Simultaneous Operations (SIMOPS)
SIMOPS describes an operating situation in which drilling or well operations or other defined activities take place at the same time as production/injection in the same well area. A SIMOPS study will require risk assessments since the conditions for SIMOPS are that an abnormal operating situation in one activity shall not significantly increase the risk in other ongoing activities.
The safety scope of a SIMOPS study is usually to review the Operator’s risk assessment procedure for SIMOPS to verify its adequacy for the planned SIMOPS.
A SIMOPS is not necessarily related to drilling and well operations. Bunkering, heavy lifting and construction activities on a facility/ship in operation are normally defined as SIMOPS and require special risk assessments.