Invention Grant
- Patent Title: PDC bits with mixed cutter blades
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Application No.: US16185138Application Date: 2018-11-09
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Publication No.: US10650108B2Publication Date: 2020-05-12
- Inventor: Shilin Chen
- 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: Baker Botts L.L.P.
- Main IPC: G06G7/48
- IPC: G06G7/48 ; G06F17/50 ; E21B10/55 ; E21B10/43 ; E21B10/42 ; E21B10/54

Abstract:
Downhole drilling tools designed and manufactured to minimize or reduce imbalance forces and wear by disposing cutting elements in cutter groups and cutter sets in a level of force balance and by placing impact and/or wear resistant cutters on blades subject to high impact forces and/or large loadings. Manufacturing costs may be reduced by placing inexpensive cutters on blades not subject to high impact forces and/or loadings. Some embodiments comprise designing downhole tools with combinations of thicker blades to receive high impact forces and/or loadings with thinner blades. Some embodiments comprise designing downhole drilling tools with optimized fluid-flow properties. Designing methods may comprise performing simulations on a designed tool, evaluating respective forces acting on cutters during simulated engagement with a downhole (uniform and transitional) and/or evaluating wear on cutters and bit, and/or CFD simulations to evaluate fluid-flow optimization on a tool. Various cutter layout procedures and algorithms are described.
Public/Granted literature
- US20190080034A1 PDC BITS WITH MIXED CUTTER BLADES Public/Granted day:2019-03-14
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