903 Well Site Completion and Servicing Safety

being pinched or struck by the drill stem test tools during floor operations
swabbing the hole on the way out with the test tool could cause a kick to occur (could result in a blowout leading to injuries and deaths
being exposed to unexpected release of H₂S or other gases or liquids
a packer seat failure or fluid loss to an upper formation could cause a kick that might result in a blowout causing injuries and deaths
other hazards are similar to those encountered during tripping out/in

Prior to a drill stem test, ensure the following precautions are taken:

Wear appropriate PPE.
Instruct workers in handling and using the special tools, PPE, respiratory protection, and safety procedures required during drill stem testing.
Ensure all workers on the location understand the dangers before starting any drill stem test.
Keep a method for filling the hole in place at all times. Before any test starts, the rig management must ensure that the blow-out prevention system includes a kill system that is capable of pumping fluid into the well below the annular preventer and at least on-set of pipe rams.
Run a pump-out-sub or downhole circulating device in the test string to enable the system to be reversed.

If the drill stem test is to be performed in an H₂S area, ensure the following precautions are taken:

Post a warning sign in full view of the public indicating the test is being conducted and forbidding entry.
Post a reliable and competent person to stop unauthorized persons (the public) from coming to the location.
Identify a minimum of two muster points with all vehicles parked in an appointed area at a safe distance from the location.

1-3. What additional precaution is necessary if a drill stem test is to be performed in a H₂S area?

Keep a method in place to fill the drill hole

Post a sign in the H₂S are to warn the public

Require visitors to assemble at a muster point

Use forced air ventilation on location

You forgot to answer the question!