Condensation Mechanism of Hydrocarbon Field Formation

Abstract

Petroleum geology explains how hydrocarbon fluids are generated, but there is a lack of understanding regarding how oil is expelled from source rocks and migrates to a reservoir. To clarify the process, the multi-layer Urengoy field in Western Siberia was investigated. Based on this example, we have identified an alternative mechanism of hydrocarbon field formation, in which oil and gas accumulations result from the phase separation of an upward hydrocarbon flow. There is evidence that the flow is generated by the gases released by secondary kerogen destruction. This study demonstrates that oil components are carried by the gas flow and that when the flow reaches a low-pressure zone, it condenses into a liquid with real oil properties. The transportation of oil components in the gas flow provides a natural explanation for the unresolved issues of petroleum geology concerning the migration process. The condensation mechanism can be considered as the main process of oil field formation.

On the importance of rock thermal conductivity and heat flow density in basin and petroleum system modelling

“…Here Athy compaction law (Athy, ) was used for simplicity to focus on the thermal effect. Corresponding pore pressures exceeds the hydrostatic pressure at depths greater than 3,780 m with a coefficient of approximately 1.5 and is consistent with field observations (e.g., Batalin & Vafina, ; Karaseva, Gorbachev, Keller, & Ponamorev, ). Matching the temperature and vitrinite reflectance (Figure b,c), the type 1 basal HFD geohistory curves were locally corrected during the last several tens of Ma that can be associated with erosion and with SST decreases in the Neogene period.…”

Regeneration of deposits of hydrocarbon fields of Ukraine

“…Теорія дегазації Землі [11], теорія абіогенного синтезу вуглеводнів [10,22,39,41], «флюїдодинамічні» концепції [25,21], твердження про насичення воднем ядра і мантії Землі [42], конденсаційна модель [2], модель розвитку відновлених флюїдних систем фундаменту та осадового чохла [6], теорія нафтидогенезу [14] відводять мантійному джерелу -глибинному ендогенному фактору -або абсолютну, або домінантну роль у формуванні родовищ вуглеводнів.…”