Papers by Keyword: Formation

Abstract: A lithofacies model of the Fainsk oil field YUS₁¹ formation was built. The results of interventions for oil production stimulation and enhanced oil recovery depending on the section penetrated by wells were considered. Criteria for selection of various types of interventions in particular geophysical conditions were given, and recommendations on the selection of technologies for bottomhole zone processing (BZP) and enhanced oil recovery (EOR) were made. The research objective is to evaluate the effectiveness of interventions in terms of enhanced oil recovery, adapted to the specific features of the field geologic structure aspects. Through the use of sedimentary deposits facies analysis method, a lithofacies model of the Fainsk oil field YUS₁¹ formation was constructed. The application of field-geologic analysis gave an option to evaluate the technological effectiveness of interventions for oil production stimulation and enhanced oil recovery depending on the reservoir units genesis penetrated by wells.

Abstract: The Ozernoye field is a unique geological object. The primary geological and geophysical materials obtained during its inspection allow coming close to developing universal methods for carbon-containing field logging, which can be extended to other geological objects. The research objective is to forecast the development of reservoir units in undeveloped parts, determine the expected parameters of their class, the maximum total net reservoirs and the number of sandy formations, carry out their indexation and detailed paleogeographic reconstructions of the inspected area. Using the paleogeographic methods, retrospective reconstructions of sedimentation accumulations were performed. The facies analysis of sediments made it possible to elucidate the reservoir unit genesis.

Abstract: Oil recovery factor (ORF) assessment for sites of the Sredne-Ugutskoye field was performed applying various methods. For this field, the ORF prognostic assessment applying the existing methodological approaches is very relevant, as well as the selection of the most appropriate and accurate ORF calculation methods, taking into account the specific features of the geological structure of formations and reservoirs. The research objective is to obtain an adequate assessment of the ORF for productive sites of the Sredne-Ugutskoye field. With the help of a whole group of methods (analogy, empirical-analytical and empirical-statistical methods), predictive calculations of the ORF value for a number of Jurassic-age development sites were performed.

Abstract: One of the acutest problems in the oil and gas industry is the efficient development of low-permeability reservoirs in Jurassic sediments. At that, the choice of efficient technologies can be made basing on the analysis of field-geological and laboratory data, as well as the analysis of previously conducted activities with account of facies genesis of reservoir rocks in the wells, where the geotechnical activities (GTA) are realized. The research objective is the assessment of bottomhole formation zone (BFZ) results for the YUS₁¹ development wells at the Fainsk oil field with the application of hydrocarbon solvents and acid compounds. Using detailed field-geological analysis, the data obtained after the processing of a bottomhole formation area of the development wells with the application of hydrocarbon solvents and acid compounds was assessed.

Abstract: In this paper, the processes of forming the samples of powder materials based on the titanium – nickel and nickel – aluminium systems were investigated. The possibility of conducting self-propagating high-temperature synthesis (SHS) in the nickel – aluminium system without protective atmosphere is shown. The initial heating temperature of the starting mixture is the main factor determining the flow of this process. Its growth leads to an increase of the synthesis speed. The number of the oxides decreases at the same time. Thermodynamic calculations of the combustion reactions were performed under different conditions. Phase analysis has shown the presence of the intermetallic compounds, which correspond to the phase diagram of the nickel – aluminium system. Thermodynamic calculations confirmed the assumption of preferential oxidation of metallic sodium when it was added to the mixture of powders in the titanium – nickel system. Technological features of obtaining products of various functional purposes are justified. The performed research confirms the effectiveness and promising use of self-propagating high-temperature synthesis for the products fabrication by powder metallurgy methods.

Abstract: One way to increase the payload capability of quadrotor is to employ a team of quadrotors and control them in fix formation to carry large dimension payload. This is also known as force multiplication technique. Therefore, this work intends to explore a new concept to control a scalable team of quadrotors by introducing a supervisary quadrotor in a two tier architecture or in master-slave mode.Once the payload is lifted, the supervisory quadrotor will guide the team of quadrotors beneath it to the desired destination and gently put down the payload.. The advantage of this concept is that the control algorithm can be easily adjusted when a new team of more powerful quadrotors or even multirotor vehicles become available to carry the load. This is seen as an important development in pushing quadrotor technology for industrial applications. Furthermore, this type of system is more flexible because it is able to operate in both indoor and outdoor environment.

Abstract: The paper presents a formation of residual stresses near the weld-affected zone. It is shown that the residual stress values depend on load application and the type of weld joints. The proprietary know-how is suggested for the analysis of stress and strain state using measurement of the ultrasound velocity in weld joints under load. A correlation between effective and residual stresses is shown when testing the bridge crossing over the river Tom (Tomsk, Russia). A method of reducing these stresses using the ultrasonic impact treatment is suggested herein.

Abstract: This paper describes the formation and change of Chinese local administration system , and pointed out the shortcomings of its existence with a series of reform measures, so that the local administration system has been improved and strengthened, adapted to the local development of the socialist market economy needs , and ultimately to promote the development of social productive forces.

Abstract: A three-dimensional model of micro-turning using the finite element method (FEM) is created in this paper to analyzed the formation mechanism and influencing factors of feed-direction burr in micro-turning. According to the simulation and analysis result, in micro-turning,the deformation of the workpiece feed direction end is the combined action of the plastic bending deformation and shear slip deformation, and plastic bending deformation influences burr height and shear slip deformation affects the burr root thickness. Meanwhile, due to the amount of material involved in different deformation actions is changed, compared with conventional scale cutting, the various influencing factors have significant differences effect on the size of burr.

Abstract: Monitor and predict the change of navigation channel silt is important to ensure the safety of the channel while one of many difficulties is the deformation monitoring data is complicated and nonlinear, so its difficult to establish a deterministic model. Supporting vector machine could be widely used in the prediction of the formation of navigation channel silt because it has a good generalized ability, which could solve the problems like small sample, nonlinear, high-dimension. Because whether the algorithm could work or not based on the selection of the parameters, so a PSO-SVM based prediction model of the formation of the silt was established by using particle swarm optimization, which is a the fast overall optimization, and then was used to optimize the model parameter of the support vector machine. Study shows utilize this model in the silt formation in Huanghua harbor is plausible.