(19)
(11) EP 0 186 599 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.01.1989 Bulletin 1989/04

(43) Date of publication A2:
02.07.1986 Bulletin 1986/27

(21) Application number: 85402609.3

(22) Date of filing: 24.12.1985
(51) International Patent Classification (IPC)4: H01R 13/523, E21B 47/12, E21B 17/042, E21B 17/02
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 27.12.1984 US 686571

(71) Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Houston Texas 77023 (US)

(72) Inventors:
  • Sharp, Stanley O.
    Missouri City Texas 77489 (US)
  • Dieken, John M.
    Houston Texas 77099 (US)

(74) Representative: Dupont, Henri 
C/o Schlumberger Cambridge Research Limited High Cross Madingley Road
Cambridge CB3 0HG
Cambridge CB3 0HG (GB)


(56) References cited: : 
   
       


    (54) Apparatus for electrically interconnecting multi-sectional well tools


    (57) In the representative embodiment of the new and improved apparatus disclosed herein, a multi-section MWD tool is cooperatively arranged to include a plurality of separable tool bodies respectively carrying a pressure-tight enclosure with one or more electrical means and adapted to be tandemly coupled together to assemble a particular MWD tool. Mating electrical connectors connected to the electrical means are cooperatively supported in the threaded end portions of each tool body by mounting means uniquely arranged for selective manual adjustment to ensure reliable electrical connection to the connector in the next-adjacent tool body as well as to prevent the male threaded end portion of the adjacent tool body from damaging the connector in the female threaded end portion of the first tool body as the two bodies are being coupled together. Pressure-responsive means are also provided for biasing the mated electrical connectors together with sufficient force to withstand the extreme impact forces imposed on the MWD tool bodies as a well is being drilled.






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