Method of heating a hydrocarbon resource including slidably positioning an RF transmission line and related apparatus

Patent metadata

Field	Value
Publication number	US-9328593-B2
Application number	US-201314076501-A
Country	US
Kind code	B2
Filing date	Nov 11, 2013
Priority date	Nov 11, 2013
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

A method for heating hydrocarbon resources in a subterranean formation may include positioning a tubular conductor within a wellbore in the subterranean formation and slidably positioning a radio frequency (RF) transmission line within the tubular conductor so that a distal end of the transmission line is electrically coupled to the tubular conductor. The method may also include supplying RF power, via the RF transmission line, to the tubular conductor so that the tubular conductor serves as an RF antenna to heat the hydrocarbon resources in the subterranean formation.

First claim

That which is claimed is:

1. A method for heating hydrocarbon resources in a subterranean formation comprising: positioning a tubular conductor within a wellbore in the subterranean formation; slidably positioning a radio frequency (RF) transmission line comprising an inner conductor surrounded by an outer conductor within the tubular conductor while the tubular conductor is within the wellbore so that a distal end of the transmission line is electrically coupled to the tubular conductor via first and second electrical contacts coupled respectively to the inner and outer conductors; and supplying RF power, via the RF transmission line, to the tubular conductor so that the tubular conductor serves as an RF antenna to heat the hydrocarbon resources in the subterranean formation.

2. The method of claim 1 , further comprising slidably removing the RF transmission line after supplying RF power.

3. The method of claim 2 , further comprising slidably positioning another RF transmission line within the tubular conductor so that a distal end of the another transmission line is electrically coupled to the tubular conductor.

4. The method of claim 1 , wherein the tubular conductor carries an electrical receptacle therein, the RF transmission line carries an electrical plug at the distal end thereof and comprising the first and second electrical contacts; and wherein slidably positioning the RF transmission line comprises slidably positioning the RF transmission line so that the electrical plug engages the electrical receptacle.

5. The method of claim 1 , wherein positioning the tubular conductor comprises positioning the tubular conductor with a tubular dielectric section therein so that the tubular conductor defines a dipole antenna.

6. The method of claim 1 , further comprising flowing at least one fluid through the tubular conductor.

7. The method of claim 6 , wherein flowing the at least one fluid comprises flowing the at least one fluid to control at least one of a temperature and pressure.

8. The method of claim 6 , wherein flowing the at least one fluid comprises flowing at least one of a dielectric fluid, a solvent, and a hydrocarbon resource.

9. A method for heating hydrocarbon resources in a subterranean formation having a wellbore therein and having a tubular conductor within the wellbore, the method comprising: slidably positioning a radio frequency (RF) transmission line comprising an inner conductor surrounded by an outer conductor within the tubular conductor while the tubular conductor is within the wellbore so that a distal end of the transmission line is electrically coupled to the tubular conductor via first and second electrical contacts coupled respectively to the inner and outer conductors; and supplying RF power, via the RF transmission line, to the tubular conductor so that the tubular conductor serves as an RF antenna to heat the hydrocarbon resources in the subterranean formation.

10. The method of claim 9 , further comprising slidably removing the RF transmission line after supplying RF power.

11. The method of claim 10 , further comprising slidably positioning another RF transmission line within the tubular conductor so that a distal end of the another transmission line is electrically coupled to the tubular conductor.

12. The method of claim 9 , wherein the tubular conductor carries an electrical receptacle therein, wherein the RF transmission line carries an electrical plug at the distal end thereof and comprising the first and second electrical contacts; and wherein slidably positioning the RF transmission line comprises slidably positioning the RF transmission line so that the electrical plug engages the electrical receptacle.

13. The method of claim 9 , further comprising flowing at least one fluid through the tubular conductor.

14. An apparatus for heating hydrocarbon resources in a subterranean formation having a wellbore therein, the apparatus comprising: a tubular conductor positioned within the wellbore and having first and second electrical contacts; a radio frequency (RF) transmission line comprising an inner conductor surrounded by an outer conductor and having third and fourth electrical contacts coupled respectively to said inner and outer conductors and carried at a distal end thereof slidably positioned within said tubular conductor so that said first and second electrical contacts engage said third and fourth electrical contacts; and an RF power source configured to supply RF power, via said RF transmission line, to said tubular conductor so that said tubular conductor serves as an RF antenna to heat the hydrocarbon resources in the subterranean formation.

15. The apparatus of claim 14 , wherein said tubular conductor has a tubular dielectric section therein defining a dipole antenna.

16. The apparatus of claim 14 , wherein said tubular conductor defines a fluid passageway.

17. The apparatus of claim 14 , further comprising at least one of a temperature sensor and a pressure sensor associated with said tubular conductor.

Assignees

• Harris Corp

Inventors

• Wright Brian

Classifications

• E21B36/00

  Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones · CPC title

• E21B43/2401 Primary

  by means of electricity · CPC title