【摘要】 江苏油田为了促进时移地震技术在苏北盆地的应用,以高集地区作为可行性研究试点。高集地区的高6块经过近20年的开发,进入了高含水期,含水率达到了80.8%,目前采收率为27.98%,显示该块还具有较大的勘探潜力,但剩余油分布认识困难,影响了研究区的开发。江苏油田缺少严格的时移地震资料和相应的技术理论,针对该问题,形成了"二次处理、一次正演、二次预测"的思路,并形成了相应的关键技术。该技术在高6块的应用结果表明,高6块存在一大一小2个含油饱和度高值带。研究成果与数值模拟的剩余油富集区域符合度较高,说明时移地震技术在高集油田具有可行性。更多还原

【Abstract】 Gaoji Area of Subei Basin was selected to be an experimental area of feasibility study for promoting the application of time-lapse seismic technology of Jiangsu Oilfield.The Block Gao 6 of Gaoji Area has already been developed at the higher water-cut stage for nearly 20 years,the current water cut and recovery ratio were at 80.8% and 27.98% respectively,it presented higher potential for exploration in the block,but it was difficult for recognizing the remaining oil,it influenced the oil development in the studied area.Jiangsu Oilfield was in short of effective time-lapse seismic data and corresponding time-lapse seismic theory.To solve the problem,the research processing was put forward,the idea included the secondary process,first forward and secondary prediction,and corresponding key techniques were established.The technique is used in Block Gao 6,the results show that there are 2 higher oil-bearing saturation zones to be discovered in Block Gao 6,one is bigger and the other is smaller.The result is highly consistent with that of residual oil enriched area,it shows that the time-lapse seismic technology is feasible in Gaoji Oilfield.更多还原