Territorija Neftegas № 3 2014
Read in this issue:
» Algorithms for solving some tasks of electrical system dispatching control of industrial enterprisesOpen PDF
Development of electrical systems of oil and gas industry enterprises results in complication of their schemes, extensive application of own sources of electric power supply. Such systems require more balanced approaches to their control. Especially it refers to electrical systems containing generators or auxiliary power plants. Due to increasingly more requirements to the degree of associated petroleum gas recovery, the share of such systems in the oil and gas industry constantly grows.
Keywords: electrical system dispatching control, formalization of system status, state graphs, classification of the states of electrical systems, routine switching plan, Ford algorithm, Dejkstra algorithm, Floyd algorithm.
» Assessment of technical potential of wind and solar power industry of RussiaOpen PDF
The paper is an intermediate result of the research undertaken within the scope of joint Master training program «Energy saving technology for the gas pipeline systems» of Gubkin Russian State University of Oil and Gas and Royal Institute of Technology (Stockholm, Sweden). As already shown in previously published papers, Russia is one of the worldwide leaders in internal energy consumption. Moreover, the efficiency of energy consumption is extremely low [1,2]. This is a kind of energy fee for the huge territory occupied by Russia, 70% of which is within northern and north-polar latitudes. On the other hand, our huge territory is at the same time our competitive advantage. The below procedure is proposed for assessment of the technical potential of Russia, i.e. using currently existing tools, in the field of application of two most prevailing sources of renewable energy in the worl dwind energy and solar energy.
Keywords: GDP, energy consumption, specific energy consumption, energy saving, renewable energy sources, efficiency of energy consumption, wind energy, windwheel, solar energy, level of insolation.
Fields facilities installation
» Integrity management of infrastructure facilities of the oil and gas fields. Prioritization and management of risks of the facilities integrity violation for oil processing and pumping, recovery of associated gas and systems for maintenance of reservoirOpen PDF
The article is the continuation of the series of publications started in No.9, 10, 11, 12 of the NEFTEGAS Territory magazine for 2013. The previous articles contained description for the stages of the life cycle of the infrastructure of oil and gas fields, definitions given for management of the facilities integrity, standard costs and key indicators for the efficiency of this process. By the example of the pipeline infrastructure, the possibility is shown to identify, assess and prioritize the risks. However, the approaches to the integrity management and enhancement of the level of the industrial safety of complex infrastructure facilities, such as installations for oil processing and pumping, systems for reservoir pressure maintenance, collection and recovery of associated gas, etc., are complicated as compared to uniform facilities considered. A positive experience in risk-oriented integrity management of complex facilities is described in this paper, the possibility is shown in prioritization of risks with application of barrier system. The approaches to the solution of the problems in risk-oriented integrity management of hazardous production facilities for the entire asset/field including uniform facilities with low interdependence, and complex facilities, are described. It is shown that the most important tool for integrity management is a common matrix of risks that includes assessment of the probability and consequences both for the integrity violation as risk contributing event and the health, safety and environment risks. For the managers and oil engineers engaged in design and operation of surface oil and gas, and other infrastructure facilities, specialists in the field of risk assessment, health, safety and environment, technical and economic assessment of the assets.
Keywords: risk, risk prioritization, complex facility, barrier, matrix of risks.
» Dependence of the specific productivity of wells on their facies and salinization of reservoirs based on the case of Botuobinskiy horizon of Chayandinskoye fieldOpen PDF
The work studies dependence of the specific productivity coefficient of terrigenous reservoirs of Botuobinskiy horizon on their facies. Facies with the best filtration and storage capacity properties are determined. Dependence of the reservoir rocks pore space salinization on the specific productivity of wells is evaluated, and two types of reservoir rocks are distinguished according to the findings.
Keywords: specific productivity coefficient, reservoir facies, filtration and storage capacity properties, salinization of pore space.
» Possible use seismic data for predicting reservoir properties deposits of Tympuchikansky fieldOpen PDF
The results of studying the structure of productive deposits Tympuchikansky oil and gas field, located in the territory of the Republic of Sakha (Yakutia). Analyzed permeability and porosity and acoustic properties of rocks. Considered justified and the main directions of further studies of reservoir rocks during the design seismic surveys 3D. Particular attention is paid to the issue of predicting reservoir properties and deposits talahskogo hamakinskogo horizons based on the properties of the wave field.
Keywords: Tympuchikanskoye field, 3D seismic prospecting, Talakhsky horizon, Khamakinsky horizon, structure of reservoirs of terrigenous deposits, depositional conditions, post-sedimentation reconversions, petrophysical properties of sand and aleurolite rocks, acoustic logging.
Repair and maintenance of wells
» Study of the principle of action of various classes surfactants during wash-out of asphalt, resin and paraffin depositsOpen PDF
The results were presented to determine the wash-out ability of asphalt, resin and paraffin deposits using water solutions of various classes surfactants. The kinematic coefficient of viscosity, optical density and interfacial tension were measured to determine the possible area of micelle restructuring. The research is focused on selection of surfactant combination to produce synergetic effect on increase of wash-out ratio of asphalt, resin and paraffin deposits.
Keywords: wash-out of asphalt, resin and paraffin deposits, micelle, washing action, solubilisation, combination of various classes of surfactants, critical concentration of micelle formation.
Pipelines operation and maintenance
» Optimum thickness definition technique of ground pipelines isolationOpen PDF
In the suggested work the technique of thermal calculations of pipelines is specified on the basis of the received new results. For definition of optimum thickness of ground pipelines isolation the objective function is offered. The dependences of objective function from thickness of pipelines isolation are received.
Keywords: heat pipeline, heat insulation.
» Estimation of efficiency destination potentially dangerous sections of main gas pipelines on the grounds of predisposition to SCCOpen PDF
According to the results of previous studies identified the key factors of the environment, the combination of which makes it possible to stress corrosion, algorithms have been developed to prevent SCC on potentially dangerous sites operated and newly built gas mains. The selection and location of such sites is extremely important as the design stage and at the stage of operation. The paper proposes a procedure for evaluating the effectiveness of destination potentially dangerous sections of pipelines on the basis of susceptibility to SCC, as well as examples of evaluating the effectiveness of selection for potentially dangerous sites operated gas transportation systems
Keywords: stress corrosion cracking, SCC, stress corrosion, potentially dangerous sections, PDS SCC, reliability of pipelines, preventing SCC, algorithm of detection PDS.
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