Temperature compensated sensor gain calibration
AssigneeHalliburton Energy Services, Inc.
InventorJames E. Galford
Life of this patent
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Abstract
Aspects of the subject technology relate to a system configured to apply a voltage setting to a sensor of a downhole tool. The system is configured to identify an active gain control model for a temperature-sensitive sensor for a downhole tool, receiving temperature data for the downhole tool, and apply a high voltage setting for the first sensor based on the temperature data and the active gain control model. The system is further configured to collect sensor data from the sensor operating in a wellbore using the high voltage setting and update the active gain control model based on the sensor data.
Claims20
A system comprising:
- a gamma ray detector for a downhole tool;
- and
- a gain control component configured to adjust voltage for the gamma ray detector, the gain control component comprising at least one computer-readable storage medium having stored therein instructions which, when executed by the gain control component, cause the gain control component to:
- identify an active gain control model for the gamma ray detector;
- receive temperature data for the downhole tool;
- apply a high voltage setting for the gamma ray detector based on the temperature data and the active gain control model;
- collect gamma ray spectral data from the gamma ray detector operating in a wellbore using the high voltage setting;
- and
- update the active gain control model based on the gamma ray spectral data.
A method comprising:
- identifying an active gain control model for a first sensor for a downhole tool, wherein the first sensor is temperature sensitive;
- receiving temperature data for the downhole tool;
- applying a high voltage setting for the first sensor based on the temperature data and the active gain control model;
- collecting sensor data from the first sensor operating in a wellbore using the high voltage setting;
- and
- updating the active gain control model based on the sensor data.
A non-transitory computer-readable storage medium comprising
- instructions stored on the non-transitory computer-readable storage medium, the instructions, when executed by one more processors, cause the one or more processors to:
- identify an active gain control model for a sensor for a downhole tool;
- receive temperature data for the downhole tool;
- adjust a high voltage setting for the sensor based on the temperature data and the active gain control model;
- record, for an accumulation period of time, sensor data from the sensor operating in a wellbore using the high voltage setting;
- and
- update the active gain control model based on the sensor data.
Dependencies are inferred from the claim text.