疏松砂岩储层临界生产压差确定方法

Critical Production Pressure Determining Method for Unconsolidated Sandstone Reservoir

出砂问题是疏松砂岩油藏开采无法回避的问题,岩石骨架出砂具有连续性和破坏性大的特点,合理井底流压管理是生产过程中避免地层大量出砂的一项重要手段。针对岩石力学参数获取难度大的问题,利用测井资料结合经验公式,获得油田储层力学参数,根据剪切破坏机理计算临界出砂井底流压,计算结果与实际出砂井流压数据吻合较好。

The unconsolidated sandstone is an unavoidable problem in sand mining, skeleton rock sand continuity, and destruction of large features. Reasonable bottomhole pressure management is the production process to avoid the formation of a large number of important means of sand. Rock mechanics parameters for the difficulty obtain a big problem, combined with the empirical formula by logging data obtained by Oilfield mechanical parameters, calcu- lated according to the critical shear failure mechanism of sand flowing bottomhole pressure. The calculation results with the actual sand wells flowing pressure data consistency are good.