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1. WO2000041480 - ELECTRICALLY CONDUCTIVE NON-AQUEOUS WELLBORE FLUIDS

Publication Number WO/2000/041480
Publication Date 20.07.2000
International Application No. PCT/EP2000/000357
International Filing Date 13.01.2000
Chapter 2 Demand Filed 31.07.2000
IPC
C09K 8/36 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
32Non-aqueous well-drilling compositions, e.g. oil-based
36Water-in-oil emulsions
CPC
C09K 8/36
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
8Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02Well-drilling compositions
32Non-aqueous well-drilling compositions, e.g. oil-based
36Water-in-oil emulsions
Y10S 507/925
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
507Earth boring, well treating, and oil field chemistry
925Completion or workover fluid
Applicants
  • SOFITECH N.V. [BE/BE]; Rue de Stalle 142 B-1180 Brussels, BE (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, GA, GB, GD, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZW)
  • SCHLUMBERGER CANADA LIMITED [CA/CA]; 24th Floor, Monenco Place 801 6th Avenue, S.W. Calgary, Alberta T2P 3W2, CA (CA)
  • COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER [FR/FR]; 50, avenue Jean-Jaurès F-92541 Montrouge, FR (FR)
  • SAWDON, Christopher [GB/GB]; GB (UsOnly)
  • TEHRANI, Mostafa [GB/GB]; GB (UsOnly)
  • CRADDOCK, Paul [GB/GB]; GB (UsOnly)
  • LAWSON, Anthony [GB/GB]; GB (UsOnly)
Inventors
  • SAWDON, Christopher; GB
  • TEHRANI, Mostafa; GB
  • CRADDOCK, Paul; GB
  • LAWSON, Anthony; GB
Agents
  • MENES, Catherine; Etudes et Productions Schlumberger Division Dowell 26, rue de la Cavée BP 202 F-92142 Clamart Cedex, FR
Priority Data
9900904.516.01.1999GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRICALLY CONDUCTIVE NON-AQUEOUS WELLBORE FLUIDS
(FR) FLUIDES DE FORAGE ELECTROCONDUCTEURS NON AQUEUX
Abstract
(EN)
A wellbore fluid having a non-aqueous continuous liquid phase that exhibits an electrical conductivity increased by a factor in order of 104 to 107 compared to conventional invert emulsion comprises from about 0.2 % to about 10 % by volume of carbon black particles, and one or more emulsifying surfactant(s) selected from the class including: nonionic emulsifiers of Hydrophilic-Lipophilic Balance (HLB) less than about 12, and anionic surfactants wherein the counter-ion (cation) is any of alkali metal, ammonium, or hydrogen ions. This wellbore fluid can be used for drilling or completing a well and can be used for providing enhanced information from electrical logging tools, measurement while drilling, logging while drilling, geosteering and the like.
(FR)
Fluide de forage à phase liquide continue non aqueuse, qui présente une conductivité électrique augmentée d'un facteur de l'ordre de 104 à 107 par rapport aux émulsions inverses classiques et contient d'environ 0,2 % à environ 10 % en volume de particules de noir de carbone et un ou plusieurs tensioactifs émulsifiants choisis dans la classe composée des émulsifiants non ioniques à rapport hydrophile-liphophile (HLB) inférieur à environ 12 et des tensioactifs anioniques dans lesquels les contre-ions (cations) sont des ions de métal alcalin, d'ammonium ou d'hydrogène. Ledit fluide peut être utilisé pour forer ou pour compléter un puits et peut également être utilisé pour fournir des informations améliorées provenant d'outils de diagraphie électriques, des mesures en cours de forage, la diagraphie en cours de forage, le géoguidage et analogues.
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