Unibody bypass plunger and valve cage with sealable ports
AssigneeFlowco Production Solutions, LLC
InventorsMitchell A. Boyd, Garrett S. Boyd
Life of this patent
Estimating the term…
Abstract
A bypass plunger includes a unibody, or one-piece hollow body and valve cage, retains a dart valve within the valve cage portion using a threaded retaining nut secured by crimple detents, and includes sealable flow parts. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during descent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and surfaced valve stems surfaced.
Claims20
A downhole tool for use in oil and gas wells, comprising:
- a cylindrical body configured to travel within tubing of the oil and gas well, the cylindrical body including an internal bore having a threaded portion and an outer surface having a crimple detent;
- and
- a retaining device having an exterior surface with external threads and a relieved space within the external threads,
- wherein the retaining device is secured to the cylindrical body by the mating of the external threads of the retaining device with the threaded portion of the cylindrical tubing and the crimple detent of the outer surface of the cylindrical body extending inwardly into the relieved space of the retaining device.
A method of manufacturing a downhole tool for use in oil and gas wells, comprising:
- providing a cylindrical body configured to travel within tubing of the oil and gas well, the cylindrical tubing body including an internal bore having a threaded portion and an outer surface having a crimple detent;
- and
- providing a retaining device having an exterior surface with external threads and a relieved space within the external threads,
- securing the retaining device to the cylindrical body by the mating of the external threads of the retaining device with the threaded portion of the cylindrical tubing and the crimple detent of the outer surface of the cylindrical body extending inwardly into the relieved space of the retaining device.
Dependencies are inferred from the claim text.