US4638862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method for producing hydrocarbons from an earth formation during the RF retorting of a hydrocarbon stratum
Assignee: Texaco Inc
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Filing: 1985-10-10
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Granted: 1987-01-27
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Expires: 2005-10-10
Abstract
Abstract A method for obtaining a hydrocarbon liquid from a hydrocarbon strata of an earth formation traversed by a borehole wherein the hydrocarbon strata is subjected to RF electromagnetic energy retorting by locating metal tubing formed in a predetermined manner in that portion of the borehole traversing the hydrocarbon strata. Additional metal tubing formed in a conventional manner is connected with the metal tubing located in the borehole traversing hydrocarbon strata so that together they form a production stream. The hydrocarbon liquid from the borehole may be pumped through the production stream to the surface of the earth formation.
Inventors
- 👤 Kerry D. Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:17
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04; E21B17/00; E21B17/22; E21B43/00; E21B43/16; E21B43/24; E21B43/2401
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A method for obtaining hydrocarbon liquid from a hydrocarbon strata of an earth formation traversed by a borehole, said hydrocarbon strata being subjected to RF electromagnetic energy retorting, comprising the steps of: (a) forming metal tubing so as to create a tubing coil having a predetermined electrical inductance, (b) connecting straight metal tubing with the metal tubing of step (a) so that the tubing of steps (a) and (b) form a production string, and (c) pumping the hydrocarbon liquid from the borehole through the production string to the surface of the earth formation.
Claim 2
Independent Claim
93 words
A method for obtaining hydrocarbon liquid from a hydrocarbon strata of an earth formation traversed by a borehole, said hydrocarbon strata being subjected to RF electromagnetic energy retorting, comprising the steps of: (a) forming metal tubing so as to create a tubing coil having a predetermined electrical inductance, (b) connecting straight metal tubing with the metal tubing of step (a) so that the tubing of steps (a) and (b) form a production string, and (c) pumping the hydrocarbon liquid from the borehole through the production string to the surface of the earth formation.
Claim 3
Dependent Claim
20 words
A method as described in claim 1 further comprising the step of grounding all metal tubing located in the borehole.
Claim 4
Dependent Claim
42 words
A method as described in claim 1 in which the step of forming metal tubing so as to create a tubing coil is done in a manner so that the electrical inductance is related to the frequency of the RF electromagnetic energy.
Claim 5
Dependent Claim
22 words
A method as described in claim 3 further comprising the step of grounding all of the metal tubing located in the borehole.
Claim 6
Dependent Claim
40 words
A method as described in claim 1 in which the step forming metal tubing so as to create a tubing coil is done prior to locating the metal tubing coil in that portion of the borehole traversing the hydrocarbon strata.
Claim 7
Dependent Claim
43 words
A method as described in claim 5 in which the forming step includes forming sections of metal tubing to provide a plurality of coils, each coil having an electrical inductance, and connecting the coils of metal tubing with straight sections of metal tubing.
Claim 8
Dependent Claim
22 words
A method as described in claim 6 further comprising the step of grounding all of the metal tubing located in the borehole.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |