Apparatus and method for injecting fluid into a well
US4371038A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Feb 1, 1983 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S166/902
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An injection assembly includes a packer set in the casing adjacent to the producing zone, having a bore sized to receive production tubing. A portion of the assembly suspended from the string of production tubing includes a side pocket mandrel, a twin flow head, an extensible telescoping housing, and coacting joint means on the extensible housing and the packer for axial joining of these members. The side pocket mandrel, twin flow head, and twin flow converter provide a first passage joined to the production tubing; and a length of inner tubing joined to the twin flow converter extends this passage down into the bore of the packer. These members provide a second passage beginning at the side pocket mandrel and opening to the annulus between the casing and the string of production tubing, and extending downward to the packer through the annulus between the inner tubing and the surrounding structure, which surrounding structure includes the outer housing of the twin flow converter, the extensible housing, the joint, and the packer mandrel. After joining to the packer the upper portion of the assembly is raised to extend the extensible housing and to raise the lower end of the inner t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.