System and method for measuring cable tension or pressure for a module integrated cable
AssigneeSchlumberger Technology Corporation
InventorMakito Katayama
Life of this patent
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Abstract
A measurement device, method, and integrated module for a cable array for determining a downhole parameter are provided. The measurement device, method and integrated module may include a first strain gauge mounted perpendicularly along a central axis of a tension member and a second strain gauge mounted a distance away from but parallel to the central axis of the tension member. The first strain gauge and the second strain gauge may be configured to measure strain induced by at least one of tension or downhole pressure. In addition, the measurements from the first and the second strain gauge may be used to determine the cable tension for the integrated module of the cable array.
Claims16
A measurement device for determining tension in a cable array system comprising:
- a first strain gauge mounted orthogonally along a central axis of an integrated sensor module;
- and
- a second strain gauge mounted a distance away from but parallel to the central axis of the integrated sensor module;
- wherein the first strain gauge and the second strain gauge are configured to measure strain induced by at least one of tension or downhole pressure;
- wherein the measurements from the first and the second strain gauge may be used to determine the tension at that point in the cable array system.
A method for determining a parameter along an integrated sensor module in a cable array system, comprising:
- mounting a first strain gauge along and orthogonal to a central axis of the integrated sensor module;
- mounting a second strain gauge apart from but parallel to the central axis of the integrated sensor module;
- reading the strain measurements from the first strain gauge and the second strain gauge;
- and
- computing the parameter from the readings.
An integrated sensor module configured to measure a downhole parameter, comprising:
- a module housing comprising an interior surface and having a central axis;
- a first strain gauge mounted to one end of the interior surface along and orthogonal to the central axis;
- and
- a second strain gauge mounted to a side of the interior surface apart from but parallel to the central axis, where the one end is orthogonal to the side;
- wherein tension and pressure induced compression of an exterior of the housing are measured by the first and second strain gauge;
- wherein the downhole parameter may be determined from the first and second strain gauge measurements.
Dependencies are inferred from the claim text.