Abstract: A seal assembly including a first tubular having a sealing surface and a seal element run with the first tubular and displaced from the surface. The seal element initially has a radial dimension that forms a radially innermost or outermost sealing dimension of the first tubular for enabling the first tubular to be sealed with a second tubular radially disposed with the first tubular. A mechanism is included that is triggerable for reconfiguring the radial dimension of the seal element. The sealing surface of the first tubular operative forms the radially innermost or outermost sealing dimension of the first tubular when the radial dimension of the seal element has been reconfigured for enabling the sealing surface of the first tubular to receive a second seal element. A method of sealing tubulars is also disclosed.
Type:
Grant
Filed:
December 1, 2011
Date of Patent:
May 10, 2016
Assignee:
BAKER HUGHES INCORPORATED
Inventors:
Jason A. Allen, Nicholas J. Clem, Robert S. O'Brien, Aaron C. Hammer
Abstract: There is disclosed a submerged type pump which is vertically seated on the seating face arranged on the bottom of the fluid lifting column and is comprised of a motor section and a pump section with a casing in which the treating fluid may pass, wherein a check valve is arranged at a pump discharge port and an automatic switch valve is arranged on the top of the casing so that the automatic switch valve is released by closing the fluid lifting column with the pump seating face and the check valve to discharge the treating fluid suspended in the fluid lifting column.
Abstract: An improved seal assembly for sealing the annulus between a free-type downhole hydraulically actuated pump and the pump cavity within which the pump is telescopingly received downhole in a borehole. A connector body is affixed to the upper end of the pump, and a packer nose assembly is affixed to the upper end of the connector body. The connector body has a circumferentially extending groove formed thereabout, and a flow passageway wherein the connector body interconnects the interior of the hollow connector body to the inner wall surface of the groove. A resilient seal is received within the groove. The seal is quadrangular in cross-section.
Abstract: A downhole, hydraulically-actuated pump of the free type which is sealingly received within a cavity in such a manner that a plurality of spaced-apart annular chambers are formed. The chambers are used in conjunction with other passageways to control flow of fluid to and from the pump and the surface of the ground. This flow system provides a closed circuit for the power fluid going to and from the engine. The power fluid to the engine end flows down the tubing string within which the pump assembly is located and to which the cavity is connected. A second conduit conducts spent power fluid from the pump assembly back uphole to the surface of the ground, thereby providing a closed circuit for the flow of power fluid to and from the pump assembly. A third conduit extends from the cavity, back up to the surface of the ground, so that produced fluid from the pump end is forced to the surface of the ground.