DEVELOPMENT OF AN INFORMATION-MEASURING SYSTEM FOR IDENTIFYING FLOW MODES OF A WATER-GAS MIXTURE
Authors: Kitabov Andrei N. ,   RN-BashNIPIneft LLC (Company of Rosneft Group), Ivanov Artem V. , Tkachenko Mihail N. , Abutalipov Ural M. ,   RN-BashNIPIneft LLC (Company of Rosneft Group),   RN-BashNIPIneft LLC (Company of Rosneft Group),   RN-BashNIPIneft LLC (Company of Rosneft Group)
Published: August 2024

Relevance One of the newest and most promising technologies for increasing oil displacement efficiency is the injection of a water-gas mixture into the reservoir through a two-pipe system for maintaining reservoir pressure, through a network of injection wells (SWAG-injection). To obtain the effect of implementing the SWAG-injection technology, it is necessary to simultaneously fulfill a set of conditions, the key of which is maintaining a stable finely dispersed structure of the water-gas mixture at the outlet of the mixing device when transporting it to the injection well. However, the conditions for the formation of a stable fine structure at the output of the mixing device lie in a narrow range of technological parameters of its operation, which raises the problem of continuous quality control of the resulting mixture when transporting it into the reservoir in real time, which in turn requires the addition of a set of parameters monitoring tools injection by a device, equipment or system capable to determine the flow regime of water-gas mixture at the outlet of the mixing device. Aim of research Aim of research is to develop an information-measuring system for identifying the flow regimes of water-gas mixtures when pumping them into the reservoir through a network of injection wells, to improve the efficiency of managing the process of maintaining reservoir pressure basing on reliable information about the flow regime of the water-gas mixture in real time. Research methods The development of functional models was carried out on the basis of the SADT (Structural Analysis and Design Technique) methodology, using the standard for functional modeling of systems («IDEF0»). The development and justification of structural and structural-functional diagrams was carried out on the basis of the theory of information systems, the theoretical foundations of electrical engineering and the design of electronic devices. Results One of the possible approaches to formalization is presented, and a functional model of the process of identifying water-gas mixture flow regimes using the IDEF0 methodology is developed. The place and role of the system for measuring the parameters of water-gas mixture in the problem of identifying flow regimes of water-gas mixture has been determined, and the basic requirements for the design of an informationmeasuring system for identifying flow regimes of water-gas mixture have been formed, on the basis of which one of the variants of the block diagram of the information-measuring system for identifying flow regimes of watergas mixture has been developed. The selection of the hardware components of the device for determining the parameters of the hydrocarbons and the subsystem for receiving, converting, processing and displaying information as components of the information-measuring system for identifying the flow regimes of the hydrocarbons has been carried out.