Bulldog Multi-Open/Close Frac Sleeve

Bulldog Frac sleeves are activated with the Bulldog Frac BHA, which enables operators to locate, shift open, isolate, and stimulate each stage. Bulldog Frac sleeves are smaller, lighter, and easier to handle than any other sleeve on the market.

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  • Ruler Specifications
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Bulldog™ Frac multi-open/close (MOC) sleeve technology features a mechanical shift and multiple open-and-close sleeves specifically designed for horizontal multistage completions. The Bulldog Frac sleeve is activated using a proprietary, coiled-tubing-deployed Bulldog Frac bottomhole assembly (BHA), which allows operators to locate, shift open, and stimulate each isolated stage. The sleeve, along with the BHA design, allows for flexibility with fracking operations. Treatments can be performed as "open-frac-close" or "open-frac." The MOC feature permits closing sleeves later should well conditions dictate.

The Bulldog Frac sleeve is small, light, and easy to handle, improving makeup efficiencies and safety in the field. No pup joints are required, and the sleeve is a mere 33 in. (840 mm) in length. The Bulldog Frac sleeve has a full bore ID and is designed with large treatment ports, removing choke points and maximizing stimulation and production flow area.

SPE papers:


  • MOC functionality through mechanical shifting tools
  • Full-bore ID body design
  • Fully compatible with cemented and openhole completions
  • Pinpoint fracture initiation in cemented applications
  • Each sleeve provides accurate depth location during shifting operations.
  • Compact, lightweight, and robust


  • Flexibility in frac design; "open-frac-close/open-frac"
  • Patented and field-proven sealing system offers full pressure testing of closed sleeves even after several years in service
  • No ID restriction to choke production
  • Safe, simple, and efficient handling on the rig floor
  • No handling pup joints required
  • No stage count limitations


  • Acid or proppant stimulations
  • Completions requiring reliable single point of entry
  • High stage count stimulation designs
  • Formations with a high frequency of screenouts

Bulldog Multi-Open/Close Frac Sleeve Specifications

Bulldog MOC 450 MOC
OD 5.6 in. (142.24 mm)
Body ID 3.93 in. (99.82 mm)
Length1 33.10 in. (840 mm)
Weight 97 lb (44 kg)
Working pressure 10,000 psi (69 000 kPa)
Tensile strength 325,875 lbf (147 814 kg)
Temperature 350 °F (177 °C)
Flow area 7.03 in.2 (45.35 cm2)
Threads LTC standard

1 Lengths will vary depending on end sub threading and screen size

2 Premium connections available

  • Bulldog Frac Multi-Open/Close (MOC) Sleeve Data Sheet
  • Bulldog Frac Bottomhole Assembly (BHA) Data Sheet
  • Bulldog Frac The Dirty Test Sand Endurance Test Flyer

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