US 11,806,725 B2
System and method for removing debris from a drilling fluid
James Edward Atkins, Aberdeen (GB)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/905,665
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Mar. 8, 2021, PCT No. PCT/US2021/021284
§ 371(c)(1), (2) Date Sep. 6, 2022,
PCT Pub. No. WO2021/178943, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 2003288 (GB), filed on Mar. 6, 2020.
Prior Publication US 2023/0114032 A1, Apr. 13, 2023
Int. Cl. B03C 1/02 (2006.01); E21B 21/00 (2006.01)
CPC B03C 1/02 (2013.01) [E21B 21/002 (2013.01); E21B 2200/06 (2020.05)] 20 Claims
OG exemplary drawing
 
1. An internal assembly for a tool, the internal assembly comprising:
a retainer that at least partially defines an axial bore, the retainer further defining a port providing a path of fluid communication from an exterior of the retainer to the bore;
an electromagnet coupled to the retainer, the electromagnet configured to actuate between an on state and an off state and to attract magnetic debris in a fluid when in the on state;
a sleeve configured to be positioned downstream from the retainer, the sleeve at least partially defining the bore, the sleeve further defining a port that provides a path of fluid communication from the bore to an exterior of the sleeve, and the sleeve being configured to actuate from a first position to a second position; and
a valve configured to be positioned downstream from the port in the sleeve and to actuate from a first position to a second position.