SMART-2™ DOWNHOLE BATTERY LOGGER EXAMPLE

SMART-2 equipped batteries provide the following summary information:

Details of the battery pack, part number serial number, manufacture date, capacity and voltage.
Expected remaining capacity
Current voltage of pack
Maximum current draw.
Minimum and maximum temperatures that pack was exposed to.
Active time (in hours) over a user defined current threshold. User can define two separate timer, one for a lower threshold and a second higher threshold.

Before the battery packs go out to the field the user can define specific jobs using the SMART-2 logger. This allows the user to easily log the usage history of a specific battery pack. All the job information is stored in the battery pack for easy retrieval.

Job information stored includes:

Job Name
Memo for the Job
When Job was started
Total active hours for the Job
Amount of battery energy used on the Job
Maximum current on the Job
Minimum and maximum temperatures on the specific Job

In addition to keeping a summary of battery usage, SMART-2 battery packs also record detailed data log in a time series. This provides you with an easy to interpret log that spans the operating life of the battery pack. Data can be viewed a different zoom levels, providing the user an overall understanding of batteries usage as well as allowing to zoom into specific events of interest.

Data channels showed on the data log are:

Pack voltage
Temperature
Current draw

Data from log provides extremely useful for troubleshooting different incidences.

This example shows the MWD tool successfully switching in the second battery pack when the voltage threshold is reached. The current draw is reduced and the voltage of the pack rises when the switch occurs (arrow).

This example shows confirmation that the battery pack is being depassivated before use.

This example shows three episodes where the current draw from the battery pack has gone much higher then normal (2500mA). See below for a zoomed in image of the first current spike event.

This is the first current spike event from the previous screenshot. It can be seen that the high current period lasts for 3 minutes.

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