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Keywords: threshold force
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Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-434
... than a threshold force of the rock medium. This model does not account for penetration due to rotary drilling bit shear or fluid flow. A Specific Energy Index (SEI) and a Performance Index (PI) are employed to evaluate percussive force profiles. SEI reflects the effects of rate of penetration (ROP...
Proceedings Papers
Publisher: American Rock Mechanics Association
Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0653
... Reservoir Characterization Completion Installation and Operations normal penetration chip formation crater specific energy threshold force drilling operation sharp wedge blunt indentor teeth bit selection structural geology resistance non-normal penetration indentor indentation normal force...
