A study of excitation mechanisms and resonances inducing bottomhole-assembly vibrations

Journal Article · Tue Mar 01 04:00:00 EST 1988 · SPE (Society of Petroleum Engineers) Drill. Eng.; (United States)

OSTI ID:7104944

Besalsow, A A; Payne, M L

This paper presents a study of important excitation mechanisms and resonances that cause bottomhole assembly (BHA) vibrations during drilling operations. The study is based on dynamic vibration data gathered in a test well with our Advanced Drillstring Analysis and Measurement System (ADAMS) surface measurement system. The data were gathered while three different BHA's were used to drill portions of this well to 800 ft (244 m). A case study for a large-diameter hole in an actual field well is also presented. The data showed many velocity-dependent excitation mechanisms, including 1 X ..omega.., 2 X ..omega.., 3 X ..omega.., a drillstring walk mechanism, and drillstring whipping mechanisms that were dependent on the drillstring and hole geometries. The data also show important resonances that may be excited, including resonances with strong local contributions, and axial and torsional resonances. When the excitation mechanisms match these resonances, damaging vibrations can be induced. This study identifies the presence of more fundamental excitation mechanisms than the 1 X ..omega.. and 3 X ..omega.. mechanisms. These should be used in models that predict drillstring and BHA vibrations. The study also shows important resonances that should be considered when BHA vibrations are predicted.

• Research Organization: Arco Oil and Gas Co. (US)
• OSTI ID: 7104944
• Journal Information: SPE (Society of Petroleum Engineers) Drill. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Drill. Eng.; (United States) Vol. 3:1; ISSN SDENE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DAMAGE
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS
METERING
NATURAL GAS WELLS
OIL WELLS
PIPES
RESONANCE
ROCK DRILLING
WELLS