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体积压裂水平井五区复合模型实用性强、计算速度快,但模型基于定产假设推导,只能计算定产量生产问题,而非常规油藏生产过程中很难保证定产量生产,生产制度往往较复杂。为此,基于叠加原理,将五区复合模型改进为可以计算包括变产量、变流压等任意复杂生产制度的情形,突破了以往五区复合模型定产条件的限制。在此基础上,建立了任意复杂生产制度体积压裂水平井试井解释方法,并对一口体积压裂实例井的不稳定试井资料进行了解释,得到了储层及压裂裂缝参数,说明该方法可以解释具有复杂生产制度的体积压裂水平井不稳定试井资料。研究结果可为非常规油藏体积压裂水平井不稳定试井资料解释提供一定的理论基础。
The five-zone composite fracturing model of horizontal well with volume fracturing is practical and fast in calculation speed. However, the model can only be used to calculate the fixed-volume production problem based on the fixed-production hypothesis. However, it is difficult to ensure the fixed-volume production and production system in unconventional reservoir production Often more complicated. Therefore, based on the principle of superposition, the five-zone compound model is improved to be able to calculate any complicated production system including variable output and variable pressure, which breaks through the limitations of the fixed-production conditions of the previous five-zone composite model. On this basis, a well test interpretation method for a volumetric fracturing horizontal well with any complicated production system is established, and the instability test data of a volumetric fracturing well are explained. The reservoir and fracturing fracture parameters are obtained, indicating This method can be used to explain the well test data of fractured horizontal well with complicated production system. The results of this study can provide some theoretical basis for the interpretation of unstable well test data of unconventional fractured horizontal wells.