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Nozzle Cavitation and Rock Erosion Experiments Reveal Insight into the Jet Drilling Process
Author(s) -
Jasper Sarah,
Gradzki Daniel P.,
Bracke Rolf,
Hussong Jeanette,
Petermann Marcus,
Lindken Ralph
Publication year - 2021
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202100056
Subject(s) - cavitation , nozzle , shadowgraphy , particle image velocimetry , jet (fluid) , erosion , process (computing) , petroleum engineering , drilling , materials science , drilling fluid , velocimetry , cavitation erosion , geotechnical engineering , geology , mechanics , mechanical engineering , optics , engineering , laser , turbulence , metallurgy , paleontology , physics , computer science , operating system
An in‐depth process analysis of water jetting, a promising cost‐effective drilling method for the exploration of geothermal reservoirs, is presented. The jetting process is analyzed under submerged and pressurized conditions by complementary high‐speed shadow imaging, particle image velocimetry, and rock erosion analysis. The shadowgraphy and velocimetry experiments show that nozzle cavitation dominates the process, and it can be described by a modified cavitation number. Rock erosion experiments show that cloud cavitation governs material erosion. Thus, control of cavitation is essential for the jetting process.