油水粘度比对含水率的测试结论的影响研究

针对很多井测试得到的是水井,生产后是油井的情况,研究了油水粘度比对含水率测试结果的影响。根据测试管柱的结构进行分析,建立了相应的数学模型。计算了不同原油粘度下测试管柱入口端与出口端含水率的差别,得出测试器中的油水比不同于地层的油水比、测试得到的含水率值一般要高于地层的真实含水率值的结论。

The Research for the Water- Oil Viscidity Ratio Influencing on the Conclusion of Water Cut in the Test

To situation of that many wells are oil wells after production but being water wells when tested, the paper researches the water-oil viscidity ratio influencing on the conclusion of water cut in the test. According to analysis for structure of testing string, the mathematics model is built up. By predigesting the model, the calculation method is found out and the difference of the water cut between the en-trancement and the export under the different crude oil viscidity during the test is calculated out. The conclusion is made that water-oil ratio in tester is not the same as that in formation and water cut of the testing is higher than that of in the reservoir.