August 19, 2011 -
NETCO news Journal
NETCO COMPLETES DETAILED ENGINEERING DESIGNS OF SO
The SLIMFEED modification works required for SOKU NAG plant officially ended on March 19th, 2011 and it was successfully completed by NETCO to the satisfaction of the client –SHELL., Although Shell approached NETCO with a concept to convert one of the existing Associated Gas (AG) compressor in order to exploit the NAG wells, the design team in conjunction with Shell, came up with another option that can better achieve the same requirements with better results.
THE FEED phase was very robust and it went through rigorous review workshops such as
HAZID (Hazard Identification) workshop
HAZOP (Hazard and Operability) workshop, and
IDR (Independent Design Review) workshop
These workshops had in attendance NAPIMS, DPR, NAOC, TOTAL and technical authorities (TA) FROM Shell.
The importance shell attached to this plant was based on the fact that SOKU is a live gas plant and modification of any part must be carefully guided to ensure minimal or no disruption to the plant.
The FEED package was handed over to Shell in March 2011 and Shell noted with satisfaction the good work done by the to proceed to Detail Engineering Design phase.
The DED scope was scheduled for 3months and due to the urgency Shell attached to realizing the project, IIT package for two Long Lead Items (LLI) viz; NAG ( major & minor) Manifolds and LP Separator were to be issued to local fabricators by June 2011. NETCO design team worked very hard to meet this tight schedule.
The overall Detailed Engineering Design (DED) Scope for the SOKU NAG modification works can be summarized as follows:
Installation of a 12 ligament manifold inside Soku gas plant. Scope includes confirmation that existing gas heaters and chokes are fit for purpose and only piping, instrumentation and values are needed. Gas testing will now be done through existing test separator against the initial proposed wet gas metering.
Provision of Hook-up points for identified wells to this new manifold by connecting to the flowline ligament blind flange on the existing gas plant manifold. Provision of isolation valves to be included to prevent overpressure.
Routing gas from the new manifold to a separator. Review of instrumentation for this new service will also be carried out.
Routing gas from the Separator into the new compressor via the compressor HP inlet scrubber Carry out tie-in/integration of the new manifold and separator to the plant. Control integration with 3rd party Compressor and Instrument vendors for seamless interfaces.
The schematic layout of the plant area identifying points where the modification works will be carried out was shown in the diagram.