Docking receiver of a zone isolation assembly for a subsurface well
US7556097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2007 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Oct 17, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A docking receiver (48) for a subsurface well (12) having a fluid inlet structure (29), a riser pipe (30) and a docking apparatus (50) includes an upper section (372A) and a lower section (374A). The upper section (372A) is secured to the riser pipe (30). The lower section (374A) is secured to the fluid inlet structure (29). The lower section (374A) receives the docking apparatus (50) into an engaged position wherein fluid communication between a first zone (26) and a second zone (28) of the well (12) is inhibited. The lower section (374A) includes a contact surface (376A) and a distal region (377A). The contact surface (376A) contacts the docking apparatus (50) when the docking apparatus (50) is in the engaged position. The distal region (377A) is positioned more distally from a surface region (32) of the well (12) than the contact surface. The lower section (374A) can have a lower inner diameter (380UD, 380LD) that varies within the distal region (377A). When the docking apparatus (50) is not in the engaged position with the docking receiver (48), the first zone (26) is in fluid communication with the second zone (28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.