Liner hanger assembly, revolving while cementing PHVC

Liner hanger assembly with rotation possibility while run in and also after disconnection
while cementing. Disconnection (brake) is provided in two ways before cementing – hydraulically or mechanically.
Assembly is designed for high torque, heavy axial loads and allows to RIH BHA at any or very
hard conditions.
BHA consists of separate modules: packer, anchor and setting tool.
BHA has several locks from pretriggering:

• Packer assembly is actuated after release and pulling out the setting tool and by partially
  unloading the weight of the drill string;
• Mechanically disconnection (brake) is made by a quarter turn of drill string counterclockwise;
  Allows to perform the following operations:
• Run in the hole with drilling string rotating and rimming;
• Provide intermediate fluid (mud)circulation;
• Activation of the string starts after ball drop and pump it down to the shear saddle;
• Actuation of packer anchor are provided by pressure raise up to 140 atm and weight
  relief on the tailpipes;
• The brake-up of tail from the drill string is provided by pressure raise up to 180atm;
• The check of disconnection is provided by picking up the string and pressure drop;
• Run in back the string and pressure test;
• Restore the circulation by raising the pressure up to 220 atm for shearing the seat with
  the ball;
• Rotation of the liner while cementing;
• Cementing while run in the cement plug for dividing cement solution and squeeze mud;
• Attaching of cement plug to hollow hanger-plug installed in the string assembly;
• Receiving the Bump showing the squeezing cement is complete;
• Circulate to wash excess cement from the head of liner;
• Bring up to action the packer assembly and hanger with partially putting weight and
  unloading the string on thrust sleeve. The string meanwhile can be rotating.