Efficiency Meets Reliability RipTide® Drilling Reamer Optimizes Large Hole Underreaming for Offshore Operations

Expand from 21 to 24 in. using PDC cutters to avoid casing run issues.
Provide a mechanical ball-drop system that activates at the surface and passes through restrictions smaller than 21 in.
Ensure the tool can be re-run if necessary and being dressed in country under operator supervision.

Weatherford deployed the Riptide single ball-drop reamer, 16500 series, capable of opening to 24 in.
The RipTide reamer is a concentric mass-balance underreamer capable of enlarging the borehole below casing restrictions. The versatile reamer can simultaneously drill and enlarge when used in conjunction with a rotary-steerable system (RSS), motor, or rotary bottomhole assembly.
In its deactivated mode, the tool’s OD is 18-3/8 in., allowing it to pass through casing restrictions of less than 21 in.
The tool was redressed locally in accordance with the operator’s QAQC processes.

The primary tool successfully enlarged the section up to 1,355 ft (413 m) without any hangups, aided by a spring sub in the assembly.
A second underreamer was deployed for the next batching well, and the same tool was re-run for a third well.
Both operations were completed without issues.
This marked the first global run of Weatherford technology opening to 24 in., setting a benchmark for large-hole underreaming.

Details

Location

Matak, Indonesia

Well Type

Offshore, development

Formation

Soft

Hole Size and Angle

21 x 24 in., 24°

Temperature

123°F (50°C)

Depth

670 to 2,025 ft (204 to 617 m)

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Efficiency Meets Reliability RipTide^® Drilling Reamer