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Transcript
TORSIONALLY SET,METAL-FORMED LINER HANGER
PowerScrew™ Liner Systems
Seminole Services is rooted in solid mechanics and
material science. Utilizing advanced metallurgy and
mechanical engineering design principles, our company
is committed to developing tools that combine ease of
operation, safety, and functionality.
2002 Timberloch Place, Suite 200The Woodlands, TX 77380
The process of deploying and setting the PowerScrew Liner System is simple and straightforward. Using torsional energy
from the top drive in the setting process, the PowerScrew does not require high pressure for setting that is needed by many
conventional hanger systems.
• Use of a Spade Nose Casing Shoe and Rotating Cement Head are preferred.
• The Float Shoe must be made up below the Latch-Lock Landing Collar.
• Make up the last liner connection to the bottom of the Powerscrew™.
• Make up the top Powerscrew connection (drill pipe) and run in the hole on drill pipe to setting depth. The liner is locked to the drill pipe through the Powerscrew and can be put in tension, compression, and torqued at will, being respectful of the equipment’s mechanical limits.
• Tag bottom with the Casing Shoe, pick-up to setting depth.
• With the Cement Manifold in place, pump cement from the rig floor.
• After the cement is pumped, switch over to the displacement fluid and pump the drill pipe dart between the two fluids.
• The dart will launch the Latch-Lock cement plug positioned below the setting tool. The liner can be set to release just prior to plug launch. (No ball drop required)
• Continue pumping displacement fluid and bump the plug into the Landing Collar.
• If utilized, pump or drop the steel setting ball and allow time to seat.
• Prepare for the metal forming process by putting the work string into compression. If a ball was pumped or dropped, the release mechanism must be pressurized to initiate liner release. (Ball drop complies with BSEE Regs)
• Apply torque to the work string.
• With the liner released, torsional energy from the work string is transmitted to the liner top through a unique Multi-Lead Rifled Mandrel. This helically stretched liner top embeds hardened slip wickers with profiled packer elements directly into the intermediate casing.
• With a sudden drop in torque, the liner top is fully integrated into the intermediate casing. Pick-up to ensure loss of liner weight
• With a ball drop, the setting tool’s burst disks must be pressurized to allow circulation.
• With circulation reestablished, pressure test the liner system.
• The Powerscrew setting tool can now be pulled out of the hole.