To detect a kick while round tripping as early as possible, it shall be standard practice to use the trip tank at all times while tripping both into and out of the hole.
The Driller shall be responsible for monitoring the trip tank volume at regular intervals to ensure that the hole is either taking or giving the correct fluid volume.
Should an influx be detected during tripping the following procedure shall be as follows:
1. Recognize the kick and alert the crew.
2. Lower the stand andinstall a kelly cock in the open position (hand tight).
3. Close the kelly cock.
4. Close in the well using the ram type preventer.
5. Install kelly (made up to proper torque).
6. Open full bore ball valve (kelly cock).
7. Inform Toolpusher and Company Man.
8. Open hydraulic operated valve in line to choke manifold
9. Monitor drillpipe and annulus pressure and ALLOW pressures to stabilise.
Note: If non return valves (NRVs) are used then the drillpipe pressure should be determined by pumping very slowly to open the valve
The closed-in drillpipe pressure is always a reliable measure of the bottom hole pressure. If both drillpipe pressure and closed-in annular pressure rise simultaneously before starting the actual well control job, gas migration is indicated and bleeding off is necessary until the critical standpipe pressure, and thus the bottom hole pressure, has been restored. Again, when an NRV is installed care has to be taken to determine this pressure rise accurately.
10. Measure the increase in pit level.
11. Prepare for stripping operation.