Invention Grant
- Patent Title: Multilevel force balanced downhole drilling tools and methods
- Patent Title (中): 多级力平衡井下钻具和方法
-
Application No.: US13133615Application Date: 2009-12-09
-
Publication No.: US08899357B2Publication Date: 2014-12-02
- Inventor: Shilin Chen
- Applicant: Shilin Chen
- 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.
- International Application: PCT/US2009/067263 WO 20091209
- International Announcement: WO2010/068646 WO 20100617
- Main IPC: E21B10/00
- IPC: E21B10/00 ; B23P15/28 ; E21B10/43 ; E21B10/55

Abstract:
Various downhole drilling tools designed and manufactured at least in part on evaluating respective forces acting on respective groups and sets of cutting elements during simulated engagement with the downhole end of a wellbore and drilling from a first downhole formation into a second downhole formation. Simulating forces acting on each cutting element as the cutting element contacts a downhole formation may be used to force balance downhole drilling tools during transition drilling or non-uniform downhole drilling conditions. Multilevel force balanced downhole drilling tools may be designed using five respective simulations, cutter group level, neighbor cutter group level, cutter set level, group of N (N=3 or N=4) consecutive cutters level and all cutters level. Various cutter layout procedures and algorithms may also be used to design multilevel force balanced downhole drilling tools which may drill faster with higher lateral stability, especially during downhole transiting drilling conditions.
Public/Granted literature
- US20110240376A1 MULTILEVEL FORCE BALANCED DOWNHOLE DRILLING TOOLS AND METHODS Public/Granted day:2011-10-06
Information query