What is Secondary Well Control?


Primary Well Control is the hydrostatic pressure in the wellbore that
prevents reservoir influx while performing drilling.

When primary well control is failed,  then,  this situation needs special
equipment which is called “Blow Out Preventer” or BOP
to control kick.

We can call that
“Blow Out Preventer” or BOP is Secondary Well Control.
Please also remember that BOP must be used with specific procedures to
control kick such as Driller's, Wait and weight, Concurrent, Volumetric,
Lubricate & bleed and Bull heading methods.

Without well control practices for using BOP’s,
it will just be only heavy equipment on the rig.
There are several types of “Blow Out Preventer” (BOP)
which have different applications.

Well control training is the training required to prevent situations where loss
of control of a primary and/or secondary well barrier will result in blow-out or
other catastrophic events. Well control training therefore covers all aspects of
well engineering and operations from well designers, through the drilling
crew, well service crew and service personnel.
WellCAP Well Control, IWCF Well Intervention Pressure Control Certification
Programs at Driller (Fundamental), and Supervisor level for both surface and
subsea BOP stack. PTTCO arrange frequent well control training program and
school in drilling, well servicing, well intervention,  workover, completion, wireline,
snubbing, coiled tubing, at our training centers in Malaysia, Indonesia, Vietnam,
Singapore, Australia, Brunei and Thailand.