地面微地震监测技术在页岩油水平井压裂效果评价中的应用——以松页油2HF井为例

地面微地震监测是评价水平井压裂效果的有效手段.采用矩形观测系统、高灵敏度检波器深浅结合埋置、覆土耦合压实的采集技术,在2000 m之下的松页油2HF井水平段泥页岩储层中获得明显的压裂微地震信号.利用数据归一化、噪声压制、速度建模、震源定位等关键处理技术,有效提高了泥页岩储层低频信号成像精度.采用高精度反演定位解释技术,...

APPLICATION OF SURFACE MICROSEISMIC MONITORING TECHNOLOGY IN FRACTURING EFFECT EVALUATION OF SHALE OIL HORIZONTAL WELL:A Case Study of SYY-2HF Well

Surface microseismic monitoring is an effective method to evaluate the fracturing effect of horizontal well.By adopting the rectangular observation system,shallow-depth embedment and soil-covering coupling compaction acquisition techniques of high sensitivity geophones,obvious fracturing microseismic signals are obtained in shale reservoir in the horizontal interval of SYY-2HF well below 2000 m.The application of key processing technology including data normalization,noise suppression,velocity modeling and seismic source localization has effectively improved the imaging precision of low-frequency signals in shale reservoir.Through high-precision inversion positioning and interpretation technology,the paper objectively evaluates the fracturing effect of SYY-2HF well and puts forward suggestions for fracturing optimization.