Agreed this news is not a reason to sell IMO.
Why:
1 - it's not a down hole issue
2 - it is not too expensive
3 - it does not change flow rate outcome
4 - information from company is factual, transparent and keeps the investors informed
Any selling into this may be an opportunity - though the down time duration may blow out and a wait for a return may be more than 10 days IMO.