scholarly journals Method of placer mining by directional well drilling

2018 ◽  
Vol 56 ◽  
pp. 01022
Author(s):  
Viktor Bagazeev ◽  
Niyaz Valiev ◽  
Konstantin Kokarev ◽  
Vasiliy Startsev
Keyword(s):  
Soil Mechanics ◽  
Technological Parameters ◽  
Axial Pressure ◽  
Well Drilling ◽  
Hydraulic Unit ◽  
The Face ◽  
Hydro Jet ◽  
Natural Equilibrium ◽  
Determining Factor ◽  
Main Design Parameter

The study aims at justifying the method for the development of placers by directed drilling of wells. A description is given of the opening of the site, the receding and oncoming scheme of the digging excavation, drilling and expansion of the wells, the main hydraulic unit with remote control. The physics-mechanical substantiation of technological parameters is given: hydro-jet erosion, the shape and size of the cleaning chambers, the adaptation of hydrotransport calculation methods. With jetting, the required flow rate and pressure of water to break rocks is based on the laws of soil mechanics. The parameters of the clearing space and the shape of the chambers are taken in accordance with the magnitude of the vault of natural equilibrium. As a determining factor in the calculation of gravity hydrotransport, the consistency of the pulp is adopted with observance of the condition necessary for the bearing capacity. To adapt the methodology for calculating the hydraulic lifting of pulp to the conditions of well development, the coefficient of dilution is taken as the main design parameter. Modeling of jetting jet in the laboratory conditions was carried out, dependences of decrease in axial pressure were obtained at removal of the face from the nozzle.

scholarly journals The Mathematical Approach to the Identification of Trouble-Free Functioning of Mining Facilities

2020 ◽  
Vol 174 ◽  
pp. 02009
Author(s):  
Fares Abu-Abed
Keyword(s):  
High Tech ◽  
Mathematical Approach ◽  
Technological Parameters ◽  
Well Drilling ◽  
Emergency Situations ◽  
Technological Information ◽  
Drilling Equipment ◽  
Wide Range ◽  
Software And Hardware ◽  
Drilling Rigs

Modern drilling rigs are complexes of high-tech equipment operated in difficult climatic and technological conditions, characterized by sudden spasmodic changes in the process of drilling a well, which contributes to increased wear of drilling components and increases the likelihood of pre-emergency and emergency situations. Drilling equipment has a wide range of characteristics and technological parameters, the values of which are available during drilling due to the use of modern software and hardware systems for processing geological and technological information. In order to single out the most frequent pre-emergency situations in practice and to preliminarily determine the set of signs necessary for their recognition, a corresponding analysis of the complications arising during well drilling has been carried out.

scholarly journals Influence of the cutting parameters on the selected machinability indicators in the milling of steel EZ6NCT25

Mechanik ◽  
2018 ◽  
Vol 91 (8-9) ◽  
pp. 772-774
Author(s):  
Agnieszka Skoczylas ◽  
Kazimierz Zaleski
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Turbine Blades ◽  
Experimental Tests ◽  
Cutting Parameters ◽  
Face Milling ◽  
Steel Grade ◽  
Technological Parameters ◽  
The Face ◽  
D 12

The paper reports results of an investigation of the cutting torque and surface roughness in the face milling of EZ6NCT25 steel. Classified as stainless steel, EZ6NCT25 is effectively used in the aviation and shipbuilding industries. This steel grade is used for producing elements such as turbine blades and combustion chamber assemblies. Experimental tests were performed with the use of full-carbide monolithic tools with the diameter of d = 12 mm. The tests were conducted at variable technological parameters. It has been observed that that cutting torque and amplitude cutting torque depend on machining conditions, and also, although to a lesser extent the surface roughness.

scholarly journals Terapia Ocupacional Social: reflexões e possibilidades de atuação durante a pandemia da Covid-19/Social Occupational Therapy - reflections and possibilities for action the COVID-19 pandemic

2020 ◽  
Vol 4 (3) ◽  
pp. 554-566
Author(s):  
Beatriz Prado Pereira ◽  
Carla Regina Silva Soares ◽  
Débora Galvani ◽  
Marina Jorge Da Silva ◽  
Marta Carvalho De Almeida ◽  
...  
Keyword(s):  
Occupational Therapy ◽  
Social Vulnerability ◽  
Occupational Therapists ◽  
Health Crisis ◽  
Work Strategies ◽  
Social Technologies ◽  
The Everyday ◽  
The Face ◽  
La Red ◽  
Determining Factor

A crise sanitária pela pandemia da CoVid-19 tem demonstrado que a desigualdade social é fator determinante na circulação do vírus e no agravamento das condições de vida. Isso convocou terapeutas ocupacionais a (re)pensar estratégias de trabalho diante da reconfiguração dos cotidianos. A Rede Metuia tem atuado com grupos em situação de vulnerabilidade social e junto a demandas em contextos de interculturalidade, que envolvem a articulação individual/singular, sociocomunitária e política. Tais experiências levam à reflexão acerca da importância das redes de solidariedade na perspectiva da garantia de direitos e redimensionam recursos e tecnologias sociais em diálogo com contextos da ação.AbstractThe health crisis by the CoVid-19 pandemic has shown that social inequality is a determining factor in the virus circulation and the worsening of living conditions. This situation summoned occupational therapists to re-think work strategies in the face of the everyday life reconfigurations. The Metuia Network has worked with groups in social vulnerability and with demands in contexts of interculturality, which involves an individual/singular, socio-community and political articulation. Such experiences lead to reflections on the importance of solidarity networks from the guarantee of rights perspective and to use the resources and social technologies in dialogue with the contexts of action.Keywords: Social Occupational Therapy; Social vulnerability; Pandemic; Resources and technologies. ResumenLa crisis de salud impuesta por la pandemia de CoVid-19  ha demostrado que la desigualdad social es un factor determinante en la circulación del virus y en el empeoramiento de las condiciones de vida. Esta situación ha convocado a los terapeutas ocupacionales para (re)pensar estrategias de trabajo frente a las reconfiguraciones de los cotidianos. La Red Metuia ha trabajado con grupos en vulnerabilidad social así como junto a las demandas en contextos interculturales, que involucran la articulación individual/singular, socio-comunitaria y política. Las experiências han proporcionado reflexiones sobre la importancia de las redes de solidaridad en una perspectiva de garantía de derechos, además de redimensionar recursos y  tecnologías sociales en diálogo con los contextos de acción.Palabras clave: Terapia Ocupacional Social; Vulnerabilidad social; Pandemia; Recursos y tecnologías. 

A potential of non-energy use of agricultural residues and energy plants in lignocellulosic composites production. A brief report

2020 ◽  
Vol 110 ◽  
pp. 73-78
Author(s):  
Anita Wronka ◽  
Grzegorz Kowaluk
Keyword(s):  
Energy Use ◽  
Raw Material ◽  
Salix Viminalis ◽  
Technological Parameters ◽  
Rape Straw ◽  
The Face ◽  
Reduced Density ◽  
Energy Plants ◽  
Research Show ◽  
The Eu

There is a systematic increase in the use of wood waste as raw material in particleboard production, but in the face of an upward trend in particleboard demand, these activities are insufficient. Therefore, there arises the necessity of using materials whose resources are renewable easier (faster) than forest resources, or materials which are considered waste. Such materials could be: “energetic” willow (Salix Viminalis L.) and rape straw. In the case of willow, its production potential quite often cannot be fully utilized in an “energy production” way, due to consumers’ requirements and capabilities. In the case of rape straw, which is regarded as waste material (in more optimistic scenarios – as a side product) in agricultural production, it is known, that the amount of this material will increase, because of the EU regulations, concerning biofuels. Today only 2–3% of rape straw is industrially utilized. The results of research show that appropriate preparation of the mentioned alternative raw material and adjustment of technological parameters give a possibility to produce particleboards of parameters equal to, or even higher than, those of typical, commercially available boards. The research confirmed the possibility of replacing industrial wood shavings with rapeseed straw particles even in 50% without significantly worsening the properties of the manufactured boards. The strength and thermal insulation parameters of boards with reduced density, made of Salix Viminalis L. willow particles, are also promising.

scholarly journals Application of artificial intelligence methods for identifying and predicting complications in the construction of oil and gas wells: problems and solutions

Georesursy ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 87-96
Author(s):  
Alexander D. Chernikov ◽  
Nikolay A. Eremin ◽  
Vladimir E. Stolyarov ◽  
Alexander G. Sboev ◽  
Olga K. Semenova-Chashchina ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Oil And Gas ◽  
Multidimensional Data ◽  
Technological Parameters ◽  
Gas Wells ◽  
Well Drilling ◽  
Artificial Intelligence Methods ◽  
Oil And Gas Wells ◽  
Problems And Solutions ◽  
And Training

This paper poses and solves the problem of using artificial intelligence methods for processing large volumes of geodata from geological and technological measurement stations in order to identify and predict complications during well drilling. Digital modernization of the life cycle of wells using artificial intelligence methods, in particular, helps to improve the efficiency of drilling oil and gas wells. In the course of creating and training artificial neural networks, regularities were modeled with a given accuracy, hidden relationships between geological and geophysical, technical and technological parameters were revealed. The clustering of multidimensional data volumes from various types of sensors used to measure parameters during well drilling has been carried out. Artificial intelligence classification models have been developed to predict the operational results of the well construction. The analysis of these issues is carried out, and the main directions for their solution are determined.

scholarly journals Analyzing mechanics of rock breaking under conditions of hydromechanical drilling

2021 ◽  
Vol 15 (3) ◽  
pp. 122-129
Author(s):  
Andrii Ihnatov
Keyword(s):  
Rock Mass ◽  
Physical Simulation ◽  
Breaking Load ◽  
Rock Breaking ◽  
Next Generation ◽  
Technological Parameters ◽  
Well Drilling ◽  
Dynamic Component ◽  
Stable Mode ◽  
Load Rate

Purpose is to substantiate design factors and technological parameters of next-generation facilities of hydromechanical drilling basing upon the determined features of interaction between breaking pellets and rock mass. Methods. The studies of directionality features and bottomhole processes for rock mass breaking have been carried out using the current analytical methods and laboratory experiments. Among other things, certain mathematical and physical simulation techniques, methods of theoretical processing and interpretation of the research results under SolidWorks, Statgraphics, and Маthсаd environments, and a number of relevant instruments and materials have been applied. Following their technological sequence, the well bottomhole rock-breaking processes were simulated using a special laboratory stand equipped with a control-and-measuring unit (inclusive of a flowmeter, manometer, tachometer, and coordinate spacer among other things). Findings. Application perspectiveness of the combined techniques for rock breaking has been proved. Structural designs of the next-generation facilities for well drilling have been proposed. The pellet-impact drilling features have been analyzed from the viewpoint of its significant dynamic component during the rock mass breaking. Nature of the effect of breaking load rate on the results of bottomhole deformation processes has been identified. Efficiency of the proposed scheme to improve pellet-impact drilling based upon maximum use of a well bottomhole deformed by pellets has been proved. Measures to increase technical and technological indicators of pellet drilling have been considered. Requirements for the conditions stabilizing operation of a collar of the pellet-impact device have been outlined. Further research tendencies have been specified. Originality. It has been determined that compliance with specific geometrical and hydromechanical ratios, corresponding to the stable mode of a well sinking, is the factor required for reliable operation of hydromechanical drilling facilities. Practical implications. The results of stand-based tests as well as analytical studies may become the foundations to develop efficient engineering decision for hydromechanical well drilling with high technical and economic indicators. The data, concerning bottomhole rock breaking processes, are the basic ones to work out rational standard parameters of well sinking processes.

Drilling Problems Forecast Based on Neural Network

2021 ◽  
Author(s):  
Sergey Olegovich Borozdin ◽  
Anatoly Nikolaevich Dmitrievsky ◽  
Nikolai Alexandrovich Eremin ◽  
Alexey Igorevich Arkhipov ◽  
Alexander Georgievich Sboev ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
High Performance ◽  
Oil And Gas ◽  
Forecast Accuracy ◽  
Distributed Data ◽  
Technological Parameters ◽  
Well Drilling ◽  
Artificial Intelligence Methods ◽  
Data Objects ◽  
Mud Loss

Abstract This paper poses and solves the problem of using artificial intelligence methods for processing big volumes of geodata from geological and technological measurement stations in order to identify and predict complications during well drilling. Big volumes of geodata from the stations of geological and technological measurements during drilling varied from units to tens of terabytes. Digital modernization of the life cycle of well construction using machine learning methods contributes to improving the efficiency of drilling oil and gas wells. The clustering of big volumes of geodata from various sources and types of sensors used to measure parameters during drilling has been carried out. In the process of creating, training and applying software components with artificial neural networks, the specified accuracy of calculations was achieved, hidden and non-obvious patterns were revealed in big volumes of geological, geophysical, technical and technological parameters. To predict the operational results of drilling wells, classification models were developed using artificial intelligence methods. The use of a high-performance computing cluster significantly reduced the time spent on assessing the probability of complications and predicting these probabilities for 7-10 minutes ahead. A hierarchical distributed data warehouse has been formed, containing real-time drilling data in WITSML format using the SQL server (Microsoft). The module for preprocessing and uploading geodata to the WITSML repository uses the Energistics Standards DevKit API and Energistic data objects to work with geodata in the WITSML format. Drilling problems forecast accuracy which has been reached with developed system may significantly reduce non-productive time spent on eliminating of stuck pipe, mud loss and oil and gas influx events.

scholarly journals Thermodynamics of non-Newtonian fluids (drilling mud)

2016 ◽  
Vol 17 (2) ◽  
pp. 286-293
Author(s):  
Jа.S. Beletsky ◽  
T.J. Shymko ◽  
I.J. Beletsky ◽  
M.V. Senyushkovych
Keyword(s):  
Similarity Criteria ◽  
Drilling Fluids ◽  
Drilling Mud ◽  
Technological Parameters ◽  
Pressure Balance ◽  
Well Drilling ◽  
Bottom Hole ◽  
Deep Wells ◽  
Balance Energy ◽  
The Impact

Using the method of pressure balance with balance energy forms, calculations are made hidrotermodynamichni mobile hydraulic flow in the well drilling fluids, water-based, which accumulate and transmit energy to other elements. The cases of the flow of liquid upwards (against gravity) and the current flow under gravity down to the bottom hole. The resulting complex equation with specific values ​​that do not depend on the scale of thermodynamics and fluid mechanics processes that occur in the borehole. By combining different similarity criteria can assess the impact of these processes on the performance of any operation in the well during its construction. The dependences can be used dlyautochnennya procedures governing the calculation of regime and technological parameters of the construction of deep wells.

scholarly journals TECHNOLOGY RESTORATION OF THE OPERATIONAL SPO-PROPERTY OF DEFORMED BUILDINGS BY THE MANAGEMENT OF THE SAME-BASE OF THE FOUNDATION BASES

2020 ◽  
Vol 3 (156) ◽  
pp. 116-120
Author(s):  
A. Yukhymenko ◽  
R. Samchenko
Keyword(s):  
Geodetic Survey ◽  
Initial Position ◽  
Base Layer ◽  
Stiffness Coefficient ◽  
Technological Parameters ◽  
Well Drilling ◽  
Drilling Rig ◽  
Negative Effect ◽  
Deformed State ◽  
Technological Impact

The developed method of restoring deformed and emergency buildings by controlling the foundation stiffness is presented. During the design and construction of buildings and structures, final stabilization deformations of the bases are calculated taking into account the loads, soil characteristics and the corresponding distribution of the base stiffness coefficient under the assumption that the base deformation process is almost completed. But in areas composed of structurally unstable soils, during the operation of structures, changes in the rigidity of the bases are possible due to the negative effect on the properties of the soils. To restore the operational suitability of damaged buildings, a method has been developed for eliminating their deformed state, which is based on the management of the stiffness of the bases. The concept of this method lies in the fact that in case of violation of the design distribution of the base stiffness coefficient, it is necessary to ensure recovery stiffness from the mirrored distribution of the destructive shift coe fficient. On the basis of geodetic survey data of a deformed building, a necessary pattern is determined for changing the foundation stiffness and the plot of the desired sediment of the foundation. The recovery sediments of the foundation provide for the desired epure, corresponding to the "new" distribution of stiffness by perforation of the base layer of limited thickness. Perforation under the foundations carry out the drilling of horizontal wells of the calculated parameters. Under the influence of the weight of the structure and additional technological impact, for example, moistening, the cavities of the wells are deformed, turning from round to ellipsoidal, the pillars of the soil and the arches between the wells are destroyed, filling the deformed cavities, the perforated base layer is compressed. Compression of the layer and sediments of the foundations occur in accordance with the calculated parameters of the wells. As a result, the foundations and, accordingly, the structures are returned to the design (initial) position. Keywords: deformation of objects, restoration of deformed buildings, base stiffness, sediment of foundations, roll removal, base perforation, horizontal well, drilling rig, technological parameters.

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