Pressure testing valve and method of using the same

摘要

A wellbore system suitable for conducting pressure testing of wellbore equipment. The system comprises a casing and a pressure testing valve incorporated within the casing. The pressure testing valve further comprises a sleeve positioned within a housing and transitional from a first to a second position, and from the second to a third position. When the sleeve is in the first and second positions, the sleeve blocks a route of fluid communication via one or more housing ports. When the sleeve is in the third position the sleeve does not block fluid communication. The pressure testing valve is configured such that the sleeve transitions from the first position to the second position when a force in the direction of the second position is applied to the sleeve. When in the second position, a reduction of the force in the direction of the second position to the sleeve causes the sleeve to transition to 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 in a first direction froma first position to a second position, and in a second direction from the second position to a third position;wherein, when the sliding sleeve is in the first position and the second position, the sliding sleeve 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 force to the sliding sleeve in a first direction causes the sliding sleeve to transition in the first direction from the first position to the second position;wherein the pressure testing valve is configured to remain in the second position until the force in the first direction is reduced to not more than a lower threshold force; andwherein the pressure testing valve is configured to transition in the second direction from the second position to the third position when the force is reduced to not more than the lower threshold force; and wherein the pressure testing valve comprises a locking system comprising a lock and locking groove; and wherein the lock combines with the locking groove to retain the sliding sleeve in the third position.