Well control during drilling and workover operations

Ahmed Elgibaly
2020 Journal of Petroleum and Mining Engineering  
Kick can occur during drilling or workover operations, since it can easily develop into a blowout even the most simple blowout situation can result in the loss of millions of dollars in equipment and valuable natural resources. This research study different killing methods in different situations during drilling and workover operations and the factors that affecting killing procedures. The developed study based on actual field cases in different oil fields and results of DRLLSIM 5000 simulator
more » ... SIM 5000 simulator runs for studying factors affecting killing operations. This study enables to differentiate conventional and non-conventional killing procedures during drilling and workover operations and introduce new drilling technique to face combination of pipe sticking, complete loss of circulations and kick problems while drilling operations and introduce solutions to prevent blow out while drilling shallow gas formations especially in Egyptian western desert and best killing procedures for production gas wells. Tertiary well control When the formations cannot controlled by primary and secondary well control and underground blowout and drilling relief wells can be absolutions To save human life and environment due to surface blowout 1 . So good selection of killing procedures in drilling and workover operations is very important to prevent all type of blowouts. Conventional Kick Circulation Techniques Driller's Method In the Driller's Method, the kick is circulated out of the hole using the existing mud weight. The mud weight is then raised to the required level and circulated around the well. Two complete circulations are thus required, as a minimum, for this method. The annular pressures produced during the first circulation are higher than produced with any other method 2 .
doi:10.21608/jpme.2020.79316 fatcat:x4qxxrit5rglnijscvl36wn5am