Abstract: A wireline sealing assembly adapted to seal a line such as wireline or slickline deployed in an oil or gas well has a body to receive a line and a seal adapted to be actuated into sealing engagement with the line to contain wellbore pressure within the well below the actuated seal. The seal comprises first and second seal members, each seal member comprising at least one sealing element, wherein the first and second seal members are formed of different materials. The second seal member may have a greater hardness rating or lower degree of resilience that the first seal member. The first and second seal members may radially deform against the line when the seal is actuated, and the first seal member may radially deform more than the second seal member. The seal may also comprise a third seal member comprising at least one sealing element, wherein the third seal member is formed of a different material to the first and second seal members.

Abstract: A wireline sealing assembly adapted to seal a line such as wireline or slickline deployed in an oil or gas well has a body to receive a line and a seal adapted to be actuated into sealing engagement with the line to contain wellbore pressure within the well below the actuated seal. The seal comprises first and second seal members, each seal member comprising at least one sealing element, wherein the first and second seal members are formed of different materials. The second seal member may have a greater hardness rating or lower degree of resilience that the first seal member. The first and second seal members may radially deform against the line when the seal is actuated, and the first seal member may radially deform more than the second seal member. The seal may also comprise a third seal member comprising at least one sealing element, wherein the third seal member is formed of a different material to the first and second seal members.

Abstract: A swivel apparatus includes upper and lower housings having a passage therethrough operably connected with a coupling for selective relative rotation; at least one movable piston having a first position where the housings are rotationally locked to each other and a second position where the housings are free for relative rotation; the piston is retained to the upper housing with a retainer secured within and discrete from the upper housing, and the retainer is axially spaced from a bearing assembly.