Petronas sticks on all offshore multi-platforms for K5
The Malaysia national oil company (NOC) Petronas is opting for the all offshore multi-platforms concept to develop the challenging K5 natural gas field in the South China Sea offshore the Sarawak Province in Malaysia.
The K5 natural gas field is rather unique as it contain 70% of carbon dioxide (CO2).
Usually with such a rate of CO2, no gas field has a chance to become commercially viable.
But the size of the field and the economical dependence of the Malaysian economy on the gas exploration and production has motivated Petronas to investigate all potential solutions to develop these gas fields with high content of CO2.
These fields hold more than 13.2 trillion cubic feet (tcf) of natural gas and twice more of carbon dioxide.
In this case, the CO2 may be a valuable resource to boost the production of depleting crude oil fields such as the Block SK-8, Jintan and Seria 50 kilometers from Bintulu LNG plant.
If the idea looks simple and attractive, the solution from the CO2 separation on the gas fields to its injection in the oil fields rise many questions because of the quantities to be treated and the distance between the respective fields.
Petronas and Twister to run CO2 separation pilot in K5
The onshore solution should only use offshore platforms for the production that would feed through export pipeline an onshore gas central processing facility (CPF) to be located adjacent to the Bintulu liquefied natural gas (LNG) plant.
In this scenario the CO2 should be exported by subsea pipelines to the crude oil fields for injection.
The offshore solution offers significant costs advantage but increase the size of the topsides, up to 100,000 tonnes, and the risk related to the technology required for the CO2 separation and handling up to injection.
In this new configuration the FEED work should cover:
– Five offshore platforms including, two wellheads, the CPP, and two compression platforms
– Gas export pipeline to Bintulu LNG Plant
– CO2 export pipelines to Block SK-8, Jintan and Seria oil fields