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Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation

Imported: 24 Feb '17 | Published: 06 Jan '04

Steven George Streich

USPTO - Utility Patents

Abstract

The present invention provides a method for drilling, analyzing, and stabilizing subsurface formations. The system is generally formed around a reusable bottomhole assembly (BHA) that provides an anchoring and thrust mechanism, furnishing the necessary downward force needed to provide comminution of geological material in a borehole. The BHA is conveyed into the borehole via a communications link wireline equiped with internal power and data telemetry lines. The BHA permits the use of multiple comminution sampling and analysis tools via a coupling device. The BHA and communications link wireline are mounted so as to couple with different tools. The main drilling mechanism is a torque drive assembly powered coring tool. A borehole televiewer and/or logging analysis tool may follow each coring period. The final step in each coring period is a wellbore consolidation technique. This series of steps is then repeated, each time coring the wellbore to a deeper depth.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

A better understanding of the present invention can be obtained when the following detailed description of the preferred embodiment is considered in conjunction with the following drawings:

FIG. 1 is a schematic of a landing craft assembly constructed in accordance with a preferred embodiment of the present invention; and

FIG. 2 is a schematic of a bottomhole assembly configured for use with the landing craft of FIG.

1.

Claims

1. A remotely operable drilling apparatus to investigate a formation, the drilling apparatus comprising:

2. The apparatus of claim 1, wherein the landing craft further includes a rotating base that enables said bottomhole assembly to couple and decouple with different tools.

3. The apparatus of claim 1, wherein the landing craft further includes a reel that stores and extends/retracts said communications link.

4. The apparatus of claim 1, wherein the extension/retraction mechanism can be operated to bear on said tool.

5. The apparatus of claim 1, wherein the torque drive assembly comprises an electric motor.

6. The apparatus of claim 1, wherein the tool comprises a coring bit.

7. The apparatus of claim 1, wherein the tool comprises a logging/analysis tool for acquiring well data that is used to characterize the surrounding formation and operation of the well.

8. The apparatus of claim 1, wherein the tool comprises a televiewer for recording images of the borehole.

9. The apparatus of claim 1, wherein the tool comprises a wellbore stabilization tool for preventing the wellbore from collapsing.

10. The apparatus of claim 9, wherein the wellbore stabilization tool comprises a rock melting penetrator.

11. The apparatus of claim 1, wherein the communications link comprises a wireline cable.

12. The apparatus of claim 1, wherein the communications link comprises a composite tube.

13. The apparatus of claim 1, further including a blowout preventer.

14. The apparatus of claim 1, wherein the landing craft further includes analysis equipment.

15. A remotely operable drilling apparatus to investigate a formation, the drilling apparatus, comprising:

16. The apparatus of claim 15, wherein the landing craft further includes a rotating base that provides rotation of said bottomhole assembly, so as to couple and decouple with different tools.

17. The apparatus of claim 15, wherein the extension/retraction mechanism can be operated to apply a downward force to said tool.

18. The apparatus of claim 15, wherein the torque drive assembly comprises an electric motor.

19. The apparatus of claim 15, wherein the tool comprises a drill bit.

20. The apparatus of claim 19, wherein the tool comprises a coring bit.

21. The apparatus of claim 15, wherein the tool comprises a logging/analysis tool.

22. The apparatus of claim 15, wherein the tool comprises a televiewer.

23. The apparatus of claim 15, wherein the tool comprises a wellbore stabilization tool.

24. The apparatus of claim 23, wherein the wellbore stabilization tool comprises a rock melting penetrator.

25. The apparatus of claim 15, wherein the communications link comprises a wireline cable.

26. The apparatus of claim 15, wherein the communications link comprises a composite tube.

27. The apparatus of claim 15, further including a blowout preventer.

28. The apparatus of claim 15, wherein the landing craft further includes analysis equipment.

29. A method for drilling a remote formation, comprising: