Abstract: An annular seal configured to prevent fluid from outside the wellbore from entering a well head stuffing box and tripping an anti-pollution control device. The seal comprising an elastomeric material and having a seam configured to allow the seal to installed on or in a stuffing box without dismantling well-head equipment.

Abstract: A system includes a pressure ring positioned to abut a fluid end face, the pressure ring having a pressure ring bore with a diameter larger than a fluid end bore diameter. The system also includes an adjacent ring coupled to a fluid end, the pressure ring positioned between the adjacent ring and the fluid end face. The system further includes a face seal positioned at an interface of the pressure ring and the fluid end face, the face seal containing pressurized fluid associated with the fluid end. The system also includes packing material positioned within at least a portion of the pressure ring bore.

Abstract: By applying material on only one side in the case of a revision, seal rings can be easily rebuilt and reused.

Abstract: An ejection nozzle member attached to a vehicle-mounted camera is formed from an elastic material, and includes a cover member mounted on an upper surface of a casing, the cover member having therein an air passage to which compressed air is supplied. A pair of seal members are formed in an air ejecting unit, from which the compressed air is ejected, on outer sides of the air passage in a widthwise direction. The seal members are formed in lip shapes, protruding downward and toward the center in the widthwise direction on a side of the air passage. When the ejection nozzle member is attached to the camera, distal ends of the seal members are placed in contact mutually on the side of the air passage, and are pressed toward the casing by the compressed air that flows in the air passage to thereby be placed in intimate contact therewith.

Abstract: Wear sleeves and methods of using and installing such sleeves within a tubing hanger in a production wellhead assembly. A method includes positioning a wear sleeve around a polished rod and within a tubing hanger in a production wellhead assembly, the wear sleeve defining a production fluid passage. A wear sleeve includes an outer part with pin threading sized to fit uphole facing box threading in an internal bore of a tubing hanger; an inner part defining a polished rod passage, the inner part comprising sacrificial material; a keyway defined on an uphole facing surface of one or both the outer part and the inner part; and a production fluid passage defined in use by one or more of the outer part or the inner part.

Abstract: An apparatus including a housing, a shaft rotatably extending through the housing, and a rotary seal assembly contained within the housing for providing a seal between the housing and the shaft. The shaft is capable of an amount of tilting within the housing about a tilting focal point which is axially located along the housing at an axial focal point position. The rotary seal assembly is axially located along the housing at an axial rotary seal position. The axial rotary seal position is substantially axially coincident with the axial focal point position.

Abstract: A wireline pressure control apparatus for use in an oil or gas well, comprising a grease injector having first and second tubes (10) and a bore (12), and a grease injection channel in communication with the bore for injecting grease between the outer surface of the wireline and the inner surface of the bore. The bore (12) has radial passages (15) at spaced apart locations providing a leak path for fluids between the inner surface of the bore and the outer surface of the tubes, allowing pressure to equalize. The radial passages are in fluid communication with one another outwith the bore.

Abstract: A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

Abstract: An improved shaft assembly with a rigid component for facilitating sealing is disclosed. The shaft assembly includes a housing, a cap connected to the housing, a shaft operably positioned in the housing, first and second sealing elements, and the rigid component fixedly attached to the first sealing component. The first and second sealing components are in contact with the housing and the shaft. The rigid component is in contact with the first sealing component and the cap, so as to prevent the first sealing component from extruding outside the cap when the shaft reciprocally moves relative to the housing.

Abstract: A cap assembly for sealing the open end of a well casing or other pipe includes a top plate for mounting on the open end of the pipe, a bottom plate spaced apart from the top plate, an upper expansible gasket sandwiched between the top plate and an upper clamping plate, a lower expansible gasket sandwiched between the bottom plate and a lower clamping plate, spacer sleeves extending between the clamping plates, bolts through the bottom plate, both gaskets and clamping plates, the sleeves and the top plate, and nuts on the bolts. When the bolts are tightened on the nuts, the gaskets expand to seal the pipe at spaced apart locations.

Abstract: A motor shroud for an electric submersible pump is described. A motor shroud includes a shroud collar secured around a base of a centrifugal pump, the shroud collar including a plurality of sealant pathways extending around an inner surface and an outer surface of the shroud collar, wherein at least one of the plurality of sealant pathways has an aperture extending radially through the shroud collar between the inner surface and the outer surface, a shroud hanger tubularly surrounding the outer surface and fixedly coupled to a shroud jacket, the shroud hanger including a sealant entry port, and a sealant occupying a first space between the shroud hanger and the shroud collar and a second space between the shroud collar and an intake of the centrifugal pump, wherein the sealant cures from an aerosol spray to form a hardened foam barrier to a flow of well fluid.

Abstract: A wellhead seal assembly that forms a metal-to-metal seal between inner and outer wellhead members. A seal member has inner and outer walls separated by a slot, where the slot has an upper portion that is wider than a lower portion of the slot. An energizing ring having an upper end portion and a nose is moved into the slot, where the upper end portion has a greater cross-sectional thickness than the nose. As the energizing ring is moved into the slot, the nose of the energizing ring engages the lower portion of the slot to form a lock against the walls of the inner and outer wellhead members, and the upper end portion of the energizing ring engages the upper portion of the slot to form a seal against the walls of the inner and outer wellhead members.

Abstract: A sealing member including a body having a recess; one or more backups extending from the body and tapering over a length thereof; and a sealing element disposed in the recess, the element including one or more steps, each step being adjacent one of the one or more backups and on a surface of the sealing element intended to make contact with a target sealing surface.

Abstract: A stuffing box isolation apparatus and method for use with a stuffing box at a wellhead. The stuffing apparatus includes an anchor component that secures the apparatus within the stuffing box, when inserted into an open bore of a stuffing box. The apparatus further includes a sealing element that is expandable to sealingly engage an inner surface of the stuffing box. The expansion of the sealing element effectively seals the open bore of the stuffing box, preventing release of wellbore fluids and/or back-flow of the produced fluids.

Abstract: A system for cooling packing material utilized for sealing a shaft moving therethrough is described. The packing material held in place by at least one packing cup, wherein a coolant is directed axially through a significant volume of each packing cup close to the packing material. The present system finds use for compressors and pumps where pressure requirements of the fluids acted upon demand the use of packing materials in close contact with the moving shafts.

Abstract: A wellhead seal assembly forms a metal-to-metal seal between inner and outer wellhead members. A metal seal ring has inner and outer walls separated by a slot. An energizing ring has a C-ring captured on its outer surface. When the energizing ring is moved further into the slot, the C-ring is forced from its pocket and engages a profile on the seal ring, locking the energizing ring to the seal assembly.

Abstract: The present invention relates to a split seal for a progressive cavity pump (PCP) drive head stuffing box. In one embodiment, a mechanical seal assembly for a pump is provided. The mechanical seal assembly includes a seal housing; first and second semi-annular mechanical seals, each at least partially disposed in the seal housing bore, and a seal sleeve rotatable relative to the seal housing; third and fourth semi-annular mechanical seals, each disposed at least partially in the seal sleeve bore, at least one of the third and fourth seals rotationally coupled to the seal sleeve; and one or more biasing members biasing the mechanical seals into engagement.

Abstract: As may be used in a positive displacement pump system, a capped stuffing box assembly includes a stuffing box mountable to a discharge tee to prevent pumped fluid from escaping collection via the discharge tee. The stuffing box is capped by a drain cup that may be releasably mounted to the stuffing box and fixedly mounted to a drive pump motor frame, the drain cap having a drain port to communicate leakage upon failure or pre-failure of the seals in the stuffing box. Upon such failure, the stuffing box may be removed from the drain cap and replaced, while alignment between the actuating rod, drive motor, pump actuator, and drain cap is maintained.

Abstract: A seal for use in sealing on a wellhead assembly, where the seal is pressure energized and comprises an annular element having an inverted portion on its outer portion along its length. The seal may further include upper and lower ring members sandwiching the element between the ring members. The seal is formable by adjoining the open surfaces of two “W” shaped annular seals along their edges thereby forming an element responsive to pressure.

Abstract: A seal cartridge and barrel manifold seal are provided for use in a subterranean well and in a method to inject fluid, that is initially produced into the well from a subterranean formation or zone, into another subterranean formation or zone. The seal cartridge has two distinct annular seals positioned within opposite sides of a unitary housing to inhibit fluid flow through the housing in both axial directions along a rod that is positioned through the housing. A barrel seal manifold is provided that is unitary in design and has tapered flow surfaces thereby provided increased strength, flow dynamics and life.

Abstract: The present invention relates to a split seal for a progressive cavity pump (PCP) drive head stuffing box. In one embodiment, a mechanical seal assembly for a pump is provided. The mechanical seal assembly includes a seal housing; first and second semi-annular mechanical seals, each at least partially disposed in the seal housing bore, and a seal sleeve rotatable relative to the seal housing; third and fourth semi-annular mechanical seals, each disposed at least partially in the seal sleeve bore, at least one of the third and fourth seals rotationally coupled to the seal sleeve; and one or more biasing members biasing the mechanical seals into engagement.

Abstract: An articulated seal for use with polished rod and rotary drive head assemblies is described. In particular, an articulated seal assembly or system 10 is described which seals a rotating drive head and polished rod between high pressure internal fluids within a well 12 and the exterior while absorbing the normal wobble motion of a rotating polished rod.

Abstract: A sealing system for sealing with a generally cylindrical surface 52 of a tubular or another tool 50 includes an annular packer element 10, a wedge ring 60 having a substantially conical outer surface 62 configured to radially expand the packer element, and a positioner 40 for moving one of the packer element and wedge ring relative to the other packer element and wedge ring. The packer element 10 includes an first elastomeric seal body 20 axially supported on a first metal rib 14 extending radially from a metal base 12, and a second seal body 22 axially supported on a second metal rib 16. The second seal body 22 has an elasticity lower than that of the first seal body. According to the method of the invention, the positioner is moved to cause the first seal body 20 to sealingly engage the cylindrical surface, and hydraulic forces due to that sealing engagement then move the packer element to the expanded diameter sealing position, in which the second seal body 22 seals against the cylindrical surface.

Abstract: A sealing ring packing (1) includes a cooled packing casing (4) that can be placed inside a stuffing box borehole (3), and holds at least one essentially annular slide ring (5) pressed against the moved component (2) to be sealed, whose outside periphery (11) exhibits at least one heat transfer sleeve (9) expandable until resting on the inside periphery of the stuffing box borehole (3) when inserted, and which is otherwise not separately cooled. This makes it possible to avoid the disadvantages of a separate liquid cooling in this area without impermissible temperature rises.

Abstract: A stripper packer includes a main body having a first end and a second end. A passage extends through the main body from the first end to the second end, thereby facilitating the passage of coiled tubing through the main body when the coiled tubing is being stripped in and out of a well bore. A primary sealing element encircles the passage. A secondary sealing element encircles the passage. A piston is positioned within the main body. Movement of the piston in a first direction toward the first end of the main body applies a compressive force to the primary sealing element thereby causing the primary sealing element to expand inwardly to form a circumferential seal around the coiled tubing. Movement of the piston in a second direction toward the second end of the main body applies a compressive force to the secondary sealing element thereby causing the secondary sealing element to expand inwardly to form a circumferential seal around the coiled tubing.

Abstract: A self aligning stuffing box for pump jacks includes a first tubular body having an interior bore with internal stops. A second tubular body has a first end with a concave contact surface. The second tubular body is telescopically received within the first tubular body with the concave contact surface precluded from withdrawal by the internal stops. An annular body is received within the interior bore of the first tubular body. The annular body has a convex contact surface which engages the concave contact surface of the second tubular body. A third tubular body is received within the first tubular body and exerts a compressive force upon the annular body to maintain the convex contact surface engaged with the concave contact surface of the second tubular body during relative movement.

Abstract: A packing arrangement for a reciprocating pumps, particularly oil well pumps, in which a stuffing box housing contains a pressure chamber, packing seals mounted within the pressure chamber, a pump rod extending through the housing and the packing seals within said pressure chamber in a manner permitting reciprocation of the rod, utilizes pressure amplification feature by which tubing pressure is amplified in an appropriate ratio and applied to the packing seals to insure that they are correctly compressed at all times without producing a binding of the packing seals with the pump rod. Furthermore, the stuffing box is mounted to the well head in a manner which permits a floating self-alignment upon loosening of a few bolts. Additionally, a venturi connection is provided which flushes the underside of the packing area so as to keep it free and clear of debris buildup.

Abstract: The invention relates to downhole rotary pumping arrangements and more particularly to drivehead gimbals and seals used in the driveheads of downhole rotary pumps. The gimbal and seal system described enables the wobble of a rotating shaft to be absorbed without compromising the seal around the shaft.

Abstract: A tubular connection, an example of which is a subsea wellhead having a primary and secondary seal areas allows the use of a backup or contingency gasket for engagement with the secondary seal area in the wellhead should a failure occur in the primary seal area. In the preferred embodiment, the primary and secondary seal areas are sufficiently separated such that the erosion damage which occurs from leakage with the original gasket adjacent the primary seal area, which can spread below the primary seal area, leaves the secondary seal area unaffected. A backup or contingency gasket can be inserted for sealable contact with the secondary sealing area for further well operations.

Abstract: Stuffing boxes for use with reciprocating or rotating pump rods for downhole pumps include a lower housing adapted to be mounted on a wellhead and provided with internal bores for receiving the pump rod and a packing housing engaged with the lower housing and including a central bore for receiving a packing assembly and a packing gland. The packing gland may include an annular flange for supporting circumferentially spaced bolts engageable with cooperating bores in the packing housing to adjust compression on the packing and to provide for rotatably indexing the gland to minimize uneven wear. An axially slidable bushing mounted in the packing housing or lower housing is engageable with the opposite end of the packing assembly and is provided with a transverse annular shoulder engaged by a bias spring for exerting compression forces on the packing assembly. The bushing includes a transverse end face exposed to pressure fluid to also urge the bushing into engagement with the packing assembly.

Abstract: A seal system for an oil well head, wherein the shaft rotates about its axis to drive a progressive cavity type pump. Primary and secondary polytetrafluoroethylene seals surround a sleeve that encircles the shaft. Pressure detectors connect to the space between the seals to detect leaks past the primary seal and signal a remote repair facility. The secondary seal assumes the sealing function while repairs are scheduled.