Modular Whipstock Sidetracking System Drills 23 ft of Rathole for PDVSA in One Run | Schlumberger
Tech Report
Location
Venezuela, South America
Details
Operator
PDVSA

Casing size
133/8 in

Top of window
6,807 ft [2075 m]

Rathole length
23 ft [7 m]

Shear force
80,000 lbf [355,858 N]

Anchor-setting pressure
3,700 psi [25.5 MPa]

WOB
4,000–12,000 lbm [1,814–5443 kg]

Flow rate
400–480 galUS/min [1.5–1.8 m3/min]

Standpipe pressure

1,100–1,200 psi [7.6–8.3 MPa]
Background
PDVSA, the state-run oil company of Venezuela, needed to sidetrack a stuck BHA and mill a quality, full-gauge window that would enable the subsequent drilling assemblies to pass through without obstruction. The TrackMaster Select system with the FasTrack one-trip mill drilled 23 ft [7 m] of rathole in one trip, providing a high-quality full-gauge window, ensuring that subsequent BHA assemblies could pass through the new window without obstruction.
Products Used

Modular Whipstock Sidetracking System Drills 23 ft of Rathole for PDVSA in One Run

TrackMaster Select system mills a quality, full-gauge window to exit steel casing and drill ahead, Venezuela

The TrackMaster Select system with the FasTrack one-trip mill
The TrackMaster Select system with the FasTrack one-trip mill drilled 23 ft [7 m] of rathole in one trip, providing a high-quality full-gauge window, ensuring that subsequent BHA assemblies could pass through the new window without obstruction.
Products Used

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