«Oilfield engineering»

APPROACHES TO MONITORING THE PROCESS OF LIQUID HYDROCARBONS GENERATION, RECOVERED FROM KEROGEN-CONTAINING ROCKS UNDER COMMERCIAL CONDITIONS

UDC: 622.276.654
DOI: 10.33285/0207-2351-2021-11(635)-34-39

Authors:

¹ LLC "LUKOIL-Engineering", Moscow, Russian Federation

Keywords: thermal gas treatment, development monitoring, gas chromatography, synthetic oil

Annotation:

One of the applied technologies aimed at involving of hard-to-recover reserves in the development contained in the Upper Jurassic bituminous formation of the Western Siberia is thermal gas treatment (TGT). During the course of a field experiment at the Sredne-Nazymskoye field in order to monitor the development and to increase oil recovery, the task of assessing the share of synthetic oil, which is formed as a result of kerogen thermal destruction, when using TGT, in the total production of wells, becomes urgent. The paper shows that the portion of synthetic oil in a production well can be estimated on the basis of comprehensive geochemical studies. Compositions of native (initial) oil, synthetic oil obtained experimentally as a result of kerogen pyrolysis, and their mixtures in different proportions were studied by applying the methods of gas chromatography and gas chromatography-mass spectrometry. To assess the impurity of synthetic oil, the most informative molecular parameters related to indicators of the degree of its catagenetic maturity have been determined. Palette curves were built that allow identifying the portion of synthetic oil exceeding 15 % of the total volume of oil produced by the well.

Bibliography:

1. Новый отечественный способ разработки месторождений баженовской свиты. Ч. 1 / В.Ю. Алекперов, В.И. Грайфер, Н.М. Николаев [и др.] // Нефт. хоз-во. - 2013. - № 12. - С. 100-105.
2. Новый отечественный способ разработки месторождений баженовской свиты. Ч. 2 / В.Ю. Алекперов, В.И. Грайфер, Н.М. Николаев [и др.] // Нефт. хоз-во. - 2014. - № 1. - С. 50-53.
3. Исследование процесса термического воздействия на образцы пород баженовской свиты / В.И. Кокорев, С.А. Власов, Н.Г. Судобин, А.М. Полищук // Нефтепромысловое дело. - 2010. - № 3. - С. 12-19.
4. Немова В.Д. Многоуровневая литологическая типизация пород баженовской свиты // Нефт. хоз-во. - 2019. - № 8. - С. 13-17.
5. Немова В.Д., Панченко И.В. Локализация приточных интервалов баженовской свиты и их емкостное пространство на Средне-Назымском месторождении // Нефтегазовая геология. Теория и практика. - 2017. - Т. 12. - № 1.
6. Немова В.Д. Анализ техноморфизма на примере термического воздействия на верхнеюрские отложения Западной Сибири // Нефт. хоз-во. - 2021. - № 3. - С. 22-27.
7. Kaufman R.L., Ahmed A.S., Hempkins W.B. A new technique for the analysis of commingled oils and its application to production allocation calculation // Proceedings of 16th Annual Indonesian Petro. Assoc. - 1987. - Paper IPA 87-23/21. - P. 247-268.