Methods and systems for performance of subterranean operations using dual string pipes
US9856706B2 · kind B2 · utility
0Cited by
10References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2012 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Aug 14, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and systems for delivery and retrieval of fluids to and from a downhole location are disclosed. A dual string pipe (202) is provided which comprises an outer pipe (206), an inner pipe (204) positioned within the outer pipe, and a bottom hole assembly (210) fluidically coupled to the outer pipe and the inner pipe. A diverter sub (208) is coupled to the inner pipe and is selectively operable in a normal drilling mode and a high flow mode. In the normal drilling mode a fluid is directed downhole through the inner pipe and in the high flow mode a return fluid is directed uphole through the inner pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.