Potential Advantages to Water Jet Drilling for Use in In-Situ Coal Gasification Processes
Current methods of in-situ gasification require that inter-well connection be by means of either reverse combustion burning or by directional drilling. High-pressure water jet drills concentrate the energy of cutting in a small area and the total thrust required to advance this system is thus minimized. A test unit operating at a pressure of 70 MPa and a flow rate of 90 L/min has been used to demonstrate, in a surface trial, the practicality of this concept for interconnecting two in-situ gasification wells located 20 m apart.
D. A. Summers and C. R. Barker, "Potential Advantages to Water Jet Drilling for Use in In-Situ Coal Gasification Processes," Journal of Energy Resources Technology, Transactions of the ASME, American Society of Mechanical Engineers (ASME), Jan 1981.
The definitive version is available at http://dx.doi.org/10.1115/1.3230827
Mining and Nuclear Engineering
Article - Journal
© 1981 American Society of Mechanical Engineers (ASME), All rights reserved.