Abstract. On the basis of methods of system analysis and parametric reliability theory, the mathematical modeling of processes of oil and gas equipment operation in reliability monitoring was conducted according to dispatching data. To check the quality of empiric distribution coordination , an algorithm and mathematical methods of analysis are worked out in the on-line mode in a changing operating conditions. An analysis of physical cause-and-effect relations mechanism between the key factors and changing parameters of technical systems of oil and gas facilities is made, the basic types of technical distribution parameters are defined. Evaluation of the adequacy the analyzed parameters of the type of distribution is provided by using a criterion A.Kolmogorov, as the most universal, accurate and adequate to verify the distribution of continuous processes of complex multiple-technical systems. Methods of calculation are provided for supervising by independent bodies for risk assessment and safety facilities

Abstract. Methodology of rapid assessment of reliability index was developed based on system analysis of technological parameters. Within functioning of on-line monitoring system of reliability index of industrial facility this method allows to increase efficiency of making managerial decisions on technical and preventive maintenance. The technique is based on the analysis of technological parameters of operational modes of pipeline transport facilities registered by dispatcher controls. The created technique can be used by the operating, research, design institutes and oil and gas transport enterprises when declaring industrial safety. The received mathematical models allow federal services of supervision, the independent expert organizations to predict the development of reliability in the registered block of dispatching data either in real time mode, or taking into account the dynamics of service conditions of the object.

Abstract. To determine and diagnose the emissions from pipelines operating in the dynamic mode, the model is developed in real time, whereby the determination of the oil leakages volume is possible with sufficient accuracy. The stated methods assume the use of computer equipment and software. The use of sensitive devices and automation of data processing make it possible to achieve high accuracy of calculations. The developed techniques are meant to operate in systems of support and decision-making and expert systems. The rapid assessment results can be used by supervisory agencies to evaluate the damage in case of accidents and failures of pipelines.

Abstract. Based on statistical processing of an array of information and summarizing the experimental data in IUT, analytical dependences for calculating the coefficient of the phase equilibrium under various pressures and temperatures were obtained. The proposed equations for the first time used the quantitative composition of hydrogen which determines, according to the authors, the volatility of the oil or condensate fraction and greatly simplifies relevant calculations in comparison with known analogues. To find the coefficients a computer program was developed that implements a method of non-linear regression. The developed algorithm was tested and proved to be very convenient and efficient for a rapid assessment of experimental studies.