Pressure Testing Valve and Method of Using the Same

摘要

A wellbore servicing system comprising a valve comprising a housing comprising ports, and a sleeve slidably positioned within the housing and transitional from a first to a second position to a third position, when the sleeve is in the first position and the second position, the sleeves blocks fluid communication via the ports and, when in the third position the sleeve does not block such fluid communication, wherein application of a fluid pressure transitions the sleeve from the first to the second position, and a reduction in fluid pressure transitions the sleeve from the second to the third position, and a deactivatable locking assembly between the housing and the sliding sleeve and configured such that, when activated, the locking assembly inhibits movement of the sleeve toward the third position, and when deactivated, the locking assembly will not inhibit movement of the sliding sleeve toward the third position.

主权项

1. A wellbore servicing system comprising:
a casing string; and a pressure testing valve, the pressure testing valve incorporated within the casing string and comprising:
a housing comprising one or more ports and an axial flowbore; anda sliding sleeve, wherein the sliding sleeve is slidably positioned within the housing and transitional from:
a first position to a second position, and from the second position to a third position;wherein, when the sliding sleeve is in the first position and the second position, the sliding sleeves blocks a route of fluid communication via the one or more ports and, when the sliding sleeve is in the third position the sliding sleeve does not block the route of fluid communication via the one or more ports;wherein the pressure testing valve is configured such that application of a fluid pressure of at least an upper threshold to the axial flowbore causes the sliding sleeve to transition from the first position to the second position; andwherein the pressure testing valve is configured such that a reduction of the fluid pressure to not more than a lower threshold applied to the axial flowbore causes the sliding sleeve to transition from the second position to the third position; anda deactivatable locking assembly disposed between the housing and the sliding sleeve, wherein the deactivatable locking assembly is configured such that,
when activated, the deactivatable locking assembly will inhibit movement of the sliding sleeve in the direction of the third position, andwhen deactivated, the deactivatable locking assembly will not inhibit movement of the sliding sleeve in the direction of the third position.