The operator of the FPSO was facing a new opportunity to utilize the existing process capacity both on the gas handling and liquid handling. In addition, accessible space and weight on the process area could be another challenge.
This opportunity involved two challenges, one more tricky than the other.
- Different ownership, hence, allocation issue.
- The new oil field will create compatibility issues.
The first challenge might be addressed using multi-phase metering which did not challenged the space and weight constrains.
The second challenge might be solved by use of the test separator processing the new tie back, but frequent use of this test separator for well testing, hence stop in production with the consequences for both the economy and well behaviour, turned out to be a showstopper.
The compatibility issue required a dedicated separator.