Patent ID: 11952873
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A washpipe free feature, comprising:
a housing defining a chamber having a bypass portion and a securing portion, wherein the housing comprises a first bore to put the bypass portion of the chamber in fluid communication with an annulus of a wellbore and a second bore to put the bypass portion in fluid communication with a central bore of a downhole tubular;
a magnet secured to an inner surface of the bypass portion of the chamber;
a ball disposed within the bypass portion of the chamber, wherein the ball comprises a ferromagnetic metal;
a piston disposed within the chamber, wherein the piston is slidable between a run-in position and an open position, wherein the piston comprises a stepped diameter with a distal end of the piston having a first diameter and a proximal end of the piston having a second diameter, wherein the first diameter is smaller than the second diameter, wherein a distal end of the piston extends through and protrudes from a central bore of the magnet to blocks the ball from contacting the magnet in the run-in position such that the ball is moveable to plug the first bore in response to fluid flow from the tubular toward the annulus, and wherein the distal end is configured to retract into the central bore of the magnet in the open position;
at least one shear feature configured to hold the piston in the run-in position, wherein the at least one shear feature is configured to shear in response to a predetermined threshold pressure, wherein a pressure differential between the securing portion and the bypass portion drives the piston to slides from the run-in position to the open position to permit the ball to move into contact with the magnet, and wherein the magnet is configured to hold the ball out of a flow path between the first bore and the second bore in the bypass portion of the chamber; and
a locking feature configured to secure the piston in the open position.