DUAL-ACTION BYPASS SUB Circulating Valve | Schlumberger
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DUAL-ACTION BYPASS SUB

Circulating valve

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One-piece, full-strength mandrel
Availability with 11- or 16-in-OD sleeve
Balls retained on seats in tool
Sixteen 0.437-in jet nozzles at 22° phasing

Clean close to the profile for optimal debris removal

The DUAL-ACTION BYPASS SUB circulating valve removes debris from the riser, blowout preventer (BOP), and wellhead to clean surfaces while preparing for cementing and completion operations. The tool is ideal for BOP jetting and specially designed to remove contaminants such as drill cuttings and mudcake that can impede effective cementing and completions.

The valve is run in the open position for jetting and cleaning while traveling through the BOPs, wellhead, and riser. The external jetting nozzles on the sub are then closed by dropping an actuator ball to allow flow through the sub and to circulate the string. By dropping another ball, they are reopened when pulling out, allowing jetting of the riser and BOPs. The balls remain on seat at all times.

Features

  • One-piece, full-strength mandrel
  • Balls retained on seats in tool
  • Availability with 11- or 16-in-OD sleeve
  • Sixteen 0.437-in jet nozzles at 22° phasing

Advantage

  • Jets clean closer to the profile when used to jet the riser, wellhead, or BOP stack
Specialized Tools & Filtration Catalog
M-I SWACO offers a wide variety of specialized tools—from liner top test tools and casing cleaning tools to ancillary and customized tools—and filtration services to protect and preserve fluids quality.
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Applications

The DUAL-ACTION BYPASS SUB circulating valve is designed to run in a cleanup string for jetting the riser, BOPs, and wellhead areas.

Advantages

When using the circulating valve to jet the riser, wellhead, or BOP stack, the large 11- or 16-in- [279- or 406-mm-] OD sleeves allow the jets to clean closer to the profile.

Dual Action Bypass Jetting Tool
TheDUAL-ACTION BYPASS SUB circulating valve is ideal for BOP jetting and specially designed to remove contaminants such as drill cuttings and mudcake, which can negatively affect cementing and completions.
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