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Method and Criteria for Trajectory Control

a trajectory control and trajectory technology, applied in the direction of electric controllers, surveyors, borehole/well accessories, etc., can solve the problem that the actual wellbore trajectory deviates from the design well path

Inactive Publication Date: 2016-10-27
HALLIBURTON ENERGY SERVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent is about a method for controlling the direction and trajectory of a drilling tool in wellbore drilling operations. The invention is about automating the control of a steerable drilling tool to drill along a planned trajectory, even if the actual wellbore trajectory deviates from the designed path due to unexpected reasons. The invention uses a PID controller to adjust the process control outputs and minimize the error between the measured process variable and the desired setpoint. The invention also includes a system for implementing the method and various examples of how the method can be used in different wellbore environments. The technical effect of the invention is to improve the accuracy and efficiency of wellbore drilling operations.

Problems solved by technology

During the drilling operation, it is not uncommon that the actual wellbore trajectory deviates from the designed well path due to unexpected reasons.

Method used

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Examples

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Effect test

example one

[0092]A computer-implemented method for performing automated downhole wellbore trajectory control for correcting between an actual wellbore trajectory path and a planned wellbore trajectory path, the method comprising: receiving real-time path data for determining the actual wellbore trajectory path; receiving parameters for the planned wellbore trajectory path; determining whether the actual wellbore trajectory path deviates from the planned wellbore trajectory path; responsive to a determination that the actual wellbore trajectory path deviates from the planned wellbore trajectory path, determining whether the actual wellbore trajectory path deviates from a correction path; responsive to a determination that the actual wellbore trajectory path deviates from the correction path; determining a target point along the planned wellbore trajectory path for modifying the correction path; determining trajectory correction parameters using a minimum incremental wellbore energy method; and ...

example two

[0093]A computer-implemented method for performing automated downhole wellbore trajectory control for correcting between an actual wellbore trajectory path and a planned wellbore trajectory path, the method comprising: receiving real-time path data for determining the actual wellbore trajectory path; receiving parameters for the planned wellbore trajectory path; determining a trend angle and a deviation vector length between the actual wellbore trajectory path and the planned wellbore trajectory path; determining whether the actual wellbore trajectory path deviates from the planned wellbore trajectory path; responsive to a determination that the actual wellbore trajectory path deviates from the planned wellbore trajectory path, determining whether the actual wellbore trajectory path deviates from a correction path; responsive to a determination that the actual wellbore trajectory path deviates from the correction path; determining a target point along the planned wellbore trajectory...

example three

[0094]A computer-implemented method for performing automated downhole wellbore trajectory control for correcting between an actual wellbore trajectory path and a planned wellbore trajectory path, the method comprising: receiving real-time path data for determining the actual wellbore trajectory path; receiving parameters for the planned wellbore trajectory path; determining whether the actual wellbore trajectory path deviates from the planned wellbore trajectory path; responsive to a determination that the actual wellbore trajectory path deviates from the planned wellbore trajectory path, determining whether the actual wellbore trajectory path deviates from a correction path; responsive to a determination that the actual wellbore trajectory path deviates from the correction path; determining a target point along the planned wellbore trajectory path for modifying the correction path; determining trajectory correction parameters using a minimum incremental wellbore energy method; dete...

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PUM

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Abstract

The disclosed embodiments include a method, apparatus, and computer program product configured to performing automated downhole wellbore trajectory control for correcting between an actual wellbore trajectory path and a planned wellbore trajectory path. For example, in one embodiment, a PID controller is configured to obtain real-time data gathered during the drilling operation, determine whether the actual wellbore trajectory path deviates from the planned wellbore trajectory path, and automatically initiate the downhole wellbore trajectory control to change the actual wellbore trajectory path to a modified correction path that is determined using a minimum incremental wellbore energy method.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates generally to methods of directionally drilling wells, particularly wells for the production of hydrocarbon products. More specifically, it relates to methods and systems for performing automated control of a steerable drilling tool to drill wells along a planned trajectory.[0003]2. Discussion of the Related Art[0004]At the beginning of a drilling operation, drillers typically establish a drilling plan that includes a target location and a drilling path to the target location. During the drilling operation, it is not uncommon that the actual wellbore trajectory deviates from the designed well path due to unexpected reasons. Action must be taken to bring the wellbore trajectory back to the desired path. This deviation correction mechanism is extremely important for any drilling operation.BRIEF DESCRIPTION OF THE DRAWINGS[0005]Illustrative embodiments of the present invention are described in detail b...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B44/00G05B11/36E21B41/00E21B47/022E21B7/04
CPCE21B44/005E21B47/022E21B7/04E21B41/0092E21B47/12E21B47/06E21B47/065E21B49/00G05B11/36E21B44/00E21B47/07E21B41/00
Inventor SAMUEL, ROBELLOLIU, ZHENGCHUN
Owner HALLIBURTON ENERGY SERVICES INC
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