... increase of the friction force, more effort and stress-strain state of the column. For deep, ultra-deep drilling and horizontal drilling pipes of aluminum alloys have an advantage over steel - the weightof the column is several times smaller. Use of aluminum drill pipe also avoids the maximum flow resistance in the circulation system of the well in order to transmit impulses to downhole telemetry and to best removal of cuttings to the surface. Materials and methods Analysis, research. Results Use ...

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