Известия Томского политехнического университета: Инжиниринг георесурсов (Feb 2021)

STUDY OF EFFICIENCY OF HYDRATE FORMATION INHIBITORS IN THE PROCESS OF PRODUCTION AND TRANSPORT OF HYDROCARBONS IN MARINE CONDITIONS

  • Sergey V. Kitaev,
  • Yury V. Kolotilov,
  • Anton Yu. Plotnikov,
  • Adel A. Kovalev,
  • Shamsutdin K. Sheikhgasanov

DOI
https://doi.org/10.18799/24131830/2021/2/3055
Journal volume & issue
Vol. 332, no. 2
pp. 190 – 199

Abstract

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The relevance of the research is caused by the need to develop effective methods to prevent hydrate formation in underwater gas pipelines. The rapid formation of gas hydrates is promoted by high pressure and low temperature in deep-sea underwater structures, which is one of the most difficult problems in ensuring the operability of the pipeline. The main direction of ensuring trouble-free operation of pipelines is to support the processes of using hydrate inhibitors during the operation of hydrocarbon transport facilities, taking into account their advantages and disadvantages. The main aim of the research is to develop a method for evaluating the effectiveness of hydrate inhibitors in production and transport of hydrocarbons in marine conditions. The objects of the research are performance indicators for implementation of hydrate inhibitor use methods with an assessment of the risk associated with hydrate formation, which helps prevent hydrate blockage and ensure equipment integrity. Methods. To increase the reliability of the interpretation of methods for the use of hydrate inhibitors, it is proposed to use the OLGA software, which is a tool for modeling the analysis of pumping oil, natural gas, and produced water during multiphase transportation. This modeling tool allows you to visualize key aspects of dynamic events that reflect the reality of hydrocarbon transportation. The OLGA software suite has allowed developing oil and gas fields in deeper waters and further offshore than it was possible without this technology. Results. Using OLGA software, it was possible to consider existing methods for preventing hydrate formation and concluded that cold flow technology, as well as the addition of a 10 % methanol solution, are the most beneficial solution for the Arctic compared to other technologies and other concentrations, respectively.

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