A wellhead adapter assembly is disclosed. A wellbore adapter is designed for connection to a drillstring, with a riser fluidly connected to the wellbore adapter. At least one tubular arm section is rotatably and fluidly connected to the riser. A positioning system is attached to the at least one tubular arm. The positioning system is adapted to maintain the at least one tubular arm in a desired position relative to the riser, despite relative movement between the drillstring and a floating structure such as a drilling rig.

A wellhead adapter assembly is disclosed. A wellbore adapter is designed for connection to a drillstring, with a riser fluidly connected to the wellbore adapter. At least one tubular arm section is rotatably and fluidly connected to the riser. A positioning system is attached to the at least one tubular arm. The positioning system is adapted to maintain the at least one tubular arm in a desired position relative to the riser, despite relative movement between the drillstring and a floating structure such as a drilling rig.

The invention relates to a drill rod for transferring a torque comprising an elongate rod base body, along which runs at least one base line for a fluid and/or electric current and/or data, an upper suspension device for suspending the drill rod from a support element, a rotary bearing, which is arranged between the suspension device and the rod base body, wherein the rod base body is mounted rotatably relative to the suspension device about a rod longitudinal axis, and a rotary feedthrough, through which a line connection is formed between at least one feed line, which is fixed relative to the support element, and the at least one base line of the rotatably-mounted rod base body. The invention is characterized here in that the rotary bearing is arranged axially distanced from the rotary feedthrough, and in that the rotary bearing comprises an axial bearing which is arranged above or below the rotary feedthrough. The invention furthermore relates to a drilling apparatus comprising such a drill rod and to a method for retrofitting an existing Kelly bar arrangement.

In the specification and drawings a flowhead assembly is described and shown with a flow adapter positioned within a through bore of the flowhead assembly housing; a first ball valve and second ball valve located above the flow adapter; a spacer assembly positioned between the first and second ball valve; at least one side flow entry attachment fluidly connected with the through bore of the flowhead assembly. The sideflow entry attachment includes a first and second ball valve located in a central passage in the sideflow entry attachment housing, with a spacer assembly positioned between them; a flow guide insert is positioned above the ball valves and includes a flow path that is in fluid communication with the through bore of the flowhead assembly; a plug retains the flow guide insert within the central passage. Also described and shown is a frac head assembly including a flow adapter that has chamfered internal surfaces surrounding side entry apertures.

An elevator for use in handling a tubular includes a first body part coupled to a second body part and at least two slips coupled to each of the first and second body parts. One or more of the slips includes an engagement member for coupling with a mating member of the first body part or the second body part, wherein at least 25% of the engagement member is coupled with the mating member when the slip is in an open position.

An elevator for use in handling a tubular includes a first body part coupled to a second body part and at least two slips coupled to each of the first and second body parts. One or more of the slips includes an engagement member for coupling with a mating member of the first body part or the second body part, wherein at least 25% of the engagement member is coupled with the mating member when the slip is in an open position.

An elevator for use in handling a tubular includes a first body part coupled to a second body part; and at least two slips coupled to each of the first and second body parts, wherein one or more of the slips includes an engagement member for coupling with a mating member of the first body part or the second body part, wherein at least 25% of the engagement member is coupled with the mating member when the slip is in an open position. In another embodiment, a swivel includes an upper housing rotatably coupled to a lower housing; and a rotary union having a rotating body attached to the lower housing and a non-rotating body attached to the upper housing, wherein the swivel is configured to transfer load from the lower housing to the upper housing.

An elevator for use in handling a tubular includes a first body part coupled to a second body part; and at least two slips coupled to each of the first and second body parts, wherein one or more of the slips includes an engagement member for coupling with a mating member of the first body part or the second body part, wherein at least 25% of the engagement member is coupled with the mating member when the slip is in an open position. In another embodiment, a swivel includes an upper housing rotatably coupled to a lower housing; and a rotary union having a rotating body attached to the lower housing and a non-rotating body attached to the upper housing, wherein the swivel is configured to transfer load from the lower housing to the upper housing.

For use with a top drive power unit supported for connection with a well string in a well bore to selectively impart longitudinal and/or rotational movement to the well string, a feeder for supplying a pumpable substance such as cement and the like from an external supply source to the interior of the well string in the well bore without first discharging it through the top drive power unit including a mandrel extending through a sleeve which is sealably and rotatably supported thereon for relative rotation between the sleeve and mandrel. The mandrel and sleeve have flow passages for communicating the pumpable substance from an external source to discharge through the sleeve and mandrel and into the interior of the well string below the top drive power unit. The unit can include a packing injection system and novel seal configuration.

For use with a top drive power unit supported for connection with a well string in a well bore to selectively impart longitudinal and/or rotational movement to the well string, a feeder for supplying a pumpable substance such as cement and the like from an external supply source to the interior of the well string in the well bore without first discharging it through the top drive power unit including a mandrel extending through a sleeve which is sealably and rotatably supported thereon for relative rotation between the sleeve and mandrel. The mandrel and sleeve have flow passages for communicating the pumpable substance from an external source to discharge through the sleeve and mandrel and into the interior of the well string below the top drive power unit. The unit can include a packing injection system and novel seal configuration.