Invention Grant
- Patent Title: Drilling apparatus with fixed and variable angular offsets
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Application No.: US15576598Application Date: 2015-07-09
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Publication No.: US10655394B2Publication Date: 2020-05-19
- Inventor: Hamid Sadabadi , Hossam Gharib
- 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: Parlee McLaws LLP
- Agent Terrence N. Kuharchuk; Craig W. Roddy
- International Application: PCT/CA2015/050369 WO 20150709
- International Announcement: WO2017/004691 WO 20170112
- Main IPC: E21B7/06
- IPC: E21B7/06

Abstract:
A drilling apparatus including a housing having a housing bore, a proximal housing end, and a distal housing end, a driveshaft rotatably supported within the housing bore, a fixed first angular offset axially located between the proximal housing end and the distal housing end, and a variable second angular offset axially located between the proximal housing end and the distal housing end. The drilling apparatus may have a reduced stiffness section so that the drilling apparatus bends preferentially at the reduced stiffness section, and the variable second angular offset may be axially located at the reduced stiffness section.
Public/Granted literature
- US20180163476A1 Drilling Apparatus With Fixed and Variable Angular Offsets Public/Granted day:2018-06-14
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