Abstract: In one embodiment a method and apparatus for an improved loading sub method and apparatus is disclosed. In one embodiment the method and apparatus can be used to pump various pump down means into the well bore from the rig.

Abstract: 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, clamp, and novel packing configuration.

Abstract: 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.

Abstract: What is provided is a method and apparatus which can be detachably connected to an annular blowout preventer thereby separating the drilling fluid or mud into upper and lower sections and allowing the fluid to be displaced in two stages, such as while the drill string is being rotated and/or reciprocated. In one embodiment the sleeve can be rotatably and sealably connected to a mandrel. The swivel can be incorporated into a drill or well string and enabling string sections both above and below the sleeve to be rotated in relation to the sleeve. In one embodiment the drill or well string does not move in a longitudinal direction relative to the swivel. In one embodiment, the drill or well string does move longitudinally relative to the sleeve of the swivel.

Abstract: A double swivel 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 double sleeves which are sealably and rotatably supported thereon for relative rotation between the sleeves and mandrel. The mandrel and sleeves 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, clamp, and novel packing configuration. In an alternative embodiment the unit can include a plug or ball insertion tool.

Abstract: 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, clamp, and novel packing configuration.

Abstract: 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, clamp, and novel packing configuration.

Abstract: A two-row cane harvester 10 simultaneously harvests two rows of sugar cane in a green tropical cane field. Gatherer chains 62, 64 lift fallen cane stalks upwardly and support the fallen cane stalks as the harvester 10 moves through the cane field. A pair of topper mechanisms 54 top the cane stalks while base cutters 80 base cut the cane. A pair of transversely spaced turnaround devices 62 each move the cane transversely past the respective topper mechanism and toward a centerline 22 of the harvester, and thrust the topped cane stalks in a direction away from the harvester movement such that the topped cane stalks do not interfere with the cane moving toward the topper mechanisms by the gatherer chains. Base cut cane is received base first into the harvester intake.

Abstract: A two-row cane harvester 10 simultaneously harvests two rows of sugar cane in a green tropical cane field. A pair of topper mechanisms 54 top the cane stalks while base cutters 80 base cut the cane. Base cut cane is received base first into the harvester intake. The cane is cleaned in a whole stalk condition with a cleaning mechanism 92 that includes a plurality of rotating tines 100 moving in a direction to engage and force the cane leaves toward a base of the cane stalk, thereby efficiently stripping the cane leaves. An extractor blower 106 removes the leaves from the rotating tines and the cleaned cane. A stalk cutter mechanism 120, 122 may be adjusted to cut the cleaned cane stalks into selected billet lengths. Cane is preferably fed into the cutter mechanism at a speed greater than the ground speed of the harvester moving through the field. Another blower or fan may be used to remove remaining leaves from the billets.

Abstract: A two-row cane harvester 10 simultaneously harvests two rows of sugar cane in a green tropical cane field. Gatherer chains 62, 64 lift fallen cane stalks upwardly and support the fallen cane stalks as the harvester 10 moves through the cane field. A pair of topper mechanisms 54 top the cane stalks while base cutters 80 base cut the cane. A pair of transversely spaced turnaround devices 62 each move the cane transversely past the respective topper mechanism and toward a centerline 22 of the harvester, and thrust the topped cane stalks in a direction away from the harvester movement such that the topped cane stalks do not interfere with the cane moving toward the topper mechanisms by the gatherer chains. Base cut cane is received base first into the harvester intake.

Abstract: An improved two-row, four-wheel cane harvester includes first and second front carrier assemblies for carrying cut cane rearward in first and second passageways each passing between the pair of front wheels and then outwardly between the respective front and rear wheels. First and second rear piler assemblies are provided for receiving cane from the respective first and second carrier assemblies and moving the cane transversely before releasing the cut cane across a cut cane row spaced between the first and second rows.

Abstract: An improved two-row, four-wheel cane harvester includes first and second front carrier assemblies for carrying cut cane rearward in first and second passageways each passing between the pair of front wheels and then outwardly between the respective front and rear wheels. First and second rear piler assemblies are provided for receiving cane from the respective first and second carrier assemblies and moving the cane transversely before releasing the cut cane across a cut cane row spaced between the first and second rows.