Project showcase
Well Design and Cost Optimization Study
Project goal
To reduce drilling costs and identify suitable well control measures for the purposes of assuring safety integrity amid a cost-conscious environment
Client:
Oil and Gas Operator
Asset:
Exploration well
Location:
Mediterranean Sea
The Request
Due to the criticality and unique complexity of the project goal and requirements, the operator required a specialist consultancy to:
- Identify opportunities to reduce drilling costs
- Develop a well control contingency plan for the exploration well
- Determine safe, suitable, and cost-effective well control measures for the well

The Challenge
After a detailed analysis of the well design, it was identified that there could be significant challenges for regaining control of the well in the event of a blowout from the target reservoir.
Why
The reservoir targets were expected to contain dry gas with a significant flow potential
Options Available
- Reduce the flow potential and hence the kill requirements through reduction of the tubular sizes. This would however reduce production capacity and add significant costs to the project
- Determine suitable contingency measures for well control and improve contingency plan and toolkit
What we did
Option 2: A well control study was performed by Add Energy’s well control and blowout specialists, the results included:
- Significant updates to the existing blowout contingency plan detailing the well control challenges of this well
- Identification of suitable contingency measures
- A bulletproof contingency toolkit for assuring efficient and effective well control of the “worst case” scenario blowout
- Opportunities to reduce drilling costs
- Identification of improved well design achieved by installing 9 5/8" casing above the top of the shallowest gas sand at a safe depth of 5000 meters
- Access rights to the RWIS (the world’s only single relief well injection spool)
Project Benefits

Well Control Assurance

Cost Reduction

Drilling Target Achieved

Emergency Response – On Demand
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