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For use in drill pipe conveyed logging systems wherein the logging apparatus is enclosed in a housing affixed to the lower end of a drill pipe string, a system is disclosed utilizing a wet connector and overshot. The wet connector includes a centralized upstanding mechanical connector means having a

For use in drill pipe conveyed logging systems wherein the logging apparatus is enclosed in a housing affixed to the lower end of a drill pipe string, a system is disclosed utilizing a wet connector and overshot. The wet connector includes a centralized upstanding mechanical connector means having a J-slot cooperative with pins inserted thereinto. The J-slot is adjacent to a sleeve which telescopes over an enclosed and protected upwardly facing electrical connector means. On the overshot, the solid body thereof includes a lower appended skirt having inwardly protruding pins which engage the J-slots to achieve a separate mechanical connection. There is internally of the overshot a spring mounted telescoping and movable electrical connector including a cooperative socket engaging the plug of the wet connector. The electrical connection is kept separate from the mechanical connection so that the entire load of operation is carried separately without interfering with operation of the electrical connectors.

대표청구항 ▼

For use in a logging tool system positioned in a well borehole by a drill string and exposed to drilling fluid in the well, a connective apparatus enabling the logging tool system to be selectively connected to a conductor system in a wireline, the connective apparatus comprising: (a) a wet connecto

For use in a logging tool system positioned in a well borehole by a drill string and exposed to drilling fluid in the well, a connective apparatus enabling the logging tool system to be selectively connected to a conductor system in a wireline, the connective apparatus comprising: (a) a wet connector having: (1) a lower end located terminal means adapted to be connected to a logging tool system on a drill pipe conveyed logging system; (2) an upwardly facing first electrical mating means connected to said terminal means; (3) an upwardly facing first mechanical mating means; (b) a wireline supported overshot having: (1) means connecting to a wireline; (2) second electrical mating means; (3) second mechanical mating means; (c) wherein: (1) said overshot positions said first and second mechanical mating means for achieving positive mechanical connection after travel of said overshot through said drill pipe; (2) said first and second electrical mating means achieve electrical connection to provide an electrical path from said logging system to said wireline; (3) said positive mechanical connection avoids placing a mechanical load on said electrical mating means; (4) said overshot is retrievable along said drill pipe after release of said mechanical and electrical connections; (5) said wet connector electrical mating means is concentric within said upwardly facing first mechanical mating means; and (6) said first mechanical mating means includes a telescoping sleeve resiliently forced upwardly around said first electrical mating means and including means on said overshot for forcing said sleeve downwardly to expose said upwardly facing first electrical mating means. A method of preparing to conduct logging operations a highly deviated well borehole comprising the steps of: (a) running a string of drill pipe into a highly deviated well borehole with a logging system attached thereto and positioning the logging system at a location in the well borehole to conduct logging operations; (b) connecting a wet connector to said logging system within the drill string; (c) running an overshot on a wireline through the drill string until said overshot arrives at said wet connector; (d) making a mechanical connection between said overshot and said wet connector; (e) making an electrical connection between said overshot and said wet connector to provide a signal path from said logging system along said wireline to enable logging signals to be sent along said wireline extending to the top of the highly deviated well; and (f) wherein said wet connector includes a guard sleeve enclosing an electrical connector means, and wherein said overshot moves said guard sleeve to expose said electrical connector means for connection thereto.