Kazakhstan journal for oil & gas industryKazakhstan journal for oil & gas industry2707-42262957-806XKMG Engineering10060510.54859/kjogi100605Review ArticleFormation and preservation of reservoirs at great depthKuandykovBaltabek M.bmku@meridian-petroleum.kzSyngaevskiiP. E.pavel.syngaevsky@chevron.comHafizovS. F.<p>Doctor of Science, Head of E&A Department</p>khafizov@gubkin.ruhttps://orcid.org/0000-0003-1426-7649“Meridian Petroleum”ChevronRussian State University of oil and gas named after Gubkina200720224211261302202207072022Copyright © 2022, Kuandykov B.M., Syngaevskii P.E., Hafizov S.F.2022<p><em>The article comprises of the conditions for the formation of reservoirs that retain their properties at great depths, as well as the geological features that are necessary for their safety during subsidence. Since the factors that ensure preservation are very diverse, their digitization is quite difficult; rather, we should say on considering many factors, the combination of which, and not necessarily all at once, is sufficient to forecast the existence of hydrocarbon deposits (and therefore, first of all, reservoirs) at depths that have become technologically accessible, that is, to expand the range geological forecast, which is technologically achieved.</em></p>ultra-deep sectionsterrigenous and carbonate reservoirsprimary and secondary porosityreservoir propertiesаса терең қималартерригенді және карбонатты коллекторларбастапқы және қайталама кеуектіліксүзгілі-сыйлымдылық қасиеттерісверхглубокие разрезытерригенные и карбонатные коллекторыпервичная и вторичная пористостьфильтрационно-емкостные свойства[Jian Li, She Yuanqi, Gao Yang, Yang Guiru, Li Mingpeng, Yang Shen. 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