Invention Grant
- Patent Title: Fatigue analysis procedure for drill string
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Application No.: US15572218Application Date: 2016-05-04
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Publication No.: US11242741B2Publication Date: 2022-02-08
- Inventor: Wei Chen , Yani Dong , Geng Yun , Yuelin Shen , Sujian Huang
- 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
- Agent Alec J. McGinn
- Priority: WOPCT/CN2015/078623 20150508
- International Application: PCT/US2016/030621 WO 20160504
- International Announcement: WO2016/182798 WO 20161117
- Main IPC: E21B47/007
- IPC: E21B47/007 ; G06F30/20 ; E21B44/00 ; G06F17/11 ; G06F111/10

Abstract:
Management of fatigue life includes partitioning a drilling interval into sections, and calculating a stress value for each section. From the stress value, an equivalent alternative stress amplitude is calculated for each location, and a fatigue life consumption value in each section is computed. The fatigue life consumption value across the sections is aggregated to obtain an aggregated fatigue life consumption value, which is presented.
Public/Granted literature
- US20180112512A1 FATIGUE ANALYSIS PROCEDURE FOR DRILL STRING Public/Granted day:2018-04-26
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