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Technical Paper: Deepwater Well Control Contingency Planning

Society: SPE
Paper Number: WVPS-178
Presentation Date: 2013
 Download: Deepwater Well Control Contingency Planning (0.21 MB PDF) Login | Register

 

Abstract 

With an increasing number of governments requesting operators to submit contingency well control plans when applying for permission to drill, well control contingency planning is becoming more important. The workflow for the well control contingency plans is being optimized as more operators are requesting specialist service providers to assist them with the creation of these plans. For most contingency plans generally only the worst case scenario is considered. This worst case scenario is a blowout from the open hole with no string in the hole, and the well producing from all of the reservoirs in the open hole section with the BOP considered fully open. 

The established workflow comprises of wellbore geometry, reservoir details and reservoir inflow, reservoir fluids. Calculating discharge rates followed by relief well planning and well kill operations and a write up of the kill requirements. 

With software simulators answers are provided to questions such as; what will be the discharge rate from a well? Can the well be killed with a single relief well and what kill volumes and rates are required to kill the well. 

This paper presents the workflow used to address the requirements for well control contingency plans. The paper will review reservoir worst case discharge calculations and will then discuss some of the additional issues that should be considered for future contingency plans.

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