新型工具提高单趟下钻作业效率

We develop technologies that others don’t so our customers can do what others can’t. For more than four decades we have led the industry’s re-entry market. We combined our legacy with excellence in engineering to give you an unbeatable single-trip re-entry solution.

The AlphaST™ single-trip openhole cementing and sidetrack system enables you to cement, anchor the whipstock, and mill off formation—without the need to set cement plugs or wait on cement to cure. The system drives down sidetracking costs, eliminates the need for multiple trips in hole, and avoids costly cementing operations for a variety of applications.

The AlphaST Advantage，Cement, anchor, and drill off in one run

We engineered the AlphaST system for efficiency. The system enables you to set the whipstock, convey cement if necessary, and drill off in one run without waiting for cement to cure. By using our IPP® inflatable production packer to anchor the whipstock in the open hole, you can begin drilling off before the cement sets. A lead mill and flex mill initiate the kickoff and facilitate a quick departure from the original wellbore.

FLEXIBILITY

Drill past a fish or around a collapsed borehole, straighten crooked holes, or bypass cement plugs. A slim, reinforced inflatable packer enables you to work past borehole restrictions and reach your kickoff point.

RELIABILITY

A rugged, reinforced packer with a full 360° of contact exerts great holding force across a wide range of hole sizes and conditions. This field-proven packer gives you more control over the kickoff point. The result is unmatched reliability.

EFFICIENCY

Kick off as soon as you set the packer. Two mills on the bottomhole assembly (BHA) facilitate a quick departure from the old wellbore—and the single-angle whipstock concave sets up a smooth transition into the sidetrack.

• Anchor the whipstock with an inflatable packer
• Achieve well integrity with a cement abandonment plug
• Save days of rig time
• Avoid time drilling and the risk of having to re-cement and re-drill
• Remain in absolute control of the kickoff point and direction
• Eliminate waiting for cement by using a packer as a barrier

Applications

• Initiating efficient and reliable lateral departures in openhole wellbores
• Kicking off in hard, highly compressive formations where standard drilling methods are ineffective
• Increasing reservoir exposure through extended-reach drilling

Features and Benefits

• The AlphaST single-trip openhole sidetrack system can set, cement, and drill off in the same run.
• The system’s IPP® injection production packer provides a full 360° of contact against the formation to securely anchor the whipstock system.
• The IPP packer has a high-strength elastomer element and a slim diameter—smaller than the concave or milling bottomhole assembly (BHA)—for drifting through borehole restrictions. An optional hightemperature elastomer can be used to enhance IPP performance in extreme environments.
• A copper flow tube within the whipstock concave facilitates pumping cement below the whipstock.
• Two mills on the drilloff BHA facilitate a quick departure from the original wellbore.
• The whipstock concave uses a single 3° angle for a smoother transition into the sidetrack without steps or ledges, which enables operators to run drilling BHAs that use short-tooth or PDC-style bits immediately after initial whipstock installation.

Tool Description

The Weatherford AlphaST single-trip openhole sidetrack system increases operator flexibility, eliminates multiple trips, and avoids costly cementing operations. This system consists of an IPP injection production packer anchor, a low-angle whipstock, and a twin-mill drilloff BHA. The IPP anchor enables the operator to position the lateral departure in the openhole wellbore without need of a false bottom or cement barrier. The single-angle 3° whipstock creates a smooth transition to eliminate BHA geometry issues on subsequent trips. A lead mill and flex mill initiate the kickoff. This reliable, fieldproven openhole whipstock, anchor, and milling system enables operators to access the pay zone in the shortest possible route.

Real Results

Find out how our system enhances operations

Our AlphaST sidetrack system delivers optimal performance, time savings, and cost reductions for customers around the world—even in the most challenging environments.

Permian Basin, USA

SAVED 5 DAYS OF RIG TIME FOR MAJOR OPERATOR

Wyoming, USA

SAVED 46 HOURS OF RIG TIME BY EXECUTING OPERATION IN 1 TRIP