METHOD OF DRILLING AN INVESTIGATION WELL BY USE OF AUXILIARY TABLE OF A DUAL-ACTIVITY RIG SIMULTANEOUSLY WITH ANOTHER ACTIVITY ON MAIN TABLE

• Main Authors: SORTICA, EMANUEL APOEMA, FERNANDES, GUILHERME DE ALMEIDA, OLIVEIRA, MANUEL PARCERO, DA FONSECA, JOAO PAULO TEIXEIRA, FALCAO, FLAVIA DE OLIVEIRA LIMA, RODRIGUES, BRUNO FIDALGO TELLES, DE LIMA, FLANK MELO
• Format: Patent
• Language: English
• Published: 23.05.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The present disclosure relates to a method of drilling an investigation well by use of an auxiliary table simultaneously with the operation of a main table of a dual-activity rig, which comprises assembling and lowering the drilling BHA (Bottom-Hole Assembly) with LWD (Logging While Drilling) tools and other components, starting drilling the investigation well with control of parameters, carrying out monitoring with ROV (Remoted Operated Vehicle) on the seabed for as long as possible, working on drilling parameters to optimize the drilling, within a defined rate for data acquisition, controlling flow rate in friable formations, moving viscous plugs to clean the investigation well, carrying out the pre-tests when part of the acquisition scope, promoting circulation of seawater to clean the investigation well, and filling the investigation well with heavy fluid.