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Alkyldibenzothiophenes: molecular tracers for filling pathway in oil reservoirs

机译：烷基二苯并噻吩：用于油藏填充路径的分子示踪剂

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摘要

Based on the thermodynamic stability and hydrogen bond mechanisms, alkyldibenzothiophene molecnlar ratios, 4-/1-MDBT, 2,4-11,4- and 4,6-/l,4-DMDBT, are used to characterize organic maturity and oil migration, which can act as molecular tracers for the filling orientation and pathway in oil reservoir. The application of aforesaid molecular parameters, in a Neogene sandstone reservoir of the XJ24-3 Oilfield, Zhujiangkoii Basin and in an Ordovician carbonate reservoir of Karst pore-fissure-network type in the Tahe Oilfield, Tarim Basin, manifests that those ratios are reliable tracers compared with other molecular ratios, and thus, al-kyldibezothiophene parameters may be used in a wide range of maturity, especially for high- to post-mature oil and severely biodegraded oil, both of which are short of effective molecular parameters.
机译：基于热力学稳定性和氢键机理，使用烷基二苯并噻吩分子比率4- / 1-MDBT，2,4-11,4-和4,6- / 1,4-DMDBT表征有机成熟度和油迁移可以作为分子示踪剂，用于油藏的注油方向和路径。上述分子参数在珠江口盆地XJ24-3油田新近系砂岩油藏和塔里木盆地塔河油田喀斯特孔裂网状奥陶系碳酸盐岩油藏中的应用表明，这些比值是可靠的示踪剂。与其他分子比率相比，烷基二苯并噻吩参数可以在很宽的成熟度范围内使用，尤其是对于高至成熟后的机油和严重生物降解的机油，这两种方法均缺乏有效的分子参数。

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