Drill string tooling joint

摘要

A joint connecting a pair of members rotatable about a common axis end to end includes a first member having a threaded end portion and a non-circular exterior surface rearwardly of the threaded end portion, a second member having a threaded socket wherein the threaded end portion of the second member can be engaged, and a non-circular exterior surface, a ground engagement sleeve having a non-circular profile on an inner surface thereof whereby the sleeve can be slidably mounted on the non-circular exterior profiles of the first and second members when such profiles are brought into alignment by rotation of one member relative to the other in a manner effective to pass torque from one member to the other by means of the non-circular profiles, a first pair of alignable holes in the sleeve and first member to receive a fastener to secure the sleeve to the first member and a hole in the second member penetrating the threaded socket and positioned to receive a fastener to secure the second member to a third member in place of the first member, the third member having a hole in a threaded end portion thereof alignable with the hole in the second member.

主权项

1. A pipe joint for use in rotary boring operations, the pipe joint comprising:
a first member having a non-circular exterior surface and a threaded socket; a second member comprising a threaded end portion for mating engagement with the threaded socket and a non-circular exterior surface portion corresponding to the non-circular exterior surface of the first member; and a ground engaging member having a non-circular internal surface and an outer surface for enlarging a borehole, the non-circular internal surface corresponds to the non-circular exterior surface of both the first member and the second member for slidably mounting the ground engaging member on the non-circular exterior surfaces of the first member and the second member when the threaded socket of the first member is engaged with the threaded end portion of the second member and to transmit torque from the first member and the second member to the ground engaging member; a fluid passage formed by an internalin the first member and an internal passage in the second member; a radial extending passage formed in the second member, having an opening formed in the non-circular exterior surface portion of the second member, to guide fluid from the internal passage of the second member to outside the second member; and alignable holes in the ground engaging member and the second member for receiving a fastener to secure the ground engaging member to the second member.