Patent ID: 8684073
Filing Date: 2014-04-01
Classification: E21B

Abstract:
1. Device ( 1 ) for injection of a fluids into a wellhead ( 40 ) via a flange ( 41 ) mounted to the wellhead ( 40 ), where the device ( 1 ) comprises an outer hollow housing ( 4 , 30 ), an internal body ( 5 , 31 ), and a seal system which is arranged between the outer housing ( 4 , 30 ) and the internal body ( 5 , 31 ), which internal body ( 5 , 31 ) is movable within the outer housing ( 4 , 30 ) between a closed position and an open position, in which closed position the seal system provides a fail-safe closed bather preventing a backflow of fluids, and in which open position the seal system allows the fluid to be injected through the device ( 1 ) and into the wellhead ( 40 ), characterized in that the device ( 1 ) comprises: a first section ( a second section ( wherein the first section ( 2 ) and the second section ( 3 ) are connected to each other via a connection piece ( 44 ) which allows the first section ( 2 ) to break off from the second section ( 3 ) leaving the second section ( 3 ) inside the wellhead in a fail-safe closed position should the flange ( 41 ) in which the first section ( 2 ) is mounted be subjected to an external force which partly or completely damages the first section ( 2 ).