Page 59 - Well Control for Completions and Interventions

50 Well Control for Completions and Interventions

1.1.11.1 Person in charge of well control
Before work starts, the person in charge of well control must be clearly
identified. Where a drilling rig is used to carry out completion or work-
over operation, or where it is being used in support of an intervention,
the person in charge of well control is normally the operating company
representative at the well site. Where well intervention operations are car-
ried out without rig support, the person in charge of well control is nor-
mally an operating company supervisor. In some circumstances, the
senior specialist from the intervention service provider will be the person
in charge of well control. For example, slickline crews working in a
remote location are often expected to work without the direct on-site
supervision of a client company representative. The slickline operator is
the person in charge of well control at the worksite. The person in charge
is not necessarily the person who performs the vital actions needed to
make a well safe when a well control incident occurs. For example, if a
well begins to flow whilst completion tubing is being run, it would nor-
mally be up to the driller to shut it and make it safe.
Whoever is in charge of well control must be clear about their
responsibilities.

1.1.11.1.1 Responsibilities during rig supported completion and
workover operations
Well Control Prevention.
• Seek assurance that all personnel are competent to perform their
assigned tasks and have the requisite well control training/certification.
• Examine the work program and any accompanying risk assessment
documentation. Identify any well control risks and concerns. Ensure
that any identified risks and the appropriate mitigations are communi-
cated to the crew.
• Ensure members of the crew know how to respond to well control
emergencies.
• Ensure members of the crew have knowledge of location specific
emergency plans, i.e., the correct response to fire, explosions, spillage,
etc.
• Ensure all the necessary documentation is easily accessible, easy to use,
complete, accurate, and up-to-date. This can include information
relating to well control equipment status, well status, kick sheets, shut
in instructions, and check lists. Consider compiling vital information
into a work-pack. 7