The reasons for sand production include the decline of formation pressure, the clasticdeformation of rock matrix, the breakdown of sand cementing matter and the washout ofhigh speed fluid.
英
美
- 出砂的原因是:油层孔隙压力降低,砂岩骨架被压碎;孔隙内介质变化使胶结物破坏;高流速下液体冲坏砂拱等。