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油藏水驱开发过程中，随着水淹程度的不断增加，储层中的原油性质产生了相应的变化，通过对开发调整井的岩心或岩屑进行地球化学录井，可以获得单位岩石含油量ST，氯仿沥青“A”等多项参数，这些参数的变化可以判别油层的开采状况，评价油层水淹程度。矿场应用结果表明，解释符合率在75％左右。
During the development of reservoir water flooding, with the increase of water flooding, the properties of crude oil in reservoirs have been changed correspondingly. Geochemical logging of cores or cuttings for the development and adjustment of wells can be used to obtain oil content per unit rock Amount of ST, chloroform bitumen “A” and many other parameters, changes in these parameters can determine the status of the exploitation of the reservoir to assess the degree of flooding reservoir. Mine application results show that the interpretation of coincidence rate of about 75%.