US 11,946,373 B2
Flow control choke with curved interfaces for wellbore drilling operations
Hasib Uddin, Spring, TX (US); Alben D'Silva, Edmonton (CA); and Philip Park Hung Leung, Edmonton (CA)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 15, 2021, as Appl. No. 17/551,523.
Prior Publication US 2023/0184058 A1, Jun. 15, 2023
Int. Cl. E21B 7/06 (2006.01); E21B 4/00 (2006.01); E21B 34/14 (2006.01)
CPC E21B 7/06 (2013.01) [E21B 4/003 (2013.01); E21B 7/067 (2013.01); E21B 7/068 (2013.01); E21B 34/14 (2013.01); E21B 2200/02 (2020.05); E21B 2200/06 (2020.05)] 18 Claims
OG exemplary drawing
 
1. A drilling system usable to drill a borehole, the drilling system comprising:
a first housing defining a main fluid flow path;
a second housing defining a bypass flow path toward an annulus of a wellbore; and
a flow control choke between the first housing and the second housing, the flow control choke including a rotatable section and a stationary section that is stationary relative to the rotatable section, the stationary section having a curved interface with the rotatable section for restricting a flow of a drilling fluid through the bypass flow path, wherein the curved interface of the stationary section has a direction of concavity that is substantially parallel to the main fluid flow path, wherein the rotatable section is axially movable within the bypass flow path to contact the stationary section and to restrict the flow of the drilling fluid through the bypass flow path, and wherein a biasing mechanism is positioned within the bypass flow path to bias the rotatable section into contact with the stationary section.