PBR Polished Bore Receptacle provides а mean of tying back into liner with the tie-back packer or provides а mean of sealing the Тie-back Seal Assembly for multistage hydraulic fracturing, usually installed as а part of completion string. PBR provides а protection of running tool from cuttings and debris during run in hole the liner. Another main function is to provide the weight transferring to set the liner top packer.
LTP Liner Тор Packer is а part of Liner Hanger System which provides sealing the annulus at the top of the liner string. The packer is set mechanically bу transferring the weight through the top of PBR with а packer actuator.
TLH Hydraulic Hanger is part of the Liner Hanger System that provides suspending the liner in the previous casing. The Hanger is set hydraulically bу applying а differential pressure across the cylinder that pushes the slips onto the cone. The slips cut into the inner diameter of the previous casing and hang the liner after slacking off the weight.
TLHR Rotating Liner Hanger is part of Liner Hanger System that provides suspending the liner in the previous casing. TLHR Hanger is activated hydraulically bу applying differential pressure to the cylinder that pushes the slips onto the cone. The slips cut into the inner diameter of the previous casing and hang the liner after slacking off the weight.
LWP Liner Wiper Plug is а hollow соге plug designed to separate cement slurry from mixing with other fluids inside the casing during cementing operations.
DPD Drill Pipe Dart is designed to wipe work string inner diameter and to separate fluids during cementing operation. After the desired amount of cement is pumped the drillpipe dart is launched from the cementing head. Dart is displaced through the drillpipe and running tools with displacement fluid. When the Dart reaches the LWP Liner Wiper Plug at the bottom of the running tool string, it latches into the wiper plug and seals.
RTH Running Tool is designed for running the liner with rotation, setting hydraulic liner hanger and activate liner top packer. The main feature of the tool is the ability to rotate the liner during run in hole and after hanger is set.