Discrimination method for charging period of underground biodegradation heavy oil reservoir
A technology for biodegradable heavy oil reservoirs, which is applied in the field of discriminating charging periods of underground biodegradable heavy oil reservoirs, can solve problems such as difficult discrimination, fuzzy characteristics of biodegradable heavy oil under the microscope, and difficult crude oil identification
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[0056] The present invention will be further described below in conjunction with embodiment. refer to figure 1 The technical flow chart shown, takes the crude oil in the Hasan area as an example to introduce in detail the method for discriminating the filling phase of the oil reservoir described in the present invention.
[0057] S1: Comparative study of oil sources to determine the same set of oil sources.
[0058] The source rocks of the crude oil in the Hasan area come from the adjacent Permian Fengcheng Formation in the Mahu sag and the underlying Permian Fengcheng Formation source rocks in the Hasan area. The two sets of source rocks have similar organic parent materials but differ in salinity. Therefore, the basis for distinguishing the two sets of oil sources is mainly the biomarker parameters reflecting salinity. Here, after research and comparison, ETR and new gammacerane parameters can be selected. According to Holba's research in 2001, ETR=(tricyclic terpenes-C ...
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