Bulldog Single-Open Frac Sleeve

Bulldog™ Frac single-open (SO) sleeves were developed from our successful North Sea i-Valve technology, which features a mechanical-shift, single-open sleeve specifically designed for horizontal multistage land applications. The Bulldog Frac sleeve is activated using the proprietary Bulldog Frac bottomhole assembly (BHA), which allows operators to locate, shift open, isolate, and stimulate each stage with the help of a multiset packer. Pumping down the coiled tubing annulus permits higher pumping rates and allows for better understanding of fracture geometry and dynamics.

The Bulldog Frac sleeve is compact, light, and easy to handle, which improves makeup times and reduces safety risks. Because it is a mere 24 in. (610 mm) in length, no pup joints are required. The design of the Bulldog Frac sleeve is full bore and includes a large flow area of 10.5 in.², a 45% increase over similar products. This means operators can remove choke points for their production while maximizing stimulation flow rates.

Features

i-Valve locating and shifting profile
i-Frac CEM seal stack design
Pinpoint fracture initiation in cemented applications
Full-bore body design
Each sleeve provides accurate depth location during shifting operations
Compact, lightweight, and robust
Fully compatible with cemented and openhole completions

Benefits

Increased pumping efficiency and rate
No stage count limitations
No ID restriction to choke production
Safer, simpler, and more efficient handling on the rig floor
No handling pup joints required

Applications

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