Modeling Parameters of Reliability of Technological Processes of Hydrocarbon Pipeline Transportation

Abstract

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

Smart control of gas distribution networks reliability

“…When evaluating and planning indicators the use of factor analysis based on the graph theory [4,5,[11][12][13][14] is essential. It solves two main problems of monitoring: the need for a comprehensive and, at the same time, detailed consideration.…”

“…The authors analyzed the problems of assessing the reliability of gas distribution networks in modern conditions [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Analysis of existing GDN operation systems shows that there is a range of issues impeding the qualitative monitoring of reliability and safety.Theseproblemsmayinclude:legalaspectsandboundariesofresponsibilitiesofoperatingco mpanies; architectural features of gas networks, difficult to assess and optimize; technical features of high, medium and low pressure networks; lack of modern assessment tools and measuring devices adapted to on-line monitoring systems, as well as lack of expert systems that can be integrated in complexes of satellite geo-monitoring and domestic control systems with the use of mobile expert notification systems for the end user.…”

Ballasting pipeline moving in horizontal well as method of control sticking phenomenon

“…When pulling, water is periodically poured into the cavity of the pipe, thereby unloading the pipeline to be pulled (4). When the pipeline is completely filled with water, too much effort may be exerted to hold down the pipeline to the lower generating line of the well [11,12]. They can be adjusted by using an internal pipe or by partial filling with water (Fig.…”

Reduction of movement resistance force of pipeline in horizontal curved well at stage of designing underground passage

“…So it usually happens in practice. Just as the process of drilling and expanding the pilot well, the process of pulling the working pipeline has a cyclic character [10], since the string consists of separate drill pipes connected to each other. They have the property of bending within certain limits, but the most significant change in the radius of curvature of the profile occurs just at the junction of two adjacent drill pipes.…”