Set of wellhead, process for injecting gas in the annular space.Process for procionar access to an annular space and process for connecting a riser servicing a set of well head

摘要

"Set of wellhead, process for injecting gas in the annular space.Process for providing access to an annular space and process for connecting a riser servicing a set of well head.The set of well head has a production tree with multiple safety barriers. A hanger pipe column of the production rests on and seals the internal diameter of the tree.The riser column of tubes has a passage of the flow of production side that is aligned with a lateral passage in the tree.A passage of annular space of the column of tubes extends above the annular space of the column pipes to a hole outside.A second part of the passage of the annulus of the column tube extends upward from the outside to the inside of the hole internal diameter above the fence of the riser column of tubes.The external orifice can be used for the injection of gas. In this case, two members of closure are located in the upper part of the space of the column of annular tubes above the fence.The state of the upper closure can be both a non-return valve and a removable cap.