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1、微地震水力压裂(实时)测绘 高确定油气藏地震,微地震测量原理,Microseismic Event,Casing,射孔井段,压裂包络范围之内的微地震事件之起源,解决办法,微地震诊断技术与压裂有关的事件的声学运动处理本技术在精度、可靠性、处理速度、设备布放等四个方面都十分成熟接收遥测连续记录和事件的探测数据处理和操作大量使用事实验证的技术,Features特点,实时地下压裂测绘裂缝方位裂缝深度裂缝的延伸范围裂缝的高度裂缝发生之时序,效益,诊断压裂中存在的问题裂隙的几何分布随时间变化裂隙的发育情况支撑剂的位置多条带评价新压裂技术重复压裂高度控制支撑剂的位置提高油气藏管理井距和布井位置的调整加密井的
2、可能性,微地震监测的野外配置,Treatment WellHydraulic Frac Well,Monitor Well,Multi-Level 3C Seismic Array,Microseisisms,High Pressure Pumping,Rock Fractures,300-1500 M,微地震成像,微地震事件发射出P和S波速度的差异性在三轴正交接收系统上被探测到,P,S,SHEAR SLIPPAGE,P(t1),S(t1),P(t2),S(t2),RECEIVER,X,Y,FracSeis Microseismic Mapping,EXAMPLE MICROSEISM,接收器
3、的布放和野外实施,FRACTURE,RECEIVERS,RESERVOIR,MICROSEISMS,Straddling ReservoirBest Viewing PositionSmallest Velocity EffectsMost Accurate HeightBest Hodograms(Directionality),Above ReservoirMinimizes Head Waves,RECEIVERS,微地震测试距离,Fenton Hill Granite(LANL)花岗岩Camborne Granite(UKDOE)花岗岩Austin Chalk(LANL)白垩岩Frio
4、 Sandstone(ARCO)砂岩North Slope Sandstone(ARCO)砂岩Barnett Shale页岩Mesaverde Sandstone砂岩Frontier Sandstone砂岩Cotton Valley Sandstone(UPR)砂岩Other Sandstones砂岩,5000 ft/1500m4500 ft/1400m2500 ft/800m1500 ft/500m3000 ft/1000m3000 ft/1000m1100 ft/400m1000 ft/350m2000 ft/700m700-1200 ft/300m,Spatial Computation
5、 of Microseismic Events,FRACMAPModel,Each point identifies location of microseismic event caused by fracture,Observation Well,TreatmentWell,500 M,Spatial Computation of Microseismic Event,Display CourtesyESG Canada Ltd.and Acoustic Mapping Consultants,Partial Display(120 280-minutes)of Frac Treatement,
