Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Stephen Allen Yeldell0
Frank Vinicio Acosta0
Kevin Wendell Ardoin0
Lonnie Carl Helms0
Min Mark Yuan0
Rajesh Parameshwaraiah0
Date of Patent
April 5, 2022
0Patent Application Number
166065840
Date Filed
December 21, 2018
0Patent Citations
Patent Citations Received
Patent Primary Examiner
CPC Code
A buoyancy assist tool has an outer case and a sleeve disposed in the outer case. The sleeve is movable from first to second positions in the outer case. A permeable membrane is attached to the movable sleeve at a lower end thereof. A rupture disk is mounted in the outer case. Fluid flow through the permeable membrane detaches the sleeve from the outer case and moves the sleeve from the first to the second position. In the second position, the sleeve creates an open bore for the passage of downhole tools therethrough.
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