Abstract: Disclosed is a system to engage a plurality of tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. User selection may allow use of a plurality of tools during a procedure or during a plurality of procedures.

Abstract: A method of running tubulars includes attaching a load collar to a first tubular; landing the load collar on a load support member; connecting a second tubular to the first tubular; removing the load collar from the first tubular; and lowering the first tubular and the second tubular. In one embodiment, at least one of the first tubular and the second tubular is a screen.

Abstract: A tool 60 for rotating a tubular member 80 passing through a slip assembly 66 is powered by a rotary table 62 of a drilling rig. Tool 60 includes a cam ring 8 having a plurality of interior camming surfaces 82 thereon, and a cage plate assembly 84 rotatable with respect to the cam ring 8 and housing one or more gripping heads 94 for gripping engagement with the tubular 80. A powered drive unit 55 is provided for selectively rotating the cage plate assembly 84 with respect to the cam ring 8. A tool mount 10 removably connects the slip assembly and the cage plate assembly, and one or more axial adjustment members 17 permit limited axial movement of the cam ring 8 with respect to the slip assembly so that the gripping heads retain gripping engagement with the tubular member 80 while moving axially with respect to the body of the slip assembly.

Abstract: A tool 60 for rotating a tubular member 80 passing through a slip assembly 66 is powered by a rotary table 62 of a drilling rig. Tool 60 includes a cam ring 8 having a plurality of interior camming surfaces 82 thereon, and a cage plate assembly 84 rotatable with respect to the cam ring 8 and housing one or more gripping heads 94 for gripping engagement with the tubular 80. A powered drive unit 55 is provided for selectively rotating the cage plate assembly 84 with respect to the cam ring 8. A tool mount 10 removably connects the slip assembly and the cage plate assembly, and one or more axial adjustment members 17 permit limited axial movement of the cam ring 8 with respect to the slip assembly so that the gripping heads retain gripping engagement with the tubular member 80 while moving axially with respect to the body of the slip assembly.

Abstract: Rotary power slips mounted in the rotary table of an earth drilling rig and having slips for gripping and releasing pipe in the rotary table. The air transfer ring has concentric grooves in the upper surface. An annular seal ring is secured to the body of the rotary power slips and has a pair of air passageways. The air passageways lead to secondary fluid conduits in the body, which, in turn, lead to each end of the pneumatic cylinders to raise and lower the slips. Expansive rings are secured to the surface of the air transfer ring by mounting the edges of the rings into the grooves in the air transfer ring. When air pressure is applied through one of the primary fluid conduits, one of the expansive rings expands and cooperates with the lower surface of the seal ring to form an expansive fluid duct. The air pressure flows through a perforation in the expansive ring into the expansive fluid duct, and then through the air passageway and the secondary fluid conduit to the pneumatic cylinders.

Abstract: A power tool, such as a surgical drill, has a tool element retained in a collet coupled to the output spindle of the tool. Resilient member constantly maintains the collet in its closed position. Upon rotation of the spindle in a reverse direction, opposite to its normal driving direction, a cam is actuated to open the collet against the force of the resilient member, thereby facilitating removal of the tool element from the collet. Preferably, the tool is of the cordless type and has a reversible electric motor controlled by a pair of triggers mounted on the pistol-grip handle for the tool. The triggers are conveniently disposed adjacent to each other and are easily distinguishable from one another, thereby providing for a convenient one-hand operation of the tool.

Abstract: For clampingly holding a drill rod or the like, clamp apparatus that includes a mounting frame having spaced side members, a jaws holder having upwardly diverging end walls and bounding an opening for clamp jaws, longitudinally spaced jaw actuators that include piston cylinder combination having cylinders pivotally mounted on the jaw holder, and piston rods for moving jaw brackets upwardly and outwardly of one another, each bracket having an inclined leg extending into the jaw opening in slidable relationship with the adjacent end wall and into slots in the holder side walls, and side walls that have interleaving portions that maintain the brackets at substantially the same elevation relative one another while permitting the brackets moving longitudinally toward and away from one another, and a pin for releasably mounting each jaw to the respective bracket in abutting relationship to the adjacent bracket leg to move therewith, the jaws having semi-circular rod receiving recesses, the holder having oppositely

Abstract: A well drilling assembly including a platform adapted to support a person while drilling a well therebeneath through an opening in the platform includes a clamp assembly carried by the platform and mounted for rotation with respect thereto. The clamp assembly includes a pair of open jaws disposed in confronting relatively movable relation and with respect to each other for engaging and for readily releasing a drilling stem so as to be able to support a column of drilling sections as new sections are added and also to permit the clamp to rotate while the drilling sections are rotated at a position supported by the clamp to hold the sections in spaced relation from the bottom of the hole being drilled. The method of drilling includes manipulations involved in supporting the sections of pipe spaced from the bottom of the drilled hole while flooding water through the pipe to flush out the opening and also to permit the pipe to be rotatably driven while so held without exerting manual lifting force on the pipe.

Abstract: A clamp is attached to a drill pipe beneath the rotating head when the pipe is pulled from the well. Not only does the clamp hold the rotating head in place, but, also, a ring-like handhold is provided on the clamp for handling the pipe with the drilling head thereon.