DRILL COLUMN-RISER-WELLBORE CONTACT FORCES
IN A FLOATING DRILLING RIG IN WAVES
Author(s)
Celso Kazuyuki Morooka
Abstract
- When the drill column works rotating inside a well and riser during
an offshore drilling, contacts between the drill column and riser or, drill column
and wellbore is undesirable. Specially, in deepwater the magnification of those
forces which arise from the contact, they could provoke damage into the
drilling equipment such as BOP, riser and wellbore. The correct evaluation of
damage possibilities is very important in order to estimate the safety of the
drilling operation. Furthermore, it will be very useful for accurate planning of
drilling operations. In the present paper, behavior in waves of the floating
drilling rig is evaluated, dynamics and displacements of the riser is considered
and, finally contact forces between drill column-riser and drill column-wellbore
Keywords
Related Book
Other papers in this volume
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