Systems and methods for optimized well creation in a shale formation

Patent metadata

Field	Value
Publication number	US-9234408-B2
Application number	US-201314240578-A
Country	US
Kind code	B2
Filing date	Feb 21, 2013
Priority date	Feb 21, 2013
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

An example method may include determining a first planned stimulation location within the formation. The first planned stimulation location may be based, at least in part, on a pre-determined model of a formation. A borehole in the formation may be drilled with a downhole tool. The first planned stimulation location may be adjusted based, at least in part, on data received at the downhole tool. Additionally, the downhole tool may stimulate the formation at the adjusted first planned stimulation location. A second stimulation location also may be determined based on data received at the downhole tool after stimulation of the formation at the adjusted first planned stimulation location.

First claim

What is claimed is:

1. A method for optimized well creation in a shale formation, comprising:
prior to drilling a borehole in the shale formation, generating a well plan based, at least in part, on a-priori data corresponding to the shale formation, wherein the well plan includes at least a first planned stimulation location and a second planned stimulation location uphole from the first planned stimulation location;
drilling the borehole in the shale formation with a downhole tool based, at least in part, on the well plan;
adjusting the first planned stimulation location based, at least in part, on data received at the downhole tool while the downhole tool is drilling the borehole;
after drilling is completed, moving the downhole tool uphole to the adjusted first planned stimulation location;
stimulating the formation at the adjusted first planned stimulation location with the downhole tool;
determining not to stimulate the formation at the second planned stimulation location based, at least in part, on data received at the downhole tool after the formation has been stimulated at the adjusted first planned stimulation location.

2. The method of claim 1 , wherein the downhole tool comprises:
a drill bit
a logging while drilling (LWD) assembly; and
a stimulation assembly.

3. The method of claim 2 , further comprising isolating the drill bit from the stimulation assembly using a ball and seat mechanism.

4. The method of claim 1 , further comprising:
determining an other stimulation location based, at least in part, on data received at the downhole tool after the formation has been stimulated at the adjusted first planned stimulation location.

5. The method of claim 1 , further comprising introducing a completion string into the formation, wherein the completion string is configured to align with the adjusted first planned stimulation location.

6. The method of claim 5 , wherein the completion string comprises at least one swell packer, and at least one opening that aligns with the adjusted first planned stimulation location.

7. A system for optimized well creation in a shale formation, comprising:
a bottom hole assembly (BHA), wherein the BHA comprises a drill bit and a logging while drilling LWD apparatus;
a stimulation assembly coupled to the BHA; and
a control unit in communication with the LWD apparatus, wherein the control unit comprises a processor and a memory device, wherein the memory device contains a set of instructions that, when executed by the processor, cause the processor to:
receive a well plan generated prior to drilling a borehole in the shale formation and based, at least in part, on a-priori data corresponding to the shale formation, wherein the well plan includes at least a first planned stimulation location and a second planned stimulation location uphole from the first planned stimulation location;
receive first data from the LWD apparatus during a drilling operation;
adjust the first planned stimulation location based, at least in part, on the first data;
receive second data from the LWD apparatus after the formation has been stimulated at the adjusted first planned stimulation location; and
determine not to stimulate the formation at the second planned stimulation location based, at least in part, on the second data.

8. The system of claim 7 , wherein the BHA is coupled to the stimulation assembly through an isolation assembly.

9. The system of claim 7 , further comprising a completion string, wherein the completion string is configured to align at least with the adjusted first planned stimulation location.

10. A method for optimized well creation in a shale formation, comprising:
prior to drilling a borehole in the shale formation, generating a well plan based, at least in part, on a-priori data corresponding to the shale formation;
drilling the borehole with a downhole tool, wherein the downhole tool comprises:
a drill bit;
a logging-while-drilling (LWD) assembly; and
a stimulation assembly;

after drilling is completed, isolating the drill bit from the stimulation assembly and moving the downhole tool uphole to a first location;
stimulating the formation at a first location using the stimulation assembly, wherein the first location comprises a first planned stimulation location of the well plan adjusted based, at least in part, on data received at the downhole tool;
after stimulating the formation at the first location, receiving first measurements from the formation at the LWD assembly;
determining whether to stimulate the formation at another location based, at least in part, on the first measurements, wherein determining whether to stimulate the formation at another location based, at least in part, on the first measurements comprises determining not to stimulate the formation at a second planned stimulation location uphole from the adjusted first planned stimulation location based, at least in part, on the first measurements.

11. The method of claim 10 , wherein isolating the drill bit from the stimulation assembly comprises using a ball and seat mechanism.

12. The method of claim 10 , wherein the stimulation assembly comprises a hydrajet fracture tool.

13. The method of claim 10 , wherein determining whether to stimulate the formation at an other location based, at least in part, on the first measurements comprises determining a new stimulation location based, at least in part, on the first measurements.

14. The method of claim 10 , further comprising introducing a completion string into the formation, wherein the completion string is configured to align with the adjusted first planned stimulation location.

15. The method of claim 10 , wherein the completion string comprises at least one swell packer, and at least one opening that aligns with the adjusted first planned stimulation location.

Assignees

• Halliburton Energy Services Inc

Inventors

• Fowler Jr Stewart H
• Sharma Amit
• Wendler Curtis E
• Holtzman Keith E

Classifications

• E21B7/00

  Special methods or apparatus for drilling · CPC title

• E21B47/12

  Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling · CPC title

• E21B41/0092 Primary

  Fixed Constructions · mapped topic

• E21B43/26 Primary

  by forming crevices or fractures · CPC title

• E21B41/00

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title