Investigations into the effects of an arc discharge on a high velocity liquid jet
Conference
·
OSTI ID:7218674
One of the most effective drilling techniques is jet (or erosion drilling. Experiments with jet drilling have shown the technique to be effective with pressures up to 100 MPa (14,500 psi) in most sedimentary rocks. In an attempt to determine an enhancement technique, the effects of an arc discharge on a jet were investigated. The primary effects considered were the enhancement of the initial shock wave by the stream velocity, the water hammer caused by the interrupted stream and the jetting into a collapsing cavitation bubble. Although the experiments were conducted at atmospheric pressure conditions, effects of hydrostatic pressure on the system were considered. The experimental apparatus consisted of a capacitive discharge system to develop an arc through the jet passing between the electrodes. The primary diagnostic tools were piezoelectric pressure transducers, framing and stream cameras and physical damage observations. It is possible that an arc discharge can be used to significantly enhance the rock removing capabilities of a high velocity liquid jet. Any of the several effects may independently prove beneficial to the jet drilling technique. These phenomena, along with possible problem areas, are discussed.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 7218674
- Report Number(s):
- SAND-77-1135C; CONF-770903-2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigations into the effects of an arc discharge on a high velocity liquid jet
Apparatus and method for earth drilling
Advanced drilling techniques
Technical Report
·
Mon Aug 01 00:00:00 EDT 1977
·
OSTI ID:7298517
Apparatus and method for earth drilling
Patent
·
Mon Jan 24 23:00:00 EST 1966
·
OSTI ID:6582108
Advanced drilling techniques
Book
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:6404449