Compact Control System For Offshore Marginal Oilfield Platform

In order to reduce the cost in developing small and marginal oil and gas field, the unmanned platforms are designed and fabricated with compact process control system. However, it is economically inefficient when the platform installed with traditional whole set of control system. This article introduces a new control system designed for small and marginal oilfield platform which enables the pressure control and logic shutdown for the platform during production process. Instead of using electronic meters and compressor control system, it uses gas form a nitrogen package as the drive of control system for pneumatic instrument and fusible circuit. At the same time, it utilizes the hydraulic pressure from a hydraulic pump to drive the whole control system. With a simple structure and easy operation procedure, this control system is proved to be practically feasible and economically efficient for the production platforms of small and marginal oilfield. KEY WORD: Simplified platform; Marginal field; Compact Control System; BZ34-3 and BZ 34-5