One trip casing or liner directional drilling with expansion and cementing
US9022113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/108
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubular string is advanced with a bottom hole assembly as the hole is drilled and reamed in a desired direction with the aid of directional drilling equipment adjacent the bit. When the advanced tubular forms the desired lap to the existing tubular, the assembly can be configured to cement the tubular and expansion can then be accomplished to fill the annular space and enhance the cement bonding. The expansion equipment can create a bottom bell on the expanded tubular and expand the top end into a bell of the existing tubular so that a monobore is created as the process is repeated with each added string. Numerous variations are contemplated for each single trip including but not limited to the direction of expansion, whether cementing or expansion occurs first, reforming folded tubing in the hole as well as the nature of the expansion tool and pressure control when drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.