Pressure testing valve and method of using the same

Abstract

A wellbore system comprising a casing, and a pressure testing valve incorporated within the casing and comprising a sleeve positioned within a housing and transitional from a first to a second position, and from the second to a third position, wherein, when the sleeve is in the first and second positions, the sleeve blocks a route of fluid communication via one or more housing ports and, when the sleeve is in the third position the sleeve does not block fluid communication, wherein the pressure testing valve is configured such that a force in the direction of the second position to the sleeve causes the sleeve to transition to the second position, and wherein the pressure testing valve is configured such that a reduction of the force in the direction of the second position to the sleeve causes the sleeve to transition to the third position.

Description

Background technique [0001] Hydrocarbon production wells are often stimulated by a fluid fracturing operation in which a service fluid, such as a fracturing fluid or penetrating fluid, is applied at a rate sufficient to create or enhance at least one fracture in the formation. The portion of the formation that is introduced into the formation under pressure and penetrated by the wellbore. Such formation stimulating treatments may increase hydrocarbon production from the well. [0002] When preparing a wellbore for oil and gas production, a string of casing is typically cast in the wellbore with concrete. It is often desirable to cast the casing in the wellbore in a number of separate steps. Furthermore, excitation equipment can be integrated in the casing string for the entire production process. Casing and excitation equipment may be set into the wellbore to a predetermined depth. Individual "zones" in the formation may be isolated by the operation of one or more packers ...

AI Technical Summary

Problems solved by technology

Traditionally, the methods and / or tools used to provide a fluid path out of the casing string after performance of a pressure test are configured to open once the pressure level achieved during the pressure test is exceeded, thereby limiting the pressure achieved

For example, due to the need for casing and / or other individual wellbore service equipment components to be subjected to pressures approaching or exceeding those casing strings and / or wellbore service components likely to be rated, such excessive pressure required to open the casing string Pressure ratings that jeopardize the structural integrity of the casing string and / or excitation equipment

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