Robsrich
In short no.
The present helicopters in the N Sea carry 19 pax. A tilt rotor that size may probably have a "d" value (based on overall disc and a/c size) above what most helidecks would be capable of accepting.
The risk assessment on what would happen should the mechanical process that allows transition from forward to hover flight fail would also scare the oil companies off.
The unanswered questions on asymmetric lift during approach which has seen a tilt rotor crash would also make the regulators and oil companies think twice before allowing civil passenger flying.
HF