Hydrocarbon migration mechanism into a reservoir is one of the most controversial in oil and gas geology. The research aimed to study the effect of supercritical carbon dioxide (СО2) on the permeability of sedimentary rocks (carbonates, argillite, oil shale), which was assessed by the yield of chloroform extracts and gas permeability (carbonate, argillite) before and after the treatment of rocks with supercritical СО2. An increase in the permeability of dense potentially oil-source rocks has been noted, which is explained by the dissolution of carbonates to bicarbonates due to the high chemical activity of supercritical СО2 and water dissolved in it. Similarly, in geological processes, the introduction of deep supercritical fluid into sedimentary rocks can increase the permeability and, possibly, the porosity of rocks, which will facilitate the primary migration of hydrocarbons and improve the reservoir properties of the rocks. The considered mechanism of hydrocarbon migration in the flow of deep supercritical fluid makes it possible to revise the time and duration of the formation of gas–oil deposits decreasingly, as well as to explain features in the formation of various sources of hydrocarbons and observed inflow of oil into operating and exhausted wells.

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深层流体及其在烃类运移和油藏形成中的作用，以超临界 СO2 为例

油气运移机理是油气地质学中最具争议的问题之一。该研究旨在研究超临界二氧化碳（СО2) 对沉积岩（碳酸盐、泥岩、油页岩）的渗透率，通过超临界 СО 处理岩石前后氯仿提取物的​​产量和气体渗透率（碳酸盐、泥岩）进行评估2. 已经注意到致密的潜在油源岩的渗透率增加，这是由于超临界СО的高化学活性导致碳酸盐溶解成碳酸氢盐的原因2和溶解在其中的水。同样，在地质过程中，将深层超临界流体引入沉积岩中可以增加岩石的渗透率，可能还会增加岩石的孔隙度，这将有利于烃类的初次运移并改善岩石的储层性质。深部超临界流体流动中烃类运移机理的研究使得油气沉积形成的时间和持续时间逐渐减少，解释各种烃源的形成特征和观测到的流入量成为可能。油进入工作井和排油井。