Installation for the separation of fluids

Abstract

An installation arranged on the sea bed for the separation of fluids, comprising at least one separator ( 1 ) that is connected to one or more wells, each via an associated well head ( 2 ) or similar, and a pipeline ( 17 ). The components separated, oil, gas, water or combinations of these substances, are fed fully or partially from the installation to a platform, vessel, etc. on the surface or via collecting pipelines onto shore, or are reinjected into the formation beneath the sea bed. Each separator ( 1 ) consists of a long pipe (pipe separator) that may form a major or minor part of the transport pipeline ( 18 ) from the well and has a diameter that is mainly equal to or slightly larger than the diameter of the transport pipeline ( 18 ).

1 . An installation arranged on the sea bed for the separation of fluids, comprising at least one separator ( 1 ) that is connected to one or more wells, each via an associated well head ( 2 ) or similar, and a pipeline, in which the components separated, oil, gas, water or combinations of these substances, are fed fully or partially from the installation to a platform, vessel, etc. on the surface or via collecting pipelines onto shore, or are reinjected into the formation beneath the sea bed, wherein each separator ( 1 ) consists of a long pipe (pipe separator) that may form a major or minor part of the transport pipeline ( 18 ) from the well and has a diameter that is mainly equal to or slightly larger than the diameter of the transport pipeline ( 18 ).  
   
   
       2 . An installation in accordance with  claim 1 , wherein a first separator ( 1 ), which is designed to separate gas and liquid, where the gas separated is fed via a pipeline ( 3 ) to the surface/shore, while the liquid separated is fed to a second pipe separator ( 8 ) for oil and water, after which the oil separated is fed to the surface/shore via a pump ( 5 ) and pipeline ( 4 ), while the water separated is reinjected into the reservoir by means of a pump ( 7 ) via a pipeline ( 6 ).  
   
   
       3 . An installation in accordance with  claim 1 , wherein a compact electrostatic coalescer ( 9 ) is arranged between the first and second pipe separators ( 1  and  3 ).  
   
   
       4 . An installation in accordance with  claim 1 , wherein a gas dehydration unit ( 11 ) and a subsequent gas/liquid separator ( 12 ) are arranged at the gas outlet from the first separator ( 11 ), whereby glycol is added via a pipeline ( 13 ) to the dehydration unit ( 11 ), while gas separated is fed from the separator ( 12 ) to the surface via a pipeline ( 14 ) and glycol separated is fed to the surface by means of a pump ( 16 ) via a pipeline ( 15 ).  
   
   
       5 . An installation in accordance with  claim 2 , wherein a compact electrostatic coalescer ( 9 ) is arranged between the first and second pipe separators ( 1  and  3 ).  
   
   
       6 . An installation in accordance with  claim 2 , wherein a gas dehydration unit ( 11 ) and a subsequent gas/liquid separator ( 12 ) are arranged at the gas outlet from the first separator ( 11 ), whereby glycol is added via a pipeline ( 13 ) to the dehydration unit ( 11 ), while gas separated is fed from the separator ( 12 ) to the surface via a pipeline ( 14 ) and glycol separated is fed to the surface by means of a pump ( 16 ) via a pipeline ( 15 ).  
   
   
       7 . An installation in accordance with  claim 3 , wherein a gas dehydration unit ( 11 ) and a subsequent gas/liquid separator ( 12 ) are arranged at the gas outlet from the first separator ( 11 ), whereby glycol is added via a pipeline ( 13 ) to the dehydration unit ( 11 ), while gas separated is fed from the separator ( 12 ) to the surface via a pipeline ( 14 ) and glycol separated is fed to the surface by means of a pump ( 16 ) via a pipeline ( 15 ).