System and method of selecting a motor for a wellbore
First Claim
1. A system for determining the ability of a selected motor to function in a wellbore having known wellbore characteristics, wherein the selected motor has a recommended maximum operating temperature, and wherein the system comprises:
- an input device;
a data storage device;
a program resident within the system, wherein the program is configured to;
determine an expected motor load based on motor input data and application input data;
determine a projected motor temperature increase based on the expected motor load;
determine a projected operating temperature by adding the projected motor temperature increase to the wellbore temperature;
determine the ability of the selected motor to function in the wellbore by comparing the projected operating temperature with the maximum recommended operating temperature of the selected motor; and
generate output reflective of the comparison between the projected operating temperature with the maximum recommended operating temperature of the selected motor; and
an output device that displays the output from the program.
2 Assignments
0 Petitions
Accused Products
Abstract
A system for determining the ability of a selected motor to function in a wellbore preferably includes an input device, a data storage device and a program. The program is preferably configured to determine an expected motor load based on motor input data and application input data. Using the expected motor load, the program determines a projected motor temperature increase. The program adds the projected motor temperature increase with the wellbore temperature to determine a projected operating temperature. The projected operating temperature is compared with the maximum recommended operating temperature of the selected motor, or a list of candidate motors, to determine the ability of the selected motor to function in the wellbore.
10 Citations
19 Claims
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1. A system for determining the ability of a selected motor to function in a wellbore having known wellbore characteristics, wherein the selected motor has a recommended maximum operating temperature, and wherein the system comprises:
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an input device; a data storage device; a program resident within the system, wherein the program is configured to; determine an expected motor load based on motor input data and application input data; determine a projected motor temperature increase based on the expected motor load; determine a projected operating temperature by adding the projected motor temperature increase to the wellbore temperature; determine the ability of the selected motor to function in the wellbore by comparing the projected operating temperature with the maximum recommended operating temperature of the selected motor; and generate output reflective of the comparison between the projected operating temperature with the maximum recommended operating temperature of the selected motor; and an output device that displays the output from the program. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of preparing a list of candidate motors capable of functioning in a wellbore with known wellbore characteristics, wherein a motor has a maximum recommended operating temperature, the method comprising the steps of:
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determining an expected motor load by dividing a motor power requirement by a motor power rating; determining a projected motor temperature increase based on the expected motor load and a correlation between changes in the internal temperature of the motor with motor loads; determining a projected operating temperature by adding the projected motor temperature increase to the wellbore temperature; determining the ability of the motor to function in the wellbore by comparing the projected operating temperature with the maximum recommended operating temperature of the motor; and adding the motor to the list of candidate motors if the motor is capable of functioning in the wellbore. - View Dependent Claims (12, 13, 14)
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15. A system for selecting a motor for use with an expected motor load in a wellbore having a known wellbore temperature, wherein the motor has a maximum operating temperature, the system comprising:
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an input device; a data storage device; a program resident within the system, wherein the program is configured to perform the steps of; operating the motor with a plurality of motor loads; measuring changes in the internal temperature of the motor while the motor is operated with each of the plurality of motor loads; correlating changes in the internal temperature of the motor with each of the plurality of motor loads; determining a projected temperature increase at the expected motor load based on the correlation between the internal temperature of the motor and the motor load; determining the projected operating temperature by adding the projected motor temperature increase to the wellbore temperature; comparing the projected operating temperature for the motor with the maximum operating temperature for the motor; and generating output reflective of the comparison of the projected operating temperature with the maximum operating temperature for the motor; and an output device that displays the output from the program. - View Dependent Claims (16, 17, 18, 19)
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Specification