Invention Grant
- Patent Title: Mitigation of high frequency coupled vibrations in PDC bits using in-cone depth of cut controllers
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Application No.: US17074273Application Date: 2020-10-19
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Publication No.: US11748531B2Publication Date: 2023-09-05
- Inventor: Shilin Chen , Christopher Charles Propes , Curtis Clifford Lanning , Bradley David Dunbar
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: DeLizio, Peacock, Lewin & Guerra
- Main IPC: G06F30/20
- IPC: G06F30/20 ; E21B10/43 ; E21B47/00 ; E21B10/567

Abstract:
Design parameters for PDC drill bit including in-cone depth of cut controllers (DOCCs) are correlated to instances of coupled vibrations in the axial, lateral, and torsional directions occurring during downhole drilling. Design parameters are quantified by drilling efficiency (DE), average in-cone DOCC contact area, average weight on bit (WOB) taken off by in-cone DOCC, and average torque on bit (TOB) taken off by in-cone DOCC. Design guidelines to mitigate coupled vibrations are generated by correlating design parameter quantifiers and instances of coupled vibrations. Potential drill bit designs are then validated against the generated guidelines in order to mitigate vibration in future drilling runs.
Public/Granted literature
- US20220121790A1 MITIGATION OF HIGH FREQUENCY COUPLED VIBRATIONS IN PDC BITS USING IN-CONE DEPTH OF CUT CONTROLLERS Public/Granted day:2022-04-21
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