| 摘要 |
The present invention relates to a pipe connector, for example for interconnecting pipe sections to form a pipe string for use in the drilling and/or completion of offshore oil or gas wells. The pipe connector comprises a tubular box member 3 for connection to the end of a pipe 4 and a tubular pin member 1 for connection to the end of a pipe 2 and which is telescopically receivable within the box member. The members have corresponding generally frusto-conical peripheral surfaces 5, 6 which overlie one another when the members are fully telescoped together. The surfaces 5, 6 comprise interengageable helical projection and groove means 15, 16, 17 and 18 which extend therealong between end portions 11, 12, 13 and 14 which are arranged to be a shrink fit one on the other. The members of the connector are engageable and releasable by the use of fluid under pressure which is injected between the frusto-conical surfaces when the members are partially interengaged. A radial clearance is provided between the crest and root surfaces of the projection and groove means along which the pressurised fluid can flow. <IMAGE>
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