Petronas/Rolls Royce Solves Needs of Large-Scale Offshore Production Project

CCI recently had the opportunity to work with the Angsi-A offshore platform in Malaysia that is currently taking part in a large-scale offshore gas/oil production project. As a “secondary” product, the gas will be re-injected back into the underground formations to enhance recovery of crude oil, with a portion of the gas to be transported to onshore facilities for processing and distribution.

Two compressor trains supplied by Rolls-Royce Energy Services in Mount Vernon, Ohio, will be used for the gas re-injection/transmission process. Use of these compressors not only requires protection from potentially destructive surge conditions, but also necessitates a high degree of reliability. These requirements prompted a critical decision by Petronas/Rolls Royce to install 100D DRAG® anti-surge control Valves, manufactured by CCI. The valves will be installed in a design which will significantly mitigate the possibility of trim damage, due to uncontrolled trim exit kinetic energy levels.

Consistent with Instrument Society of America (ISA) guidelines, CCI’s DRAG® trim will be designed to maintain the trim exit velocity head at 70 psi (4.8 BAR), or less. Furthermore, by maintaining a not-to-exceed limit of 70 psi velocity head, CCI’s design will maintain valve-generated noise levels below specified limits, as well as reduce the possibility of pipeline vibration and fatigue.

Another key aspect critical to protecting the compressor is valve response time. CCI’s pneumatic actuators will provide full-stroke times of two seconds or less, which is in compliance with Compressor Controls Corporation (CCC) specifications. CCC was awarded a contract by Petronas/Rolls Royce to provide the surge control systems for both trains.

CCI has more than 30 years of experience serving the critical service control valve needs of the oil and gas industry. Today's DRAG® valves combine this experience to work for you in providing increased production and lowest overall cost.

Published in SOLUTIONS Summer 2000