Abstract:
A hydraulic motor for use in a drill string is disclosed. The motor incorporates a closed hydraulic system having a piston exposed to variations in mud flow pressure. The piston reciprocates and by its movement pumps hydraulic fluid in a closed hydraulic circuit. A motor is driven. The motor is supported on a hollow drive shaft. The drive shaft extends through the tool. It is hollow to permit mud flow to continue to the drill bit attached therebelow. The motor is attached to the exterior and rotates the shaft. The hydraulic fluid from the motor is returned to a reservoir and flows in a closed circuit from it. All of the equipment is in a closed elongate housing threading into the drill string.
Abstract:
Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.
Abstract:
Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.
Abstract:
System for laying pipe, wherein elongate flat sheets of metal are formed and welded to form pipe and wherein the pipe may be discharged for laying in a vertical direction or in a horizontal direction, or in any angular direction therebetween. The apparatus is mounted on a support vehicle or structure capable of traveling over water or land from which the pipe is discharged for laying.
Abstract:
A multicylinder, improved mud pump is disclosed, the preferred embodiment incorporating a hydraulically powered piston in a cylinder which connects with a piston rod which, in turn, drives a second piston in a cylinder adapted to pump mud. The first piston is driven by fluid from a rotary distribution valve, with the distribution valve being driven independently from the movement of the piston; also, the piston can be driven on its return stroke by entrapped fluid routed from a second cylinder, or the piston can be driven on its return stroke by fluid routed from the valve. Additinally novel valving means is disclosed for the rotary distribution valve and novel hydraulic drive circuitry is disclosed, also novel mud pumping valve and piston arrangements are disclosed.
Abstract:
Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.
Abstract:
A means to transmit recorded data through a fluid medium is disclosed. The preferred embodiment incorporates a positive displacement fluid pump having constant pressure pumping means connected to pump fluid through a drill string for drilling oil wells. A variable orifice means is located down hole in the drill string which changes orifice diameter responsive to sensed data. The pumped fluid is displaced by a pumping piston driven by a second piston powered by constant pressure hydraulic fluid. The pumped fluid is held at a constant pressure so that a change in orifice diameter will change the volume of the flow through the orifice and likewise change the volume of flow of the hydraulic drive fluid. The flow rate of the hydraulic drive fluid is thus gauged to thereby record the orifice diameter change and in turn receive signals transmitted by the change in orifice diameter.
Abstract:
A multicylinder, hydraulic driven, dual arranged mud pump is disclosed. The preferred embodiment consist of dual mud pumping units arranged to be selectively operated as individual pumps, as two pumps whose output flow is in parallel, or as two pumps whose output flow is in series. Each mud pumping unit is comprised of plural pumping assemblies with each assembly consisting of a pair of separate end to end cylinders, one cylinder being arranged to be driven by a second cylinder with the one cylinder further being arranged to pump mud and the second cylinder being arranged to be reciprocally driven in a sequential manner by pressurized hydraulic fluid. The pressurized hydraulic fluid is supplied to all operating second cylinders from common pressurized fluid source with the pressurized fluid being distributed to and returned from the second cylinder by an independently operated distribution valve, the volume of pressurized fluid flow being employed to synchronize the stroke and control the stroke length of the second cylinder which in turn controls the volume of pumped mud.
Abstract:
Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.
Abstract:
Pipe handling apparatus for pipe laying barges, sometimes called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.