US4099783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for thermoshaft oil production
Assignee: Individual
•
Filing: 1975-12-05
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Granted: 1978-07-11
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Expires: 1995-12-05
Abstract
Abstract The method for thermoshaft oil production comprises the provision of a combination of mining holes above an oil-bearing bed which are inclined at from 1° to 3° to the horizon. Then injection holes are drilled from these mining openings for feeding a heating medium into the bed. After that, a slope and a footway leading to the bottom part of the oil-bearing bed are constructed, and a production gallery is provided within the bottom part of the bed. Horizontal and ascending holes are drilled from the production gallery for oil production. A heating medium is fed into the injection holes for uniform distribution thereof over the entire volume of the oil-bearing bed and for displacement of oil into the horizontal and ascending production holes towards the production gallery wherefrom the oil is fed up to the surface.
Inventors
- 👤 Vladimir Grigorievich Verty
- 👤 Pavel Grigorievich Voronin
- 👤 Evgeny Ivanovich Gurov
- 👤 Vitaly Semenovich Zubkov
- 👤 Nikolai Ivanovich Melnichuk
- 👤 Grigory Grigorievich Miller
- 👤 Vladimir Nikiforovich Mishakov
- 👤 Vitaly Stepanovich Sukrushev
- 👤 Leonid Mikhailovich Ruzin
- 👤 Vladimir Pavlovich Tabakov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:53
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/30; E21B43/305; E21C; E21C41/00; E21C41/16; E21C41/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A method for thermoshaft oil production of viscous oils or fluid bitumens wherein mining openings are provided above an oil-bearing bed at an overburden level comprising forming said mining openings with an inclination of from about 1° to about 3° to the horizon; drilling injection holes from said mining openings for feeding a heating medium into said oil-bearing bed; constructing a slope and a footway from at least one mine opening leading to the bottom part of said oil-bearing bed to a production gallery which is provided within the bottom part of said bed; drilling a system of horizontal and ascending holes for oil production from said production gallery; positively feeding a heating medium into said injection holes for uniform distribution thereof over the entire volume of said oil-bearing bed and for displacement of oil into said horizontal and ascending production holes towards said production gallery; and recovering the oil from said production gallery.
Claim 2
Independent Claim
154 words
A method for thermoshaft oil production of viscous oils or fluid bitumens wherein mining openings are provided above an oil-bearing bed at an overburden level comprising forming said mining openings with an inclination of from about 1° to about 3° to the horizon; drilling injection holes from said mining openings for feeding a heating medium into said oil-bearing bed; constructing a slope and a footway from at least one mine opening leading to the bottom part of said oil-bearing bed to a production gallery which is provided within the bottom part of said bed; drilling a system of horizontal and ascending holes for oil production from said production gallery; positively feeding a heating medium into said injection holes for uniform distribution thereof over the entire volume of said oil-bearing bed and for displacement of oil into said horizontal and ascending production holes towards said production gallery; and recovering the oil from said production gallery.
Claim 3
Dependent Claim
30 words
A method according to Claim 1, wherein said injection holes are vertical and inclined and are drilled from said mining openings for feeding a heating medium into said oil-bearing bed.
Claim 4
Dependent Claim
47 words
A method according to claim 1, wherein an injection gallery is constructed substantially within the top part of said oil-bearing bed from said mining openings with subsequent drilling, from said gallery, of horizontal and inclined in injection holes for feeding a heating medium into said oil-bearing bed.
Claim 5
Dependent Claim
12 words
A method according to claim 1, wherein said heating medium is steam.
Claim 6
Dependent Claim
20 words
A method according to claim 4, wherein said oil-bearing bed is heated to about 50°-95° C by said heating medium.
Claim 7
Dependent Claim
61 words
A method according to claim 5, wherein, after said temperature range is obtained, at regular intervals oil is recovered through said production holes, and a fluid, in the form of hot water and subsequently cold water, is fed to said injection holes to replace said steam, so as to continue the oil displacement and resultant recofery of same from said bed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |