Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
October 4, 2022
Patent Application Number
16897794
Date Filed
June 10, 2020
Patent Citations
Patent Primary Examiner
CPC Code
A lost circulation system and a method for reducing losses of drilling fluid in a lost circulation zone of a wellbore. The lost circulation system includes a sheet of lost circulation fabric and particles of a second lost circulation material. The sheet of lost circulation fabric is a material whose structure and composition limit a flow of fluids, particularly drilling fluid, through the sheet. The sheet of lost circulation material has a maximum thickness of 1 millimeter, a length of one foot to one thousand feet, and a width of one inch to twenty inches. The sheet of the lost circulation fabric has holes extending through the sheet.
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