One run reservoir evaluation and stimulation while drilling

Patent metadata

Field	Value
Publication number	US-10738600-B2
Application number	US-201715600126-A
Country	US
Kind code	B2
Filing date	May 19, 2017
Priority date	May 19, 2017
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A method for drilling a borehole penetrating an earth formation includes: drilling a first section of the borehole; notching a wall of the borehole in one or more selected locations with a selected type of notch using a notcher for defined local weakening of the formation; performing a local induced break-out test and/or local fracturing operation on an annulus section of the first section of the borehole between the drill string and a wall of the borehole using a test tool comprising a packer to provide formation stress-state data. The one or more locations is based on the formation stress-state data. The method further includes deriving stress-state of the formation and a fracturing parameter of the formation using the formation stress-state data and drilling a second section of the borehole using the derived stress-state and the fracturing parameter.

First claim

What is claimed is:

1. A method for constructing a borehole penetrating a formation, the method comprising:
drilling a first section of the borehole using a drill string coupled to a test tool;
notching the formation to form a notch using a notcher disposed on the drill string;
changing pressure at the notch using a pump in fluid communication with the notch and disposed in the first section of the borehole, wherein the pump is disposed in the test tool;
detecting a change of the notch using a sensor disposed on the test tool to provide sensor data; and
drilling a second section of the borehole with the drill string using the sensor data to construct the borehole;
wherein the sensor data is obtained with one run of the test tool through the first section of the borehole.

2. The method according to claim 1 , further comprising:
inflating a packer disposed on the test tool and proximate to the notch to isolate the notch in an annulus section;
wherein: the changing comprises decreasing pressure in the annulus section; and
the detecting comprises detecting a break-out in a wall of the borehole using a sensor to provide a direction of the break-out; and
sensing pressure in the isolated annulus when the break-out is detected using a pressure sensor disposed on the test tool to provide a break-out pressure.

3. The method according to claim 2 , wherein the sensor data comprises a direction of the break-out in the wall of the borehole.

4. The method according to claim 3 , further comprising estimating with a processor a direction of a maximum horizontal stress and a minimum horizontal stress using the direction of the break-out.

5. The method according to claim 4 , wherein drilling a second section of the borehole using the sensor data is based upon the direction of the maximum horizontal stress and the minimum horizontal stress.

6. The method according to claim 4 , further comprising estimating a magnitude of the maximum horizontal stress and the minimum horizontal stress using the break-out pressure.

7. The method according to claim 6 , further comprising adjusting a drilling parameter used in drilling the second section of the borehole based upon the magnitude of the maximum horizontal stress and the minimum horizontal stress using a controller.

8. The method according to claim 2 , wherein the packer comprises a first packer and a second packer that are configured to isolate the annulus section.

9. The method according to claim 2 , wherein the annulus section is isolated by the packer at one end and an end of borehole at the other end.

10. The method according to claim 1 , wherein the notch is in a substantially vertical section of the borehole.

11. The method according to claim 1 , wherein the constructed borehole comprises a build section.

12. The method according to claim 1 , wherein the notch is in a production section of the borehole.

13. The method according to claim 12 , wherein the production section is configured to produce geothermal power and a location of the notch is configured to be fractured to connect with another borehole.

14. The method according to claim 12 , wherein the production section is configured to produce hydrocarbons and a location of the notch is configured to be fractured to produce the hydrocarbons.

15. The method according to claim 1 , further comprising updating an entire reservoir formation model using stress-state data derived from the sensor data.

16. The method according to claim 1 , further comprising performing a reservoir stimulation while drilling operation to fracture only the notch based on not exceeding formation breakdown pressure (FBP) as derived from the sensor data.

17. The method according to claim 1 , deriving at least one of formation stress information and formation fracturing information using the sensor data.

18. The method according to claim 17 , wherein drilling a second section of the borehole comprises using at least one of the formation stress information and the formation fracturing information.

19. The method according to claim 1 , wherein notching comprises using the notcher to form a selected type of notch.

20. The method according to claim 1 , further comprising performing a local induced break-out test (LIBOT) on the formation using the test tool.

21. The method according to claim 1 , wherein detecting a change of the notch using a sensor to provide sensor data comprises imaging the notch over time and transmitting image data to a surface processing system.

22. The method according to claim 1 , further comprising performing a local fracturing test operation on the formation using the test tool.

23. An apparatus for constructing a borehole penetrating a formation, the apparatus comprising:
a drill string configured to drill a first section and a second section of the borehole;
a notcher disposed on the drill string and configured to notch the formation to form a notch;
a test tool coupled to the drill string and disposed in the first section of the boreholes;
a pump disposed in the test tool and in fluid communication with the notch, the pump being configured to change pressure at the notch;
a sensor disposed on the test tool and configured to detect a change of the notch to provide sensor data with one run of the test tool through the first section of the borehole; and
a drill rig configured to operate the drill string to construct the second section of the borehole using the sensor data.

24. The apparatus according to claim 23 , further comprising a controller configured to control one or more parameters for constructing the borehole based upon the sensor data.

25. The apparatus according to claim 24 , wherein the one or more parameters comprises a flow rate of drilling fluid flowing through the drill string.

26. The apparatus according to claim 23 , wherein the tool is configured to:
inflate a packer disposed on the test tool and proximate to the notch to isolate an annulus section;
decrease pressure in the annulus section;
detect the break-out in the wall of the borehole using the sensor to provide a direction of the break-out; and
sense pressure in the isolated annulus when the break-out is detected using a pressure sensor disposed on the test tool to provide a break-out pressure.

27. The apparatus according to claim 23 , wherein the sensor data comprises a direction of the break-out in the wall of the borehole and the apparatus further comprises a processor configured to estimate a direction of a maximum horizontal stress and a minimum horizontal stress using the direction of the break-out.

Assignees

• Lehr Joerg
• Grimmer Harald
• Wessling Stefan
• Baker Hughes A Ge Co Llc

Inventors

• Lehr Joerg
• Grimmer Harald
• Wessling Stefan

Classifications

• E21B33/12 Primary

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title

• E21B47/06

  Measuring temperature or pressure · CPC title

• G05B13/02

  electric · CPC title

• E21B49/006 Primary

  Measuring wall stresses in the borehole · CPC title