新疆A地区烃源岩干酪根显微组分特征浅析

Study on Characteristics of Microscopic Composition of Source Rock Kerogen in Area A, Xinjiang

摘要: 通过对新疆A地区烃源岩干酪根样品有机质类型显微组分特征研究，确定生烃方向和生烃潜力，对页岩油气资源进行潜力评价。结果表明：TI ≥ 80的I型干酪根有4件，占比2.21%；40 < TI < 80的II1型有77件，所占百分比42.54%；0 < TI < 40的II2型有62件，占34.25%；TI < 0的III型有44件，占20.99%。样品烃源岩有机质类型好，包含大量的腐泥型、腐泥型–混合型，样品整体以II型为主，不仅能形成油，还能形成大量的气，即油伴生气；III型次之，生烃能力相对较差，主要形成气态烃；I型含量最少。

Abstract: By studying the characteristics of the organic matter types of the source rock kerogen samples in area A of Xinjiang, the hydrocarbon generation direction and potential are determined, and the potential of shale oil and gas resources is evaluated. The results show that: Type I kerogen has 8 cases of TI ≥ 80, accounting for 4.04%; Type II1 kerogen has 77 cases of 40 < TI < 80, accounting for 38.89%; Type II2 kerogen has 69 cases of 40 < TI < 80, accounting for 34.85%; Type III kerogen has 44 cases of TI < 0, accounting for 22.22%. The sample source rock has good organic matter type and contains a large amount of sapropel type, sapropel-mixed type. The whole sample is mainly type II, not only can form oil, but also form a lot of gas, that oil and gas; Type III secondly, the hydrocarbon generation capacity is relatively poor, mainly the formation of gaseous hydrocarbons; the content of I type the least.