扶正器“女皇” Centek用超高强度呈现完美居中

Simply Smarter

The non-welded, one-piece construction means the S2 has no weak points making it ultra-high-strength. It is designed specifically to replace a solid body type centralizer for casing running applications and severe well geometries when run in horizontal, long ERD, J-type, S-type and other well designs.

The S2 is manufactured to gauge and has exceptional restoring force and outstanding flexibility down hole. The S2 bow spring centralizer offers:

• Optimum standoff capability in even the most challenging well conditions;
• Zero start and running forces;
• A low friction coefficient, which means minimal torque losses and reduced drag;
• Enhanced rotation and reciprocation during cementing due to optimized centralization.

Award winning innovation

Over the years the S2 has received a number of awards including the prestigious Queens Award for innovation.

S2 Award Winning Innovation

• Designed for well applications and geometries for vertical, horizontal ERD, close tolerance, or under reamed well conditions;
• API Rated;
• Non-welded smooth bow profle overall;
• Integral bow design for increased strength and performance;
• Zero weak points;
• Zero start and running force with exceptional restoring force;
• Low friction coeffcient;
• Minimum rotational torque losses;
• Minimize stall out effect;
• Enhanced rotation due to optimized centralization;
• Shale Production.

The Centek S2 has been an integral part of the success of US Shale play production. Working within some of the world’s toughest regulatory guidelines, the S2 provides excellent centralization, and fluid circulation required to give a robust cement sheath, which in turn ensures the integrity, production and overall life of the well.

Applications

• Unconsolidated wells;
• Extended reach, horizontal and highly deviated wells;
• High temperature/High pressure and Geothermal wells;
• Shale oil & gas wells;
• Vertical and simple wells;
• OH Completions, Frac and Swellables;
• Sandscreen completions.

CENTEK UROS CENTRAlIZERS CAN BE ROTATED FOR MORE THAN 12 HOURS IN THE CASED AND OPEN HOlE AND COME OUT UNDAMAGED AND WITH NO BREAKAGES

Region: Europe Country: Norway Location: Starfsh 3-ST2 Field: Starfsh

THE CHAllENGE

The operator needed to run 7”- 32.0#/ft liner into 8 1/2” OH passing through the 8.535” restriction of the 9 5/8” – 53.5#/ft casing with a TD of 3,600m.The liner was partially rotated in the open hole on the way in, and it was rotated for approximately 12 hours at 20rpm in the cased hole on the way out.The centralizers were also run through a whipstock window.
The liner was pulled due to hole conditions 40m short of TD.

THE SOlUTION

55 x 7” x 9 ½” Centek UROS centralizers Rotating with low quality, weak, hinged bow spring centralizers could destroy them and create serious problems. This is not the case with Centek centralizers.

THE RESUlT

OWS and the cementers inspected all the centralizers/collars and the only damage that could be seen was bending of some of the set screw sockets. The Centek UROS single piece construction gives it robustness and strength which exceeds that of competitor products. Although Centek does not recommend the re-use of centralizers when pulled out of hole this case study proves that even when subjected to extreme stresses the unique design of Centek centralizers meant that they remained in good condition and could be re-run.

“[We] will run the same centralizers again”Halliburton, Norway