Shale oil oiliness evaluation method based on logging data

• Main Authors: LIU HUIHUI, FU JIYOU, XU SHENGCHI, ZOU XIANFENG, HOU LIHU, CHEN LIANG, ZENG JIE, CHEN XIANGHUI
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to the technical field of reservoir oiliness evaluation methods, in particular to a shale oil oiliness evaluation method based on logging data, which comprises the following steps: proposing a shale oil reservoir oiliness evaluation formula by using low-cost rock pyrolysis chromatographic logging data and rock mine data, and then intersecting with the effective porosity of nuclear magnetic logging to obtain a shale oil reservoir oiliness evaluation result. Dividing evaluation intervals according to the cross plot to form a shale oil reservoir oiliness evaluation chart, and combining the chart with a shale oil reservoir oiliness index (LI) value to obtain a reservoir oiliness evaluation result. The invention provides a technical scheme for obtaining the oiliness of the reservoir under the condition of non-nuclear magnetic logging, the goodness of fit can reach 0.85 or above when the method is practically applied to a Gicosale shale oil block of the Xinjiang oilfield, the precision of the