Drilling of additional sidetracks by poly-crystalline diamond cutter (PDC) bits

Bogomolov, R.M.; Serikov, D.Yu.; Grinev, A.M.; Dedov, N. I.

doi:10.30713/1999-6934-2018-2-17-20

ETOGC

2018

DOI: 10.30713/1999-6934-2018-2-17-20

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Drilling of additional sidetracks by poly-crystalline diamond cutter (PDC) bits

R.M. Bogomolov¹,

D.Yu. Serikov²,

A.M. Grinev³

et al.

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Сomparative analysis of efficiency of use a screw drill on frozen soil

Мартюченко

Зенин

2021

Vestn. SibADI

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Introduction. Drilling of frozen and permafrost soils is one of the complex and energy-intensive processes of earthworks. Drilling tools used on frozen soils implement the process of drilling the soil by deformation of cutting or crushing action. Current drilling tools are not efficient enough to use because they implement energy-intensive drilling processes and are not always suitable for various types of soils. A screw drill is considered, which implements the process of soil destruction by shear and shear deformation, which is less energy intensive.Materials and methods. On the basis of theoretical studies of the interaction of 3 types of drilling tools with frozen soil, a comparative analysis was carried out to determine the efficiency of a screw drill use. The technical and economic indicators of the drilling process were compared. A method for determining the efficiency of the use a screw drill based on the analysis of special target functions is presented.Results. The results of a comparative analysis of drilling tools have been obtained. Depending on the nature of soil deformation, the effectiveness of one drilling tool over another is determined. As a result of a comparative analysis of the drilling speed and the energy intensity of the drilling process, the efficiency of the screw drill was established.Discussions and conclusion. In the course of the comparative analysis, the efficiency of the screw drill was determied, which implements shear deformation and soil separation, justifying the feasibility of further research.

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Сomparative analysis of efficiency of use a screw drill on frozen soil

Мартюченко

Зенин

2021

Vestn. SibADI

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Experimental studies of screw drill with frozen soil interaction

Zenin,

Ivanov

2024

Vestn. SibADI

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Introduction. The process of formation of wells in frozen soils is one of the complex processes of excavation. A drilling tool of a new geometric shape forms a well by brittle destruction of the rock. The purpose of the conducted experimental studies was to determine the effect on the energy intensity of the drilling process and on the well diameter coefficient of the angle of rotation of the radius of the screw blade, at which its increment occurs on the destructive part and the angle of inclination of the forming upper surface of the screw blade to the axis of rotation.Materials and methods. The article describes a methodology for conducting laboratory experiments to study the interaction of a drilling tool of a new geometric shape with frozen soils. The ranges of values of the studied factors are determined. The matrix of the complete factorial experiment is constructed.Results. As a result of laboratory experiments, the influence of the geometric parameters of the drilling tool on the energy intensity of the drilling process and on the well diameter coefficient was determined. The dependencies of the torque and the well diameter coefficient on the angle of rotation of the radius of the helical blade, at which its increment occurs on the destructive part, the angle of inclination of the forming upper surface of the helical blade to the axis of rotation and the angle of elevation of the middle helical line of the helical blade are established.Discussions and conclusion. It is established that the drilling tool carries out the formation of a well due to the brittle destruction of the well, which makes it possible to achieve more efficient drilling. And also the dependences of the rational values of the investigated geometric parameters of the drilling tool of a new geometric shape are determined.

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Drilling of additional sidetracks by poly-crystalline diamond cutter (PDC) bits

Cited by 2 publications

References 0 publications

Сomparative analysis of efficiency of use a screw drill on frozen soil

Сomparative analysis of efficiency of use a screw drill on frozen soil

Experimental studies of screw drill with frozen soil interaction

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