STATOIL STARTED COMPRESSION
Statoil is the first company to apply subsea gas compression. In mid-September Statoil also started Åsgard subsea gas compression.
The two projects are the first of their kind worldwide, and represent two different technologies for maintaining production when the reservoir pressure drops after a certain time.
Subsea compression has stronger impact than conventional platform-based compression. It is furthermore an advantage that the platform avoids increased weight and the extra space needed on the platform for a compression module.
Subsea compression is an important technological leap to further develop the concept of a subsea factory.
Looking for more candidates
"This is one of several important projects on Gullfaks for improved recovery and field life extension. The recovery rate from the Gullfaks South Brent reservoir may be increased from 62% to 74% by applying this solution in combination with other measures," says Kjetil Hove, senior vice president for the operations west cluster.
It is also possible to tie in other subsea wells to the wet gas compressor via existing pipelines. The station has already been prepared for new tie-ins.
"We see great opportunities for wet gas compression on the Norwegian continental shelf. It is an efficient system and a concept that can be used for improved recovery on small and medium-sized fields. We are searching for more candidates that are suitable," says Hove.
Standardisation and simplification
The advantage of a wet gas compressor is that it does not require gas and liquid separation before compression, thereby simplifying the system considerably and requiring smaller modules and a simpler structure on the seabed.
"The Gullfaks wet gas compressor is a unique, compact and cost-effective solution. The concept may be standardised by applying well-known technology components," says Øvrum.
Successful installation campaign
The system consists of a 420-tonne protective structure, a compressor station with two five-megawatt compressors totalling 650 tonnes, and all equipment needed for power supply and system control on the platform.
Extensive preparations had been made on Gullfaks C before the subsea compressor could be started, including modifications and preparation of areas as well as installation of equipment.
Gullfaks licensees: Statoil (operator) (51%), Petoro (30%), OMV (19%)
|July, 16, 11:05:00|
|July, 16, 11:00:00|
|July, 16, 10:55:00|
|July, 16, 10:50:00|
|July, 16, 10:45:00|
|July, 16, 10:40:00|
AN - China National Offshore Oil Corp. (CNOOC) is willing to invest $3 billion in its existing oil and gas operation in Nigeria, the Nigerian National Petroleum Corporation (NNPC) said on Sunday following a meeting with the Chinese in Abuja.
REUTERS - Production at Libya’s giant Sharara oil field was expected to fall by at least 160,000 barrels per day (bpd) on Saturday after two staff were abducted in an attack by an unknown group, the National Oil Corporation (NOC) said.
IMF - Output grew by 3.8 percent in 2017, underpinned by a resilient non-hydrocarbon sector, with robust implementation of GCC-funded projects as well as strong activity in the financial, hospitality, and education sectors. The banking system remains stable with large capital buffers. Growth is projected to decelerate over the medium term.
IMF - Higher oil prices and short-term portfolio inflows have provided relief from external and fiscal pressures but the recovery remains challenging. Inflation declined to its lowest level in more than two years. Real GDP expanded by 2 percent in the first quarter of 2018 compared to the first quarter of last year. However, activity in the non-oil non-agricultural sector remains weak as lower purchasing power weighs on consumer demand and as credit risk continues to limit bank lending.