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近年来，由于水平钻井和完井技术的提高。成功地实现了多井底水平油井的钻井（这样的水平井是具有两个或两个以上的水平并眼，它们穿过不同油层，但通过同一井筒产油的井）。对于这些复杂水平井的特性评价，导致了研究工作的深入和发展。本文论证了在评价三井底水平油井特性中所使用的过程，本过程将压力恢复和产量／时间关系曲线相结合。运用了一个统一的数学模型来产生压力和日产量的响应。从而实现才压力测试的解释和性能预测，这个过程在加利福尼亚海滨的DosCuadras油田的几口新完钻的三井底水平油井的评价中得到了证实。来自于实测的结果表明。这个过程在评价这些井的特性中是有效的。从压力测试的解释中得到了储量的井眼参数，确定了所有水平井眼的产量。在产量的历史拟合中，使用了计算的模型参数，并对油井的长期特性做了预测。为了改善历史拟合过程，使用了解卷税法。另外，在同一油田中把这些三井底水平井的特性评价与先前所钻的单井底水平井做了对比，比较的结果证明。新型的三井底水平井的钻井技术有较高的经济效益，钻一口三井底水平井的资金仅为钻三口单井底水平并资金的三分之二，两三井底水平井的平均采收率为单井底水平并的采收率的2.5倍。
In recent years, due to the improvement of horizontal drilling and completion technologies. Successful drilling of multi-well horizontal wells has been successfully achieved (such horizontal wells are wells with two or more levels and intersections that pass through different reservoirs but are produced by the same wellbore). The evaluation of the characteristics of these complicated horizontal wells has led to the further research and development. This article demonstrates the process used to evaluate wellbore characteristics at the bottom of Mitsui, which combines pressure recovery and yield / time curve. A uniform mathematical model is used to generate pressure and daily output responses. In order to achieve the pressure test interpretation and performance prediction, the process was confirmed in a few newly drilled wells at the bottom of the Dos Cuadras field on the California coast. From the measured results show. This process is valid in evaluating the characteristics of these wells. From the interpretation of the stress test, the wellbore parameters of the reserves were obtained and the production of all horizontal boreholes was determined. In the historical yield fit, the calculated model parameters are used and the long-term characteristics of the well are predicted. In order to improve the history fitting process, the Tax Law is used. In addition, the performance evaluation of these horizontal wells at the bottom of the well is compared with that of the single horizontal well drilled in the same oilfield. The results of the comparison prove. The new drilling technology of horizontal well at the bottom of the well has high economic benefits. The drilling of a horizontal well at the bottom of a well is only two thirds of the bottom level of a single well drilled and two thirds of the capital. The average recovery rate of horizontal wells at the bottom of two or three wells It is 2.5 times of the recovery rate at the bottom of a single well.