Well Integrity Investigation
Add Energy performed a technical post well investigation of the Client’s planning and execution performance relating to plug and abandonment of a subsea exploration well.
Why We Were Contracted
The Client’s exploration well had been drilled and abandonment operations commenced.
After having plugged and cut the 9 5/8” and 13 3/8” casing strings, small gas bubbles were rising out of the well when the BOP was lifted off the wellhead. The BOP was re-connected and a series of remedial actions followed involving multiples of squeeze cementing, removal and re-setting of cement plugs, setting new bridge plug and one barite squeeze. The cement plug located close to seabed was finally tested and held pressure. The wellhead was then cut and the well topped up with cement.
Add Energy was contacted to give advice on further action to rectify the situation, then followed with the task of conducting a technical investigation.
What We Did
Data gathering and interviews
Technical and operational analysis
The report covered a presentation of facts, execution summary, compliance assessments and suggestion for improvements and changes to Client’s well barrier philosophy standard and abandonment program.
The Client used this independent review towards partners and authorities.
"The report looks good. Very thorough, clear and informative."
Get in touch
If you'd like to learn more or discuss your project with us, please get in touch by completing the form below...