A plunger including a plunger body having a radially directed flow hole disposed therein and a pin that is removable from the plunger body without destroying the pin or the plunger body, the pin shifts back and forth in the plunger body to block the flow hole in a first position and allow fluid to flow through the flow hole in a second position. The plunger also includes a clutch mechanism supported by the pin to control the force necessary to shift the pin in the plunger body and a bumper portion supported by a body of the pin to limit the travel of the pin in the plunger body during operational use of the plunger.
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 47/12 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
A plunger for use in an oil or gas well that includes a mandrel and a hollow body with radial directed ports disposed therein. The plunger also includes a variable flow mechanism that can be adjusted to achieve a desired fall rate for the plunger for a particular oil and gas operation. A method of lifting fluids from an oil and gas well using the plunger includes the step of employing an adjustable plunger to lift fluids from the oil and gas well wherein the adjustable plunger has a desired fall rate in the well.
A plunger for use in an oil or gas well that includes a mandrel and a hollow body with radial directed ports disposed therein. The plunger also includes a variable flow mechanism that can be adjusted to achieve a desired fall rate for the plunger for a particular oil and gas operation. A method of lifting fluids from an oil and gas well using the plunger includes the step of employing an adjustable plunger to lift fluids from the oil and gas well wherein the adjustable plunger has a desired fall rate in the well.
F04B 47/12 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
The disclosure relates to an end fitting attachable to an end of a sucker rod. The end fitting includes a generally cylindrical body including a receptacle portion and a coupling portion along a longitudinal axis. The receptacle portion includes a receptacle extending inwardly from an open end surface of the body along the longitudinal axis for receiving the sucker rod end therein. The receptacle includes a plurality of wedge portions disposed therein and the coupling portion extends from a coupling end surface of the body opposite the open end surface. The wedge portions each have a peak portion, a first angled portion and a second angled portion. Each second angled portion has an angle with respect to the longitudinal axis wherein each angle of the second angled portions increases from the open end surface of the receptacle portion toward the coupling portion of the end fitting.
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
The disclosure relates to an end fitting attachable to an end of a sucker rod. The end fitting includes a generally cylindrical body including a receptacle portion and a coupling portion along a longitudinal axis. The receptacle portion includes a receptacle extending inwardly from an open end surface of the body along the longitudinal axis for receiving the sucker rod end therein. The receptacle includes a plurality of wedge portions disposed therein and the coupling portion extends from a coupling end surface of the body opposite the open end surface. The wedge portions each have a peak portion, a first angled portion and a second angled portion. Each second angled portion has an angle with respect to the longitudinal axis wherein each angle of the second angled portions increases from the open end surface of the receptacle portion toward the coupling portion of the end fitting.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
The disclosure relates to an end fitting attachable to an end of a sucker rod. The end fitting includes a generally cylindrical body including a receptacle portion and a coupling portion along a longitudinal axis. The receptacle portion includes a receptacle extending inwardly from an open end surface of the body along the longitudinal axis for receiving the sucker rod end therein. The receptacle includes a plurality of wedge portions disposed therein and the coupling portion extends from a coupling end surface of the body opposite the open end surface. The wedge portions each have a peak portion, a first angled portion and a second angled portion. Each second angled portion has an angle with respect to the longitudinal axis wherein each angle of the second angled portions increases from the open end surface of the receptacle portion toward the coupling portion of the end fitting.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
8.
Plunger lift assembly with an improved free piston assembly
An improved free piston assembly for use in combination with a plunger lift assembly is provided. The piston assembly includes a sleeve member, a retention sleeve, and a flow restriction member. The sleeve member has an inner surface defining an opening for the flow of formation fluids. The opening includes a first section and a second section. The retention sleeve is configured to be affixed to the first section of the opening. The flow restriction member is not latched to the sleeve member and is configured to have an interference fit with the retention sleeve. The interference fit provides a force that is sufficient to overcome the force of gravity on the flow restriction member when formation fluid forces acting on the flow restriction member are decreased or removed. The second section of the opening is configured to prevent the passage of the flow restriction member.
F04B 47/12 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 31/00 - Free-piston pumps specially adapted for elastic fluidsSystems incorporating such pumps
The disclosure relates to an end fitting attachable to an end of a sucker rod. The end fitting includes a generally cylindrical body including a receptacle portion and a coupling portion along a longitudinal axis. The receptacle portion includes a receptacle extending inwardly from an open end surface of the body along the longitudinal axis for receiving the sucker rod end therein. The receptacle includes a plurality of wedge portions disposed therein and the coupling portion extends from a coupling end surface of the body opposite the open end surface. The wedge portions each have a peak portion, a first angled portion and a second angled portion. Each second angled portion has an angle with respect to the longitudinal axis wherein each angle of the second angled portions increases from the open end surface of the receptacle portion toward the coupling portion of the end fitting.
E21B 17/04 - CouplingsJoints between rod and bit, or between rod and rod
E21B 17/043 - CouplingsJoints between rod and bit, or between rod and rod threaded with locking means
E21B 17/046 - CouplingsJoints between rod and bit, or between rod and rod with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
Provided is an improved bypass durable dart plunger that descends faster in a hydrocarbon well, is capable of lifting more fluids and has a durable and replaceable clutch assembly. The various components of the durable dart plunger includes a sleeve, a dart body with a one or more flow ports (chokes) cut at right angles through the dart body, a pin and a replaceable clutch assembly (also referred to a retention assembly). The chokes can be of varying sizes. In one embodiment, the clutch assembly includes a plurality of clutch mechanisms wherein each mechanism includes a ball, a socket screw and a resilient spacer.
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
E21B 34/06 - Valve arrangements for boreholes or wells in wells
F04B 47/12 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
F04B 31/00 - Free-piston pumps specially adapted for elastic fluidsSystems incorporating such pumps
A plunger apparatus may include an upper cylindrical section, a plurality of through-holes, an elongated body, and a lower cylindrical section. The plurality of through-holes may be circumferentially arranged about the upper cylindrical section to provide passages for venting and releasing particulates that clog the plunger and barrel seal area. Further, the plunger apparatus may provide an undersized area circumferentially disposed about the upper cylindrical section for creating a point of relief and inducing swirling of particulates. An oversized area may also be provided for creating a point of increased pressure about the plunger apparatus.
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 53/14 - Pistons, piston-rods or piston-rod connections
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
12.
Plunger lift assembly with an improved free piston assembly
An improved free piston assembly for use in combination with a plunger lift assembly is provided. The improved free piston assembly includes a sleeve member, a flow restriction member, and retention means. In some embodiments of the invention the sleeve member has an inner surface that is contoured to provide a seat for the flow restriction member during lifting operations. The flow restriction member can be a ball held in the interior of the sleeve by retention means capable of overcoming the force of gravity but at the same time designed to release the flow restriction member when a rod of the plunger lift assembly contacts the flow restriction member. In one embodiment of the invention the retention means is a plurality of inwardly biased spring loaded held in place by a retention ring that is fittably received by a groove in the exterior surface of the sleeve. In other embodiments of the invention the retention means are in the form of a raised lip or a retention sleeve.
F04B 47/12 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
F04B 31/00 - Free-piston pumps specially adapted for elastic fluidsSystems incorporating such pumps
13.
Ball plunger lift system for high deviated wellbores
The invention generally relates to a plunger lift system that can be used in all type of oil and gas wells including wells of vertical, highly deviated, S-curved or horizontal bores. The plunger lift system has a ball-shaped plunger. Multiple ball plungers may be used for a single operation to lift liquid out of a wellbore. Certain embodiments further include a surface lubricator, associated piping and valve systems in communication with a pipeline, a surface control system and related equipment, a downhole bumper spring assembly and/or retrieval device having a magnet to retrieve the ball plunger of the wellbore if and when needed. The invention also relates to ball-shaped plungers and to methods for lifting liquid out of a wellbore employing such ball-shaped plunger. In certain embodiments, the ball plunger comprises a hole or a plurality of holes to aerate the fluid load.
In a hydrocarbon producing wellbore, liquids (oil, condensate, water of mixtures thereof) from the formation may accumulate and build up a hydrostatic pressure gradient, which can kill gas production. Various embodiments of the present invention include a plunger lift system that can remove said formation liquids from a wellbore. A piston, including a sleeve with a hollow passage may travel downhole, accumulate formation liquids and utilizing the gas pressure deliver said formation liquids to the top of the wellbore for removal. The piston face may be one single wall that closes the hollow passage or the piston face may be comprised of a plug and an seat that unite to form a complete piston face downhole. Aspects of the plunger lift system, for example the sleeve and or the plug may be at least partially formed from materials that are buoyant in the formation liquids.
A continuous composite fiberglass sucker rod for connection between a pump and a pump drive has a rectangular cross section. End fittings having a rod receiving cavity are connected to the rod ends using a curable adhesive. The rod fitting is maintained in a vertical position with the cavity facing upwardly. The rod end portion is positioned in the cavity with the end at the bottom of the cavity. Curable adhesive is introduced into the cavity. A centralizer bushing is used to maintain alignment of the rod relative to the cavity. A portable heating device receives the fitting and rod end portion and enhances the curing process.
B29C 65/00 - Joining of preformed partsApparatus therefor
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
B25G 3/34 - Attaching handles to the implements by pressing the handle on the implementsAttaching handles to the implements using cement or molten metal, e.g. casting, mouldingAttaching handles to the implements by welding or the like
F16B 11/00 - Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
F16B 12/04 - Non-loosenable joints for non-metal furniture parts, e.g. glued
F16L 13/00 - Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
G05G 1/12 - Means for securing the members on rotatable spindles or the like
An improved design and a method of assembly of end fittings to sucker rods which may be of conventional length or continuous sucker rods is described herein. The end fittings and rods are assembled so as to form wedges which enhance the connectability of the end fitting to the rod, and further, the wedge or wedges approach the rod asymptotically so as to avoid any abrupt discontinuities in the wedge or wedges thus substantially eliminating stress concentration areas and potential failure areas in the rod. The assembly method provides for integrity in the rod to end fitting assembly to promote longer connection life and fewer shop rejections and field failures.
B29C 65/00 - Joining of preformed partsApparatus therefor
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
B25G 3/34 - Attaching handles to the implements by pressing the handle on the implementsAttaching handles to the implements using cement or molten metal, e.g. casting, mouldingAttaching handles to the implements by welding or the like
F16B 11/00 - Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
F16B 12/04 - Non-loosenable joints for non-metal furniture parts, e.g. glued
F16L 13/00 - Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
G05G 1/12 - Means for securing the members on rotatable spindles or the like
An end fitting for sucker rods or continuous sucker rods defines a rod receptacle with an interior surface defining void spaces having an axial radius of curvature of at least twenty inches. In one form, the fitting receptacle defines two such void spaces and the radius of curvature differs between them.
A plunger lift for a hydrocarbon well includes a piston that is dropped into the well and then moved upwardly to lift liquid to the surface from adjacent a hydrocarbon formation. The piston includes a series of pads biased outwardly into engagement with an inside wall of the production string thereby providing an improved seal between the piston and the production string. The pads are biased outwardly by pressure from below or a pressure differential that is moving the piston upwardly. The force moving the pads outwardly are greater during upward movement of the piston than during downward movement. The piston includes a central one-piece mandrel having an upper end higher than any component of the piston and a lower end lower than any component of the piston so that impact forces are applied directly to the mandrel and not through a threaded component.
patents
