Mechanism of drilling rate improvement using high-pressure liquid nitrogen jet
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DOI: 10.1016/s1876-3804(19)60239-9
Abstract: Abstract To address the high rock strength and low drilling rate issues in deep oil/gas and geothermal exploitation, we performed mechanical property tests on three kinds of rock samples (granite, shale and sandstone) subjected to… read more here.
Keywords: rock breaking; ln2 jet; drilling rate; jet ... See more keywords
Determination of Drilling Rate Index Based on Rock Strength Using Regression Analysis.
Sign Up to like & getrecommendations! Published in 2019 at "Anais da Academia Brasileira de Ciencias"
DOI: 10.1590/0001-3765201920181095
Abstract: Drillability is influenced by many factors, including machine parameters and rock properties. The main machine parameters for drilling include rotational speed, thrust force, torque and flush pressure. The specific rock characteristics that affect penetration rate… read more here.
Keywords: tensile strength; strength; regression; drilling rate ... See more keywords