A flow tube for a control head for an apparatus (1) for forming a liquid seal around a conduit, cable or wire for intervention into a well, the flow tube comprising a flexible body (16) capable of stretching to accommodate localised variations in the external diameter of the conduit, cable or wire while maintaining a close contact with the external surface of the conduit, cable or wire.

A flow tube for a control head for an apparatus (1) for forming a liquid seal around a conduit, cable or wire for intervention into a well, the flow tube comprising a flexible body (16) capable of stretching to accommodate localised variations in the external diameter of the conduit, cable or wire while maintaining a close contact with the external surface of the conduit, cable or wire.

A method for managing a sequestration fluid including sequestering a fluid in a subsurface formation downhole of a caprock and downhole of a seal in a borehole, targeting a sample of formation fluid in the borehole uphole of the caprock and uphole of the seal in the borehole. A sequestration system including a borehole in a formation, the borehole extending downhole of a caprock, a string disposed in the borehole, a seal between the string and a wall of the borehole uphole of the caprock, and a port in the string uphole of the seal and the caprock, the port having access to a portion of the formation uphole of the caprock.

A method for managing a sequestration fluid including sequestering a fluid in a subsurface formation downhole of a caprock and downhole of a seal in a borehole, targeting a sample of formation fluid in the borehole uphole of the caprock and uphole of the seal in the borehole. A sequestration system including a borehole in a formation, the borehole extending downhole of a caprock, a string disposed in the borehole, a seal between the string and a wall of the borehole uphole of the caprock, and a port in the string uphole of the seal and the caprock, the port having access to a portion of the formation uphole of the caprock.

A tumbler ring apparatus, method, and system for deployment in a subterranean well at a setting location. The tumbler ring may have a generally oval shape with a major axis and a minor axis. The major axis defining a major diameter of the ring and the minor axis defining a minor diameter of the ring. The major diameter of the ring being larger than the inner diameter of the subterranean well at the setting location, and the minor diameter of the ring being smaller than the inner diameter of the subterranean well at the setting location. The ring is further configured to substantially deform to the inner circumference of the subterranean well at the setting location when tumbled by reducing the major diameter of the ring to cause the ring to generally take the shape of the inner circumference of the subterranean well.

A downhole motor or pump assembly that includes a housing that includes a metal. A stator that includes an elastomer compound with an uncured plasticizer is secured and sealed within the housing using an adhesive system that includes an adhesive and a dried film thickness of 2.5 mil to 7 mil. The assembly also includes a rotor rotatable within the stator. The motor or pump is operable by rotation of the rotor within the stator. In the case of a motor assembly, the motor assembly may be part of a drilling assembly that includes a drillstring and a drill bit to drill a borehole.

A downhole motor or pump assembly that includes a housing that includes a metal. A stator that includes an elastomer compound with an uncured plasticizer is secured and sealed within the housing using an adhesive system that includes an adhesive and a dried film thickness of 2.5 mil to 7 mil. The assembly also includes a rotor rotatable within the stator. The motor or pump is operable by rotation of the rotor within the stator. In the case of a motor assembly, the motor assembly may be part of a drilling assembly that includes a drillstring and a drill bit to drill a borehole.

A bellows assembly for a downhole tool includes a first seal ring, a second seal ring, and a bellows positioned at least partially between the first and second seal rings. The first seal ring, the second seal ring, and the bellows are integral with one another such that the bellows assembly is monolithic. The bellows is configured to expand and retract. The bellows is annular and has a diameter that varies over a length of the bellows. A material composition of the bellows varies over the length of the bellows.

A bellows assembly for a downhole tool includes a first seal ring, a second seal ring, and a bellows positioned at least partially between the first and second seal rings. The first seal ring, the second seal ring, and the bellows are integral with one another such that the bellows assembly is monolithic. The bellows is configured to expand and retract. The bellows is annular and has a diameter that varies over a length of the bellows. A material composition of the bellows varies over the length of the bellows.

A tandem seal adapter for a perforating gun assembly includes a housing having a first end adapted to be connected to a first perforating gun and a second end adapted to be connected to a second perforating gun. A port extends through a wall of the housing and is in communication with an interior of the first perforating gun. A tracer material is arranged in the port, and a retainer secures the tracer material in the port. Upon detonation of the first perforating gun, the retainer is displaced and the tracer material is expelled from the port by gas pressure produced by the detonation. A corresponding method of using a tandem seal adapter to disperse tracer material into a wellbore and a tool string employing such a tandem seal adapter are also provided.