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在解释油井的不稳定测试资料时，对井筒中流体流不出地表的段塞流动，采用常规解释方法获得的地居参数不能反映地层的真实特性。通常在钻井和完并过程中，储集居将不可避免地受到损害，形成污染带。针对这种复合油藏特征，建立了井筒流体段塞式流动的数学模型，并求得其拉氏空间的解。同时，研制出了用于分析实测压力历史的理论图版。利用理论图版，对储集层的正、负污染和未污染等情况均可进行分析。通过对实测压力历史的分析，可以得到井底储集层污染程度和污染半径等参数，这对指导开发过程中的增产措施具有重要的意义。该模型的解适用于分析钻井完并过程中的DST测试资料和低渗透油藏非自喷井的不稳定试并资料。
In interpreting the unstable test data of the well, the geologic parameters obtained by conventional interpretation methods do not reflect the true characteristics of the formation due to slug flow of the surface fluid in the wellbore. Normally, during drilling and completion, the reservoir will inevitably suffer damage and form a pollution zone. Aiming at the characteristics of this compound reservoir, a mathematical model of slug flow in slug flow was established and the solution of Laplace space was obtained. At the same time, developed a theoretical plate for the analysis of measured pressure history. Using theoretical plates, positive and negative and uncontaminated reservoirs can be analyzed. Through the analysis of measured pressure history, parameters such as pollution degree and pollution radius of bottom hole reservoir can be obtained, which is of great significance to guide the stimulation measures in the development process. The solution of this model can be used to analyze the DST test data during the drilling process and the unstable test data of non-self-injection wells in low permeability reservoirs.