YU46268B - Hidraulični cementni mulj - Google Patents
Hidraulični cementni muljInfo
- Publication number
- YU46268B YU46268B YU211088A YU211088A YU46268B YU 46268 B YU46268 B YU 46268B YU 211088 A YU211088 A YU 211088A YU 211088 A YU211088 A YU 211088A YU 46268 B YU46268 B YU 46268B
- Authority
- YU
- Yugoslavia
- Prior art keywords
- weight
- cement
- amount
- dry form
- silicon dioxide
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
- C09K8/48—Density increasing or weighting additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/0031—Heavy materials, e.g. concrete used as ballast material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Sludge (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
naznačen time, što se sastoji od hidrauličnog cementa, mikronizovanog silicijum dioksida u količini od 5 do 85 mas.% u odnosu na masu cementa; punioca velike gustine, kao što je hematit, barit ili ilemnit, u količini od 5 do 250 mas.% u odnosu na masu cementa; usporivača, kao što su derivati lignina, u suvom obliku, u količini od 0 do 5 mas.% u odnosu na masu cementa; razredjivača, kao što su sulfonovani aromatični formaldehidi, u suvom obliku, u količini od 0 do 12 mas. % u odnosu na masu cementa; aditiva protiv gubitka tečnosti, kao što su derivati celuloze, u suvom obliku, u količini od 0 jdo 30 mas. % u odnosu na masu cementa; silicijum dioksidnog brašna ili silicijum dioksidnog peska u količini od 0 do 30 mas.% u odnosu na masu cementa; i vode, u količini potrebnoj da obezbedi gustinu cementnog mulja u opsegu od 1,95 do 2,40 g/cm3. Prijava sadrži 1 nezavisan zahtev + 6 zavisnih zahteva.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO874761A NO165673C (no) | 1987-11-16 | 1987-11-16 | Hydraulisk sementoppslemming. |
Publications (2)
Publication Number | Publication Date |
---|---|
YU211088A YU211088A (en) | 1990-10-31 |
YU46268B true YU46268B (sh) | 1993-05-28 |
Family
ID=19890397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
YU211088A YU46268B (sh) | 1987-11-16 | 1988-11-14 | Hidraulični cementni mulj |
Country Status (8)
Country | Link |
---|---|
US (1) | US4935060A (sh) |
GB (1) | GB2212489B (sh) |
HK (1) | HK7893A (sh) |
IT (1) | IT1229808B (sh) |
MX (1) | MX170558B (sh) |
NO (1) | NO165673C (sh) |
SG (1) | SG103392G (sh) |
YU (1) | YU46268B (sh) |
Families Citing this family (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO165021B (no) * | 1987-11-09 | 1990-09-03 | Norsk Hydro As | Hydraulisk tungvekts-sementoppslemming spesielt til bruk ved sementering av olje/gassbroenner og fremgangsmaate for fremstilling av oppslemmingen. |
US5106423A (en) * | 1988-12-02 | 1992-04-21 | Geochemical Corporation | Formation grouting method and composition useful therefor |
US5049288A (en) * | 1989-06-27 | 1991-09-17 | Halliburton Company | Set retarded cement compositions and methods for well cementing |
US5135577A (en) * | 1990-11-05 | 1992-08-04 | Halliburton Company | Composition and method for inhibiting thermal thinning of cement |
US5125455A (en) * | 1991-01-08 | 1992-06-30 | Halliburton Services | Primary cementing |
DE4100386A1 (de) * | 1991-01-09 | 1992-07-16 | Hilti Ag | In gegenwart von wasser abbindende massen und deren verwendung |
FR2673620B1 (fr) * | 1991-03-04 | 1994-04-08 | Dowell Schlumberger Cie Services | Composition pour la cimentation de puits petroliers a basse temperature. |
US5382290A (en) * | 1991-04-26 | 1995-01-17 | Shell Oil Company | Conversion of oil-base mud to oil mud-cement |
FR2679899B1 (fr) * | 1991-08-01 | 1994-02-11 | Institut Francais Petrole | Utilisation du scleroglucane comme additif a haute temperature pour les laitiers de ciment. |
US5168928A (en) * | 1991-08-15 | 1992-12-08 | Halliburton Company | Preparation and use of gelable silicate solutions in oil field applications |
NO920758D0 (no) * | 1991-09-25 | 1992-02-26 | Takenaka Corp | Hydraulisk substans |
US5149370A (en) * | 1991-10-21 | 1992-09-22 | Halliburton Company | Well cement compositions having improved properties and methods |
DE4208047C1 (de) * | 1992-03-13 | 1993-11-11 | Buderus Guss Gmbh | Mörtelmischung zur Umhüllung von metallischen Rohren und Formstücken |
FR2692885B1 (fr) * | 1992-06-26 | 1995-07-07 | Sandoz Sa | Mortier et procede de cimentation pour retablir l'etancheite au niveau d'une nappe geologiquement impermeable. |
US5327968A (en) * | 1992-12-30 | 1994-07-12 | Halliburton Company | Utilizing drilling fluid in well cementing operations |
US5332041A (en) * | 1992-12-30 | 1994-07-26 | Halliburton Company | Set-activated cementitious compositions and methods |
FR2704218B1 (fr) * | 1993-04-21 | 1995-06-09 | Schlumberger Cie Dowell | Laitiers de ciments pétroliers, leur préparation et leur utilisation à la cimentation de puits. |
US5398758A (en) * | 1993-11-02 | 1995-03-21 | Halliburton Company | Utilizing drilling fluid in well cementing operations |
US5355954A (en) * | 1993-11-02 | 1994-10-18 | Halliburton Company | Utilizing drilling fluid in well cementing operations |
US5769939A (en) * | 1993-12-07 | 1998-06-23 | Elkem Asa | Cement based injection grout |
FR2725980B1 (fr) * | 1994-10-25 | 1996-11-29 | Schlumberger Cie Dowell | Compositions de cimentation et application de ces compositions pour la cimentation des puits petroliers ou analogues |
FR2735465B1 (fr) * | 1995-06-13 | 1997-08-29 | Schlumberger Cie Dowell | Compositions de cimentation et application de ces compositions pour la cimentation des puits petroliers ou analogues |
US5890840A (en) * | 1995-12-08 | 1999-04-06 | Carter, Jr.; Ernest E. | In situ construction of containment vault under a radioactive or hazardous waste site |
FR2744118B1 (fr) * | 1996-01-31 | 1998-04-30 | Schlumberger Cie Dowell | Agent de controle du filtrat pour coulis de cimentation de puits petroliers ou analogues et compositions de coulis comportant ledit agent |
FR2746096B1 (fr) * | 1996-03-15 | 1998-07-03 | Utilisation de suspensions aqueuses de silice ou de silicoaluminate dans des compositions de beton | |
US5932000A (en) * | 1996-09-19 | 1999-08-03 | Eka Chemicals Ab | Method for preparation of a hardening composition |
US5806594A (en) * | 1997-03-31 | 1998-09-15 | Schlumberger Technology Corporation | Compositions and methods for cementing a well |
FR2770517B1 (fr) * | 1997-11-03 | 1999-12-03 | Bouygues Sa | Laitier de cimentation d'un puits, notamment d'un puits petrolier |
MXPA02008921A (es) | 2000-03-14 | 2004-10-15 | James Hardie Res Pty Ltd | Materiales de construccion de fibras-cemento, con aditivos de baja densidad. |
US6610224B2 (en) * | 2001-02-22 | 2003-08-26 | Sullivan Concrete Textures | Processes for producing monolithic architectural cementitious structures having decorative aggregate-containing cementitious surfaces |
US20030164119A1 (en) * | 2002-03-04 | 2003-09-04 | Basil Naji | Additive for dewaterable slurry and slurry incorporating same |
CA2439425C (en) * | 2001-03-02 | 2009-11-24 | James Hardie Research Pty Limited | Spattering apparatus |
DE60308651D1 (de) | 2002-02-16 | 2006-11-09 | Schlumberger Technology Bv | Zementzusammensetzungen für hochtemperaturanwendungen |
GB2389578A (en) * | 2002-06-14 | 2003-12-17 | Schlumberger Holdings | High temperature cement compositions for use downhole |
US6644405B2 (en) | 2002-03-21 | 2003-11-11 | Halliburton Energy Services, Inc. | Storable water-microsphere suspensions for use in well cements and methods |
US20030181542A1 (en) * | 2002-03-21 | 2003-09-25 | Vijn Jan Pieter | Storable water-silica suspensions and methods |
GB2387613A (en) * | 2002-04-17 | 2003-10-22 | Schlumberger Holdings | High temperature well cementing using silica-rich minerals |
US6565647B1 (en) * | 2002-06-13 | 2003-05-20 | Shieldcrete Ltd. | Cementitious shotcrete composition |
US7044170B2 (en) * | 2002-08-14 | 2006-05-16 | Construction Research & Technology Gmbh | Hydraulic cementitious composition with improved bleeding resistance |
MXPA05003691A (es) | 2002-10-07 | 2005-11-17 | James Hardie Int Finance Bv | Material mixto de fibrocemento de densidad media durable. |
US8145350B2 (en) | 2002-11-01 | 2012-03-27 | Lantech.Com, Llc | Method and system for building a load |
US7156173B2 (en) * | 2002-11-08 | 2007-01-02 | Bj Services Company | Cement compositions useful in oil and gas wells |
US6892814B2 (en) * | 2002-12-19 | 2005-05-17 | Halliburton Energy Services, Inc. | Cement compositions containing coarse barite, process for making same and methods of cementing in a subterranean formation |
US7055603B2 (en) * | 2003-09-24 | 2006-06-06 | Halliburton Energy Services, Inc. | Cement compositions comprising strength-enhancing lost circulation materials and methods of cementing in subterranean formations |
GB2407567A (en) * | 2003-10-27 | 2005-05-04 | Schlumberger Holdings | High temperature resistant cement |
US6983800B2 (en) * | 2003-10-29 | 2006-01-10 | Halliburton Energy Services, Inc. | Methods, cement compositions and oil suspensions of powder |
US7156174B2 (en) * | 2004-01-30 | 2007-01-02 | Halliburton Energy Services, Inc. | Contained micro-particles for use in well bore operations |
US7559369B2 (en) * | 2007-05-10 | 2009-07-14 | Halliubrton Energy Services, Inc. | Well treatment composition and methods utilizing nano-particles |
US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
US8343896B2 (en) * | 2005-01-24 | 2013-01-01 | Halliburton Energy Services, Inc. | Sealant compositions comprising diutan and associated methods |
US8703659B2 (en) * | 2005-01-24 | 2014-04-22 | Halliburton Energy Services, Inc. | Sealant composition comprising a gel system and a reduced amount of cement for a permeable zone downhole |
US7201798B2 (en) * | 2005-05-05 | 2007-04-10 | Halliburton Energy Services, Inc. | Set-delayed cement compositions comprising hydrated lime and silica and methods of cementing in subterranean formations |
US20060249289A1 (en) * | 2005-05-05 | 2006-11-09 | Halliburton Energy Services, Inc. | Set-delayed cement compositions comprising hydrated lime and silica and methods of cementing in subterranean formations |
NZ571874A (en) | 2006-04-12 | 2010-11-26 | Hardie James Technology Ltd | A surface sealed reinforced building element |
ES2296522B1 (es) * | 2006-05-26 | 2009-04-01 | Europea De Minerales Y Derivados, S.L. | Masa pesada para la fabricacion de productos con alta capacidad de radio-proteccion. |
NO327763B1 (no) * | 2006-09-15 | 2009-09-21 | Elkem As | Fremgangsmåte for sementering av gass- og oljebrønner samt sementslurry |
US9512351B2 (en) | 2007-05-10 | 2016-12-06 | Halliburton Energy Services, Inc. | Well treatment fluids and methods utilizing nano-particles |
US7784542B2 (en) * | 2007-05-10 | 2010-08-31 | Halliburton Energy Services, Inc. | Cement compositions comprising latex and a nano-particle and associated methods |
US7806183B2 (en) * | 2007-05-10 | 2010-10-05 | Halliburton Energy Services Inc. | Well treatment compositions and methods utilizing nano-particles |
US8430956B2 (en) | 2007-08-13 | 2013-04-30 | Texas Industries, Inc. | Stabilization of soils using a proportional lime slurry |
US8714809B2 (en) | 2007-08-13 | 2014-05-06 | Texas Industries, Inc. | System for manufacturing a proportional slurry |
US7993451B2 (en) * | 2007-08-13 | 2011-08-09 | Texas Industries, Inc. | Cement stabilization of soils using a proportional cement slurry |
US8209927B2 (en) | 2007-12-20 | 2012-07-03 | James Hardie Technology Limited | Structural fiber cement building materials |
US7740070B2 (en) * | 2008-06-16 | 2010-06-22 | Halliburton Energy Services, Inc. | Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same |
US20100270016A1 (en) * | 2009-04-27 | 2010-10-28 | Clara Carelli | Compositions and Methods for Servicing Subterranean Wells |
US7792250B1 (en) | 2009-04-30 | 2010-09-07 | Halliburton Energy Services Inc. | Method of selecting a wellbore cement having desirable characteristics |
EP2298848B1 (en) | 2009-08-28 | 2017-10-11 | Services Pétroliers Schlumberger | Method for servicing subterranean wells |
US8157009B2 (en) | 2009-09-03 | 2012-04-17 | Halliburton Energy Services Inc. | Cement compositions and associated methods comprising sub-micron calcium carbonate and latex |
US9062241B2 (en) * | 2010-09-28 | 2015-06-23 | Clearwater International Llc | Weight materials for use in cement, spacer and drilling fluids |
US9950952B2 (en) | 2010-11-30 | 2018-04-24 | Schlumberger Technology Corporation | Methods for servicing subterranean wells |
US9834719B2 (en) | 2010-11-30 | 2017-12-05 | Schlumberger Technology Corporation | Methods for servicing subterranean wells |
EP2537908B1 (en) * | 2010-12-18 | 2015-07-29 | Services Pétroliers Schlumberger | Compositions and methods for well completions |
GB2490166B (en) | 2011-04-21 | 2015-11-25 | Fumi Minerals Ltd | Weighting agent for use in subterranean wells |
US8887806B2 (en) | 2011-05-26 | 2014-11-18 | Halliburton Energy Services, Inc. | Method for quantifying cement blend components |
US8944165B2 (en) | 2013-01-11 | 2015-02-03 | Halliburton Energy Services, Inc. | Cement composition containing an additive of a pozzolan and a strength retrogression inhibitor |
US9273242B2 (en) * | 2013-09-09 | 2016-03-01 | Saudi Arabian Oil Company | High density cement formulation to prevent gas migration problems |
EP2876145A1 (en) * | 2013-11-26 | 2015-05-27 | Services Pétroliers Schlumberger | Compositions and methods for improving the toughnes of set cements |
EP2966143B1 (en) * | 2014-07-10 | 2019-08-21 | Services Petroliers Schlumberger | Methods for well cementing |
CN106479460B (zh) * | 2016-10-17 | 2021-03-02 | 西南石油大学 | 蒸汽吞吐转蒸汽驱油层改造用渗透性水泥浆 |
US10683724B2 (en) | 2017-09-11 | 2020-06-16 | Saudi Arabian Oil Company | Curing a lost circulation zone in a wellbore |
US10822916B2 (en) | 2018-02-14 | 2020-11-03 | Saudi Arabian Oil Company | Curing a lost circulation zone in a wellbore |
US11118417B1 (en) | 2020-03-11 | 2021-09-14 | Saudi Arabian Oil Company | Lost circulation balloon |
CN113087448B (zh) * | 2021-04-14 | 2023-04-11 | 中国海洋石油集团有限公司 | 一种水泥浆及其制备方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IS1485B (is) * | 1978-11-03 | 1992-06-30 | Aktieselskabet Aalborg Portland-Cement-Fabrik | Hlutir, mótaðir úr ólífrænum efnahópum, sem í er blandað sérstökum efnasamböndum til styrktar, þó þau teljist til lífrænna efnasambanda, og aðferð til framleiðslu þeirra |
NO148995C (no) * | 1979-08-16 | 1986-06-12 | Elkem As | Fremgangsmaate for fremstilling av sementslurry med lav egenvekt for bruk ved sementering av olje- og gassbroenner. |
JPS5836983A (ja) * | 1981-08-15 | 1983-03-04 | 黒崎窯業株式会社 | 耐熱性成形体 |
NO153566B (no) * | 1982-12-07 | 1986-01-06 | Elkem As | Tilsetningsblanding for betong og moertel, fremgangsmaate til fremstilling av blandingen, samt anvendelse derav. |
DE3530258A1 (de) * | 1985-08-23 | 1987-02-26 | Lentia Gmbh | Verwendung von salzen wasserloeslicher naphtalinsulfonsaeure-formaldehydkondensate als zusatzmittel fuer anorganische bindemittel und baustoff |
NO158499C (no) * | 1985-09-03 | 1988-09-21 | Elkem As | Hydraulisk sementoppslemming. |
NO165021B (no) * | 1987-11-09 | 1990-09-03 | Norsk Hydro As | Hydraulisk tungvekts-sementoppslemming spesielt til bruk ved sementering av olje/gassbroenner og fremgangsmaate for fremstilling av oppslemmingen. |
-
1987
- 1987-11-16 NO NO874761A patent/NO165673C/no not_active IP Right Cessation
-
1988
- 1988-11-10 IT IT2258388A patent/IT1229808B/it active
- 1988-11-14 MX MX1378488A patent/MX170558B/es unknown
- 1988-11-14 YU YU211088A patent/YU46268B/sh unknown
- 1988-11-15 GB GB8826684A patent/GB2212489B/en not_active Expired - Lifetime
-
1989
- 1989-11-16 US US07/436,978 patent/US4935060A/en not_active Expired - Fee Related
-
1992
- 1992-10-08 SG SG103392A patent/SG103392G/en unknown
-
1993
- 1993-02-04 HK HK7893A patent/HK7893A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
IT8822583A0 (it) | 1988-11-10 |
NO874761D0 (no) | 1987-11-16 |
YU211088A (en) | 1990-10-31 |
GB2212489A (en) | 1989-07-26 |
NO874761L (no) | 1989-05-18 |
US4935060A (en) | 1990-06-19 |
GB2212489B (en) | 1992-04-01 |
SG103392G (en) | 1992-12-04 |
MX170558B (es) | 1993-08-31 |
NO165673B (no) | 1990-12-10 |
NO165673C (no) | 1991-03-20 |
HK7893A (en) | 1993-02-12 |
IT1229808B (it) | 1991-09-13 |
GB8826684D0 (en) | 1988-12-21 |
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