Dynamic stability of drillstrings under fluctuating weight on bit

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · SPE Drilling and Completion; (United States)

DOI:https://doi.org/10.2118/14329-PA· OSTI ID:6017603

Dunayevsky, V A; Abbassian, F; Judzis, A

This paper describes the theory and the underlying formulation behind the development of a drillstring-dynamics simulator that predicts rapidly growing lateral vibrations triggered by axially induced bit excitations. The analyses center on calculations of stable rotary speed ranges for a given set of drillstring parameters and are presented in vibration severity' vs. rotary speed plots. The critical rotary speeds, which correspond to the rapidly growing lateral vibration, are pinpointed by spikes on the severity plots. Some applications of the drillstring-dynamic simulator are presented, and limitations and further model development are discussed.

• OSTI ID: 6017603
• Journal Information: SPE Drilling and Completion; (United States), Journal Name: SPE Drilling and Completion; (United States) Vol. 8:2; ISSN XZ211N
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DYNAMIC LOADS
DYNAMICS
EQUIPMENT
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
PIPES
WELL DRILLING
WELLS