Abstract: A seal and clamping system for a wellhead assembly having a housing with a first end configured to seal to the outer adapter surface above an upper outward-projecting shoulder on the wellhead assembly, a second end configured to seal to the tubing head below a lower outward-projecting shoulder, and a clamping system configured to hold the housing in position about the wellhead assembly so as to ensure sealing contact at the upper end and lower end with the wellhead assembly.

Abstract: A tool for cleaning debris from a wellbore comprises a rotational portion and a stationary portion. The rotational portion is configured to be coupled to a workstring disposed in the wellbore such that rotation of the workstring rotates the rotational portion. The stationary portion at least partially surrounds the rotational portion. The stational portion is configured to remain stationary when the rotational portion and the workstring are rotated. The rotational portion and the stationary portion are shaped and configured such that when the workstring is at least partially disposed in well fluid present in the wellbore, rotation of the rotational portion causes the movement of well fluid such that well fluid flows in the workstring, thereby carrying debris from the wellbore in to the workstring.

Abstract: A pressure bleed-off system. The system includes a fluid bypass line having an inlet and an opposing outlet, wherein the inlet is in fluid communication with a high pressure frac line for a hydraulic fracturing operation. The system also includes a high pressure transducer located proximate the fluid inlet, a first plug valve residing along the fluid bypass line, and a first electric actuator residing on the first plug valve. The actuator is configured to rotate the first plug valve between close and open positions in response to command signals from a controller. The controller, in turn, sends the command signals in response to control signals delivered by an operator, remotely. Preferably, the command signals are wireless signals sent from outside of the red zone. The system may also include a second plug valve along the bypass line.

Abstract: A tool for cleaning debris from a wellbore comprises a rotational portion and a stationary portion. The rotational portion is configured to be coupled to a workstring disposed in the wellbore such that rotation of the workstring rotates the rotational portion. The stationary portion at least partially surrounds the rotational portion. The stationary portion is configured to remain stationary when the rotational portion and the workstring are rotated. The rotational portion and the stationary portion are shaped and configured such that, when the workstring is at least partially disposed in well fluid present in the wellbore, rotation of the rotational portion causes movement of well fluid such that well fluid flows into the workstring, thereby carrying debris from the wellbore into the workstring.

Abstract: A tool for running a casing string assembly into a wellbore includes a degradable plug assembly that temporarily isolates light fluid trapped in a lower portion of the casing string from heavier fluid in the upper portion of the casing string, thereby reducing the horizontal weight of the casing string by an amount sufficient to overcome a drag force. After the casing string is landed at a final location in the wellbore, fluid is introduced to the degradable plug assembly to degrade the plug and clear the axial passageway of the casing string so that tools or other equipment can pass therethrough.

Abstract: A plunger tool and method relating thereto is designed to remove and insert plungers of a reciprocating pump such as during maintenance and other disassembly operations. The tool has a guide which receives and supports the plunger after removal from, and before reinsertion into, the pump. The tool also has a rack and pinion actuator for moving the plunger.

Abstract: A tool for running a casing string assembly into a wellbore includes a degradable plug assembly that temporarily isolates light fluid trapped in a lower portion of the casing string from heavier fluid in the upper portion of the casing string, thereby reducing the horizontal weight of the casing string by an amount sufficient to overcome a drag force. After the casing string is landed at a final location in the wellbore, fluid is introduced to the degradable plug assembly to degrade the plug and clear the axial passageway of the casing string so that tools or other equipment can pass therethrough.

Abstract: A tool for cleaning debris from a wellbore comprises a rotational portion and a stationary portion. The rotational portion is configured to be coupled to a workstring disposed in the wellbore such that rotation of the workstring rotates the rotational portion. The stationary portion at least partially surrounds the rotational portion. The stationary portion is configured to remain stationary when the rotational portion and the workstring are rotated. The rotational portion and the stationary portion are shaped and configured such that, when the workstring is at least partially disposed in well fluid present in the wellbore, rotation of the rotational portion causes movement of well fluid such that well fluid flows into the workstring, thereby carrying debris from the wellbore into the workstring.

Abstract: A float collar tool for running a casing string assembly into a wellbore includes a non-fragmenting rupture disc that temporarily isolates light fluid trapped in a lower portion of the casing string from heavier fluid in the upper portion of the casing string, thereby reducing the horizontal weight of the casing string by an amount sufficient to overcome a drag force. After the casing string is landed at a final location in the wellbore, the rupture disc is burst by increasing fluid pressure in the upper portion of the casing string. The increased pressure activates a piston that then moves the burst rupture disc into a protective region of the tool so that the inside diameter of the casing string is substantially restored.

Abstract: A rotor catch assembly for connection in a workstring in a wellbore is provided. The rotor catch assembly is connected to a downhole motor assembly that includes a rotor that is driven by a fluid. In the normal operating state of the rotor catch assembly, fluid flows through the catch assembly and causes the rotor to rotate. In this state, the catch assembly generates pressure pulses in the fluid in the workstring to facilitate advancement of the workstring in the wellbore. In the event of a failure of a mechanical connection in the motor assembly, the rotor catch assembly shifts to a catch-activated state in which the motor assembly is disabled.

Abstract: An apparatus for at least partially sealing an annulus of a wellbore comprises a hollow mandrel pipe adapted to attach to a tubing string, and a cylindrical cage surrounding and attached to an exterior length of the mandrel pipe, the cylindrical cage having a plurality of generally lengthwise tortuous path apertures generally parallel with one another between the two open ends of the mandrel pipe, the plurality of generally lengthwise tortuous path apertures defining a plurality of bow springs therebetween, the plurality of bow springs bowed outward from the mandrel pipe.

Abstract: A driveshaft assembly comprises a cylindrical upper member, with one end of the upper member being connected to the rotor and an other end of the upper member having a plurality of torque transmitting profiles. An elongated central member has two ends, with each end having a plurality of torque transmitting profiles. A seat is retained within a central bore of the upper member, the seat having a curved end. A catch is retained within the central member, the catch having a curved end. The upper member transfers torque from the rotor to the central member via the torque transmitting profiles of the upper member and the torque transmitting profiles of the central member, and the curved end of the seat contacts the curved end of the catch while maintaining a gap between the other end of the upper member and the adjacent end of the central member.

Abstract: A lateral propulsion apparatus positioned onto a drillstring comprising a tubular housing, venturi nozzles, an impeller, and flow ports. The apparatus utilizes both the venturi effect as well as rotational forces to cause wellbore fluid to travel from an area of high pressure near a lower end toward an area of lower pressure near an upper end urging the apparatus further into a non-vertical wellbore.

Abstract: An apparatus for creating vibrations in a pipe string is disclosed. The device comprises a fluid pump which pumps fluid within a first fluid bore and is connected to the pipe string. A hydraulic pump pumps fluid within a second fluid bore and a movable plunger disposed between the first fluid bore and the second fluid bore intermittently opens and closes access to a tank based on changes to a pressure of the fluid pump. The tank for collecting at least a portion of the fluid is connected to the apparatus via the first fluid bore, and the movement of the plunger is configured to generate vibrations within the pipe string by altering the amount of fluid allowed to flow to the tank.

Abstract: A pressure actuated jarring apparatus includes a tubular housing, a piston, a spring element, and a seat. The tubular housing has a passage therethrough extending from an upper end to a lower end. The piston is disposed within the central bore and is movable axially between an inactivated state and an activated state. The spring element is configured to store energy to drive the piston from the activated state. The seat is coupled to the piston such that when a plug is seated in an orifice of the seat fluid is prevented from flowing through the orifice. The jarring device is fired by increasing pressure in the passage until the plug is forced through the seat, thereby releasing the energy in the spring element and driving the piston from the activated state so that it impacts an abutment and generates a jarring force.

Abstract: A venturi jet basket assembly adapted to be coupled to a tubing that extends into a wellbore includes a body and a jet nozzle subassembly. The body includes a wall that defines a passageway that extends longitudinally through the body. The body also includes an opening extending through the wall and into the passageway. The wall also includes a flute formed in an outer surface of the wall of the body. The flute is in fluid communication with the opening. The jet nozzle subassembly is disposed within the passageway and includes a jet nozzle. The jet nozzle is arranged to direct fluid received through the tubing through the opening and into the flute such that the fluid is guided into the wellbore by the flute.

Abstract: A pressure activated cyclical valve assembly includes a first sub, a second sub, a piston, and a biasing member. The first sub has a first passageway therethrough. The second sub is coupled to the first sub and has a second passageway therethrough. The piston is positioned within the second passageway and is shiftable between a deactivated position in which a bypass port is closed and an activated position in which the bypass port is open. The piston has a piston orifice and the first passageway is in fluid communication with the second passageway through the piston orifice. The biasing member exerts a force against the piston to maintain the piston in the deactivated position. The piston orifice is sized to restrict the flow of fluid therethrough such that the piston can be shifted between the deactivated and activated positions by changing flowrate of fluid in the first passageway.

Abstract: An apparatus for dampening vibrations in a drill string has a tubular housing with an upper sub connected to a first end, having a threaded connection for engagement with the pipe or drillstring. A piston is positioned in the bore of the tubular housing and longitudinally movable in the bore; the dimensions of the piston and bore permit limited fluid flow around the piston. Connected to the piston and extending out of the second end of the housing is a bottom sub. Mating and engaging profiles in the tubular housing and lower sub allow longitudinal movement between them, but no relative rotation. A spring member, which may be a mechanical spring, an elastomeric member, a compressed gas, or some combination thereof, biases the piston and lower sub out of the tubular housing.

Abstract: A bypass tool has a piston movable within the bore of a central housing. A control slot on an exterior wall of the piston engages a slot pin in the housing. Longitudinal movement of the piston is downward, in response to fluid pressure exerted on a ball seated on a ball seat on the piston; and spring biased upward. The control slot and slot pin rotate the piston as it moves longitudinally between a first, upper position in which bypass ports in the housing are closed, and a second, lower position in which the bypass ports are open. An intermediate longitudinal position has the ports closed, and permits pressuring up on a ball to force it through the ball seat and reset the tool in the flow through position. The ball and/or ball seat may be of resilient material to permit passage of the ball through the seat.