裂缝型底水油藏试井解释实例探讨

A Case Study of Well Test Interpretation in Fracture Reservoir with Bottom Water

在油气井生产过程中,对试井数据进行解释,不但可以获取油藏地层压力及生产井产能资料;而且通过进一步试井分析还可以了解井筒附近地层是否存在污染、地层能量补给情况、含水率上升情况及井间干扰等更深层的地层信息。介绍了试井解释过程中的常用参数推导、裂缝及双孔介质存在时的经典双对数曲线形态,重点对实际生产井采用裂缝加双孔介质模型进行了试井解释,结果显示双对数曲线拟合良好,因此认为试井解释合理,解释结果可信度高。

The reservoir formation pressure and production well production data can be acquired by well test data interpretation in oil and gas production process. And through the further testing analysis we will know the deeper strata information such as the presence of pollution in the near wellbore formation, the energy supply situation of formation, water cut rising and interference between wells. This paper introduces the deduction of common parameters, the classic shape of double logarithmic curve while the fracture and dual porosity exists in the process of well test interpretation. Based on the test interpretation of fracture and duel porosity model which is using in actual production well, the double logarithmic curve is fitting well. So the interpretation is reasonable and reliable.