LINER HANGER WITH PRE-RELEASE MECHANICAL PACKER (ITsPK)
Intended for running-in on the drilling tool and for attachment and hanging of liners – both when cementing is used along the entire liner section, and when only the liner is cemented and not the productive section itself (collar cementing), with the use of a cementing collar and a cup packer.
Features and benefits
- a repair packer may be installed in case of poor tightness
- modular system
- allows installing any combination of assemblies along any sections
- prevents failure of the entire device upon breakdown of any single equipment component, which increases reliability of the entire complex due to independent actuation of each assembly
- easy transportation to the working site by any transport with reduced risk of damage during transportation due to mobility of each assembly
- the release assembly may be used without the left-hand adapter sub for rotational running-in and attachment of liners
- adjustability of the assemblies pickup values directly at the working site;- no need for drilling-out operations, as all internal components can be removed when disconnected
- provision of safety pins preventing premature actuation of the assemblies in case of abnormal pressure surges, hydraulic shocks, etc
- when required, the anchor design enables liner removal from the well even after its actuation
- provision for installing the anchor based on the unique DualOven® technology enabling two-fold increase of liners’ production string cutting force when using strings with various types of smooth coatings and varying hardness
- the grooving profile of anchor liners prevents the risk of casing pipe movements both in radial and axial directions
- the design prevents abnormal release actuation upon pressure surges, hydraulic shocks, etc. without removing the release plug
- the lock-type operating principle enables release at any borehole inclination angles
- equal drift diameter along the entire device length prevents the risk of bottom-hole assembly “hooking” upon subsequent pulling and running operations
- rigid fixation and sealing of displacement and hanger plugs during their coupling, which is also the case during coupling in a plug seat / valve nipple – this backs up the operation of check valves.
UNCEMENTED LINER HANGER (IPK)
Intended for casing an open hole with a screened liner accompanied by running-in on the drilling tool, hanging on the anchor, and sealing by the packer. An optional modification is available providing for cleanout using a casing shoe with simultaneous running-in of a washpipe (tubing string). Upon release the washpipe is pulled along with the removable part of the release. Includes a universal lock-type release RZU with hydraulic and mechanical (breakout along left-hand thread) release methods, an intercasing packer PM, casing anchor YaK, and a plugs set. A modification for cleanout through the casing shoe is supplied with a sealing assembly.
Features and benefits
- capability of cleanout while running-in the screened liner through the casing shoe;
- compatibility with the docking device for running into 2 or more sections;
- compatibility with hydraulic fracturing equipment (stinger) enabling protection of the production string against high pressure during hydraulic fracturing;
- optional provision of a hydraulic or mechanical packer;
- provision for installing a repair packer in case of poor tightness;
- provision for using the release assembly without the left-hand adapter sub for rotational running-in and attachment of liners;
- adjustability of the assemblies pickup values directly at the working site;
- no need for drilling-out operations, as all internal components can be removed when disconnected;
- provision of safety pins preventing premature actuation of the assemblies in case of abnormal pressure surges, hydraulic shocks, etc.;
- when required, the anchor design enables liner removal from the well even after its actuation;
- provision for installing the anchor based on the unique DualOven® technology enabling two-fold increase of liners’ production string cutting force when using strings with various types of smooth coatings and varying hardness;
- the grooving profile of anchor liners prevents the risk of casing pipe movements both in radial and axial directions;
- the lock-type operating principle enables release at any borehole inclination angles;
- equal drift diameter along the entire device length prevents the possibility of bottom-hole assembly “hooking” upon subsequent pulling and running operations.