Prominent Indian-based engineering and construction conglomerate Larsen and Toubro Limited (L&T) has won a contract valued at $232 million to execute Phase 2 of the Saih Rawl Depletion Compression (SRDC2) project on behalf of Petroleum Development Oman (PDO). The Engineering-Procurement-Construction (EPC) was won against fierce competition from nine international bidders, L&T stated in a filing to an Indian bourse.
The project is one of several initiatives launched by PDO, the country’s premier oil and gas exploration and production company, to sustain gas flows from reservoirs that have been in production for several years resulting in a drop in reservoir pressure. Production from the Saih Rawl (SR) Gas Fields, which are the largest in PDO’s concession, commenced in 1999. However due to declining reservoir pressure in Saih Rawl Main (SRM) Field, the Saih Rawl Main wells Flowing Tubing Pressure will continuously decline until it reaches 35 bar in the first quarter 2015.
In order to continue to produce on-spec gas through the Central Processing Plant (CPP) in first quarter 2015, second stage depletion compressors (SRDC2) are required to be installed upstream of the SRDC1. L&T has been chosen to execute this part of the project. The SRDC2 involves installation of 76 MW of gas compression capacity with 4 trains, and modification of the condensate handling system at CPR. This will enable the Saih Rawl Main field to produce Maximum Annual Daily Load (MADL) of 30 MMSCMD gas.
Phase 1 of the Saih Rawl Depletion Compression project was officially inaugurated by PDO in April this year. The depletion compression project managed to boost inlet pressure from 36 bar to 96 bar and the new plant has a capacity to handle 48 million standard cubic metres of gas per day. Beside the compression plant, a new power station with a total capacity of 120 megawatts was constructed as part of the project to cater for the increased power demand.
Gas and condensates from the Saih Rawl field are collected and processed at Saih Rawl Central Processing Plant where the depletion compression is located. The treated gas is then sent to key customers such as Oman Liquefied Natural Gas (OLNG), Qalhat LNG, Power stations and desalination units, Oman India Fertilizer Company, Sur Light Industrial Area and South Oman Gas Line via a pipeline known as the Interconnector.