Flow bypass device and method

摘要

Devices, systems and methods are disclosed for re-directing fluid flow from the interior of tubing placed in a well to the exterior of the tubing by use of selectively actuatable valves operable by engagement of a plug on a plug seat. The devices, systems, and methods disclosed may provide a flowback bypass for the flow of fluids around obstructions in the tubing when those obstructions occur at a predicted location within the tubing. The systems, devices and methods may also include a locking system operable by, among other things, plug and plug seat valves, and such locking system may be used to prevent opening of the flowback bypass until after a predetermined event has occurred.

主权项

1. An apparatus for use in a well for oil, gas, or other hydrocarbons, the apparatus comprising:
a housing with an exterior and an interior, the housing having a passageway therethrough, a first port, and a second port, the first port and second port capable of the connecting the passageway with the exterior of the housing; a plug seat within the housing, the plug seat having an inlet and an outlet; a bypass sleeve within the housing, the bypass sleeve positioned to prevent fluid communication between the passageway and the exterior of the housing through the second port; wherein, the bypass sleeve is moveable within the housing in response to a pressure differential across the plug seat, the pressure differential comprising a higher pressure at the outlet than at the inlet.