Abstract:
Method of joining at least two components (2, 3) utilising a fitting (1), where at least one of the components comprises, or is made of, a material which is difficult to weld. The components (2, 3) are provided with thicker walls at the end surfaces (6) that are to be joined. At least one of the thicker end walls is provided with an internal or external thread (T) and said at least two components are joined together by screwing said threaded end walls into and/or onto the fitting (1).
Abstract:
A modified API Buttress threaded casing connection is disclosed for use in drilling oil and gas wells in lieu of using conventional drill pipe. The coupling threads only are multiple tapered yet can be mated with standard API Buttress pin threads having a single taper. The coupling is also shortened to permit abutment of the mating pins at the center of the coupling and can be further enhanced with an integral, sacrificial wear sleeve on one end of the coupling.
Abstract:
An arrangement for locking a threaded pipe connection, wherein two threaded connection units are screwed together. The locking arrangement is characterized in that it comprises two locking rings which engage each other with corresponding teeth and notches on their first sides. Each of the two rings has a different number teeth and notches on their second side. The two second sides, which face the connection units, are formed to engage a corresponding number of notches and teeth formed on the shoulder of the connection unit's opposite side, after the rings have been spread apart in axial direction, while maintaining the engagement between the first and the second ring.
Abstract:
The present invention provides a connector arrangement for connecting and locking tubular members. The connector consists of two tubular members (100, 110) and a coupling member. The tubular members are threaded together to create a threaded connection. The locking arrangement is provided by a pathway (120, 130) formed on the tubular member whereby a locking member (500) can be inserted in to the pathway to lock the threaded connection. The locking arrangement may also be provided by a plurality of castellation members (614, 714) disposed on each tubular member. The connector may also have a separate coupling member (620) which has opposite right-hand (622R) and left-hand (622L) threaded ends to threadedly mate with the threads of the two tubular members.
Abstract:
A pipe and pipe coupling assembly (10) including a first pipe (20) having a first end (72) and a second pipe (22) having a second end (74). The first end (72) includes a threaded portion (60) and a keyway (32), and is adapted to slidably engage the second end (74). The second end (74) includes a key portion (36) that is adapted to engage the keyway (32), thereby impeding the rotation of the first pipe (20) relative to the second pipe (22). The pipe and pipe coupling assembly (10) further includes a coupling member (34) adaptable to be rotatably attached to the second end (74). The coupling member (34) further includes a threaded portion (58) operable to engage the threaded portion (60) of the first end (72), thereby removably coupling the first pipe (20) to the second pipe (22) in a keyed, end to end relationship.
Abstract:
A shoulder ring (10) for installing in the J-space between the installed pin ends within a coupling collar is taught having a body with a central opening therethrough, a first end face (12) on the body, an opposite end face (14) on the body, an inner surface (16) adjacent the central opening and extending between the first end face and the opposite end face and an outer surface (18) extending between the first end face and the opposite end face, the body having a substantially uniform cross sectional shape between the first end face, the opposite end face, the inner surface and the outer surface and the ring shaped such that its radius to the outer surface varies around the outer surface circumference to form a plurality of lobes (12).
Abstract:
A method of detecting thread wear for drill pipe and drill casing that are connectable end-to-end at threaded joint connections which includes the providing of a pair of pipe joints (11B, 12B) to engage upon assembly. A projection (30) is placed on a first of the pipe joints near the joint end portion (20B), the projection (30) facing a second pipe joint (19B) during assembly of the pair of pipe joints. The joints are connected together and observed after assembly to determine whether or not the projection (30) has become mechanically deformed or has scratched the surface of the opposing joint to thereby indicate a worn condition of the threads.
Abstract:
The invention concerns a tubular threaded joint provided with a device for preventing over-screwing and unscrewing, comprising a male component (3) with an external thread (8) and a female component (2) with an internal thread, these two components capable of being assembled according to a predetermined tightening torque. A female portion (7) arranged beyond the female thread (19) and a male portion (13) arranged beyond the male thread (12) provide between their internal (14) and external (15) surfaces a ring-shaped zone whereof a part at least form a gauged zone (20) wherein an adhesive provides mechanical bonding between the female portion (7) and the male portion (13). The joint is useful particularly in the oil and gas industry.
Abstract:
The invention concerns a tubular threaded joint provided with a device for preventing over-screwing and unscrewing, comprising a male component (3) with an external thread (8) and a female component (2) with an internal thread, these two components capable of being assembled according to a predetermined tightening torque. A female portion (7) arranged beyond the female thread (19) and a male portion (13) arranged beyond the male thread (12) provide between their internal (14) and external (15) surfaces a ring-shaped zone whereof a part at least form a gauged zone (20) wherein an adhesive provides mechanical bonding between the female portion (7) and the male portion (13). The joint is useful particularly in the oil and gas industry.