RFID-Enabled JetStream® Circulation Subs With Full Bore ID Simultaneously Deploy in Tandem Deepwater Operations With Different Patterns

Deploy a multiple-activation circulation sub with a fullbore ID, interchangeable nozzles, the capability of 50% bypass and, at the same time, allows fluid to flow to the bottomhole assembly (BHA).
Ensure the sub has the capability to pump up to 950 gpm on a slimhole 6 5/8-in. section, high-angle well.

Weatherford provided the JetStream circulation subs, in 7-in. and 5 1/4-in., to run in tandem to allow 50% bypass at the 7-in. sub and a 30% bypass at the 5 1/4-in. sub. This allows less than 300 gpm pumped onto the MWD directional BHA. The 7-in. sub was placed across the 9 5/8-in. top of liner.
The JetStream subs were activated independently with radio-frequency identification (RFID) tags and the pressure sequence was performed concurrently on each tool. The 5 1/4-in. tool was activated first and then the 7-in. tool.
The tools were programmed with different names and pressure sequences and each tool was configured to different patterns to avoid simultaneous activation.
After activation, the flow was increased to 950 gpm for 2.75 hours. The tools were then deactivated using both a pressure sequence and RFID tags concurrently and independently for each tool.
No issues on activation or deactivation were observed.

The Weatherford solution enabled the operator to pump up to 950 gpm across the 9 5/8-in. tool on a slimhole section and, at the same time, enabled pumping less than 300 gpm to the slimhole directional BHA.

Details

Location

Offshore, Sabah Malaysia

Well Type

Deepwater, development

Hole Size

6-5/8 in.

Temperature

127°F (53°C)

Depth

13,972 to 13,840 ft (4,258 to 4,218 m)

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RFID-Enabled JetStream® Circulation Subs