Petroleum extraction from hydrocarbon formations

Details Petroleum extraction from hydrocarbon formations Petroleum extraction from hydrocarbon formations

2006-04-13

2009-11-24

Dang, Hoang (Department: 3672)

Wells

Processes

Distinct, separate injection and producing wells

C166S050000, C166S272700

Reexamination Certificate

active

07621326

ABSTRACT:
Recovery of viscous hydrocarbon by hot fluid injection from subterranean formations is assisted by using a specially designed and under-reamed vertical well to form a central production cavity; combined with a plurality of specially perforated horizontal wells drilled from the surface down to the producing formation, and then drilled laterally to intersect and be operatively connected to the central production well cavity. These continuous horizontal uniwells™ behave as single wells with two wellheads, each with multiple injection-production perforation pairs, between which the controlled flow of hot oil via a specialized annular communication zone. The production process is controlled by modulating the hot oil flow where the wellbore fluids act as a hydraulic “P-trap” seal limiting steam bypass. The hot displaced oil is allowed to drain from the lateral horizontal wells in to the central collection cavity.

REFERENCES:
patent: 3386508 (1968-06-01), Bielstein et al.
patent: 4099570 (1978-07-01), Vandergrift
patent: 4270609 (1981-06-01), Choules
patent: 4368781 (1983-01-01), Anderson
patent: 4460044 (1984-07-01), Porter
patent: 4572299 (1986-02-01), Vanegmond et al.
patent: 5016710 (1991-05-01), Renard et al.
patent: 5074360 (1991-12-01), Guinn
patent: 7100687 (2006-09-01), Pauley

Affiliated with

Also associated with

Rating

Petroleum extraction from hydrocarbon formations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Petroleum extraction from hydrocarbon formations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Petroleum extraction from hydrocarbon formations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4128588