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A mechanical base for the cement

 The Cement Support Tool (CST).

Is it possible to achieve success every time?

In the oil and gas industry, setting cement plugs is a critical operation with significant consequences for well integrity and performance.

However, without a firm support, the average failure rate for setting these plugs is alarmingly high, around 50%. This not only leads to increased operational costs but also risks compromising the entire well structure.

Since its introduction in 2002, the Cement Support Tool (CST) has transformed cement plug operations, providing a reliable solution that ensures the cement plug is set with confidence. By expanding to create a robust support base, the CST reduces the failure rate dramatically. With thousands of units deployed globally, the CST boasts a success rate of over 95%, making it a trusted choice for industry professionals.

Investing in the CST means choosing a proven, efficient, and cost-effective solution that enhances the reliability of your cementing operations. With its easy deployment, lack of need for additional tools or training, and versatility in various operational scenarios, the CST delivers unparalleled value, ensuring your cement plugs are set right the first time, every time.

Access Guide: How to select the right technology for setting balanced cement  plugs?

How & Why does it work?

The CST is made of aluminum, fibre glass and strong fabrics, and prevent heavy cement slurry to swap place with well fluid below the cement plug. The CST is folded together like an unbrella when pumped through the drillpipe and tubing before it folds up when exiting the pipe. The CST can fill a hole sized 6" up to 42" depending on the CST model. 

Browse the different CST model

The CST does not anchor to the wall or casing as it works as a floating piston in the fluid. There is no limitation to angle or depth. The CST has been used in hole depth >7,000 m (>23,000ft) and well angle up to 90deg from vertical. When using the CST the well must be static below the setting depth of the CST.

Access SPE-Paper: Curing hydrodynamic instability during balanced plug  cementing

Customer Benefits

By choosing the CST, you invest in a proven solution that enhances the reliability, efficiency, and overall success of your cementing operations.

High Success Rate:

CST dramatically reduces the failure rate for setting cement plugs, boasting a success rate of over 95%.

Efficient and Reliable:

Designed for easy pumping through long work strings, CST ensures reliable support for off-bottom cement plugs, simplifying the cementing process.

Flexibility:

Available in five standard sizes and a customized version for coiled tubing, CST covers a wide range of needs in various operational scenarios.

No Extra Tools or Training Needed:

CST is easy to deploy without the need for additional tools or extensive training, making it cost-effective and user-friendly.

Versatility:

CST functions as a floating piston in the fluid, with no limitations on angle or depth, and has been used in hole depths greater than 7,000 meters and angles up to 90 degrees.

Quality Materials:

Made of aluminum, fiberglass, and strong fabrics, CST prevents heavy cement slurry from swapping places with well fluid below the cement plug.

Globally Proven:

With thousands of units deployed globally since 2002, CST is a trusted solution recognized by industry professionals worldwide.

Effective Plugging:

CST expands to create a robust support base, providing effective and reliable plugging in both open and cased holes.

Browse our Cement Support Tool models

The CST is available in five standard sizes, with an additional customized version specifically for coiled tubing. This variety ensures that you can select the perfect size for your specific cementing needs, maximizing the effectiveness and reliability of your operations.

Choosing the right CST size is straightforward and depends on two key factors:

  • The inner diameter of your work string

  • The inner diameter of the open or cased hole where the cement plug will be set

2"

Cement Support Tool

BROWN MODEL

Work String Range 2 - 4½" ID
Hole / Casing Size 6 –  16" ID

2”

Cement Support Tool

BLUE MODEL

Work String Range 2 - 5” ID
Hole / Casing Size 7 - 16” ID

2 ½"

Cement Support Tool

GREEN MODEL

Work String Range 2 ½ - 5.16" ID
Hole / Casing Range 7 ½" – 20" ID

2 ½"

Cement Support Tool

ORANGE MODEL

Work String Range 2 ½"-6"
Hole / Casing Range 7 ½" – 20" ID

4"

Cement Support Tool

BLACK MODEL

Work String Range 4" - 6.5" ID
Hole / Casing Range 8" - 42" ID

2 ⅜"

Cement Support Tool

YELLOW MODEL

Coil Tubing CST 2 ⅜"
Hole / Casing Range 4" - 16" ID

(3-minute video)

See how the CST works

Download product sheets for all cement support tool models

he selection of six models of the Cement Support Tool (CST), including a customized version for coiled tubing allows you to choose the perfect size for your specific well conditions, maximizing the tool's effectiveness and reliability.

FAQ for the Cement Support Tool

Curious about the questions we hear most often?

4 700+ Number of CSTs delivered world wide
45+ Number of countries delivered to
97.2% Current success rate for the Cement Support Tool

Success Stories with Cement Support Tools (CST)

Discover how our Cement Support Tools (CST) have transformed drilling operations for major operators around the globe. From setting environmental cement plugs to managing severe downhole losses, these case studies showcase the versatility and reliability of CST in various challenging scenarios.
Setting an environmental cement plug from vessel

Well Cementation and Wellhead Removal Campaign (Rig Chase), with the use of CST.

Hesitation cement squeeze job using CST as base

Complete losses occurred when a major operator in the North Sea was drilling a 16” section below a 17” liner.

Cement squeeze job using CST as base

There had been severe losses when a major operator in the Gulf of Mexico was drilling a 20” section below a 16” casing.

Setting multiple balanced plugs in one run using CST as base

A major operator in the North Sea successfully plugged and abandoned a well with 6 separate cement plugs.

Use of CST as base in a high angle well

A major operator deployed a Cement Support Tool (CST) in a 82° well @ 4205m to use it as a base for a kick-off plug.

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