All of the mouth of the well to communication with the annulus of the hanger envelope

摘要

"All of the mouth of the well for communication with the annulus of the hanger envelopeThe present invention relates to a set of mouth of pit submarine that presents the communication capabilities of the outer surface of an outer housing of the mouth of the shaft with an annular space D.The wrapper. The seals between the housing internal and external of the mouth of the well define an annular chamber when the inner housing from the mouth of the well founded.The outer housing of the mouth of the well has a communication port formed through one of its side walls.The internal housing from the mouth of shaft has a passage extending from the annular chamber to the orifice of the internal housing from the mouth of the well.The annular space of the wrapper located radially inside the internal housing from the mouth of the well is in communication with the external surface of the outer housing of the mouth of the well through the PASage, the annular chamber between the seals and the communication port.