Prediction and Decision-making Method of Fracture Filling Pressure in Offshore Reef Limestone Reservoir
The fractured biohermal limestone reservoir has internal fault and fracture development,and the bottom water is channeled along the fracture at high speed.The remaining oil in the matrix is difficult to recover due to the influence of high water cut in the process of oilfield development.At present,the technology measures of water plugging process in crack of water-controlled particle filling are widely used.In the process of water-controlled particle filling,the determination of filling pressure is related to the success or failure of filling construction and affected the development effect of oil well.In this paper,a method for predicting the filling pressure of reef limestone reservoir fractures is established by means of theoretical formula and field squeeze test.The application results show that the predicted results are basically consistent with the engineering data in the construction process,which provides technical support for water-controlled particle filling in fractured reef limestone reservoirs.
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