# US 2014/0196892 A1 · Interruptible Pressure Testing Valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196892 A1 - Document ID: US20140196892A1 - Status: Published application - Kind: A1 - Application number: 13/742,869 - Filed: 2013-01-16 - Published: 2014-07-17 - Earliest claimed: 2013-01-16 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Kendall Lee PACEY; Kevin Thomas BERSCHEIDT; Matthew Todd HOWELL - Web page: https://patentgrep.com/patent/US20140196892A1 ## CPC - E21B 34/103: {with a shear pin} - E21B 34/063: {Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence)} - E21B 47/117: Detecting leaks, e.g. from tubing, by pressure testing - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A wellbore servicing system comprising a pressure testing valve incorporated within a casing string and comprising a housing comprising one or more ports and an axial flowbore, a sliding sleeve, wherein the sliding sleeve is positioned within the housing and transitional from a first position to a second position through a sliding sleeve stroke, wherein, in the first position, the sliding sleeve blocks a route of fluid communication via the one or more ports and, in the second 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 predetermined pressure to the axial flowbore for a predetermined duration causes the sliding sleeve to transition from the first position to the second position, wherein the predetermined duration is at least about one minute. ## Claims ### Claim 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; a sliding sleeve, wherein the sliding sleeve is slidably positioned within the housing and transitional from: a first position to a second position through a sliding sleeve stroke; wherein, when the sliding sleeve is in the first position, the sliding sleeve blocks a route of fluid communication via the one or more ports and, when the sliding sleeve is in the second 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 predetermined pressure to the axial flowbore for a predetermined duration causes the sliding sleeve to transition from the first position to the second position, wherein the predetermined duration is at least about one minute. ### Claim 2 (depends on 1) The wellbore servicing system of claim 1, wherein the predetermined pressure comprises a pressure threshold. ### Claim 3 (depends on 2) The wellbore servicing system of claim 2, wherein the predetermined pressure varies over the predetermined duration. ### Claim 4 (depends on 1) The wellbore servicing system of claim 1, wherein the pressure testing valve comprises one or more frangible members. ### Claim 5 (depends on 4) The wellbore servicing system of claim 4, wherein the one or more frangible members are configured to restrain the sliding sleeve in the first position. ### Claim 6 (depends on 1) The wellbore servicing system of claim 1, where the pressure testing valve comprises a fluid chamber, wherein the fluid chamber is not fluidicly exposed to the axial flowbore. ### Claim 7 (depends on 6) The wellbore servicing system of claim 6, wherein the sliding sleeve comprises a collar, wherein the collar is configured to divide the fluid chamber into a first chamber portion and a second chamber portion across at least a first portion of the sliding sleeve stroke. ### Claim 8 (depends on 7) The wellbore servicing system of claim 7, wherein the collar comprises a check valve, wherein the check valve is configured to control fluid communication from the first chamber portion to the second chamber portion over at least the first portion of the sliding sleeve stroke. ### Claim 9 (depends on 2) The wellbore servicing system of claim 2, wherein the pressure threshold is at least about 8,000 p.s.i. ### Claim 10 (depends on 2) The wellbore servicing system of claim 2, wherein the pressure threshold is at least about 10,000 p.s.i. ### Claim 11 (depends on 3) The wellbore servicing system of claim 3, wherein the predetermined duration is from about 15 minutes to about 60 minutes. ### Claim 12 (depends on 3) The wellbore servicing system of claim 3, wherein the predetermined duration comprises an accumulation of one or more subintervals of time. ### Claim 13 A wellbore servicing method comprising: positioning casing string having a pressure testing valve incorporated therein within a wellbore penetrating the subterranean formation, wherein the pressure testing valve comprises: a housing comprising one or more ports and an axial flowbore; and a sliding sleeve, wherein the sliding sleeve is slidably positioned within the housing, wherein the sliding sleeve is configured to block a route of fluid communication via one or more ports when the casing string is positioned within the wellbore; applying a fluid pressure of at least a pressure threshold to the axial flowbore, wherein, upon application of the fluid pressure of at least the pressure threshold, the sliding sleeve continues to block the route of fluid communication via the one or more ports; and continuing to apply fluid pressure to the axial flowbore for a predetermined duration of time, wherein the predetermined duration is at least about one minute, and wherein, following the predetermined duration of time, the sliding sleeve allows fluid communication via one or more ports of the housing. ### Claim 14 (depends on 13) The method of claim 13, wherein the sliding sleeve is initially retained by one or more frangible members prior to the application of fluid pressure of at least the upper threshold, wherein the application of fluid pressure of at least the pressure threshold causes the one or more frangible members to fail. ### Claim 15 (depends on 13) The method of claim 13, wherein the pressure threshold is at least about 8,000 p.s.i. ### Claim 16 (depends on 13) The method of claim 13, wherein the pressure threshold is at least about 10,000 p.s.i. ### Claim 17 (depends on 13) The method of claim 13, wherein the predetermined duration is from about 15 minutes to about 60 minutes. ### Claim 18 (depends on 13) The method of claim 13, further comprising communicating a fluid via the one or more ports. ### Claim 19 A wellbore servicing method comprising: pressure testing at a first pressure a tubing string positioned within a wellbore penetrating a subterranean formation, wherein the pressure test comprises an application of pressure for a predetermined duration, wherein during at least a portion of the predetermined duration, the application of pressure is of at least a pressure threshold, and wherein a pressure substantially exceeding the pressure threshold is not applied to the casing string during the pressure test; following the predetermined duration, flowing a fluid down the tubing string and into the wellbore or the subterranean formation. ### Claim 20 (depends on 19) The method of claim 19, wherein flowing the fluid down the tubing string further comprises flowing an obturating member down the tubing string, landing the obturating member on a landing structure associated with a wellbore tool, and applying a hydraulic force to the wellbore tool via the landed obturating member to configure the wellbore tool to perform a wellbore service.