Abstract:
The control of wells is a cornerstone of drilling process, Through this study the detailed procedures of bleed and lubricate has been discussed; Calculated volumes of fluid that must be bled from the well during lubricating mean while keeping bottom hole pressure constant, A model to predict the surface pressure has been built, and utilized to find out the maximum number of stands that can be stripped back to bottom without proceeding surface pressure to the working pressure of the weakest component of well head.
The string has been stripped back to bottom safely using volumetric method, prior to circulate kill fluid into well which will return the well control to its primary level. The killing operation is a blend of wait and weight, and volumetric methods. The volumetric has been showed, in means of tools, procedures, and well head pressure monitoring, safe manner.
To mitigate the bad effect of the bull heading, such described methodology has been highly recommended to control the flowing wells.
