摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis. A backpressure valve is arranged in the flowbore. The backpressure valve includes a flapper valve including a first side and an opposing second side pivotally mounted to the inner surface to selectively extend across the flowbore and a locking system including a spring clip mounted to the inner surface. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface, and a second position, wherein the flapper valve is pivoted away from the flowbore and locked open by the spring clip such that the first side forms part of the flowbore.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis and a backpressure valve arranged in the flowbore. The backpressure valve includes a flapper valve including a hinge end, a cantilevered end, a first side and an opposing second side pivotally mounted to the inner surface at the hinge end to selectively extend across the flowbore, and a locking system mounted to the inner surface adjacent to the hinge end of the flapper valve in the flowbore. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface between an open configuration and a closed configuration, and a second position, wherein the hinge end of the flapper valve activates the locking system to lock the flapper valve in the open configuration.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve cartridge arranged in the flowbore. The backpressure valve cartridge includes a valve seat and a flapper valve pivotally mounted relative to the valve seat. The backpressure valve cartridge is shiftable along the longitudinal axis to shift the flapper valve between a first position, wherein the flapper valve rests on the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve arranged in the flowbore. The backpressure valve includes a flapper valve including a first side and an opposing second side pivotally mounted to the inner surface to selectively extend across the flowbore, and a locking system mounted to the inner surface in the flowbore and selectively engageable with the flapper valve. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface, and a second position, wherein the flapper valve is pivoted away from the flowbore and locked open by the locking system such that the first side forms part of the flowbore.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve cartridge arranged in the flowbore. The backpressure valve cartridge includes a valve seat and a flapper valve pivotally mounted relative to the valve seat. The backpressure valve cartridge is shiftable along the longitudinal axis to shift the flapper valve between a first position, wherein the flapper valve rests on the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis. A backpressure valve is arranged in the flowbore. The backpressure valve includes a flapper valve including a first side and an opposing second side pivotally mounted to the inner surface to selectively extend across the flowbore and a locking system including a spring clip mounted to the inner surface. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface, and a second position, wherein the flapper valve is pivoted away from the flowbore and locked open by the spring clip such that the first side forms part of the flowbore.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve arranged in the flowbore. The backpressure valve includes a flapper valve having a first side and an opposing second side pivotally mounted to the inner surface to selectively extend across the flowbore and a locking system mounted to the inner surface in the flowbore and snap-fittingly engageable with the flapper valve. The flapper valve is pivotable between a first position, wherein the flapper valve is free to pivot relative to the inner surface, and a second position, wherein the flapper valve is pivoted away from the flowbore and locked open by the locking system such that the first side forms part of the flowbore.
摘要:
In one aspect, a method of performing an operation in a wellbore is disclosed that in one embodiment may include: placing a first device at a first location in the wellbore, wherein the first device includes a plurality of circumferentially placed tags at known orientations in the wellbore, conveying a second device in the wellbore, the second device including a sensor that provides signals in response to detecting signals from each of the tags in the first device, determining from the signals from the sensor orientation of the second device in the wellbore. In another aspect the method may include a plurality of axially placed tags on a first device and the sensor on a second device, wherein the sensor provides signals when it passes proximate each of the axially spaced tags and determining from the sensor signals location of the second device relative to the first device.
摘要:
An apparatus and method for driving a ramped drive assembly longitudinally, to drive a penetrator transversely, to cause the penetrator to penetrate and withdraw from a downhole tubular element. An anchor holds the tubing punch assembly in place in the downhole tubular element. A double piston assembly drives the drive assembly hydraulically in the downhole direction, thereby driving the ramp downhole, to force the penetrator outwardly to penetrate the tubular element. Thereafter, pulling uphole on the work string shears a shear sleeve, separating the housing of the tubing punch assembly from the work string. Further pulling on the work string partially withdraws the ramped drive assembly from the tubing punch assembly, thereby withdrawing the penetrator into the tubing punch assembly.
摘要:
A downhole tool includes a tubular having an outer surface and an inner surface defining a flowbore having a longitudinal axis, and a backpressure valve cartridge arranged in the flowbore. The backpressure valve cartridge includes a passage, a valve seat arranged in the passage, a flapper valve pivotally mounted relative to the valve seat in the passage, and a piston member configured to shift the flapper valve between a first position, wherein the flapper valve is free to pivot relative to the valve seat, and a second position, wherein the flapper valve is pivoted away from the valve seat and maintained in an open configuration.