Cavitating and Structured Jets for Mechanical Bits to Increase Drilling Rate—Part I: Theory and ConceptsSource: Journal of Energy Resources Technology:;1984:;volume( 106 ):;issue: 002::page 282Author:V. E. Johnson
,
G. J. Giacchino
,
G. L. Chahine
,
W. T. Lindenmuth
,
A. F. Conn
,
G. S. Frederick
DOI: 10.1115/1.3231053Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The erosion and cleaning effect of jets is enhanced when the degree of cavitation on or near the bottom of the hole is increased. Analyses indicate that self-excited, acoustically resonating nozzles, causing jets to be structured with large discrete vortex rings, should promote cavitation to depths several times greater than for conventional jets. The new nozzle designs are shown to be suitable for existing mechanical drill bits and may even effect hole cleaning in the absence of cavitation.
keyword(s): Drilling , Jets , Cavitation , Nozzles , Vortices , Erosion , Acoustics AND Bits (Tools) ,
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| contributor author | V. E. Johnson | |
| contributor author | G. J. Giacchino | |
| contributor author | G. L. Chahine | |
| contributor author | W. T. Lindenmuth | |
| contributor author | A. F. Conn | |
| contributor author | G. S. Frederick | |
| date accessioned | 2017-05-08T23:17:36Z | |
| date available | 2017-05-08T23:17:36Z | |
| date copyright | June, 1984 | |
| date issued | 1984 | |
| identifier issn | 0195-0738 | |
| identifier other | JERTD2-26398#282_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/98320 | |
| description abstract | The erosion and cleaning effect of jets is enhanced when the degree of cavitation on or near the bottom of the hole is increased. Analyses indicate that self-excited, acoustically resonating nozzles, causing jets to be structured with large discrete vortex rings, should promote cavitation to depths several times greater than for conventional jets. The new nozzle designs are shown to be suitable for existing mechanical drill bits and may even effect hole cleaning in the absence of cavitation. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Cavitating and Structured Jets for Mechanical Bits to Increase Drilling Rate—Part I: Theory and Concepts | |
| type | Journal Paper | |
| journal volume | 106 | |
| journal issue | 2 | |
| journal title | Journal of Energy Resources Technology | |
| identifier doi | 10.1115/1.3231053 | |
| journal fristpage | 282 | |
| journal lastpage | 288 | |
| identifier eissn | 1528-8994 | |
| keywords | Drilling | |
| keywords | Jets | |
| keywords | Cavitation | |
| keywords | Nozzles | |
| keywords | Vortices | |
| keywords | Erosion | |
| keywords | Acoustics AND Bits (Tools) | |
| tree | Journal of Energy Resources Technology:;1984:;volume( 106 ):;issue: 002 | |
| contenttype | Fulltext |