Transposition of logs onto horizontal wells

Patent metadata

Field	Value
Publication number	US-10428642-B2
Application number	US-201415505821-A
Country	US
Kind code	B2
Filing date	Oct 1, 2014
Priority date	Oct 1, 2014
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

In some embodiments, a method for transposition of logs onto a horizontal well path may include collecting vertical situational data from a plurality of depths of a vertical well in a geological formation and collecting horizontal situational data from a plurality of locations along the horizontal well path in the geological formation. The method further includes collecting geological data associated with the plurality of depths of the vertical well and generating pseudo-logs for the horizontal well path based on the plurality of depths and the associated geological data for the plurality of depths.

First claim

What is claimed is:

1. A computer-implemented method of predicting geomechanical properties of formations for fracturing operations, the method comprising:
drilling a portion of a first well along a vertical well path in a geological formation;
collecting, by a downhole tool coupled to a drill string disposed in the first well, vertical situational data and geological data associated with each of a plurality of depths along the vertical well path of the first well drilled in the geological formation;
drilling a portion of a second well along a horizontal well path in the geological formation;
collecting, by a downhole tool coupled to a drill string disposed in the second well, horizontal situational data from each of a plurality of locations along the horizontal well path of the second well drilled in the geological formation;
mapping the geological data associated with each of the plurality of depths of the vertical well path of the first well to a corresponding location in the plurality of locations along the horizontal well path of the second well, based on the vertical situational data that corresponds to the horizontal situational data collected for each location;
generating pseudo-logs for the horizontal well path of the second well, based on the vertical situational data, the horizontal situational data, and the mapped geological data for each of the plurality of locations along the horizontal well path;
estimating geomechanical properties of the formation surrounding the horizontal well path of the second well, based on the generated pseudo-logs; and
performing one or more stages of a fracturing operation along the horizontal well path of the second well, based on the estimated geomechanical properties of the formation.

2. The method of claim 1 , wherein collecting horizontal situational data comprises collecting gamma ray data from a gamma ray receiver deployed in the horizontal well path.

3. The method of claim 1 , wherein collecting horizontal situational data comprises collecting data from resistivity logs of the geological formation.

4. The method of claim 1 , wherein collecting horizontal situational data comprises collecting cuttings during a drilling process within the geological formation.

5. The method of claim 1 , wherein collecting horizontal situational data comprises collecting pulsed neutron logging data or density data.

6. The method of claim 1 , wherein the horizontal situational data represent different locations along a length of the horizontal well path.

7. The method of claim 1 , wherein collecting vertical situational data comprises collecting gamma ray data from a gamma ray receiver deployed in the first well along the vertical well path.

8. The method of claim 1 , wherein collecting vertical situational data comprises collecting data from resistivity logs.

9. The method of claim 1 , wherein collecting vertical situational data comprises collecting cuttings and core generated during a drilling process.

10. The method of claim 1 , wherein the geological data associated with each of the plurality of depths along the vertical well path is collected using a measure while drilling (MWD) or logging while drilling (LWD) tool coupled to the drill string disposed in the first well.

11. A computer-implemented method of predicting geomechanical properties of formations for fracturing operations, the method comprising:
generating a geological model corresponding to a geological formation;
drilling a portion of a first well along a vertical well path in the geological formation;
collecting, by a downhole tool coupled to a drill string disposed in the first well, vertical situational data from each of a plurality of depths along the vertical well path of the first well passing through the geological formation;
drilling a portion of a second well along a horizontal well path in the geological formation;
collecting, by a downhole tool coupled to a drill string disposed in the second well, horizontal situational data from each of a plurality of locations along the horizontal well path of the second well passing through the geological formation;
collecting geological data associated with each of the plurality of depths of the vertical well path of the first well based on the geological model;
mapping the geological data associated with each of the plurality of depths of the vertical well path of the first well to a corresponding location in the plurality of locations along the horizontal well path of the second well, based on the vertical situational data that corresponds to the horizontal situational data collected for each location;
generating pseudo-logs for the horizontal well path of the second well, based on the vertical situational data, the horizontal situational data, and the mapped geological data for each of the plurality of locations along the horizontal well path;
estimating geomechanical properties of the formation surrounding the horizontal well path of the second well, based on the generated pseudo-logs; and
performing one or more stages of a fracturing operation along the horizontal well path of the second well, based on the estimated geomechanical properties of the formation.

12. The method of claim 11 , wherein mapping the collected geological data comprises:
determining a first horizontal situational data point that is associated with a first vertical situational data point; and
assigning the geological data associated with the first vertical situational data point to the first horizontal situational data point.

13. The method of claim 11 , further comprising geosteering a drill bit during a drilling operation of the second well along the horizontal well path.

14. The method of claim 11 , wherein collecting geological data associated with each of the plurality of depths of the vertical well path based on the geological model comprises the collection and analysis of drill cuttings and/or performing a wireline logging operation to collect the geological data.

15. The method of claim 11 , further comprising computing production indices from the pseudo logs.

16. The method of claim 11 , further comprising ordering facies using clustering of the pseudo logs.

17. The method of claim 11 , further comprising estimating, at predetermined intervals along the horizontal well path, simulated reservoir volume in response to the pseudo logs.

18. The method of claim 11 , further comprising using the one or more production indices in an algorithm to select non-contiguous stage intervals to be fractured and perforation locations within each stage.

Assignees

• Halliburton Energy Services Inc

Inventors

• Carpenter Glenn F
• Buller Daniel Robert
• Jeffers Travis Lee
• Stringer Charles
• Quirein John Andrew
• Zhou Yi

Classifications

• G01V3/00

  Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation · CPC title

• E21B47/09 Primary

  Locating or determining the position of objects in boreholes or wells {, e.g. the position of an extending arm}; Identifying the free or blocked portions of pipes · CPC title

• G01V5/12

  using gamma or X-ray sources {(gamma sources using isotopes G21G4/00; X-ray tubes H01J35/00)} · CPC title

• G01V5/045

  Transmitting data to recording or processing apparatus; Recording data · CPC title

• G01V11/002

  Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant (means for transmitting well survey signals E21B47/12; signal transmission systems in general G08C; transmission in general H04B) · CPC title