Patent application number | Description | Published |
20110083857 | REPEATABLE, COMPRESSION SET DOWNHOLE BYPASS VALVE - A bypass valve for use in tubing string which can be repeatedly opened and closed to selectively provide bypass fluid flow between the interior of the tubing string and the annulus to assist in flowing debris. The valve uses hardened valve elements which can be opened and closed while flowing fluids under pressure through the tubing string. The valve is actuated by placing the tubing string in a sufficient weight down condition to operate the valve. A trigger is provided to prevent unintended actuation of the bypass valve during use. | 04-14-2011 |
20110203809 | WELLBORE BYPASS TOOL AND RELATED METHODS OF USE - Disclosed is a bypass tool for connection in a tubing string suspended in a subterranean location in a wellbore. The bypass tool has a tubular body for connection to a tubing string with ports in the body wall to inject fluid into the annulus, surrounding the tubing string. In some applications, nozzles are placed in the ports to create fluid jets which can be utilized, for example, for cleaning a subsea BOP. In other applications, fluids are injected into the annulus to assist circulation. An axially shiftable sleeve is mounted in the body's internal bore and acts as a valve to open and block flow through the ports. Spring-loaded detents in the body engage openings in the sleeve to lock the sleeve against axial movement. The detents extend into the sleeve to be engaged by an actuator ball pumped down the tubing string to the bypass tool. In operation, the bypass tool is run into the wellbore in the closed position with the sleeve closing the ports in the mandrel. When bypass flow is desired, an actuation ball is pumped down the wellbore to the bypass tool. The ball engages a seat in the sleeve to block flow down the tubing string. The ball also engages and depresses the detents, unlocking the sleeve to shift axially down the wellbore to the bypass position where ports in the sleeve align with ports in the mandrel to permit flow through the ports. To return the bypass tool to the closed position, a second ball of the same diameter as the first ball is pumped down the well to abut the first ball and engage and depress the detents to allow the sleeve to shift to a closed position. In this closed position, flow through the tubing string is reopened by shifting the ball-seat assembly to an enlarged area of the mandrel bore where fluid is free to flow around the ball seat. | 08-25-2011 |
20110240313 | RESETTABLE DOWNHOLE TORQUE LIMITER AND RELATED METHODS OF USE - Disclosed is a torque limiter having driver mandrel and driven axially aligned mandrels, a piston movable into and out of an engaged position wherein the driver and driven mandrels are coupled together to transmit torque there between. Hydraulically locking the movable piston in an engaged position. Disengaging the hydraulic lock when during rotation when a specified torque magnitude is exceeded to allow relative rotation between the mandrels. Resetting the torque limiter by hydraulically locking the piston in the engaging position when relative rotation ceases or is reduced. | 10-06-2011 |
20120118577 | WELLBORE CLEANOUT TOOL - A well tool ( | 05-17-2012 |
20120292047 | WELLBORE FILTER SCREEN AND RELATED METHODS OF USE - Disclosed is a downhole well filter ( | 11-22-2012 |
20120298369 | Differential Pressure Wellbore Tool and Related Methods of Use - Disclosed is a power head for connection in a tubing string suspended in a subterranean location in a wellbore for use in methods removing debris from the wellbore. When the power head is in the closed position, well fluids pumped down the tubing string will flow through the power head. When the power head is moved to the open position by dropping a actuator ball onto a seat in the power head, the power head creates flow down along the annulus to circulate debris laden well fluids into a catch apparatus such as a catch basket or screen. In the open position, nozzles and the eductor create the reverse flow. | 11-29-2012 |
20130025865 | WELLBORE KNOCK-OUT CHAMBER AND RELATED METHODS OF USE - Disclosed is a downhole knock-out tool ( | 01-31-2013 |
20140060856 | RESETTABLE DOWNHOLE TORQUE LIMITER AND RELATED METHODS OF USE - Disclosed is a torque limiter having driver mandrel and driven axially aligned mandrels, a piston movable into and out of an engaged position wherein the driver and driven mandrels are coupled together to transmit torque there between. Hydraulically locking the movable piston in an engaged position. Disengaging the hydraulic lock when during rotation when a specified torque magnitude is exceeded to allow relative rotation between the mandrels. Resetting the torque limiter by hydraulically locking the piston in the engaging position when relative rotation ceases or is reduced. | 03-06-2014 |