Measurement and analysis of chatter in a compliant model of a drillstring equipped with a PDC bit

Conference · Tue Nov 09 00:00:00 EST 1999

OSTI ID:750032

Elsayed, M A; Raymond, D W

Typical laboratory testing of Polycrystalline Diamond Compact (PDC) bits is performed on relatively rigid setups. Even in hard rock, PDC bits exhibit reasonable life using such testing schemes. Unfortunately, field experience indicates otherwise. In this paper, the authors show that introducing compliance in testing setups provides better simulation of actual field conditions. Using such a scheme, they show that chatter can be severe even in softer rock, such as sandstone, and very destructive to the cutters in hard rock, such as sierra white granite.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 750032
• Report Number(s): SAND-99-2895C; TRN: AH200006%%3
• Resource Relation: Conference: American Society of Mechanical Engineers' Energy Technology Conference and Exhibition, New Orleans, LA (US), 02/14/2000--02/17/2000; Other Information: PBD: 9 Nov 1999
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DRILL BITS
PERFORMANCE TESTING
ROCK DRILLING
DIAMONDS
SERVICE LIFE
MECHANICAL VIBRATIONS
SANDSTONES
GRANITES