基于物探测井信息及有限试井资料的多井产能预测方法

The method of multi well deliverability forecasting based on the geophysical logging information and the limited well testing data

为克服某些井试井资料少、难以获取有效产能信息,引入产能刻度因子,基于地质统计学理论,研究了影响小层产能刻度因子的小层有效渗透率、有效厚度的计算方法,建立了使用试井动态资料刻度物探测井静态资料,用刻度后的静态资料进行整个气藏的产能预测。该方法能够充分利用地震、物探和测井等静态信息,结合少量重点井的试井动态解释结果进行产能预测。将该方法应用于M气田的某些井,预测得到的产能接近气井实际产能,满足工程计算的需要。

Due to the limited well test data, it is difficult to obtain effective information about deliverability in some wells. In this paper, the calibration factor of deliverability is introduced and the calculation methods of the influencing factors are studied, to establish a deliverability forecasting method. The geophysical logging static information is first calibrated by the dynamic data of the well test. Then the deliverability of the whole field is forecasted by the calibrated static data. The seismic data, the geophysical logging data at the beginning of exploration and production, and the well test dynamic data of few important wells are made the best use in this method. This method is applied in some wells in the M gas field. The forcasting deliverability results agree well with the actual deliverability. The calculation precision of the new method is high enough to meet the demand of the project design.