performed without removal of the wellbore tubing.
- Oxygen generally originates from air.
- Carbon dioxide and hydrogen sulfide are generally produced from the geological strata of
- oxygen-bearing gas/liquid mixture suitable for use in wellbore applications including drilling,
- Still a further object of this invention to develop a corrosion inhibited oxygen-
- a yet still further object is to develop a process employing foam suitable for use
- a corrosion-inhibited gas-liquid mixture nominally
- this invention concerns a unique formulation for a
- the inventive corrosion inhibitor is nominally comprised of at least one phenolic
- R b R 2 , R 3 , R 4 and R 5 are independently selected from the group consisting of
- Flavotannins are polyphenolic materials which are extracted from the bark
- Quebracho is an example of a suitable flavotannin.
- Suitable phenolic compounds are those selected from
- naphthols polyhydroxy naphthols, o-cresol, m-cresol, p-cresol, o-fluorophenol, m-
- bromophenol bromophenol, m-bromophenol, p-bromophenol, o-iodophenol, m-iodophenol, p-iodophenol,
- the phenolic compound is more preferably phenol, o-cresol, o-fluorophenol, o-
- chlorophenol o-bromophenol, o-iodophenol, o-nitrophenol, catechol, resorcinol, guaiacol,
- hydroquinone hydroquinone, salicylaldehyde, phloroglucinol, pyrogallol, 4,4-biphenol, 1,3-dihydroxy naphthalene or o-allylphenol or any of the salts of the preceding or mixtures thereof of the
- phenolate salts are those of sodium and
- phenolic compounds are phenol and the sodium and potassium salts thereof which are sodium
- the hydroxide-bearing compound must be a compound capable of imparting a
- hydroxide-bearing compounds are the alkali metal
- hydroxides ammonium hydroxide or mixtures thereof. More preferred are those selected
- hydroxide Of these, sodium hydroxide and potassium hydroxide are still more preferred.
- potassium hydroxide Most preferred is potassium hydroxide.
- a ratio of about 20 to about 350 is most preferred.
- hydroxide-bearing compounds consisting of ammonium hydroxide, potassium
- the corrosion inhibitor may additionally be comprised of water in an amount
- the water may be chemically pure
- the inventive corrosion inhibitor is distinguished from many other inhibitors,
- the corrosion inhibitor is effective at both ambient and elevated
- inventive inhibitor is also distinguishable from many commercially
- the corrosion inhibitor is particularly effective when the oxidizing agent is oxygen or
- the aerated liquid is nominally comprised of a gas which contains
- the corrosion inhibitor is particularly effective when the
- oxidizing agents are hydrogen sulfide, carbon dioxide, and oxygen or oxidation-related
- the water may be chemically pure, fresh, or contain appreciable salinitv and/or hardness and may contain dissolved gases, some of which may favor oxidation.
- aerated liquid may additionally be comprised of solids such as sand and dirt or a separate
- Aerated liquids are particularly useful when a reduction in the bulk density of the
- An aerated liquid is prepared by combining a gas containing at least one
- the water-based liquid and corrosion inhibitor are first combined to form a
- the gas is then added via contacting the liquid and gas phases.
- the latter contacting step is usually
- the corrosion inhibitor may also be used in well production wherein gas lift
- the corrosion inhibitor may be combined
- the reduced hydrostatic head allows the reservoir fluids, which may also be
- oxidizing agents such as hydrogen sulfide, carbon dioxide, or oxygen and oxidation-related
- compounds of these agents may be present in either the gas used for the gas lift or in the fluids
- the required concentration of corrosion inhibitor in the aerated fluid is that amount effective to insure corrosion inhibition over the time frame of interest at the
- inhibitors are about 0.1 to about 40 wt% and about 0.005 to about 4.0 wt%, respectively. More
- inhibited aerated liquid may be used in metal-bearing systems at both ambient and elevated
- oxidizing agent is oxygen or the oxidation-related compounds thereof.
- the inventive corrosion-inhibited foam is nominally comprised of a dispersed gas
- the water may be chemically pure, fresh, or contain appreciable salinity and/or hardness, and
- liquid phase may contain other additives which function to produce a
- Foam stabilizers are one such example.
- foam may additionally contain solids such as sand and dirt and/or a separate organic phase.
- volume percentage of the combined gaseous and liquid phase which is gas is defined
- the quality of the foam is preferably about 60 to about 99.75% and
- a stiffer foam may be prepared by adding guar gum or other organic polymers
- the gaseous phase may initially contain an oxidizing agent or the phase may be
- oxidizing agents such as oxygen, hydrogen sulfide or carbon dioxide or
- a gaseous phase comprised in major portion of air is preferred.
- inhibited foam may be used in metal-bearing systems at both ambient and elevated
- concentration will be dependent on water salinity and hardness, foaming agent,
- preferred foaming agents are those possessing a Ross-Miles initial foam height of at least 10
- height is the sum of foam heights at 0, 1, 2, 5 and 10 min obtained using the Ross-Miles
- Typical foaming agent concentrations based on active foaming agent concentration. are about 0.005 to about 4.0 wt% based upon the weight of water, corrosion inhibitor and
- foaming agent in the liquid phase More preferred foaming agent concentrations are about
- concentrations are about 0.1 to about 0.3 wt% also based on the liquid phase.
- Preferred foaming agents include one or more of the following:
- R is cocoyl, lauryl, or oleoyl and M is H or Na;
- R is cocoyl, palmitoyl, or tall oil
- R-O-SO 3 M where R is lauryl and M is an ammonium-containing or an alkali metal cation, more
- M is an ammonium-containing or alkali metal cation, more preferably NH 4 or
- R is linear C 12 . 14 , linear C 12 . 15 , lauryl, tridecyl, myristyl, or capryl-capryl;
- M is an ammonium-containing or alkali metal cation, more preferably Na or
- R is nonyl, octyl, or decyl
- R is selected from the group consisting of the linear and branch alkyl groups of C 6 , C 8 ,
- C ⁇ . n C, 0 , C, 0 . I2 , C, 2 , C, 2 . 14 , C 14 , C 12 .i 5 , C 16 , and C 18 isosteryl, lauryl, cetyl, stearyl, oleyl,
- R is cetyl, lauryl, myristyl, stearyl, coco, hydrogenated tallow, hexadecyl, tallow,
- CH 2 CH 2 OH and may be the same or different;
- R is coco, decyl, cetyl, lauryl, or oleyl
- amido propylbetaines More preferably amido propylbetaines possessing the formula of
- R is cocyl, lauroyl, isostearoyl, myristoyl, palmitoyl, and most preferably R is cocyl;
- the preferred foaming agent is comprised of one or more
- amidopropylbetaines and more preferably comprised of one or more amidopropylbetaines and
- R is an oleophilic group having from 10 to 18 carbon atoms and M is an alkali metal or ammonium cation.
- the most preferred foaming agent is comprised of cocoamidopropyl
- Foam is generally prepared using surface facilities wherein the gas which will
- this step is conducted by combining the gas and
- the confining means are those readily available to one skilled in the art and include
- the foam is generated in the wellbore
- the foam is generated at the surface by intimately mixing
- the wellbore fluid is produced via the non-injected tubular or
- Foam velocity is dependent upon the type of wellbore operation being performed and the designation of said operating conditions is readily within the capabilities of
- foamer i.e., foaming agent
- test solutions were prepared from 2% potassium
- chloride field brine a designated foaming agent, air, and one of two designated and
- test vessels were constructed of Hastelloy C
- each vessel contained two 2 1/2 inch x 1/2 inch carbon steel coupons.
- the coupons
- test vessels were then pressurized with air to a pressure of 3 psig. The test vessels were then
- test vessel was then cooled to ambient temperature, the pressure released,
- test coupons were retrieved and first cleaned using a corrosion-
- the coupons were further cleaned by contacting with a steel wool pad to
- the coupons were then weighed and based on the difference between initial and final coupon weights, the corrosion rate was calculated. The
- Inhibitor A Homco MC-21
- Inhibitor C Homco AC-105-C
- Test Series #1 The observed corrosion rate for Run #4 which contained the two corrosion
- Runs #5 and #6 the corrosion rates were respectively increased by at least 3 -fold and 7-fold.
- Runs #1 and #2 and for Run #6 presented in Table II for Control Test Series #2.
- Inhibitor E (Amtech B-1) was used demonstrated relatively low corrosion rates at the test
- the inhibitors may be obtained from the source identified in Table X.
- w ⁇ est liquid for each test was 135 ml of 2% KC1 brine and 15 ml kerosene to which was added the identified inhibitors and foamer. Total system volume was approximately 215 ml. c Severe pitting observed.
- ⁇ est liquid was 135 ml of 2% KC1 brine and 15 ml kerosene to which was added the identified inhibitors and foamer. Total system volume was approximately 215 ml.
- ⁇ est liquid was 135 ml of 2% KC1 field brine and 15 ml kerosene to which was added the identified inhibitors and foamer. Total system volume was approximately 215 ml. * Homco MC-1
- Control Test Series #5 provides comparative data regarding the applicability of
- Inhibitor D (Amtech MC-1), Inhibitor E (Amtech B-1) and Inhibitor F (Baker Cronox C-617)
- H d was 135 ml of 2% KC1 brine and 15 ml kerosene to which was added the identified and foamer. Total system volume was approximately 215 ml.
- ⁇ est liquid was 135 ml of 2% KC1 brine and 15 ml kerosene to which was added the identified inhibitors and foamer. Total system volume of approximately 215 ml. iT Severe pitting 'Some pitting
- the inventive inhibitor was effective at phenol to oxygen molar ratios in
- Hest liquid was 80 ml of 2% KC1 brine to which was added the above specified chemicals, inhibitors and * foamer. Total system volume was approximately 120 ml.
- test results confirm at a higher temperature the results presented in Test Series #1.
- bearing compound capable of imparting a pH of at least 9 to a base aqueous fluid, KOH, or
- Test Numbers 6-10 similarly concern corrosion inhibition in an air/brine system containing
- Fluids for Test Numbers 1-5 were prepared from 80 ml of 2% KCI brine to which KOH, phenol and foamer were added in the designated percentages.
- Fluids for Test Numbers 6-10 were prepared from 65 ml of 2% KCI brine and 15 ml of 60 wt% NH 4 OH to which phenol and foamer were added in the designated percentages. Total system volume was 120 ml.
- Test conditions were 350°F and 7.6 psig for 42.5 hrs. Overburden gas was air.
- Foamer was Homco SF-1009
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1996/016352 WO1998016592A1 (en) | 1995-06-02 | 1996-10-15 | Corrosion inhibitor for wellbore applications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0956322A1 true EP0956322A1 (en) | 1999-11-17 |
| EP0956322A4 EP0956322A4 (enrdf_load_stackoverflow) | 1999-12-15 |
Family
ID=22255944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96934168A Ceased EP0956322A1 (en) | 1996-10-15 | 1996-10-15 | Corrosion inhibitor for wellbore applications |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0956322A1 (enrdf_load_stackoverflow) |
| CA (1) | CA2266624A1 (enrdf_load_stackoverflow) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089789A (en) * | 1972-02-04 | 1978-05-16 | The Richardson Company | Corrosion inhibitors |
| US4376867A (en) * | 1981-07-07 | 1983-03-15 | Gert Jansen | Chemical process |
-
1996
- 1996-10-15 EP EP96934168A patent/EP0956322A1/en not_active Ceased
- 1996-10-15 CA CA002266624A patent/CA2266624A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0956322A4 (enrdf_load_stackoverflow) | 1999-12-15 |
| CA2266624A1 (en) | 1998-04-23 |
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