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Mechanical Work Window, 3-1/16” 10M Flanged Connection

Type of product: Mechanical work window

Connections: 3-1/16" 1M

Working pressure: 1 PSI

Internal Diameter: 3.6"

Window opening: 1"

Supplier reference: 57832

Original manufacturer: Select Energy Systems Inc.


The Threaded Style Work Window is installed above the coiled tubing quad BOP or Coiled Tubing Hanger pack-off element and ensures safe coiled tubing hang-off and other coiled tubing operational procedures. After the coiled tubing is landed at the desired depth, the annulus pressure is controlled with the quad BOP or pack-off element on the Coiled Tubing Hanger. The Window can then be threaded to the open position, exposing the coiled tubing. Once operation has been completed, the window is then threaded to the closed position.


Select Energy Systems Inc (SESI) is a Canadian based service company providing solutions throughout Western Canada, United States and international oil and gas markets since 1988. Specializing in Coiled Tubing applications, SESI provides a variety of Coiled Tubing surface and down hole equipment. 

SESI offers tools and systems for a wide variety of applications including concept design and field installation. SESI’s experienced team has provided live well installations of various Coiled Tubing applications globally and trained end users on site in multiple countries. 

SESI now offers a Virtual Service Technician who can remotely assist you anywhere internet is available.  Through years of research and growth,

SESI now provides some of the most sought after equipment in thermal applications in Western Canada expanding our expertise in the oil production industry.  Select Energy Systems Inc is seen as a valuable and reliable vendor partnership to some of the world’s largest oil and gas producers and continues to be called upon to provide in-house solutions to solve complex issues.

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