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国内外石油地质实验室对烃源岩的总有机碳测定方法,因普遍存在烃源岩TOC%测定数据低,而无法对生油、气碳酸盐岩作出合理评价。本次对含碳酸盐较高的南ZK01井烃源岩酸解液中流失有机物量实验研究表明,含碳酸盐烃源岩酸解液中存在大量的有机物,是百分之百可成烃的良好有机物。而常规TOC测定中因酸解液和水洗程序造成的误差,会导致研究、勘探、储量计算到生产的一系列误差,尤其是可排出烃的误差会更大。因此,鉴于酸解液中流失物的生排烃贡献,本文对总有机碳低且又大量产油和气的烃源岩评价进行了重新认识。
Domestic and foreign petroleum geology laboratories for total organic carbon determination of source rocks, because of the prevalence of TOC% low source rock data, and can not be a reasonable assessment of oil and gas carbonate rocks. The experimental study on the amount of organic matter lost in the acid solution of hydrocarbon source rocks in the south ZK01 well with carbonate shows that a large amount of organic matter exists in the acid solution of carbonate source rocks and is 100% Organics. However, the error caused by the acid solution and the washing process in the conventional TOC measurement will lead to a series of errors in the research, exploration and reserve calculation to production, and in particular, the error in discharging hydrocarbons will be greater. Therefore, in view of the contribution of hydrocarbon generation and expulsion to leachate in acid solution, this paper re-evaluated the evaluation of hydrocarbon source rock with low total organic carbon and large amount of oil and gas.