PBL Autolock

The PBL Multiple Activation Bypass System is a simple,
reliable tool that can assist you in reducing drilling costs
associated with different types of hole conditions. Originally
developed to enable the aggressive pumping of LCM materials
and to increase circulation rates, the PBL has evolved to
benefit many applications in the drilling, completion, and
workover phases of a well such as:

  • Pumping all types of LCM materials, including aggressive pills and
    cement squeezes
  • Increasing circulation rates for improved hole cleaning resulting in
    reduced torque and drag, thereby increasing ROP
  • Increasing annular velocity in highly deviated and horizontal wellbores where removal of cutting beds and hole cleaning are problematic
  • Fluid displacements
  • Sub-sea riser/BOP jetting
  • Acidizing and stimulation treatments
  • Coring applications

In addition, the PBL has several unique features:

  • The PBL tool will close when the pumps are shut down minimizing a U
    tubing effect or possible well control issues that can occur in other tools
  • The Autolock option, which allows for pulling a dry workstring or filling
    the drillstring while tripping in the hole. The Autolock option also
    provides an option to reverse circulate if necessary
  • The PBL can be cycled numerous times in a single trip
  • The ball shearing pressure can be set to the operator's preference
  • The main body and the catcher sub can be placed in different sections
    of the BHA to optimize workstring operations


CONTACT Qsst AS                    Tel: +47 91 69 29 36
postboks 5047       mail:
N-4084 Stavanger