US 11,959,380 B2Granted

Method to detect real-time drilling events

AssigneeHalliburton Energy Services, Inc.

InventorsVitor Lopes Pereira, Aidan James Porter, Lawrence Joseph Herskowitz

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Abstract

A method for detecting the occurrence of an event at a well comprising: recording a first set of measurements collected from the well; processing the recorded measurements to provide a first set of data; calculating a first score based on the first set of processed data; recording a second set of measurements collected from the well; processing the second set of recorded measurements to provide a second set of data; calculating a second score based on the second set of processed data; wherein the first set of processed data and the second set of processed data is the number median of absolute difference from normal; combining the first score and the second score using a weighted average; and comparing the combined scores to a predetermined rule based on a specified time frame; and allowing an operator to adjust parameters of the well operation based on the score comparison.

Claims25

Dependent claims

A method for detecting the occurrence of a drilling fluid properties change at a well comprising:

recording a first set of measurements collected from the well with a pressure transducer disposed on a downhole tool;
wherein the measurements are collected from the drilling fluid in the well;
transmitting the recorded measurements to an information handling system for processing;
wherein the information handling system is disposed on a surface of the earth;
wherein the downhole tool comprises a receiver and a transmitter configured to communicate with the information handling system;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
comparing the first score to a predetermined rule based on a specified time frame;
and
altering a flow rate of a treatment fluid mixing with the drilling fluid in the well with a valve by adjusting a flow path through the valve to alter the rate of change in the drilling fluid within the well based on the score comparison by an operator;
wherein the first score is calculated using:
score
=
d
-
median
(
w
⇀
)
mad
(
w
⇀
)
wherein d is the first data set;
wherein median () is a set of data points for the specified time frame in which the first set of data is being compared to;
wherein mad() is a median absolute deviation between a normal difference between a simulated first set of measurements and an actual first set of measurements.

25 more elements

A method for detecting the occurrence of an event at a well comprising:

recording a first set of measurements collected from the well with a flow rate sensor disposed on a downhole tool;
wherein the measurements are collected from a treatment fluid flowing in the well;
transmitting the recorded measurements to an information handling system for processing;
wherein the information handling system is disposed on a surface of the earth;
wherein the downhole tool comprises a receiver and a transmitter configured to communicate with the information handling system;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
comparing the first score to a predetermined rule based on a specified time frame;
and
altering a flow rate of the treatment fluid with a valve by adjusting a flow path through the valve based on the score comparison by an operator;
recording a second set of measurements collected from the well;
processing the second set of recorded measurements to provide a second set of data;
calculating a second score based on the second set of processed data;
wherein the first set of processed data and the second set of processed data is the number median of absolute difference from normal;
combining the first score and the second score using a weighted average;
and
comparing the combined scores to a predetermined rule;
wherein the specified time frame is split into three sections and the first score and the second score are calculated for each section using:
score
=
mean
(
w
N
⇀
)
-
median
(
w
H
⇀
)
mad
(
w
H
⇀
)
wherein () is the first set of data collected or the second set of data collected in a first section;
wherein () is the first set of data collected or the second set of data collected in a third section.

38 more elements

A method for detecting the occurrence of a hole cleaning event at a well comprising:

recording a first set of measurements collected from the well;
wherein the first set of measurements are collected from a sensor disposed on a downhole tool comprising a receiver and a transmitter configured to communicate with an information handling system;
transmitting the recorded measurements to the information handling system for processing;
wherein the information handling system is disposed on a surface of the earth;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
recording a second set of measurements collected from the well;
processing the second set of recorded measurements to provide a second set of data;
calculating a second score based on the second set of processed data;
wherein the first set of processed data and the second set of processed data is the number median of absolute difference from normal;
combining the first score and the second score using a weighted average;
and
comparing the combined scores to a predetermined rule based on a specified time frame;
and
altering a drilling parameter by adjusting the rate of advance of a drill bit a drilling fluid flow rate, or a drill string rotation per minute based on the score comparison by an operator to mitigate a hole cleaning event;
wherein the first score and the second score are calculated using:
score
=
d
-
median
(
w
⇀
)
mad
(
w
⇀
)
wherein d is the first data set or the second data set;
wherein median() is a set of data points for the specified time frame in which the first set of data or the second set of data is being compared to;
wherein mad() is a median absolute deviation between a normal difference between a simulated first set of measurements or a simulated second set of measurements and an actual first set of measurements or an actual second set of measurements.

30 more elements

A method for detecting the occurrence of an event at a well comprising:

recording a first set of measurements collected from the well;
wherein the first set of measurements are collected from a sensor disposed on a drill bit comprising a receiver and a transmitter configured to communicate with an information handling system;
transmitting the recorded measurements to the information handling system for processing;
wherein the information handling system is disposed on a surface of the earth;
processing the recorded measurements to provide a first set of data;
calculating a first score based on the first set of processed data;
recording a second set of measurements collected from the well;
processing the second set of recorded measurements to provide a second set of data;
calculating a second score based on the second set of processed data;
wherein the first set of processed data and the second set of processed data is the number median of absolute difference from normal;
combining the first score and the second score using a weighted average;
and
comparing the combined scores to a predetermined rule based on a specified time frame;
and
altering rates of penetration by adjusting the rate of advance of the drill bit based on the score comparison by an operator;
wherein the first score and the second score are calculated using:
score
=
d
-
d
set
mad
(
w
⇀
)
wherein d is the first set of data collected or the second set of data collected;
wherein dset is a predetermined set limit;
and
wherein mad() is a median absolute deviation between a normal difference between a simulated first set of measurements or a simulated second set of measurements and an actual first set of measurements or an actual second set of measurements.

28 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/738,509Filed 9 Jan 2020 · us provisional application
Priority: 8 Mar 2019
Published: US 2020/0284143 A110 Sep 2020
Granted: 16 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

E21B 47/12
Survey of boreholes or wells: means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the…
E21B 44/00
Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which
E21B
Earth or rock drilling