An experimental and theoretical study of coupled boundary conditions for vibrations in drillstrings
Conference
·
OSTI ID:7159735
The boundary condition at the bit for longitudinal vibrations in a drillstring has been studied. A theory for torsional vibrational response on the longitudinal response on the longitudinal excitation is presented. Experiments in a 1000m deep vertical well have been performed. High data rate measurements of near bit accelerations, weight on bit and torque have been used to verify the theoretical predictions in drilling situations.
- Research Organization:
- Rogaland Research Inst.
- OSTI ID:
- 7159735
- Report Number(s):
- CONF-861080-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOUNDARY CONDITIONS
CALCULATION METHODS
DEPTH
DIMENSIONS
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
FUNCTIONS
MECHANICAL VIBRATIONS
NATURAL GAS WELLS
OIL WELLS
PIPES
RESPONSE FUNCTIONS
TORQUE
TORSION
WELL DRILLING
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BOUNDARY CONDITIONS
CALCULATION METHODS
DEPTH
DIMENSIONS
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
FUNCTIONS
MECHANICAL VIBRATIONS
NATURAL GAS WELLS
OIL WELLS
PIPES
RESPONSE FUNCTIONS
TORQUE
TORSION
WELL DRILLING
WELLS