Invention Grant
- Patent Title: NMR characterization and monitoring of drilling fluids
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Application No.: US16995325Application Date: 2020-08-17
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Publication No.: US11543556B2Publication Date: 2023-01-03
- Inventor: Yiqiao Tang , Reda Karoum , Yi-Qiao Song , Shin Utsuzawa , Stephen Cliffe
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Main IPC: G01V3/32
- IPC: G01V3/32 ; G01N24/08 ; E21B49/08 ; G01R33/44
Abstract:
A method for evaluating drilling fluid includes making an NMR measurement of a sample of the drilling fluid and inverting the measurements to compute a corresponding T1T2 plot. The T1T2 plot is in turn evaluated to characterize the drilling fluid. In one embodiment, a stability index of the fluid may be computed from multiple NMR measurements made while aging the sample.
Public/Granted literature
- US11340377B2 NMR characterization and monitoring of drilling fluids Public/Granted day:2022-05-24
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