An experimental and theoretical study of a coupling mechanism between longitudinal and torsional drillstring vibrations at the bit

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

DOI:https://doi.org/10.2118/15563-PA· OSTI ID:7244355

Aarrestad, T V; Kyllingstad, A

A mechanism that couples longitudinal and torsional drillstring vibrations at the bit was studied. Torsional vibrations are associated with dynamic variations of the rotational bit speed. When a roller bit runs over a multilobed pattern, these speed variations have been shown to affect the input of longitudinal vibrations. The theory for this coupling mechanisms is verified experimentally by high-rate data of near-bit accelerations and torque recorded in a 1000-m (3,280-ft) -deep well.

• Research Organization: Rogaland Research Inst. (NO)
• OSTI ID: 7244355
• Journal Information: SPE (Society of Petroleum Engineers) Drill. Eng.; (United States), Vol. 3:1
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
DRILL BITS
COUPLINGS
MECHANICAL VIBRATIONS
CALCULATION METHODS
DAMPING
DRILL PIPES
NATURAL GAS WELLS
OIL WELLS
PIPE JOINTS
ROCK DRILLING
ROTARY DRILLING
ROTARY DRILLS
TORQUE
VELOCITY
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
JOINTS
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing