Slip-on Welded Semi-Rigid Bow Centralizers

Model : S 31

SLIP-ON WELDED SEMI-RIGID BOW CENTRALIZER

Slip-on Welded Semi-rigid Bow Spring Centralizer

Eneroil’s slip-on welded semi-rigid bow spring centralizers ensure high efficiency in casing jobs on deviated and horizontal wells. Combining the features of a standard bow spring centralizer with those of a rigid centralizer, these centralizers provide a very high restoring force in combination with a very low starting force for centralising the casing pipe in vertical, deviated, and horizontal wells. The spring characteristics of the double-crested profile permit compression and facilitate movement through tight spots and dog-legs.
A non-welded design features the self-locking of lips for holding bows to end collars. Bows of special alloy steel are hot-formed and then tempered for optimum strength, resilience, and uniformity. The bows can also be configured for any hole diameter with a choice of various standard bow heights for optimum starting and restoring forces.

Performance Features

  • Eneroil’s semi-rigid centralizers attain higher stand-off, when compared to other bow spring centralizers, because of their higher restoring forces.
  • Able to centralise the casing pipe in vertical, deviated, and horizontal wells.
  • End collars are of widened-design for greater frame strength and to prevent the bows from hitting the casing.
  • The compatibility of the bows with various end collar sizes reduces inventory requirements and provides tremendous flexibility of casing and hole size combinations.
  • Bows can be configured for any hole diameter with a choice of six standard bow heights for optimum starting and restoring forces.
  • Bow springs are of high quality alloy steel, bent to shape and heat treated under controlled temperature / time cycles for consistent spring characteristics.
  • Hinge locking pins are made of high-strength steel for maximum structural strength.
  • These centralizers are designed to be installed between stop collars or casing collars. Eneroil does not recommend installing semi-rigid centralizers over a stop collar.
  • Its high performance characteristics are combined with an easy field installation on pipe rack.

Options

  • Slip-on welded semi-rigid spring bow centralizers are available in sizes 2 ⅞" to 30”
  • Special sizes or combination can be made available on request

Recommended For Use With

  • Hinged Stop Collar – S-60
  • Hinged Stop Collar with Spiral Nails – S-61 / S-62
  • Stop Collar with Set Screws – S-63
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