储层矿物对TSR影响的轻烃地球化学表征

热化学硫酸盐还原反应(TSR)是世界沉积盆地深埋高温油藏油气勘探开发需要共同直面的一个难题。目前，尽管在TSR成因机理方面取得了一系列研究进展，然而TSR的环境制约因素和可能作用机制还有待完善，尤其储层矿物对TSR的影响。本项目基于不同储层矿物介质环境作用下TSR模拟实验结果，紧扣中间产物轻烃化学演化，探讨储层矿物介质对TSR反应速率和反应产物形成的影响。以不稳定有机硫系物在诱发TSR中所扮演的关键角色为切入点，从储层矿物对不稳定有机硫系物催化效应的控制角度，探讨她对TSR反应速率的影响；从储层矿物对TSR中间产物化学演化控制角度，探讨她对TSR中间产物形成的影响。通过该项目研究希望补充和完善TSR的环境制约因素和可能作用机制，为沉积盆地深部油藏资源评价和TSR成因硫化氢化学动力学模型准确建立提供科学依据。

Thermochemical sulfate reduction (TSR) has been a big challenge for petroleum exploration and exploitation in the deep hot hydrocarbon reservoirs within sedimentary basins around the world. The impacts of environmental elements, especially inorganic minerals in the petroleum reservoirs require deep investigations, even though great advances have been obtained in the mechanisms of inducing TSR recently. This study focuses on the evolution of light hydrocarbons during TSR with the presence and absence of various reservoir minerals in the laboratory to decipher the impacts of reservoir minerals on the reaction rates and intermediate compounds formation of TSR. It is well known that labile sulfur organic compounds play a critical role in inducing TSR. Due to improve or reduce the catalytic functions of labile sulfur organic compounds, reservoir minerals are supposed to have an important impact on the reaction rates of TSR; Due to the possibility of changing the reaction pathways of intermediate compounds, Reservoir minerals are also considered to act as a crucial role in regulating the occurrence of intermediate products including gaseous hydrocarbons and liquid low molecular weight hydrocarbons. This investigation could add new values in understanding the impacts of inorganic minerals within the oil and gas reservoirs on TSR, and should be hence helpful in resource evaluation of deep hot reservoirs in sedimentary basins and kinetic models construction of H2S formation during TSR.