On High Pressure Squeeze Pack Numerical Simulation of Unconsolidated Sandstone Based on Discrete Element

摘要

Sand inflow is one of the problems in unconsolidated sandstone oil reservoir recovery. The most frequently applied sand-control method is high-pressure gravel squeeze packing sand control technology. But incorrect knowledge of stratum shapes under high-pressure squeeze packing leads to unreasonable technology and implement parameters. This thesis, based on the discrete element theory and by means of two-dimension grain flow simulation software PFC2D, considers three oil wells with unconsolidated sandstone in terms of their cementing strengths. The simulation result shows that strata with diverse cementing strengths vary remarkably when high-pressure squeeze pack is asserted. Established calculation pattern might lead to sizable deviation.