Bottom hole assembly with ported completion and methods of fracturing therewith
US8613321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2010 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A ported completion and method for use in fracturing multi-zone wells. A casing assembly having a plurality of casing lengths and one or more collars positioned so as to couple together the casing lengths. The collars may be a tubular body having an inner flow path, one or more fracture ports configured to provide fluid communication between an outer surface of the collar and the inner flow path, one or more valve holes intersecting the fracture ports, one or more valve vent holes positioned to provide fluid communication between the valve holes and the inner flow path, and one or more valves positioned in the valve holes for opening and closing the fracture ports. The valves are configured to open when a pressure differential is created between the fracture ports and the valve vent holes. The valve vent hole may be an annulus around the perimeter of the tubular body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.