简介：威德福国际发布一款新型同轴钻井扩眼器，名为RipTide。该工具能够在多种钻进情况下进行更加有效的扩眼作业。通过微波烧结和PDC钻头，扩眼器能够将井眼扩大25%。

　One example of how the RipTide drilling reamer can be configured on a drill string.

Weatherford International has launched a new concentric drilling reamer known as RipTide, promising greater efficiency in hole enlargement while drilling (HEWD) for a range of applications.

The RipTide tool provides up to a 25% larger hole beyond the bit diameter while drilling, by using its unique microwave-sintered, polycrystalline diamond cutters (PDCs). Weatherford states that this sintering process offers increased durability, hardness, and impact strength compared to more conventional PDCs?properties that reduce the wear on the cutters, minimize the risk of performance failure, and improve overall cutting efficiency.


One example of how the RipTide drilling reamer can be configured on a drill string.
Potentially costly precision errors are reduced through gauge trimmers on the tool, which control cutting depth during each rotation and minimize the risk of drilling an improperly sized hole, the company reports.

An additional benefit reportedly comes from the RipTide’s configuration. While conventional HEWD tools house all components in a single body, the new tool has a separate controller and reamer body, which allows the tool to be adapted to accommodate changes in the hydraulics program in a faster, more efficient manner. In addition, the cutter block has a balanced, concentric design, which minimizes vibration that could result in failure of bottomhole assembly components, lost tools, or nonproductive time.

Some of the proposed applications for the RipTide tool include:

Underreaming concentric boreholes below casing restrictions to facilitate the running of casing strings and to permit a larger intermediate casing diameter
Expanding existing pilot holes in a wide range of formations
Reducing annular fluid velocities to manage equivalent circulation density and minimize kicking risks
Facilitating openhole, gravel-pack, and oversized liner completions
Optimizing cement jobs
Back reaming
More information on this and other drilling tools can be found at Weatherford’s website.

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