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RISDevelopment of New PDC Bits for Drilling of Geothermal Wells—Part 1: Laboratory Testing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rock cutting, drilling and durability tests were conducted in order to obtain data to design polycrystalline diamond compact (PDC) bits for geothermal well drilling. Both conventional and new ...
Development of New PDC Bits for Drilling of Geothermal Wells—Part 2: Field Testing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to develop polycrystalline diamond compact (PDC) bits of about 8-1/2 in. in diameter which are able to drill geothermal wells, we have conducted the investigation with respect to the ...
Proposed Practical Methods to Estimate Rock Strength and Tooth Wear While Drilling With Roller-Cone Bits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The authors have previously developed and proposed methods to estimate the in situ rock strength and tooth wear while drilling with roller-cone bits [Karasawa et al., 2002, ASME J. Energy ...
Methods to Estimate the Rock Strength and Tooth Wear While Drilling With Roller-Bits—Part 2: Insert Bits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: New methods to estimate both the rock strength and tooth wear while drilling with roller-bits were developed and proposed in Part 1. These methods were derived from the results of drilling ...
Methods to Estimate the Rock Strength and Tooth Wear While Drilling With Roller-Bits—Part 1: Milled-Tooth Bits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes new methods to estimate both the rock strength and tooth wear while drilling with roller-bits. Laboratory drilling tests were conducted to obtain the penetration rate, bit ...