Using a horizontal circular wellbore to improve oil recovery
US5988278A · kind A · utility
34Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 2, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for increasing the recovery of oil from a subterranean formation having at least one producer wellbore drilled therein, whereby a generally horizontal and generally circular wellbore is drilled so that oil is located between the generally horizontal and generally circular wellbore and the at least one producer wellbore. Fluid is injected through the generally horizontal and generally circular wellbore into the formation so that oil is swept to the at least one producer wellbore for recovery through the at least one producer wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.