The new Turborunner 5 in. completion reaming tool aids first time placement of the completion or liners at target depth.
The company says the tool is suited for all rigs and easy to deploy. It helps reduce risk at depth, time, and costs, the firm points out. A 7 in. version of the tool was introduced last year.
The 5 in. tool is specifically designed to support smaller openhole completion placement, combines optimized washing with a rotational reaming capability, and avoids rotation of the completion string itself. The low operating pressure is suited for integration with completion systems.
Product launch. During the central North Sea project for CNR International UK Ltd., Aberdeen, that successfully launched the 5 in. tool, placement of the liner was seen to be a significant risk due to the stability of the sand shale sequences in the long openhole 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 ft long 4½ in. liner into a 6 in. open hole. Upon reaching planned depth, the tool and the liner were successfully cemented in place.
The maker notes that this application typifies the challenges faced by industry's 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.
Source: Deep Casing Tools, Unit 2, 51 York St., AB11 5DP, Aberdeen, UK.