Many people ask us every time about well control but many of them understand that well control is when the rigs are burn. This is not the right concept.
Well Control is a situation when hydrostatic pressure in a wellbore is less than formation pressure therefore reservoir fluid will come into a well. If a well control situation is not taking care of properly, it will result in blow like you can see in the VDO below.
The short VDO, only 1 minute and 34 seconds, clearly show that what will be happening if the well cannot be control.
There are many cases when non-shearable string is across the BOP therefore blind shear rams will not be able to shear the string to secure the well if needed. The special procedure must be in place to deal with this situation. This is an example of well control procedure for non-shearable string. If you want to use it for your rig, it must be modified to match with your rig operation.