US 12,291,934 B2
Actively controlled bailer
Rune Godøy, Sandnes (NO); Bård Marius Johansen, Ranheim (NO); Morten Eidem, Trondheim (NO); and Gjermund Grimsbo, Trondheim (NO)
Assigned to EQUINOR ENERGY AS, Stavanger (NO)
Appl. No. 17/780,921
Filed by Equinor Energy AS, Stavanger (NO)
PCT Filed Nov. 27, 2020, PCT No. PCT/NO2020/050293
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/107785, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 1917501 (GB), filed on Nov. 29, 2019; and application No. 2001171 (GB), filed on Jan. 28, 2020.
Prior Publication US 2022/0412178 A1, Dec. 29, 2022
Int. Cl. E21B 27/02 (2006.01); E21B 33/13 (2006.01)
CPC E21B 27/02 (2013.01) [E21B 33/13 (2013.01); E21B 2200/05 (2020.05)] 16 Claims
OG exemplary drawing
 
1. A container device for transporting and releasing a plugging material into a well, the container device comprising:
a longitudinal chamber for containing the plugging material, the chamber comprising a tubular wall extending in a longitudinal direction and at least one opening for releasing the plugging material from the chamber;
a lower seal extending across the opening and closing the chamber in a closed configuration;
an upper seal, wherein the upper seal, the lower seal and part of the tubular wall of the longitudinal chamber are arranged to enclose the plugging material in use;
a pressure application mechanism provided at an upper portion of the container device for pressurising at least part of the device and expelling the plugging material; and
a connector provided at the upper portion of the container device for attaching the container device to an elongate member for lowering into a wellbore,
wherein the pressure application mechanism comprises said upper seal, and further comprises a connection to the lower seal, and wherein the lower seal is connected to a plug configured to be set against a casing or tubular outside the container device.