The main parts of the line hanger are made of high-strength alloy steel, which ensures high mechanical performance and strong ability to hang heavy liner.
The liner hanger is hydraulic-set and applicable to various well conditions.
All of the pump-down plug, liner wiper plug and the landing collar have locking systems and are easily drillable.
The pack-off bushing can be pulled out with the setting tool and therefore saves time for drilling out.
The seal assembly contains a set of "W" packing rings that have perfect two-direction sealing capacity.
The gage rings on the liner hanger not only serve as rigid centralizers, but also protect the hydraulic cylinder and slips while running in.
To release the setting tool from the liner, simply apply 5 to 10 t load to the drill string and rotate right hand.
The hydraulic Liner hanger mainly realizes tail pipe suspension through hydraulic transmission. It is widely used in oil and gas wells, technical tail pipe of salt brine wells and geothermal wells and production tail pipe cementing. In the following cases, the tail pipe hanger is used for cementing:
It is possible to save a lot of casing and cost for deep wells and evaluation wells.
Completion of the casing head and surface casing load
Improve long-term cement cementing operations to prevent low-pressure leakage
Quickly and easily seal the open hole section and the old well deepening cementing
Provide flexible completion methods and safer cementing operations
In the Rock salt well section, the tail pipe is used to enhance the sealing strength of the rock salt section
Seal the damaged section of the upper casing (corrosion, fracture)
Size (Csg x Liner)
16 x 11-3/4
13-3/8 x 10-3/4
11-3/4 x 8-5/8
10-3/4 x 7-5/8
10-3/4 x 7
9-5/8 x 7
7-5/8 x 5-1/2
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