CN101124307A - Additive for reducing torque on a drill string - Google Patents
Additive for reducing torque on a drill string Download PDFInfo
- Publication number
- CN101124307A CN101124307A CNA2006800054062A CN200680005406A CN101124307A CN 101124307 A CN101124307 A CN 101124307A CN A2006800054062 A CNA2006800054062 A CN A2006800054062A CN 200680005406 A CN200680005406 A CN 200680005406A CN 101124307 A CN101124307 A CN 101124307A
- Authority
- CN
- China
- Prior art keywords
- fluid
- composition according
- solid particulate
- barite
- microns
- 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.)
- Granted
Links
- 239000000654 additive Substances 0.000 title description 9
- 230000000996 additive effect Effects 0.000 title description 8
- 239000012530 fluid Substances 0.000 claims abstract description 177
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 106
- 239000007787 solid Substances 0.000 claims abstract description 96
- 239000010428 baryte Substances 0.000 claims abstract description 84
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 84
- 239000002245 particle Substances 0.000 claims abstract description 65
- 229920000642 polymer Polymers 0.000 claims abstract description 46
- 238000005553 drilling Methods 0.000 claims abstract description 42
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 239000002270 dispersing agent Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 39
- 239000011343 solid material Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 25
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims abstract description 18
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 239000003921 oil Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 229910052742 iron Inorganic materials 0.000 claims description 18
- 230000001050 lubricating effect Effects 0.000 claims description 15
- 235000012204 lemonade/lime carbonate Nutrition 0.000 claims description 12
- 239000012188 paraffin wax Substances 0.000 claims description 8
- 239000002283 diesel fuel Substances 0.000 claims description 7
- -1 fatty acid carboxylate Chemical class 0.000 claims description 7
- 239000002480 mineral oil Substances 0.000 claims description 7
- 235000010446 mineral oil Nutrition 0.000 claims description 7
- 229920013639 polyalphaolefin Polymers 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 16
- 238000000227 grinding Methods 0.000 abstract description 14
- 239000011236 particulate material Substances 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 239000010459 dolomite Substances 0.000 abstract 1
- 229910000514 dolomite Inorganic materials 0.000 abstract 1
- 229910052595 hematite Inorganic materials 0.000 abstract 1
- 239000011019 hematite Substances 0.000 abstract 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 1
- 239000010450 olivine Substances 0.000 abstract 1
- 229910052609 olivine Inorganic materials 0.000 abstract 1
- 229910021646 siderite Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 43
- 239000000126 substance Substances 0.000 description 22
- 239000000314 lubricant Substances 0.000 description 17
- 238000002360 preparation method Methods 0.000 description 15
- 239000000499 gel Substances 0.000 description 12
- 239000002002 slurry Substances 0.000 description 12
- 230000032683 aging Effects 0.000 description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 11
- 238000005098 hot rolling Methods 0.000 description 11
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 238000010008 shearing Methods 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 9
- 239000002253 acid Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000013505 freshwater Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- QOFMIEYZHSTGCG-UHFFFAOYSA-N C(=C)S(=O)(=O)O.C(C=C)(=O)O.C(C(C)O)O Chemical compound C(=C)S(=O)(=O)O.C(C=C)(=O)O.C(C(C)O)O QOFMIEYZHSTGCG-UHFFFAOYSA-N 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- 150000008065 acid anhydrides Chemical class 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 229920001519 homopolymer Polymers 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 5
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 5
- WDHYRUBXLGOLKR-UHFFFAOYSA-N phosphoric acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OP(O)(O)=O WDHYRUBXLGOLKR-UHFFFAOYSA-N 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 230000016507 interphase Effects 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000000518 rheometry Methods 0.000 description 4
- OHBKNWDVVSUTRV-UHFFFAOYSA-N 1-(prop-2-enoylamino)propane-2-sulfonic acid Chemical compound OS(=O)(=O)C(C)CNC(=O)C=C OHBKNWDVVSUTRV-UHFFFAOYSA-N 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 238000001935 peptisation Methods 0.000 description 2
- FBKBIOOBMXQNBA-UHFFFAOYSA-N propane-2-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CC(C)S(O)(=O)=O FBKBIOOBMXQNBA-UHFFFAOYSA-N 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241001676573 Minium Species 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000037063 Thinness Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 239000010427 ball clay Substances 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- XZKRXPZXQLARHH-UHFFFAOYSA-N buta-1,3-dienylbenzene Chemical compound C=CC=CC1=CC=CC=C1 XZKRXPZXQLARHH-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 206010048828 underweight Diseases 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
-
- 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
-
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/102—Silicates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/14—Group 7
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/16—Groups 8, 9, or 10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
Abstract
A method of reducing the torque of a drill string used in drilling a subterranean well that includes injecting into the drilling fluid a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d5o) of less than ten microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.68 and preferably the solid particulate material may be selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other similar solids that should be apparent to one of skill in the art.
Description
Background technology
When probing oil well and gas well, pump into fluid preparation and by the ejection of the nozzle in the drill bit, drilling fluid upwards circulates by the drill string and the annular space between the rock stratum of rotation like this to the down-hole with multiple character (comprising oilness) by drill string.The function of these drilling fluids or " mud " is to cool off and lubricated drill bit and drill string, the smear metal in the drilling process is transported to surface, control and minimizing is lost to fluid in the rock stratum and support and protection and gets into the cave and in position cement (that is, creating stable hole) up to metal shell.
Mud lubrication (for realizing minimized moment of torsion and drag force) and mud toxicity (for the well such as the offshore drilling in environment sensitive district) are the main focus when selecting the drilling fluid prescription.Most of drilling fluid can be referred to two kinds of main classifications: water base or oil base.Present employed drilling fluid majority is water base, that is, they contain water as continuous foreign minister.Have performance advantage although comprise so-called synthetic basic fluidic oil base drilling fluid, its shortcoming is to be difficult to realize environmental protection in higher cost and the specific region in the world.
The oilness of drilling fluid is the important factor in the drilling well economy, and it is measured to moving-member such as drill string with the influence of frictional coefficient between the surface that this moving-member contacts by measuring drilling fluid.Frictional coefficient is low more, and oilness is big more.The oilness of drilling fluid has determined this fluid to reduce the ability of moment of torsion and drag force in drill-well operation.
Be full of the report that is used to reduce the lubricant of drill string moment of torsion about various in the prior art.For example, various types of hydro carbons, synthetic oil, ester class, lipid acid, natural oil, soap and other have added drilling fluid to help to reduce the compound of moment of torsion.Organically oil lubricant is usually added in the water yl drilling fluid to reduce frictional coefficient.Reduce frictional coefficient particularly important in well bore off plumb drill-well operation in the drilling process.Emulsifying agent or tensio-active agent are usually added in the drilling fluid keeping these water-fast oil lubricant components to be suspended in the water-based fluid as drop, and prevent that their from separating and merging.These lubricants may increase fluidic toxicity and irritation level.
Except fluid lubricant, the solid particulate of micro-meter scale or pearl also be introduced in the water yl drilling fluid to improve its oilness.Some representative example of such lubricant system are: (1) is wear-resistant and the thermally-stabilised and chemically inert Ceramic Balls of disruptive; (2) plastic bead, for example, those plastic beads of making by Vinylstyrene and cinnamic multipolymer; (3) with plastic packets by to promote moving and round-robin pearl shape magnetic-particle of these pearl compositions; (4) the soda-lime-silica glass pearl of chemically-resistant; (5) elastic graphite carbon granule; (6) contain Mierocrystalline cellulose, peat or the bagasse of the oil based fluids lubricant of absorption; (7) mixture of graphite, silicate and silicone material.Environmental problem when the general difficult point of above-mentioned solid lubricant is to use water yl drilling fluid and drilling fluid are to the load of solid material.In addition, should recognize, add not can convection cell the contributive solid material of the weightening finish problem that may cause underweight fluid to rise, this problem with overflow or wall collapses relevant.The further problem that solid lubricant runs into be employed valve and other flow and pressure control equipment in the small diameter bore that exists may not allow to use the solid particulate lubricant because these materials hinder and have stopped up narrow restriction.More serious problem is that solid may be difficult to remove, and causes the formation that damages thus from cinclides.Although make great efforts constantly in this field, but still keep and exist the unsatisfied needs of following fluidic: this fluid reduces the drill string moment of torsion and does not show the problem that solid precipitation, high viscosity, toxicity and fluid gross weight reduce.
Summary of the invention
The present invention generally speaking relates to fluid and this fluidic manufacture method and the using method that is used to reduce the drill string moment of torsion.Fluid of the present invention comprises a kind of polymer coated colloidal solid material, and it has used the polymer coating that adds in pulverizing (that is, the grinding) process of this polymer coated colloidal solid material of preparation.
An illustrated embodiment of the present invention is included in the method that reduces moment of torsion in the drill string component of rotation.In this illustrative method, this method comprises injects the composition that comprises base fluids and polymer coated colloidal solid material in drilling fluid.Polymer coated colloidal solid material comprises: with the solid particulate of the polymeric dispersant bag quilt that is adsorbed on this solid particles surface.Polymeric dispersant is adsorbed on the solid particles surface in the pulverizing that is used to prepare polymer coated colloidal solid material (that is, grinding) process.The base fluids that uses in above-mentioned illustrated embodiment can be aqueous fluids or oily fluid, is preferably selected from: water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), fatty acid carboxylate ester and these materials with for a person skilled in the art should conspicuous similar fluidic combination and mixture.Suitable and illustrative colloidal solids is selected like this: make solid particulate be at least 2.68 material by proportion and form, be preferably selected from: barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate, these materials and other should be by the combination of suitable substance known in those skilled in the art and mixtures.In a preferred illustrated embodiment, the weight average particle diameter (d of polymer coated colloidal solid material
50) less than 10 microns.Another preferred illustrated embodiment is, the diameter of at least 50% solid particulate is less than 2 microns, and more preferably the diameter of at least 80% solid particulate is less than 5 microns.Perhaps, the diameter of the solid particulate more than 25% is less than 2 microns, more preferably more than the diameter of 50% solid particulate less than 2 microns.In a preferred illustrated embodiment, employed polymeric dispersant is that molecular weight is at least 2,000 daltonian polymkeric substance.In another preferred illustrated embodiment, polymeric dispersant is to be selected from following monomeric homopolymer or multipolymer: vinylformic acid, methylene-succinic acid, toxilic acid or acid anhydrides, Propylene glycol monoacrylate vinyl sulfonic acid, acrylamido 2-propane sulfonic acid, acrylamide, styrene sulfonic acid, vinylformic acid phosphoric acid ester, methylvinylether and vinyl acetate, wherein acid mono also can in and salify.
The invention still further relates to a kind of lubricating composition, it comprises base fluids and polymer coated colloidal solid material.This polymer coated colloidal solid material is formulated as the solid particulate that comprises with being adsorbed on the lip-deep polymeric dispersant bag of this colloidal solid particles quilt.
These and other features of the present invention preferably or in the explanation of illustrated embodiment are listed more completely to of the present invention below.
Description of drawings
Describe with reference to the accompanying drawings, this accompanying drawing is the graphic representation that the size distribution of colloidal barite of the present invention and API barite are compared.
Embodiment
A novel and novel aspect of the present invention is the dual role that colloidal solid is played the part of in drilling fluid.That is to say that the polymer coated colloidal particle can play the effect of weighting agent and lubricant simultaneously.This dualism of described material is novel for well drilling industry, because former, the function of weighting agent and lubricant is distinct.
Those skilled in the art should recognize, more than the density of the solid lubricant paid close attention to be usually less than the weighting agent that tradition is used.For example, the proportion of mineral derived graphite is about 2.09 to 2.25.In contrast, traditional weighting agent such as bar proportion are about 4.50, and the proportion of rhombohedral iron ore is about 5.3.According to a preferred embodiment of the present invention, of the present invention lubricating/weighting agent is formed by following particle: this particle is made up of at least 2.68 material proportion.Like this, particle can play the effect of the combination of lubricant and weighting agent.The proportion of the formation colloidal solid particles that one aspect of the present invention comprised comprises that greater than 2.68 material one or more are selected from but are not limited to following material: barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore or other iron ores, peridotites, meteoric iron, Strontium Sulphate.Usually, the MV minium viscosity of well bore fluid is to use the most highdensity colloidal solid to obtain under any particular density.Yet other problems that need consider may influence the selection of product, for example cost, local operability and grind required energy.
Those skilled in the art it is to be further appreciated that traditional weighting agent is showing minimum effect as the barium sulfate of pulverizing (" barite ") aspect the reduction drill string moment of torsion.From physical angle, traditional weighting agent has utilized its high-density, and has shown 10 to 30 microns median size (d
50).Those skilled in the art should be well known that the particularly bar character of traditional weighting agent depends on the strict quality parameter that American Petroleum Institute (API) (API) is established.For these materials are suspended fully, need in water-based fluid, add jelling agent or tackifier such as wilkinite, perhaps in oil based fluids, add organically-modified wilkinite.Polymeric viscosifiers such as xanthan gum are added into usually to reduce the settling velocity of traditional weighting agent.Therefore, making us very surprised is, comprise the product of the present invention with the solid colloidal particle of polymkeric substance deflocculation agent or dispersion agent bag quilt, provide and contained high-density solid fluid, it has also reduced the moment of torsion in the drill string rotating part and can not increase sedimentation or sinking.
Additive of the present invention comprises the dispersed solids colloidal solid with polymkeric substance deflocculation agent or dispersion agent bag quilt.Small particle diameter will produce suspension or slurry, and this tendency that will show sedimentation or sinking reduces, and the polymeric dispersant on the particle surface has been controlled intergranular interaction simultaneously.Small just particle diameter and the combination that mutual effect is controlled to gel phase have been in harmonious proportion high-density and than these two purposes of high lubricity.
According to the present invention, polymeric dispersant is coated in being used to form the process of colloidal solid on the weightening finish particulate surface.Believe that in grinding the process of processing the new particle surface that exposes becomes and is aggregated thing bag quilt, obtains the shown character of colloidal solids of the present invention thus.Testing data shows, has caused short grained concentrated slurry in the colloidal solid material that does not have to produce under the situation of polymeric dispersant, and it is can not be with the paste or the gel of pump suction.According to instruction of the present invention, polymeric dispersant adds in attrition process.Believe with the situation of back adding polymeric dispersant in subparticle and compare that this species diversity provides favourable improvement at the particles dispersed state aspect.According to a preferred implementation, polymeric dispersant is chosen as the colloidal solid interphase interaction mechanism that provides suitable, so that make its pollutent that can tolerate the common well bore scope, comprises salt loading.
It is known grinding solid material with the method that obtains solid colloidal particle of the present invention, for example visible English Patent 1,472,701 or 1,599,632 specification sheets.Mineral in the waterborne suspension and polymeric dispersant are mixed, grind the time that is enough to provide required size distribution in the forced fluidized bed of particle grinding medium then.Important preferred implementation of the present invention aspect is to have polymeric dispersant in the step of " wet method " grinding mineral.This has prevented that the new plane of crystal that forms from forming aggregate, if these aggregates were handled with dispersion agent afterwards again, then can not be broken so easily in grinding steps.
A preferred embodiment of the present invention is the weight average particle diameter (d of colloidal solid particles
50) less than 10 microns.Another preferred illustrated embodiment be the diameter of at least 50% solid particulate less than 2 microns, more preferably the diameter of at least 80% solid particulate is less than 2 microns.Perhaps, in an illustrated embodiment, size distribution be diameter more than 25% solid particulate less than 2 microns, more preferably more than the diameter of 50% solid particulate less than 2 microns.This will strengthen the characteristic of the sedimentation of suspension or the stable aspect that sinks, and simultaneously fluidic viscosity can not be elevated to and make it can't be with the degree of pump suction.
Polymer coated colloidal particle according to the present invention can be provided as the concentrated slurry in aqueous medium or oily fluid.In the later case, the dynamic viscosity of oily fluid should be less than 10 centistokes (10 square millimeters/second) in the time of 40 ℃, and for safety, its flash-point should be higher than 60 ℃.Suitable oily fluid is, for example, and diesel oil, mineral oil or white oil, n-paraffin or synthetic oil (as ﹠ Alpha ,-olefin oil, ester oil or poly-(alpha-olefin)).
When the polymer coated colloidal particle provided in aqueous medium, dispersion agent can be that for example, molecular weight is at least 2,000 daltonian water-soluble polymers.Polymkeric substance can be to be selected from (but being not limited to) following any monomeric homopolymer or multipolymer: vinylformic acid, methylene-succinic acid, toxilic acid or acid anhydrides, Propylene glycol monoacrylate vinyl sulfonic acid, acrylamido 2-propane sulfonic acid, acrylamide, styrene sulfonic acid, vinylformic acid phosphoric acid ester, methylvinylether and vinyl acetate.Acid mono also can in and salify, for example sodium salt.
Have been found that when adding dispersion agent in (that is, the grinding) process of pulverizing the polymkeric substance of intermediate molecular weight (for example, in 10,000 to 200,000 scope) can use effectively.The advantage of the dispersion agent of intermediate molecular weight is the susceptibility of pollutent such as salt, clay lower, therefore can be applicable to well bore fluid well.
When colloidal solid provides in oil medium, dispersion agent can be selected from, for example, molecular weight is at least 150 the carboxylic acid such as alkaline earth salt, phosphatide such as Yelkin TTS, synthetic polymer such as the Hypermer OM-1 (trade(brand)name of ICI) of oleic acid and polyhydric aliphatic acid, alkyl benzene sulphonate (ABS), alkansulfonic acid, linear alpha-alkene sulfonic acid or above-mentioned any acid.
Although do not mean that the restriction that is subjected to any concrete intreractive theory, believe when grinding in high-density (usually greater than 2.1sg, be preferably 2.5sg) under when carrying out, it is more effective forming colloidal solid material by the high energy wet process, and wherein median particle diameter is that the API barite of 25-30 micron is reduced to median particle diameter less than 2 microns.Under these high-density, bar volume or mass fraction are very high.For example, under 2.5 proportion, the finished product of double centner contain about 78 kilograms barite.Yet the slurry that obtains still keeps fluid.In the comminution process, the existence of surface-active polymer is the important factor that realizes result of the present invention.And surface-active polymer is designed to be adsorbed onto on the surface site of barite particle.In masher, when bar mass fraction was very high, polymkeric substance found the approach on the particle surface that enters new formation easily.In case polymkeric substance " discovery " barite--it has the chance that each is so done in the environment of masher--combines in (it is grinding inside can reach 85-90 ℃) the environment of wet grinding machine and extreme high energy, this has guaranteed that effectively polymkeric substance " covering " is around the colloid size is bar.As the result of this process, inferring does not have polymkeric substance " circle " or " tail " to make barite adhere to, hinder or be wrapped on the adjacent particles.Therefore, infer that the high energy and the high shear force of milled processed guaranteed that polymkeric substance for good and all is retained on the barite, so polymkeric substance can desorb or unclamp.
This intreractive theory is supported by following observations: add identical polymkeric substance and mixed with common experimental chamber equipment in room temperature in the colloidal barite of equal in quality branch rate, but obtain very different results.Under this condition, believe that polymkeric substance can not make itself appropriately to be attached on the surface.This can be owing to the existence of the hydrate that has occupied the surface bonding site or other molecule spheroids.Therefore, polymeric dispersant can for good and all " not annealed (anneal) ", and from the teeth outwards, therefore, the rheological of suspension is very high.Also observe, suspension may not can have tolerance so to other pollutents, because polymkeric substance is intended to himself is separated and replace from barite be adsorbed onto on the stronger site of these reactivities.
Following examples are used to illustrate the character and the performance of drilling fluid of the present invention, but the invention is not restricted to show the embodiment of these embodiment.All tests are carried out according to available API RP13B.Be mixed on Silverson L2R or the Hamilton Beach Mixer and carry out.Viscosity under the various shearing rates (RPM ' s) and the acquisition of other rheological property uses Fann viscometer.Mud weight is used standard mud scale or analytical balance inspection.Fluid loss is measured with standard A PI fluid loss unit (cell).
When expression metric system Equivalent, use the following coefficient that transforms to metric system made in U.S.A: 1 gallon=3.785 liters; 1 pound=0.454 kilogram; 1 pound of/gallon (ppg)=0.1198 gram/cubic centimetre; 1 barrel=42 gallons; 1 pound of/barrel (ppb)=2.835 kilograms per cubic meter; 1 pound/100 square feet=0.4788 handkerchief.
These tests have used the barite that grinds of different grades to carry out: weight average particle diameter (D
50) be about 20 microns standard level API barite; Mean sizes is 3 to 5 microns the barite that is untreated (M), and it grinds/grind barite under situation of dispersion agent and prepare by being used in dry state and not existing; And have the polymeric dispersant that in " wet method " process of lapping, adds according to colloidal barite of the present invention.Those skilled in the art should recognize that other particulate materials can be used for practice of the present invention.
The representative sample of size distribution as shown in Figure 1.As shown in Figure 1, those skilled in the art are to be understood that and recognize that colloidal barite particle grain size distribution of the present invention is very different with the API barite.Specifically, people should determine, more than the particle diameter of the colloidal barite of the present invention of about 90% (volume percent) less than about 5 microns.In contrast, in the API specification sheets, the particle grain size that is less than 15 volume % is less than 5 microns.
Polymeric dispersant is IDSPERSE
TMXT, a kind of anionic acrylic ter-polymers, its molecular weight are 40, and 000-120 in 000 the scope, has carboxylate radical and other functional groups, can obtain by the M-I LLC company of commercial sources from the Houston, Texas.The advantage of this preferred polymers is, the temperature up to 200 ℃ be stable, large-scale pollutent is had tolerance, good filtering property is provided and is difficult for from the particle surface desorb.
Following examples have illustrated the dual function of lubricant as weighting agent and lubricant (that is, reducing moment of torsion).
Use the standard weight spar and, prepare 22ppg[2.63 gram/cubic centimetre based on barium sulfate and water according to colloidal barite of the present invention] fluid.Do not add jelling agent during the 22ppg slurry of preparation api class barite and water, so that control particle interphase interaction (fluid # 1).Fluid # 2 is also based on standard A PI barite, but the back adds 2 pounds of/barrel (5.7 kilograms per cubic meter) IDSPERSEXT.Fluid #3 is novel lubricating/weighting agent of 100%, and its size that contains 67%w/w is less than 1 micron particle, and at least 90% less than 2 microns.The result provides in Table I.
Table 1
| # | Viscosity under the various shearing rates (rpm of stirring): dial reading or " Fann unit " | Plastic viscosity | Yield-point | |||||
| 600rpm | 300rpm | 200rpm | 100rpm | 6rpm | 3rpm | mPa.s | 1b/100ft 2 (Pa) | |
| 1 | 250 | 160 | 124 | 92 | 25 | 16 | 90 | 70(34) |
| 2 | 265 | 105 | 64 | 26 | 1 | 1 | 160 | -55(-26) |
| 3 | 65 | 38 | 27 | 17 | 3 | 2 | 27 | 11(5) |
For fluid # 1, its viscosity is very high, and this slurry be observed filter very fast.(if further add material and run off to reduce fluid, viscosity also will further raise).This system is obvious sedimentation through 1 hour, obtains a large amount of free water (being calculated as 10% original volume).
The back adds the IDSPERSE XT (fluid #2) of 2 pounds/barrel [5.7 kilograms/cubic centimetre] in traditional API barite, has reduced low-shear rate viscosity by the interphase interaction of control particle.Yet because granule density and median size, fluid shows the swelling property (dilatency) by high-ductility viscosity and the indication of negative yield-point.Pressure reduction when aspirating with pump has sizable effect to these fluids for this.That is to say, because high viscosity is aspirated this fluidic ability with pump and greatly reduced.Fluid # 2 is sedimentation immediately when leaving standstill.
On the contrary, fluid #3 shows fabulous inductile viscosity.The particle interphase interaction has been controlled in the existence of polymeric dispersant, makes fluid #3 to aspirate with pump, and is not gel.Equally, much lower median size has been stablized flow pattern, now, and at 1000s
-1Be stratified, this is confirmed by inductile viscosity and positive yield-point.
Test the effect that adds selected polymeric dispersant with check back in the slurry of the weighting agent that contains the same colloidal size.Select the barite (D of grinding
50～4 microns) and the lime carbonate (particle of 70wt% is less than 2 microns) that grinds, the particle diameter of the two is all similar to related here the present invention.Prepare slurry down in the granule integration rate (0.282) that equates, and compare with product of the present invention (new barite).Referring to Table II.
Measure rheological at 120 (49 ℃), add 6ppb (17.2 kilograms per cubic meter) IDSPERSE XT then.Measure the rheological (referring to Table III) of the slurry that obtained afterwards at last at 120 with other API fluid leaching test.
Table 2
| # | Mineral | Dispersion agent | Density (ppg) | Volume fraction | wt/wt |
| 4 | New barite | Add simultaneously with grinding | 16.0[1.92g/cm 3] | 0.282 | 0.625 |
| 5 | Grind barite | Do not add | 16.0[1.92g/cm 3] | 0.282 | 0.625 |
| 6 | Grind barite | The back adds | 16.0[1.92g/cm 3] | 0.282 | 0.625 |
| 7 | Lime carbonate | Do not add | 12.4[1.48g/cm 3] | 0.282 | 0.518 |
| 8 | Lime carbonate | The back adds | 12.4[1.48g/cm 3] | 0.282 | 0.518 |
Table 3
| # | Viscosity under the various shearing rates (rpm of stirring): dial reading or " Fann unit " | Plastic viscosity | Yield-point | The API fluid runs off | |||||
| 600rpm | 300rpm | 200rpm | 100rpm | 6rpm | 3rpm | mPa.s | 1b/100ft 2 | ||
| 4 | 12 | 6 | 4 | 2 | 6 | 0 | 11 | ||
| 5 | os | os | os | os | os | os | |||
| 6 | 12 | 6 | 4 | 2 | 6 | 0 | All 1 | ||
| 7 | os | os | 260 | 221 | 88 | 78 | |||
| 8 | 12 | 6 | 4 | 3 | 1 | 1 | 6 | 0 | All 2 |
1-is all fluid loss 2-all fluid losses in 20 minutes in 26 minutes
As shown in all fluid ran off in the API test, the back added polymkeric substance and does not bring any filtration control.
Those skilled in the art should realize and know that main valuable performance perameter is: low rheological comprises plastic viscosity (PV), yield-point (YP), gel-strength; Minimum rheology between the initial and thermal ageing property changes; Minimal fluid flow is become estranged and minimum is sunk or sedimentation.In the following embodiments, quantize to sink by the first half of the aging fluid sample of independent measurement and the density of Lower Half, and the equation below using calculates dimensionless factor:
Sag factor=(first half density)/(first half density+Lower Half density)
The factor be 0.50 be illustrated in whole fluid samples zero solids constituent from do not have variable density.Sag factor greater than 0.52 be regarded as usually unacceptable solids constituent from.
Embodiment 3
In the following embodiments, fluid recipes to two 13.0ppg compares, one of them increases weight with traditional API barite, and another uses usefulness polymer coated colloidal barite (PCC barite) weightening finish according to instruction preparation of the present invention, as the fluid slurry of 2.2sg.Contain other additive in the prescription to provide to following extra control: pH, fluid loss, rheological, to the inhibition of reactive shale and claystone.These additives can derive from M-I Drilling Fluids.
| Product | Fluid A | Fluid B |
| PCC barite pound/bucket API barite pound/bucket | 320.0 | 238.1 |
| Fresh water pound/bucket SODA ASH LIGHT 99.2 pound/bucket Celpol ESL pound/bucket Flotrol pound/bucket defoamer NS pound/bucket KCl pound/bucket Glydril; MC pound/bucket Duotec NS pound/bucket | 175.0 0.4 3.5 3.5 0.4 32.9 10.5 0.1 | 264.2 0.4 4.2 0 0 36.1 10.5 1.4 |
Fluid wore out 48 hours in 104 static heat, obtained the following illustrative result.
| FANN 35 readings (120 ) | Fluid A | Fluid B | ||
| Initially | Aging | Initially | Aging | |
| 600rpm 300rpm 200rpm 100rpm 6rpm 3rpm | 56 36 28 19 5 4 | 62 41 33 23 7 6 | 73 52 42 31 11 9 | 65 47 39 29 10 8 |
| PV (cps) YP (pound/100 square feet) | 20 16 | 21 20 | 21 31 | 18 29 |
| 10 minutes gels (pound/100 square feet) of 10 gels in second (pound/100 square feet) | 5 8 | 7 8 | 10 | 9 12 |
| Sag factor | 0.50 | 0.58 | ||
Look back The above results, those skilled in the art should recognize, with the fluid A of polymer coated colloidal barite configuration do not have solids constituent from, its sag factor is 0, and its rheological profile (rheological profile) is far below the fluid that increases weight with traditional API barite.
Embodiment 4
In the following embodiments, select the fluidic character of fresh water fluid of 14.0ppg: polymer coated colloidal barite, the colloidal barite of not wrapping quilt and traditional API barite relatively to prepare with following material.Fluid A prepares with polymer coated colloidal barite of the present invention.Fluid B prepares with traditional API barite.The colloidal barite preparation that fluid C does not wrap quilt with commercial grade, this bar median particle diameter is 1.6 microns, can derive from Canadian Highwood ResourcesLtd.The back grinding interpolation that bag of the present invention is aggregated thing is also contained in the prescription of fluid B and C, so that fluid remains in the deflocculate condition.
| Product | Fluid A | Fluid B | Fluid C |
| PCC barite pound/bucket API barite pound/bucket Sparwite W-5HB pound/bucket | 407 | 300 | 310 |
| Fresh water pound/bucket Idsperse XT XCD polymkeric substance pound/bucket DUAL-FLO pound/bucket wilkinite pound/bucket | 182 0.5710 | 2766.00.6510 | 274 6.2 0.5 7 10 |
The sample of fluid A, B and C deliberately pollutes with wilkinite, so that imitation comprises natural drilling well solid in prescription.Sample was the dynamic thermal ageing of 150 16 hours.Exemplary and illustrative result after aging is as follows.
| FANN 35 readings (100 ) | Fluid A | Fluid B | Fluid C | |||
| No wilkinite | Wilkinite is arranged | No wilkinite | Wilkinite is arranged | No wilkinite | Wilkinite is arranged | |
| 600rpm 300rpm 200rpm 100rpm 6rpm 3rpm | 74 48 38 27 8 6 | 76 49 39 27 8 6 | 78 51 39 27 8 6 | 205 129 100 67 20 19 | 94 58 45 29 7 6 | Exceed scale and exceed scale |
| PV (cps) YP (pound/100 squares of English to the greatest extent) | 26 22 | 27 22 | 27 24 | 76 53 | 36 22 | |
| 10 gel in second (pound/100 square feet) gels in 10 second (pound/100 square feet) | 7 9 | 6 9 | 6 7 | 17 20 | 6 7 | |
| API fluid loss (ml/30min) | 3.5 | 3.0 | 4 | 3.9 | ||
Look back above data, those skilled in the art should recognize that the character of fluid A remains unchanged substantially, and simultaneously fluid B becomes very sticking, yet, with the rheological of the fluid C of the colloidal barite preparation of not wrapping quilt viscosity too after aging, to such an extent as to can't measure.
Embodiment 5
In the 14ppg fluid polymer coated colloidal barite of the present invention and traditional API barite are done further comparison, wherein the fluidic yield-point has been adjusted to two kinds of fluids and has equated before aging.
| Product | Fluid A | Fluid B |
| PCC barite (2.4sg) pound/bucket API barite pound/bucket | 265 | 265 |
| Fresh water pound/bucket SODA ASH LIGHT 99.2 pound/bucket KOH pound/bucket PolyPlus RD pound/bucket PolyPac UL Duovis pound/bucket KCl pound/bucket | 238 0.5 0.5 0.5 2.0 1.0 8.0 | 293 0.5 0.5 0.5 2.0 0.75 8.0 |
Fluid was the dynamic thermal ageing of 150 16 hours.Following table has shown example results.
| FANN 35 readings (120 ) | Fluid A | Fluid B | ||
| Initially | Aging | Initially | Aging | |
| 600rpm 300rpm 200rpm 100rpm 6rpm 3rpm | 64 42 32 22 6 4 | 61 39 32 21 5 4 | 80 50 33 24 6 4 | 72 43 32 21 6 4 |
| PV (cps) YP (pound/100 square feet) | 22 20 | 22 17 | 30 20 | 29 14 |
| 10 minutes gels (pound/100 square feet) of 10 gels in second (pound/100 square feet) | 5 17 | 5 11 | 5 6 | 5 6 |
| API fluid loss (ml/30min) | 2.8 | 4.7 | ||
| VST ppg | 0.21 | 1.33 | ||
Looking back foregoing, it will be appreciated by those skilled in the art that the bar plastic viscosity of polymer coated colloidal is lower, is better therefore.Viscometer sag test (VST) is the another kind of method of sinking of measuring in drilling fluid, and it is described by D.Jefferson in American Society of MechanicalEngineers Magazine (1991).As implied above, contain the VST value of the bar fluid A of polymer coated colloidal of the present invention, be lower than fluid B with untreated API barite preparation.
Embodiment 6
The long-term thermal stability of colloidal barite fluids of the present invention is shown in the embodiment of following 17.34ppg.The ECF-614 additive is a kind of organophilic clay additive, and it can derive from M-I Drilling Fluids.
| Product | Fluid A |
| PCC barite (2.4sg) pound/bucket fresh water pound/bucket ECF-614 pound/bucket | 682 53.5 2.0 |
Fluid wore out 4 days in 350 static heat.Following table provides example results.
| FANN 35 readings (120 ) | Fluid A | |
| Initially | Aging | |
| 600rpm 300rpm 6rpm 3rpm | 107 64 7 5 | 45 28 3 2 |
| PV (cps) YP (pound/100 square feet) | 43 21 | 17 11 |
| 10 minutes gels (pound/100 square feet) of 10 gels in second (pound/100 square feet) | 6 10 | 4 11 |
| Sag factor | 0.503 | |
Look back above data, those skilled in the art are to be understood that and recognize the long-term thermal stability of colloidal barite fluids of the present invention.
Embodiment 7
Carry out this test to show 24ppg[2.87 gram/cubic centimetre] feasibility of slurry (0.577 volume fraction).Every kind of fluid contains following component: fresh water 135.4 grams, barite 861.0 grams, IDSPERSE XT 18.0 grams.Barite component changes according to following table in composition.
Table IV
| # | Api class barite (%) | Colloidal barite (%) |
| 9 | 100 | 0 |
| 10 | 90 | 10 |
| 11 | 80 | 20 |
| 12 | 75 | 25 |
| 13 | 60 | 40 |
| 14 | 0 | 100 |
Table V
| # | Viscosity under the different shear rate (rpm of stirring): dial reading or " Fann unit " | Plastic viscosity | Yield-point | ||||||||
| 600 | 300 | 200 | 117 | 100 | 59 | 30 | 6 | 3 | mPa.s | 1b/100ft 2 (Pa) | |
| 9 | *os | 285 | 157 | 66 | 56 | 26 | 10 | 3 | 2 | ||
| 10 | 245 | 109 | 67 | 35 | 16 | 13 | 7 | 3 | 2 | 136 | -27(-13) |
| 11 | 171 | 78 | 50 | 28 | 23 | 10 | 7 | 3 | 2 | 93 | -15(-7) |
| 12 | 115 | 55 | 36 | 19 | 17 | 8 | 5 | 3 | 2 | 60 | -5(-2) |
| 13 | 98 | 49 | 34 | 21 | 20 | 14 | 10 | 4 | 3 | 49 | 0 |
| 14 | 165 | 84 | 58 | 37 | 32 | 22 | 18 | 5 | 3 | 81 | 3(-1.5) |
*Os=exceeds scale
The data presentation that Table V provides, api class barite be owing to its particle diameter and high volume fraction of realizing that high mud weight is required shows swelling property, i.e. high-ductility and significantly viscosity and negative yield-point.
Add fine fraction (fine grade) material and tend to make fluid stable, keep its stratification state under higher shearing rate: plastic viscosity obviously reduces and yield-point is just being become by negative.Low-shear rate viscosity (@3rpm) unobvious the increase caused by colloidal barite.
These results show, colloidal barite of the present invention can be advantageously and the coupling of traditional API barite.
Embodiment 8
Prepare lubricating/the weighting agent slurry of ten eight (18) pounds/gallon [2.15 gram/cubic centimetre], pollute with the common contaminants of certain limit subsequently according to of the present invention, and in 300 (148.9 ℃) hot rolling.Before the hot rolling after (BHR) and the hot rolling rheological results of (AHR) as follows.System shows fabulous stain resistance, low controllable rheology, and the fluid loss that has provided under the standard A PI mud test shown in the following Table VI is controlled: use the API tradition barite that does not have polymer coating to prepare fluid group of equal value, as the direct comparison of two kinds of grain types.(Table VII)
Table VI (new barite)
| Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | YP | Fluid runs off | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1b/100ft 2 (Pa) | ml | |
| The BHR of contamination-free | 21 | 11 | 8 | 4 | 1 | 1 | 10 | 1(0.5) | |
| The AHR of contamination-free | 18 | 10 | 7 | 4 | 1 | 1 | 8 | 2(1) | 5.0 |
| +80ppb NaCl BHR | 41 | 23 | 16 | 10 | 2 | 1 | 18 | 5(2.5) | |
| +80ppb NaCl AHR | 26 | 14 | 10 | 6 | 1 | 1 | 12 | 2(1) | 16 |
| +30ppb OCMA 1 BHR | 38 | 22 | 15 | 9 | 2 | 1 | 16 | 6(3) | |
| +30ppb OCMA AHR | 26 | 14 | 10 | 6 | 1 | 1 | 12 | 2(1) | 6.8 |
| +5ppb Lime BHR | 15 | 7 | 5 | 3 | 1 | 1 | 8 | -1(-0.5) | |
| +5ppb |
10 | 5 | 4 | 2 | 1 | 1 | 5 | 0 | 6.4 |
1The OCMA=Ocma clay, a kind of being generally used for duplicated the particulate ball clay that drilling well solid pollutes, available from the shale deposition thing in the drilling process.
Table VII (traditional API barite)
| Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | YP | Fluid runs off | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1b/100ft 2 (Pa) | ml | |
| The BHR of contamination-free | 22 | 10 | 6 | 3 | 1 | 1 | 12 | -2 | |
| The AHR of contamination-free | 40 | 24 | 19 | 11 | 5 | 4 | 16 | 8 | All 1 |
| +80ppb NaCl BHR | 27 | 13 | 10 | 6 | 2 | 1 | 14 | -1 | |
| +80ppb NaCl AHR | 25 | 16 | 9 | 8 | 1 | 1 | 9 | 7 | All 1 |
| +30ppb OCMA BHR | 69 | 55 | 49 | 43 | 31 | 26 | 14 | 31 | |
| +30ppb OCMA AHR | 51 | 36 | 31 | 25 | 18 | 16 | 15 | 21 | All 2 |
| +5ppb Lime BHR | 26 | 14 | 10 | 6 | 2 | 1 | 12 | 2 | |
| +5ppb Lime AHR | 26 | 14 | 10 | 6 | 1 | 1 | 12 | 2 | All 1 |
1-30 is all fluid losses in second
All fluid losses in 2-5 minute
The relatively demonstration of two groups of data when comparing with traditional API barite, has goodish fluid loss control character according to of the present invention lubricating/weighting agent (novel particle).The API barite has also shown the susceptibility that drilling well solid is polluted, yet new barite system more has tolerance.
Embodiment 9
Experimentize and preparing density greater than the ability on the drilling mud of 20 pounds/gallon [2.39 gram/cubic centimetres] with proof novel lubricating/weighting agent.
Prepare the mud system of two 22 pounds/gallon [2.63 gram/cubic centimetres], weighting agent comprise 35% w/w new barite lubricated/mixture (fluid #1) and the 100%API level barite (fluid #2) of weighting agent and 65% w/w api class barite weighting agent, the two all contains 11.5 pounds of/gallon [32.8 kilograms per cubic meter] STAPLEX 500, and (trade mark is Schlumbverger, shale stabilizer), 2 pounds of/gallon [5.7 kilograms per cubic meter] IDCAP (trade mark is Schlumbverger, shale control agent) and 3.5 pounds of/gallon [10 kilograms per cubic meter] Repone K.Other additive provides the inhibition to drilling fluid, but has proved the carrying capacity of new formulation to the polymkeric substance of any follow-up adding here.Fluid thermal is rolled to 200 (93.3 ℃).The result provides in Table VIII.
Table VIII
| Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | Yield-point | Fluid runs off | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1b/100ft 2 (Pa) | ml | |
| Before the hot rolling (#1) | 110 | 58 | 46 | 30 | 9 | 8 | 52 | 6(2.9) | |
| After the hot rolling (#1) | 123 | 70 | 52 | 30 | 9 | 8 | 53 | 17(8.1) | 8.0 |
| Before the hot rolling (#2) | 270 | 103 | 55 | 23 | 3 | 2 | 167 | -64(-32) | |
| After the hot rolling (#2) | os | 177 | 110 | 47 | 7 | 5 | 12.0 | ||
Os: exceed scale
100%API level barite has very high plastic viscosity, and is disorderly as what show in the negative yield-point of quilt in fact.After hot rolling, rheological is high to having exceeded scale.
This experiment confirm novel lubricating of the present invention/weighting agent reduce the ability of fluid viscosity.Should lubricated/weighting agent be 100% according to colloidal barite of the present invention.Fluid #15 is based on synthetic oil (Ultidrill, trade mark are Schlumberger, a kind of linear alpha-alkene with 14 to 16 carbon atoms).Fluid #16 is water-based mud and comprises tackifier (0.5ppb IDFLO, Schlumberger trade mark, the former xanthan polymer of a kind of true yellow) and fluid loss control agent (6.6ppb IDVIS, Schlumberger trade mark).Fluid #15 is in 200 (93.3 ℃) hot rolling, and fluid #16 is in 250 (121.1 ℃) hot rollings (heat roll).Result after the hot rolling as shown in Table IX.
Table I X
| Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | Gel 1 | Yield-point | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1bs/100ft 2 (Pa) | 1bs/100ft 2 (Pa) | |
| #15:3.6ppg[1.63g/cm 3] | 39 | 27 | 23 | 17 | 6 | 5 | 12 | 7/11 | 15 |
| #16:14ppg[1.67g/cm 3] | 53 | 36 | 27 | 17 | 6 | 5 | 17 | 5/- | 19 |
1Measuring of fluidic gelling and suspension characteristic used the Fann viscometer determining at 10 seconds/10 minutes.
Even this prescription is not optimized, this experiment has clearly illustrated that also novel lubricating/weighting agent provides preparation to can be used for small hole (slimhole) purposes and or the fluidic approach of the like saline of pipe bit well fluids continuously.Rheological property is improved by adding colloidal solid.
Embodiment 11
Experimentizing to determine that novel lubricating/weighting agent is prepared the ability of well finishing liquid is density control, and therefore settling stability is a principal element.Lubricated/weighting agent is made up of new colloidal barite according to the present invention and 50 pounds of/barrel [142.65 kilograms per cubic meter] standard A PI level lime carbonate, and the latter serves as bridging solid (bridging solid).With 2 pounds of/barrel [5.7 kilograms per cubic meter] PTS 200 (Schlumberger trade mark, pH damping fluid) preparation 18.6ppg[2.23 gram/cubic centimetre] fluid.Test in the static-aging that 400 (204.4 ℃) carried out 72 hours.The result is as shown in the table, before the static-aging (BSA) and afterwards (ASA) shown good sedimentation stability and rheological property.
| Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | YP | Free-water * | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1b/100ft 2 (Pa) | ml | |
| 18.6ppg BSA | 37 | 21 | 15 | 11 | 2 | 1 | 16 | 5(2.5) | - |
| 18.6ppg ASA | 27 | 14 | 11 | 6 | 1 | 1 | 13 | 1(0.5) | 6 |
*Free-water is the volume that appears at the primary water at fluid top.Residual fluid has the density of homogeneous.
Embodiment 12
This experiment confirm the ability of novel lubricating/weighting agent preparation low density flow, and shown its patience that pH is changed.Lubricated/weighting agent is made up of new colloidal barite according to the present invention.With caustic soda preparation 16ppg[1.91 gram/cubic centimetre] fluid, so that with fluid rheology and the API filtration required level of pH regulator to experiment subsequently.Result displayed has shown the good patience of pH variation and good rheological property in the following table.
| Viscosity (Fann unit) under the various shearing rates (rDm of stirring) | PV | Yield-point | Fluid runs off | ||||||
| PH | 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1bs/100ft 2 (Pa) | ml |
| 8.01 | 14 | 7 | 5 | 3 | 7 | 0(0) | 8.4 | ||
| 9.03 | 14 | 8 | 5 | 3 | 6 | 2(1) | 8.5 | ||
| 10.04 | 17 | 9 | 6 | 3 | 8 | 1(0.5) | 7.9 | ||
| 10.97 | 17 | 9 | 6 | 3 | 8 | 1(0.5) | 7.9 | ||
| 12.04 | 19 | 10 | 7 | 4 | 1 | 1 | 9 | 1(0.5) | 8.1 |
Embodiment 13
This experiment confirm the ability of the low rheology HTHP water-based fluid of novel lubricating/weighting agent preparation.Lubricated/weighting agent is by new colloidal barite according to the present invention and 10 pounds of/barrel [28.53 kilograms per cubic meter] CALOTEMP (trade marks of Schlumberger, fluid loss additive) and 1 pound of/barrel [2.85 kilograms per cubic meter] PTS 200 (trade mark of Schlumberger, pH damping fluid) form.17ppg[2.04 gram/cubic meter] and 18ppg[2.16 gram/cubic centimetre] 250 (121 ℃) static-aging 72 hours.Result shown in the following table has shown good settling stability and the low rheological property in the filtration of experiment subsequently.
| Density | PH | Viscosity (Fann unit) under the various shearing rates (rpm of stirring) | PV | Yield-point | Free-water | Fluid runs off | |||||
| ppg | 600 | 300 | 200 | 100 | 6 | 3 | mPa.s | 1bs/100ft 2 (Pa) | ml | ml | |
| 17 | 7.4 | 28 | 16 | 11 | 6 | 1 | 1 | 12 | 4(2) | 10 | 3.1 |
| 18 | 7.5 | 42 | 23 | 16 | 10 | 1 | 1 | 19 | 4(2) | 6 | 3.4 |
Embodiment 14
The following examples have illustrated that the fluid that uses polymer coated colloidal solid material preparation of the present invention reduces the ability that therefore the drill string moment of torsion also plays lubricant.
Field experiment 1) hp-ht well of 311 millimeters sections, use the basic drilling fluid of conversion oil (invert oil) (paraffin) of 1.8 kg/liter (15 pounds/gallon), tilt to be drilled into 5,121 meters with 60 degree, added polymer coated colloidal solid of the present invention in this drilling fluid.This fluid formulation is 80: 20 a oil: the drilling fluid of water ratio has wherein added following other component: Emul HT (27.0 pounds/barrel), 8.1 pounds/barrel in lime, EMI-783 (3.2 pounds/barrel), EMI-603 (3.5 pounds/barrel), VG Supreme (1.8 pounds/barrel).Character below this fluid shows:
| Fluid properties | |
| Fluid weight (pound/gallon) | 14.58-15.08 |
| Viscosity during 100rmp (pound/100 square feet) | 11-17 |
| Viscosity during 3rmp (pound/100 square feet) | 2-3 |
| Elctrical stability (volt) | 555-898 |
| HTHP fluid loss (cubic centimetre/30 minutes) | 2.0-3.4 |
| LGS (pound/bucket) | 10-70 |
This fluid is carried out following observation: the fluid system proof is stable to 166 ℃ the maximum temperature of probing downwards; In the long-term quiet hour, there is not smear metal to be full of or sign that mud weight changes up to 82 hours; Be 25cps when plastic viscosity begins,, increase to 41cps during to end gradually along with mud weight and low gravity solid increase; Yield-point remains unchanged from the beginning to the end in the work area, changes between 3 and 41 pounds/100 square feet.Surprisingly, when comparing with the fluid of the tradition preparation of be used to offset a well (offset well), the required moment of torsion of rotary drill column assembly has reduced 22% on integrated spaced, in the inclined shaft work area up to 25%.
Field experiment 2) use 1.6 kg/liter (13 pounds/gallon) oil base drilling fluid, 215.9 millimeters sections of the big displacement of offshore drilling in the oil reservoir of the North Sea have added polymer coated colloidal solid of the present invention and have had following prescription in this drilling fluid:
| Product | Fluid |
| PCC barite pound/bucket water breaker EDC99DW base oil bucket lime pound/bucket Versatrol pound/128 pounds of/barrel Emul HT pound/buckets of bucket wilkinite | 175.0 0.18 0.5 7 2.8 4.6 17.5 |
Character below fluid shows:
| Viscosity (Fann unit) under the different shear rate (rpm of stirring) | PV | Yield-point | Fluid runs off | ||||||
| 600 | 300 | 200 | 100 | 6 | 3 | cps | Lb/100ft 2 (Pa) | ml | |
| 62 | 36 | 26 | 16 | 4 | 3 | 26 | 10 | 2.1 | |
With weight is 13.2 pounds/gallon and oil: the mud probing section of water ratio between 72: 28 and 84: 16.The water activity changes between 0.89 and 0.82, and elctrical stability is controlled between 675 to 706 volts.Observations is: sinking or sedimentation or variation do not take place in the mud weight; Can use fastidious (that is, thinner sieve) solid separable programming; 2, under the unbalance pressure of 321psi pressure differential sticking does not take place in the bottom of oil reservoir.When comparing with the offshore drilling of using traditional drilling fluid, this fluid system has reduced about 28% with the moment of torsion in the open bore.
Those skilled in the art are to be understood that and recognize, consider above-mentioned data, when comparing with the fluid of tradition preparation, comprise that the fluid of the colloidal barite of polymeric dispersant bag quilt of the present invention has reduced the required moment of torsion of rotary drill column.
Consider above-mentioned disclosure, those skilled in the art are to be understood that and recognize, an illustrated embodiment of the present invention comprises that a kind of reduction is used to drill the method for the drill string moment of torsion of missile silo.In such illustrative method, this method comprises, injects the composition that comprises base fluids and polymer coated colloidal solid material in drilling fluid.This polymer coated colloidal solid material comprises: weight average particle diameter (d
50) less than 10 microns solid particulate and the polymeric dispersant that in crushing process, is adsorbed on solid particles surface.The base fluids that uses in above-mentioned illustrated embodiment can be aqueous fluids or oily fluid, is preferably selected from: the ester of water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), fatty acid carboxylate and these materials and similar fluidic combination and the mixture that it will be apparent to those skilled in the art that.Suitable and illustrative colloidal solids is selected like this: solid particulate is made up of at least 2.68 material proportion, is preferably selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and these materials and should be by the combination of other suitable substance known in those skilled in the art and mixture.In a preferred and illustrated embodiment, the weight average particle diameter (d of polymer coated colloidal solid material
50) less than 2.0 microns.Another illustrated embodiment contains at least 60% diameter less than 2 microns solid particulate, and perhaps another kind of the selection is that particle diameter more than 25% solid particulate is less than 2 microns.The polymeric dispersant that uses an illustrative and preferred embodiment is that molecular weight is at least 2,000 daltonian polymkeric substance.Another preferably with illustrated embodiment in, polymeric dispersant is a water-soluble polymers, be to be selected from following monomeric homopolymer or multipolymer: vinylformic acid, methylene-succinic acid, toxilic acid or acid anhydrides, Propylene glycol monoacrylate vinyl sulfonic acid, acrylamido 2-propane sulfonic acid, acrylamide, styrene sulfonic acid, vinylformic acid phosphoric acid ester, methylvinylether and vinyl acetate, wherein acid mono also can in and salify.
Except above-mentioned illustrative method, the invention still further relates to a kind of lubricating composition that comprises base fluids and polymer coated colloidal solid material.Described polymer coated colloidal solid material is formulated as and comprises weight average particle diameter (d
50) less than 10 microns solid particulates and be coated on polymeric dispersant on the solid particles surface.An illustrated embodiment comprises base fluids, it is aqueous fluids or oily fluid, and is preferably selected from the ester of water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), fatty acid carboxylate and these materials and for a person skilled in the art should conspicuous other similar fluidic combination and mixture.In an illustrated embodiment, preferred solid particulate is made up of at least 2.68 material proportion, and more preferably colloidal solids is selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and these materials and should makes up and mixture by conspicuous other similar solid for a person skilled in the art.Weight average particle diameter (the d of the polymer coated colloidal solid material of in a preferred and illustrated embodiment, using
50) less than 2.0 microns.Another illustrated embodiment comprises at least 60% diameter less than 2 microns solid particulate, and perhaps another kind of the selection is that diameter more than 25% solid particulate is less than 2 microns.Polymeric dispersant is applied in preferred and the illustrated embodiment, and it is selected like this: the molecular weight of polymkeric substance is preferably at least 2,000 dalton.Perhaps, exemplary polymeric dispersant can be a water soluble dispersing agent, it is to be selected from following monomeric homopolymer or multipolymer: vinylformic acid, methylene-succinic acid, toxilic acid or acid anhydrides, Propylene glycol monoacrylate vinyl sulfonic acid, acrylamide 2-propane sulfonic acid, acrylamide, styrene sulfonic acid, vinylformic acid phosphoric acid ester, methylvinylether and vinyl acetate, wherein acid mono also can in and salify.
Those skilled in the art are to be understood that and recognize that the present invention further comprises a kind of method for preparing above-mentioned polymer coated colloidal solid particulate.Such illustrative method comprises: solid particulate materials and polymeric dispersant are ground the weight average particle diameter (d that is enough to realize less than 10 microns
50) time; Like this, polymeric dispersant is adsorbed onto on the solid particles surface.The process of lapping of preferred descriptions carries out in the presence of base fluids.The base fluids that uses in an illustrated embodiment is aqueous fluids or oily fluid, and is preferably selected from the ester and the combination thereof of water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), fatty acid carboxylate.In an illustrated embodiment, solid particulate materials is selected from proportion and is at least 2.68 material, and more preferably solid particulate materials is selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and these materials and for a person skilled in the art should conspicuous other similar solid combination and mixture.Method of the present invention is included in abrasive solid under the existence of polymeric dispersant.Preferred this polymeric dispersant is that molecular weight is at least 2,000 daltonian polymkeric substance.Polymeric dispersant in preferred and illustrated embodiment is a water-soluble polymers, it is to be selected from following monomeric homopolymer or multipolymer: vinylformic acid, methylene-succinic acid, toxilic acid or acid anhydrides, Propylene glycol monoacrylate vinyl sulfonic acid, acrylamide 2-propane sulfonic acid, acrylamide, styrene sulfonic acid, vinylformic acid phosphoric acid ester, methylvinylether and vinyl acetate, wherein acid mono also can in and salify.
Those skilled in the art should recognize that the product of above-mentioned illustrative method is regarded as a part of the present invention.Equally, such preferred implementation comprises the product of above-mentioned illustrative method, wherein weight average particle diameter (the d of polymer coated colloidal solid material
50) less than 2.0 microns.Another illustrated embodiment comprises at least 60% diameter less than 2 microns solid particulate, and perhaps another kind of the selection is that diameter more than 25% solid particulate is less than 2 microns.
Although equipment of the present invention, composition and method are being illustrated aspect preferred or the illustrated embodiment, it will be apparent to one skilled in the art that under the situation that does not deviate from notion of the present invention and scope and can be changed method as herein described.All conspicuous for a person skilled in the art this similar replacements or modification all are considered as dropping in the scope of listing in the following claim of the present invention and notion.
Claims (21)
1. lubricating composition, it comprises base fluids and polymer coated colloidal solid material, wherein said polymer coated colloidal solid material comprises: weight average particle diameter (d
50) less than 10 microns multiple solid particulates; And be adsorbed on polymeric dispersant on the described solid particles surface.
2. composition according to claim 1, wherein said base fluids are aqueous fluids or oily fluid.
3. composition according to claim 1, wherein said base fluids are selected from water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), the ester of fatty acid carboxylate and their combination.
4. composition according to claim 1, wherein said multiple solid particulate is selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and their combination.
5. composition according to claim 1, the weight average particle diameter (d of wherein said multiple solid particulate
50) less than 10 microns.
6. composition according to claim 1, wherein more than the particle diameter of 25% described multiple solid particulate less than 2 microns.
7. composition according to claim 1, wherein said multiple solid particulate is made up of at least 2.68 material proportion.
8. composition according to claim 1, wherein said polymeric dispersant are that molecular weight is at least 2,000 daltonian water-soluble polymers.
9. lubricating composition, it comprises base fluids and polymer coated colloidal solid material, wherein said polymer coated colloidal solid material comprises: multiple solid particulate; And the polymeric dispersant that is adsorbed on described solid particles surface, the particle diameter that wherein is less than 10% described solid particulate is greater than 10 microns.
10. composition according to claim 9, wherein said base fluids are aqueous fluids or oily fluid.
11. composition according to claim 9, wherein said base fluids are selected from water, salt solution, diesel oil, mineral oil, white oil, n-paraffin, synthetic oil, saturated and undersaturated poly-(alpha-olefin), the ester of fatty acid carboxylate and their combination.
12. composition according to claim 9, wherein said multiple solid particulate is selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and their combination.
13. composition according to claim 9, the weight average particle diameter (d of wherein said multiple solid particulate
50) less than 10 microns.
14. composition according to claim 9, wherein more than the particle diameter of 25% described multiple solid particulate less than 2 microns.
15. composition according to claim 9, wherein said multiple solid particulate is made up of at least 2.68 material proportion.
16. being molecular weight, composition according to claim 9, wherein said polymeric dispersant be at least 2,000 daltonian water-soluble polymers.
17. lubricating composition, it comprises base fluids and polymer coated colloidal solid material, wherein said polymer coated colloidal solid material comprises: multiple solid particulate and the polymeric dispersant that is adsorbed on described solid particles surface, and wherein the diameter of at least 90% described solid particulate is less than 10 microns; And wherein said polymeric dispersant is that molecular weight is at least 2,000 daltonian water-soluble polymers.
18. composition according to claim 17, wherein said multiple solid particulate is selected from barium sulfate (barite), lime carbonate, rhombspar, ilmenite, rhombohedral iron ore, peridotites, meteoric iron, Strontium Sulphate and their combination.
19. composition according to claim 17, wherein more than the particle diameter of 25% described multiple solid particulate less than 2 microns.
20. composition according to claim 17, wherein said multiple solid particulate is made up of at least 2.68 material proportion.
21. method that in the rotary drill column assembly, reduces moment of torsion, described method comprises: inject the composition that comprises base fluids and polymer coated colloidal solid material in drilling fluid, wherein said polymer coated colloidal solid material comprises: with the solid particulate that is adsorbed on the polymeric dispersant bag quilt on the solid particles surface.
Applications Claiming Priority (3)
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|---|---|---|---|
| US65528805P | 2005-02-22 | 2005-02-22 | |
| US60/655,288 | 2005-02-22 | ||
| PCT/US2006/006030 WO2006091562A1 (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
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| Publication Number | Publication Date |
|---|---|
| CN101124307A true CN101124307A (en) | 2008-02-13 |
| CN101124307B CN101124307B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800054062A Expired - Fee Related CN101124307B (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
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| Country | Link |
|---|---|
| US (1) | US20080167203A1 (en) |
| EP (1) | EP1853685A4 (en) |
| CN (1) | CN101124307B (en) |
| BR (1) | BRPI0607902A2 (en) |
| CA (1) | CA2598123C (en) |
| EA (1) | EA011177B1 (en) |
| MX (1) | MX2007010236A (en) |
| NO (1) | NO20074059L (en) |
| WO (1) | WO2006091562A1 (en) |
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| US20080169130A1 (en) * | 2007-01-12 | 2008-07-17 | M-I Llc | Wellbore fluids for casing drilling |
| US20090186781A1 (en) * | 2008-01-17 | 2009-07-23 | Hallibruton Energy Services, Inc., A Delaware Corporation | Drilling fluids comprising sub-micron precipitated barite as a component of the weighting agent and associated methods |
| US8252729B2 (en) | 2008-01-17 | 2012-08-28 | Halliburton Energy Services Inc. | High performance drilling fluids with submicron-size particles as the weighting agent |
| US8324136B1 (en) * | 2010-01-06 | 2012-12-04 | Grinding & Sizing Company LLC | Synergistic bead lubricant and methods for providing improved lubrication to drilling fluids for horizontal drilling |
| US8623790B2 (en) * | 2010-12-21 | 2014-01-07 | Newpark Drilling Fluids Llc | Method of drilling a subterranean well with crosslinked polyacrylic acid |
| US9777207B2 (en) | 2013-01-29 | 2017-10-03 | Halliburton Energy Services, Inc. | Wellbore fluids comprising mineral particles and methods relating thereto |
| US10407988B2 (en) | 2013-01-29 | 2019-09-10 | Halliburton Energy Services, Inc. | Wellbore fluids comprising mineral particles and methods relating thereto |
| US9410065B2 (en) | 2013-01-29 | 2016-08-09 | Halliburton Energy Services, Inc. | Precipitated particles and wellbore fluids and methods relating thereto |
| CN103396770B (en) * | 2013-07-16 | 2015-08-19 | 蔡修枝 | A kind of multifunctional drilling fluid additive |
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| US5325922A (en) * | 1992-10-22 | 1994-07-05 | Shell Oil Company | Restoring lost circulation |
| US5314031A (en) * | 1992-10-22 | 1994-05-24 | Shell Oil Company | Directional drilling plug |
| EG21132A (en) * | 1995-12-15 | 2000-11-29 | Super Graphite Co | Drilling fluid loss prevention and lubrication additive |
| US20030203822A1 (en) * | 1996-07-24 | 2003-10-30 | Bradbury Andrew J. | Additive for increasing the density of a fluid for casing annulus pressure control |
| US7267291B2 (en) * | 1996-07-24 | 2007-09-11 | M-I Llc | Additive for increasing the density of an oil-based fluid and fluid comprising such additive |
| GB2315505B (en) * | 1996-07-24 | 1998-07-22 | Sofitech Nv | An additive for increasing the density of a fluid and fluid comprising such additve |
| CN1132917C (en) * | 2001-01-05 | 2003-12-31 | 中国石油化工股份有限公司 | Additive for lubricant oil |
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2006
- 2006-02-22 EP EP06735616A patent/EP1853685A4/en not_active Withdrawn
- 2006-02-22 MX MX2007010236A patent/MX2007010236A/en unknown
- 2006-02-22 EA EA200701078A patent/EA011177B1/en not_active IP Right Cessation
- 2006-02-22 US US11/816,304 patent/US20080167203A1/en not_active Abandoned
- 2006-02-22 BR BRPI0607902-4A patent/BRPI0607902A2/en not_active Application Discontinuation
- 2006-02-22 CA CA2598123A patent/CA2598123C/en not_active Expired - Fee Related
- 2006-02-22 CN CN2006800054062A patent/CN101124307B/en not_active Expired - Fee Related
- 2006-02-22 WO PCT/US2006/006030 patent/WO2006091562A1/en active Application Filing
-
2007
- 2007-08-07 NO NO20074059A patent/NO20074059L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EA200701078A1 (en) | 2007-10-26 |
| BRPI0607902A2 (en) | 2009-10-20 |
| CN101124307B (en) | 2011-04-20 |
| NO20074059L (en) | 2007-11-19 |
| EP1853685A1 (en) | 2007-11-14 |
| CA2598123A1 (en) | 2006-08-31 |
| WO2006091562A8 (en) | 2007-11-01 |
| EA011177B1 (en) | 2009-02-27 |
| EP1853685A4 (en) | 2011-11-30 |
| US20080167203A1 (en) | 2008-07-10 |
| WO2006091562A1 (en) | 2006-08-31 |
| MX2007010236A (en) | 2007-11-06 |
| CA2598123C (en) | 2013-11-12 |
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