Performance comparison of rolling-cutter bits with alternative nozzle designs
Journal Article
·
· SPE (Society of Petroleum Engineers) Drilling Engineering; (USA)
- Reed Tool Co. (US)
Controversy exists regarding the optimum nozzle design for rolling-cutter bits. This paper describes the use of controlled laboratory conditions to isolate the true benefit of various hydraulic designs. Tests were conducted in a pressurized drilling environment with 9 7/8-in.(251-mm) tooth and insert bits in Mancos shale. Hydraulic designs include combinations of standard- and direct-nozzle bits with center jets and long and short extended-nozzle bits. Results indicate that directed nozzles provide substantially better bit cleaning and rate of penetration (ROP) than the standard-and short extended-nozzle designs and slightly faster ROP than long extended-nozzle designs.
- OSTI ID:
- 6499261
- Journal Information:
- SPE (Society of Petroleum Engineers) Drilling Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Drilling Engineering; (USA) Journal Issue: 03 Vol. 5:3; ISSN 0885-9744; ISSN SDENE
- Country of Publication:
- United States
- Language:
- English
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