Apparatus for feeding perforation sealer balls and the like into well treating fluid
US4132243A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Jun 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5109
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for feeding perforation sealer balls into a stream of well treating fluid being pumped through a fluid flow line into a well, the apparatus having a housing, a tube in the housing for receiving sealer balls, the tube communicating with the fluid flow line for the passage of sealer balls from the tube into the flow line. There is provided a tubular sealer ball magazine that communicates with the tube for the transfer of sealer balls from the magazine into the tube. A plunger is reciprocably mounted in the tube for movement between a retracted position, in which the plunger is clear of the juncture of the magazine with the tube to allow a sealer ball to move into the tube, and an extended position, in which the plunger closes the juncture of the magazine with the tube and also ejects a ball from the tube and into the fluid flow line. In order to counterbalance the outward force imposed on the plunger by the high pressure well treating fluid, means responsive to the pressure of the well treating fluid is provided for applying an inwardly directed counterforce to the plunger that is substantially equal to the outward force. So that the apparatus can be adapted to the feeding …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.