Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Min Mark Yuan0
Rajesh Parameshwaraiah0
Byong Jun Kim0
Ishwar Dilip Patil0
Lonnie Carl Helms0
Mayur Narain Ahuja0
Date of Patent
January 25, 2022
0Patent Application Number
167017280
Date Filed
December 3, 2019
0Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier define a buoyancy chamber therebetween. A debris barrier positioned above the removable plug has a plurality of fragments interspersed in a stretchable material and includes a frangible disc.
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