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Logan Industries delivers subsea grease injection unit

Technology

Logan Industries International Corporation, a global machine designer, manufacturer, field service and repair company, has delivered a subsea grease injection unit as part of a complete subsea wireline pressure control system for a subsea oil and gas company

The grease injection reservoirs and monitoring/switching unit was part of an entire system, complete with: surface intervention type hydraulic power unit (HPU); reeler and umbilical; subsea grease head and lubricators; and subsea connections.

The customer required a way to provide grease to their subsea grease head by using a subsea grease supply point that also had the capacity for switching between primary, secondary and emergency circuits, and allowed visual monitoring of how much grease remained available for use during operations.

In designing and delivering a 10,000 psi grease system with 40 gallons of grease fully compensated for 10,000 ft depth, Logan engineered a very straightforward, low-tech solution. The system was capable of being powered by either a remotely operated vehicle (ROV) via hot stab or by the surface HPU through the connecting umbilical.

Dean Carey, technical director, Logan Industries, said, “The visual monitoring portion we ultimately delivered in this project is unique for this type of system, pairing accumulator/cylinder technology with the subsea environment.”

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