US 12,146,375 B1
Monitoring casing annulus
Vincent Chatelet, Clamart (FR); Jean-Christophe Auchere, Clamart (FR); Dominique Sabina, Clamart (FR); Christophe Michaud, Clamart (FR); and Fabio Cecconi, Clamart (FR)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 18/715,122
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Apr. 28, 2023, PCT No. PCT/US2023/020313
§ 371(c)(1), (2) Date May 31, 2024,
PCT Pub. No. WO2023/212270, PCT Pub. Date Nov. 2, 2023.
Claims priority of provisional application 63/363,719, filed on Apr. 28, 2022.
Int. Cl. E21B 47/06 (2012.01); E21B 23/06 (2006.01); E21B 29/02 (2006.01); E21B 33/12 (2006.01)
CPC E21B 23/06 (2013.01) [E21B 29/02 (2013.01); E21B 33/12 (2013.01); E21B 47/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a straddle packer for use within a wellbore, wherein the straddle packer comprises:
a tubular body comprising a first bore and a second bore;
a first sealing element configured to seal against an inner surface of a casing installed within the wellbore;
a second sealing element configured to seal against the inner surface of the casing, wherein the second bore is located between the first sealing element and the second sealing element; and
an obstruction disposed in association with the tubular body, wherein the obstruction is movable between a first position in which the obstruction opens the second bore and a second position in which the obstruction closes the second bore; and
a sensor sub configured for connection within a downhole pipe string, wherein the sensor sub comprises:
a sensor; and
a sub body carrying the sensor and configured to engage the straddle packer, wherein the sub body comprises:
a first connector configured for connection with a first portion of the downhole pipe string:
a second connector configured for connection with a second portion of the downhole pipe string;
a third bore extending between the first connector and the second connector, wherein the third bore is configured to fluidly connect the first portion of the downhole pipe string and the second portion of the downhole pipe string;
an outer surface; and
a fourth bore extending between the outer surface of the sub body and the sensor.