Using dynamic underbalance to increase well productivity
US9605514B2 · kind B2 · utility
1Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2013 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Aug 20, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An underbalance pressure generator includes a housing having a first end and a second end and defines a piston chamber that extends between the first and second ends. A piston is movably arranged within the piston chamber, and one or more influx ports are defined in the housing at or near the second to enable fluid communication between the piston chamber and an exterior of the housing. A locking mechanism is arranged at or near the second end and capable of securing the piston at or near the second end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.