... for sidetracking using rotary system, the drillstring is subject to differentreversalloadsresultingfrom bending moment in the window zone and torque from the rotary table. The objective of the work was to determine critical bending loads at certain wedge angle and the number of cycles in terms of drill pipes safety. Materials and methods Mathematical Methods Based on theoretical studies of the technique of determining the permissible value of the deflection angle of the wedge, which allows ...

... отклоняющей поверхности и конструкция отклоняющих и прижимающих голову клина к стенке обсадной колонны устройств. The paper offers classification of available designs of wedges, based on five features in common, namely, technology of installation, method of securing in the wellbore, design of the divergent face, protection of the divergent face, and design of diverting tools and tools pressing the wedge head to the casing ...

... конструкцию клинового отклонителя, позволяющего исключить аварийные ситуации при строительстве боковых стволов. In the process of sidetracking and drilling, a wedge experiences different loads: its own weight, the weight of drillstring when running in milling cutters and bits, the liner weight when casing laterals, tangential loads associated with drilling tools rotation. All these loads are working towards ...

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