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Drill design detailed procedure
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Drill-String Design
Prepared By:
Nikhil G. Barshettiwar
ME-II (Petroleum Engineering)
5/18/2015 1
CONTENTS
5/18/2015 2
Components
BHA Design
Drillpipe Selection
BHA Analysis
Conclusion
COMPONENTS
5/18/2015 3
Bit
Float Sub
Circulation Sub
Bit Sub
Stabilizer
Drill Collars
HWDP
Drillpipes
Reamers
BHA DESIGN
Drill collar OD Traditional BSR range Suggested BSR range
Less than 6 2.25-2.75 1.8-2.5
6-8 2.25-2.75 2.25-2.75
8 and up 2.25-2.75 2.5-3.2
Hole section (inches) Recommended DC ODs
36 9 + 8
26 9 +8
17 9 +8
12 8
8 6
6 4
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DRILLPIPE SELECTION Tensile Loading
Collapse Loading
Burst Loading
Torsional Loading
5/18/2015 6
BHA ANALYSIS
5/18/2015 7
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5/18/2015 9
CONCLUSION
5/18/2015 10
REFERENCES
BG Drillstring Design Manual
Shell Distance Learning Course
ONGC Drilling Operations Manual
LANDMARK WELLPLAN Manual
5/18/2015 11
THANK YOU
5/18/2015 12
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