A pressure drop model of post-fracturing shut-in considering the effect of fracturing-fluid imbibition and oil replacement
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A pressure drop model of post-fracturing shut-in considering the effect of fracturing-fluid imbibition and oil replacement |
| WANG Fei,RUAN Yingqi,CHEN Qiaoyun,ZHANG Shicheng |
| Fig. 5. Simulation results of bottom hole pressure drop and derivative log-log curves. ① Wellbore after-flow-dominated stage; ②Inter-fracture channeling-dominated stage; ③ Fracture network leak-off-dominated stage; ④Fracture network storage stage; ⑤ Matrix imbibition and oil replacement stage; ⑥ Steady increase stage of oil-water displacement efficiency; ⑦ Oil-water displacement efficiency decline stage; ⑧ Oil-water displacement equilibrium stage. |
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