Activation of well tools
AssigneeSchlumberger Technology Corporation
InventorsJames E. Brooks, Nolan C. Lerche, Gerald W. Robertson, Michael L. Timmons
Life of this patent
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Abstract
A safety system for use with an apparatus lowered into a well includes a power supply and a controller that monitors at least a predefined condition of the apparatus. A switch blocks power from the apparatus until the predefined condition is present. A test system includes a test device that generates a signal having a predetermined characteristic (a certain frequency, for example). A controller detects the signal and enables performance of a test operation when the signal of the predetermined frequency is present.
Claims23
A test system, comprising:
- a test device that generates a signal having a predetermined characteristic;
- and
- a controller to detect the signal and enable performance of a test operation when the signal of the predetermined characteristic is present and disable performance of the test operation when the signal of the predetermined characteristic is not present.
A safety system for use with an apparatus lowered into a well, comprising:
- a power supply;
- a controller that monitors at least one predefined condition relating to positioning of the apparatus in the well;
- and
- a switch that blocks power from the apparatus until the at least one predefined condition is present.
A method of safely operating an apparatus used in a well, comprising:
- monitoring at least one parameter related to positioning of the apparatus in the well;
- blocking activation power from the apparatus while the parameter is in a first condition;
- and
- applying activation power to the apparatus when the parameter is in a second condition.
Dependencies are inferred from the claim text.