Patent ID: 11879315
Assignee: ANTELOPE DEVELOPMENTS, LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. A method of plunger lift comprising:
detecting arrival of a plunger within a lubricator using a sensor of a cap assembly coupled to the lubricator, wherein the sensor detects arrival of the plunger by detecting translation of a spring assembly translatable within the lubricator, the spring assembly including a spring and a spring follower, the spring follower disposed within the lubricator between a spring and the cap assembly; and
transmitting an arrival indicator from a controller in communication with the sensor and in response to detecting arrival of the plunger, wherein, when the arrival indicator is received by a fluid injection system, the fluid injection system injects fluid into a fluid inlet through an upper end of the cap assembly.