Innovative casing and completion technology provider Deep Casing Tools has launched its revolutionary 5 inch completion reaming tool with a world-first successful application.

The Aberdeen-based company’s new 5 inch Turborunner™ independently-powered high-speed tool was deployed for CNR International in a horizontal application offshore central North Sea.

The TurborunnerÔ is a unique completion-compatible reaming tool that aids first time placement of the completion or liners at target depth. Suitable for all rigs and easy to deploy, it reduces risk at depth, time and costs. A 7 inch version of the tool was launched successfully last year.

The 5 inch Turborunner™ is specifically designed to support smaller open hole completion placement, combines optimised washing with a rotational reaming capability and avoids rotation of the completion string itself. The very low operating pressure is ideally suited for integration with completion systems.

In the North Sea project, placement of the liner was seen to be a significant risk due to the stability of the sand shale sequences in the long open hole section. The CNR International drilling team selected the Turborunner™ to provide an operational advantage in the event of difficulties in running the liner. The tool was run on a 5,500 foot long 4 ½” liner into a 6” open hole. Upon reaching planned depth, the tool and the liner were successfully cemented in place.

Senior drilling engineer for CNR International Stephen Cameron said: “The Turborunner is a cost- effective solution which greatly enhances the successful running of the liner string in potentially unstable formations, without compromising the well”.

Lance Davis, CEO of Deep Casing Tools, said: “This application typifies the challenges faced by the industry brown field opportunities. On one side, the challenge stems from balancing mud weights, particularly in long horizontals, to support the borehole. On the other, the challenge is to deliver what can be an expensive completion to target depth without rotation, premature setting or damage.

“Our unique Turborunner suite of tools is really challenging the ways drilling and completion engineers seek to achieve target depth in the most demanding conditions. No other system can provide the same levels of access and risk reduction at target depth.”

With continued success, uptake of the Deep Casing Tools technology is increasing. The experience gained from the Turborunner™ applications has also had a direct impact on the company’s Turbocaser™ high-speed drillable reaming system to be released early 2011. This new product is specifically designed to aid the placement of casing and intermediate strings with the key feature of a fullbore motor.

Tags: Deep Casing Tools