Some features of work of device on preparation of bore hole to fastening

Давыденко, Оксана; Ignatov, A.O

doi:10.15407/mining09.04.500

Cited by 3 publications

(2 citation statements)

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“…В связи с обозначенными обстоятельствами на кафедре техники разведки месторождений полезных ископаемых Национального горного университета был проведен цикл экспериментов, посвященных изучению качественных и количественных гидроме-ханических параметров исполнительного органа устройства поинтервальной очистки в широком диа-пазоне конструктивных и технологических характе-ристик (Davydenko & Ignatov, 2015).…”

Section: основная частьunclassified

Technological characteristics of the device for bore hole cleaning

Ighnatov¹

2016

Min. miner. depos.

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Purpose. Rationale for structural and technological parameters of the device for processing the bore hole vuggy zone departing from the set dependences of active jets formation while streamlining the blade element.Methods. Laboratory and theoretical research allowed to establish the regularities of active jets formation while streamlining the blade element of the special device and their influence on the technological indexes of the process of bore holes plugging.Findings. The necessity to conduct pilot research of the device for the interval cleaning of bore hole is well-proven with the purpose to obtain an adequate physical model of its work. The actual types of liquid flowing through the blade system and its interaction with slime vuggy agglomerates have been identified. The terms ensuring stable mode of streamlining the device working unit are considered. The research resulted in determining certain technologically reasonable geometrical characterictics, which provide acceptable modes of processing vuggy zones. Areas of further research are outlined. Originality.A reliability of work of device for processing bore hole index is an observance in his construction of fully certain geometrical correlations, corresponding to the steady mode of moving away of vuggy agglomerates. Practical implications.The results obtained by theoretical and laboratory research can be applied for developing effective technology of fixing and plugging the bore holes with high technical and economic indexes. Data on the study of the mode of streamlining the blade element form the basis for the development of rational mode parameters of cleaning vuggy zones of a bore hole.

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Section: основная частьunclassified

Technological characteristics of the device for bore hole cleaning

Ighnatov¹

2016

Min. miner. depos.

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“…Any improper operation may result in certain troubles within the well shaft plus unproductive time loss and expenditures connected with its liquidation. In some cases, it may factor into loss of the well or even the deposit on the whole [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Development of the rational bottomhole assemblies of the directed well drilling

et al. 2021

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The problem of development of gas hydrate deposits is complicated by a range of problems connected with the adaptation of traditional methods and procedures to develop the mentioned type of raw materials. Construction methods of the directed well deserve high attention since they are the most efficient solution to provide a stable process of gas fraction production. Experts of the Dnipro University of Technology are at the top among the studies engaged in implementation and operation of gas hydrate deposits. Among other things, the experts have designed rational bottomhole assemblies of the directed drilling for the conditions of gas hydrate deposits. Such devices have a number of functional features. The paper describes following particularities being the most significant ones: a material to produce destructive balls and their physical properties; operating modes of a drilling process; directionality of bottomhole circulation processes as for the operational parameters of flushing fluids; and spatial location of well direction. Both calculations and bench tests favoured the process intended to identify functional features of the devices and proved convincingly the truthfulness of the initial theoretical foundations to drill the directed wells with the help of the modernized hydromechanical boring tool combined with a feeding device. The paper purpose is to analyze and substantiate structural solutions within the certain units of techniques for complex use as well as determine the rational operating schedules of the latter in the context of specific geological conditions where the directed wells are under construction.

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