System and choke valve actuator mechanism for operating a plunger lift well
US4617992A · kind A · utility
15Cited by
17References
4Claims
0Family size
Inventor
Key dates
| Filing date | May 3, 1985 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | May 3, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/121
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An operating system and choke valve actuator mechanism for a plunger lift gas and oil well having a casing and a tubing string. The actuator mechanism has a manual "low stage" setting for the choke valve so that low velocity gas will flow from the tubing string. The system has a control unit responsive to a pressure differential between casing gas (high) and tubing string gas (low) to move the actuator mechanism to a "high stage" setting for the choke valve so that high velocity gas and oil will flow for the tubing string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.