Based on the measurement mechanism of mobility in pressure measurement while drilling, through analyzing a large number of mobility data, it is found that under the condition of water-based mud drilling, the product of mobility from pressure measurement while drilling and the viscosity of mud filtrate is infinitely close to the water phase permeability under the residual oil in relative permeability experiment. Based on this, a method converting the mobility from pressure measurement while drilling to core permeability is proposed, and the permeability based on Timur formula has been established. Application of this method in Penglai 19-9 oilfield of Bohai Sea shows: (1) Compared with the permeability calculated by the model of adjacent oilfields, the permeability calculated by this model is more consistent with the permeability calculated by core analysis. (2) Based on the new model, the correlation between the calculated mobility of well logging and the actual drilling specific productivity index bas been established. Compared with the relationship established by using the permeability model of an adjacent oilfield, the correlation of the new model is better. (3) Productivity of four directional wells was predicted, and the prediction results are in good agreement with the actual production after drilling.

通过对随钻压力测量中的迁移率的测量机理，通过分析大量的随钻数据，发现在水基泥浆钻井条件下，随钻压力测量中的迁移率与泥浆粘度的乘积。在相对渗透率实验中，滤液在残油下无限接近水相的渗透率。在此基础上，提出了将随钻测压迁移率转换为岩心渗透率的方法，并建立了基于帖木尔公式的渗透率方法。该方法在渤海蓬莱19-9油田的应用表明：（1）与相邻油田模型计算的渗透率相比，该模型计算的渗透率与岩心分析计算的渗透率更加一致。（2）在新模型的基础上，建立了测井测井流动性与实际钻探比采指标之间的相关性。与使用相邻油田的渗透率模型建立的关系相比，新模型的相关性更好。（3）对4口定向井的产能进行了预测，预测结果与钻井后的实际产量基本吻合。新模型的相关性更好。（3）对4口定向井的产能进行了预测，预测结果与钻井后的实际产量基本吻合。新模型的相关性更好。（3）对4口定向井的产能进行了预测，预测结果与钻井后的实际产量基本吻合。