簡介：挪威石油和貝克休斯聯(lián)合研發(fā)出世界上首個(gè)隨鉆導(dǎo)向襯管系統(tǒng)。該項(xiàng)技術(shù)此前曾在新老油田上都應(yīng)用過，也在挪威北海油田的布拉吉海洋平臺(tái)上獲得試用成功。貝克休斯稱：新技術(shù)的理念是將尾管（襯管）直接連接附加在鉆具上，司鉆人員可以使用導(dǎo)向系統(tǒng)精確鉆進(jìn)，并記錄下油井三位剖面圖。而傳統(tǒng)鉆井工藝中，在下套管前，或在下入尾管前，必須起出鉆具。

Statoil and Baker Hughes have joined forces to develop the world's first rotary steerable liner-while-drilling system. The technology, which reportedly has applications in fields both new and mature, was successfully tested from Statoil's Brage platform in the Norwegian sector of the North Sea.

The concept of the new system—a rotary steerable system that gives operators the ability to accurately drill and log 3D well profiles with a liner attached directly to the drillstring—is entirely new, according to Baker Hughes.

In conventional drilling operations, it is necessary to pull the drillstring before the casing or liner can be run into the borehole. Liner drilling systems eliminate the need to pull the drillstring to run casing, saving time and drilling costs by minimizing the risk of borehole collapse and reducing nonproductive time. The addition of rotary steerable capabilities helps overcome the challenges of drilling in zones with lower pressure and unstable shale/coal layers and in formations with varying flow and pressure regimes. The system is designed to withstand high circulation rates and high torque loads while providing liner connect and disconnect capabilities.

Statoil and Baker Hughes qualified and verified this drilling technology through a rigorous development process and conducted extensive onshore testing before deploying it on the Brage platform. A research group in Statoil's technology and new energy division (TNE) worked in cooperation with Baker Hughes during this development and qualification process.

"This project highlights the advantages of bringing together experts from several different disciplines to work collaboratively on a project that encompasses both the drilling and completion well construction processes," said Gary Rich, president, Europe region, for Baker Hughes.

Following a second deployment in January at Statoil's Statfjord Field, the new technology will be commercialized.

To learn more, visit www.bakerhughes.com/steerable_liner.

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