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Oilwell Drilling Engineering
ISBN:
9780791861875
No. of Pages:
512
Publisher:
ASME Press
Publication date:
2019
As discussed earlier, there are three types of drill bits: roller cone, PDC, and natural diamond. Each bit type has multiple design features targeting different geologic formations. Making choices among so many drill bits is based on performance, cost, availability, and risk as relates to technology. Bit performance is weighted highest among the four-decision metrics with footage cost being a key factor.
8.1
Economics of Drill Bit Selection
8.2Monitoring Drill Bit Performance
8.3Breakeven Curve
8.4Footage Cost Using Drilling Motors
8.5Effect of Premature Tool Failure on Footage Cost
8.6Summary of Equations
8.7Problems
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