... drillable soils and describes the mechanism of formation of the ledges in the borehole that change theeffective diameter of the constructed wellbore and lead to an increase in traction forces while dragging the pipeline into the well. Materials and methods Geometric construction of the interaction between drilling tools and drillable soils. Results To avoid the occurrence of ledges in the borehole during the drilling of the wellbore, it is necessary to design the expander design, the location of the centralizers ...

Отсортировано по релевантности | Сортировать по дате