Banca de QUALIFICAÇÃO: HELENO PONTES BEZERRA NETO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : HELENO PONTES BEZERRA NETO
DATE: 15/04/2021
TIME: 09:30
LOCAL: SALA REMOTA NO GOOGLE MEET
TITLE:

CALCULATION OF FATIGUE IN DRILLING COLUMNS IN OIL WELLS DURING BACKREAMING OPERATION IN HIGH-SLOPE DIRECTIONAL WELLS AND HORIZONTAL WELLS

KEY WORDS:

ABAQUS® computational modeling, Fatigue life, Backreaming operations.

PAGES: 39
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Estruturas
SPECIALTY: Mecânica das Estruturas
SUMMARY:

At the end of drilling the well phase, the drilling column must be removed. Withdrawal can occur in two ways: without rotation and fluid circulation through the drill or using the backreaming operation, when there are fluid circulation and spinal rotation. In the design of the drilling column, several criteria must be met considering the entire drilling operation, including static loads; torque and drag; buckling and fatigue. The latter is a type of mechanical failure caused by the repeated application of variable loads, stresses, or deformations, which can generate and propagate cracks and lead to the rupture and sudden collapse of the structure or structural element. This type of failure generates a lot of losses, both financial and in the delay of the schedule, because time is required for the replacement of the affected parts, in some cases an operation is necessary to remove the part from the bottom of the well, in others there is a loss of well due to the impossibility of continuing the operation. This work aims to study the fatigue life of BHA (Bottom Hole Assembly) components in drilling columns during the backreaming operation. Initially, ABAQUS® models will be developed for the study in vertical wells, then they will be considered directional wells with high inclination, ending with horizontal wells. It is expected, with this work, to contribute to the studies of fatigue and backreaming operations in directional and horizontal wells, and increasing safety when carrying out this type of field operation.

BANKING MEMBERS:
Presidente - 1121260 - EDUARDO NOBRE LAGES
Interno - 1742402 - JOAO PAULO LIMA SANTOS
Interna - 1121075 - ALINE DA SILVA RAMOS BARBOZA