Pumping & Pressure Control
Client Situation
During a workover operation in Pozo Cerro Verde (TD: 2,850 m), the operator experienced unexpected pressure spikes while circulating out gas influx.
Wellhead pressure: 1,450 psi (unstable).
Annular returns: erratic, indicating poor pressure control.
Existing equipment: aging 10k BOP stack, limited choke manifold capacity. The situation posed high risks of kick escalation and well control incident.
Intervention
BJ deployed an integrated pumping and surface pressure control package, including:
1.High-pressure pumping units (15k psi rating) to manage kill mud circulation.
2.Upgraded choke manifold & remote control system for precise backpressure management.
3.Managed Pressure Drilling (MPD) equipment installed to stabilize annular pressure.
4.Continuous pressure testing & certification performed on BOP and surface lines before resuming operations.