Total in place hydrocarbon recovery by isolated liquid and gas production through expanded volumetric wellbore exposure +
US8122966B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 6, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Higher volumetric hydrocarbon exposed original or restored by miscible gas injection, solution gas saturated oil is recovered through enlarged expandable liner, sand screened wellbores by controlled wellbore to formation pressure maintained above recovering oils critical bubble point. Exclusively hydrocarbon formation liquids are differential pressure forced through centralizer held larger outer diameter liquid displacer into the production tubing, while maintaining gas volume, pressure, and solution gas saturation in the formation, for higher volume flow for total in place oil recovery. Injected downstructure waterdrive pressure (WDP) into oil or gas formations augments oil and/or gas production and recovery. Complete gas well de-liquefying is attained by flowing gas recovery through enlarged expandable liner and sand screened wellbores and up the wellbore annulus dry, while producing all liquids separately through the larger outer diameter liquid displacer into the production tubing, to be artificial lifted to surface, while waterdrive pressure (WDP) augments natural gas recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.