Operations Manual
Downlinking Troubleshooting
Downlinking Issue
Corrective Actions
1. Pick up off bottom 2. Shut down pumps for 30 seconds 3. Return pumps to drilling flow 4. Wait a full 90 seconds before re-attempting the downlink sequence 1. Determine that the lower flow rate in the downlink sequence has the potential to breach the lower limit of the RST. 2. If so, reduce the flow by 15 or 20% as opposed to 25%, during the downlink 3. Verify the downlink with WITS Decoder and pay close attention to the safety factor displayed 1. Verify that the lower flow rate does not breach the lower limit of the RST 2. Verify that the pump and differential pressure has settled before the downlink commenced 3. Verify that the coming to bottom before downlinking best practices were followed 4. If any of the above are thought to have occurred, repeat the downlink sequence off-bottom
The downlink was interrupted or a mistake was made
Downlinking in a low flow situation
Downlink was not accepted / the results from the downlink were not as expected
OPS-FIELD-001 | Rev. H
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