In view of the problems that the deep directional wireline logging in offshore oilfield encountered many obstacles and stuck,and it was difficult to obtain data,a scheme design was put forward to complete the deviation building and lowering in the well section of non-target formation and seal it with casing,and then open the target formation with vertical well section to form an"S"shaped well hole,and ensure the stability of the well wall by optimizing the drilling fluid properties.The optimized flywheel,which replaces the centralizer of the traditional logging tool,finally realizes the purpose of geology data acquisition and greatly reduces the risk of wireline logging.At present,it has been popularized and applied in the eastern South China Sea.
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