Modular plunger for a hydrocarbon wellbore
US10215004B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/121
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plunger device for a hydrocarbon wellbore is provided that has replaceable modular components that allow the function of the plunger device to be altered. Concentric sleeves and short sleeves may be selectively disposed about a chassis of the plunger device. One or more short sleeves may be removed to expose an entrance aperture which allows fluid flow to enter an interior volume of the chassis and pass through an exit aperture in the chassis. This configuration allows the plunger to descend down a bore hole more rapidly. However, a well operator may determine that it is advantageous to keep the short sleeve on the chassis to block the entrance aperture. Thus, the weight of the plunger overcomes the pressure in the borehole, and the plunger descends more slowly down the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.