Method of recording a cross-load on a mobile repair unit for a well
First Claim
Patent Images
1. A method of remotely determining an existence of a varying cross-load applied to a derrick of a mobile repair unit for a well, said method comprising the steps of:
- monitoring a first parameter that varies with a first force exerted at a first point, said first force varying as a function of said cross-load;
monitoring a second parameter that varies with a second force exerted at a second point spaced apart from said first point, said second force varying as a function of said cross-load;
storing a first digital value representing said first parameter;
storing a second digital value representing said second parameter;
communicating said first digital value and said second digital value to a remote location by way of a modem; and
comparing, at said remote location, said first digital value with said second digital value to determine a difference therebetween, said difference being an indication that said cross-load exists.
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Abstract
A self-contained mobile repair unit for repairing wells includes the hydraulic and pneumatic tooling required to do a variety of jobs including the installation and removal of an inner pipe string, sucker rods and a pump. The repair unit, hydraulic tooling and pneumatic tooling share a common engine and a common process monitor. Access to data gathered by the monitor is restricted at the job site itself. Instead, the data is transmitted to a remote home base for the purpose of monitoring operations form a central location.
21 Citations
5 Claims
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1. A method of remotely determining an existence of a varying cross-load applied to a derrick of a mobile repair unit for a well, said method comprising the steps of:
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monitoring a first parameter that varies with a first force exerted at a first point, said first force varying as a function of said cross-load;
monitoring a second parameter that varies with a second force exerted at a second point spaced apart from said first point, said second force varying as a function of said cross-load;
storing a first digital value representing said first parameter;
storing a second digital value representing said second parameter;
communicating said first digital value and said second digital value to a remote location by way of a modem; and
comparing, at said remote location, said first digital value with said second digital value to determine a difference therebetween, said difference being an indication that said cross-load exists.
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2. A method of remotely determining an existence of a varying cross-load applied to a derrick of a mobile repair unit for a well, said method comprising:
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monitoring a first parameter that varies with a first force exerted at a first point, said first force varying as a function of said cross-load;
monitoring a second parameter that varies with a second force exerted at a second point spaced apart from said first point, said second force varying as a function of said cross-load;
storing a first digital value representing said first parameter;
storing a second digital value representing said second parameter;
communicating at least one of said first digital value and said second digital value to a remote location; and
comparing said first digital value with said second digital value to determine a difference therebetween, said difference being an indication that said cross-load exists. - View Dependent Claims (3, 4)
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5. A method of remotely determining an existence of a varying cross-load applied to a derrick of a mobile repair unit for a well, said method comprising the steps of:
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monitoring a first parameter that varies with a first force exerted at a first point, said first force varying as a function of said cross-load;
monitoring a second parameter that varies with a second force exerted a second point spaced apart from said first point, said second force varying as a function of said cross-load;
storing a first digital value representing said first parameter;
storing a second digital value representing said second parameter;
communicating said first digital value and said second digital value to a remote location by way of a modem;
comparing, at said remote location, said first digital value with said second digital value to determine a difference therebetween, said difference being an indication that said cross-load exists;
storing a third value representing a time of day indicative of when one of the first parameter and the second parameter are monitored; and
associating said third value with one of said first digital value and said second digital value.
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Specification