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【多选题】
以下属于旋转导向钻井系统优点的有( )。A.
减少轴向摩擦力，增加大位移延伸能力。
B.
避免井下动力钻具反扭角对工具面角的影响，确保造斜方位稳定。
C.
改善水平段和斜井段携岩状况，使井眼更清洁。
D.
减少粘附卡钻风险。
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A.
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A.
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B.
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C.
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D.
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E.
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F.
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G.
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H.
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I.
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J.
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