Primary well control shall be maintained at all times. In the event secondary control becomes necessary, the well shall be brought back under control as safely as possible.
For each well control operation all personnel shall have a pre-assigned task appropriate to their function. All personnel shall also ensure familiarity with Company well control procedures.
The well control responsibilities during well killing operations are given in the following table.
|
Activity |
Execution |
Quality Control |
|
Ensure all preparations, personnel certification and drills meet Company requirements |
Drilling Contractor |
Drilling Supervisor |
|
Ensure emergency barite stocks are on site |
Mud Engineer |
Drilling Supervisor |
|
Ensure well control equipment tested and fully functional |
Drilling Contractor |
Drilling Supervisor |
|
Ensure all personnel are informed of their pre-assigned tasks |
Drilling Contractor |
Drilling Supervisor |
|
Ensure kick drills are carried out routinely |
Drilling Contractor |
Drilling Supervisor |
|
Record slow circulating rates as required (after mud wt. change or every 500 ft drilled) |
Drilling Contractor |
Drilling Supervisor |
|
Identify and shut in well flow, inform Drilling Supervisor |
Driller |
Drilling Supervisor |
|
Monitor shut-in and record kick data |
Drilling Contractor |
Drilling Supervisor |
|
Perform calculations and plan kill procedure |
Drilling Supervisor |
Drilling Supervisor |
|
Preparation of kill mud |
Mud Engineer |
Drilling Supervisor |
|
Ensure well is secure, kill data collected and kill calculations are properly performed |
Drilling Supervisor |
Drilling Supervisor |
|
Hold a pre-kill meeting with key personnel |
Drilling Supervisor Drilling Contractor |
Drilling Supervisor |
|
Supervise rig crew during kill |
Drilling Contractor |
Drilling Supervisor |
|
Co-ordinate activities of Drilling Contractor and 3rd party contractor personnel throughout operation |
Drilling Supervisor Drilling Contractor |
Drilling Supervisor |
Responsibilities of the Drilling Supervisor
The ultimate authority and final decisions in well control situations lies with the Company Drilling supervisor.
The Drilling Supervisor shall take charge and shall have overall responsibility for well control emergencies. He shall work in close co-operations with the Drilling Contractor Toolpusher during the emergency.
Types of emergencies include a kick, hydrogen sulphide encountered, blow out, fire/explosion and evacuation offshore/onshore.
Responsibilities of the Drilling Contractor Toolpusher
The Drilling Contractor Toolpusher has the primary responsibility for the implementation of policies and procedures on well control form instructions given by the Company Drilling Supervisor.