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在挪威北海地区下入直径为 12 ｉｎ ,带有现有保径切削齿布置的 8刀翼ＲＳ130导向旋转钻头。这种钻头配合ＰｏｗｅｒＤｒｉｖｅ旋转导向系统从井斜角为 5 6°增斜到 84°后又降斜到 71° ,最大狗腿度为 5 1°/ 10 0ｆｔ。这种钻头具有优良的导向能力 ,以平均钻速 76ｆｔ/ｈ
In the North Sea region of Norway, an 8-blade RS130 pilot rotary drill with a diameter of 12 in with the existing gauge cutters is placed. This drill with the PowerDrive rotary steering system slides down to 71 ° from a gradient of 56 ° to 84 ° and a maximum dogleg of 5 1 ° / 100ft. This bit has excellent guiding ability with an average drilling rate of 76 ft / h