港东一区井震联合剩余油富集规律研究

Study on remaining oil concentration rule by well-to-seismic integration method at Gangdong1 area

（1.中国石油勘探开发研究院，北京100083；2.承德石油高等技术专科学校，河北承德067000）

Exploration & Production Research Institute, CNPC, Beijing 100083, China

高含水油田剩余油呈现“整体高度分散、局部相对富集”的格局，认识井间储层与剩余油的分布规律，是处于开发后期油田增储上产的关键。针对港东一区一断块高含水油层，开展了以地震分频处理技术、井震精细标定和地震分频反演技术为特色的油藏地球物理技术研究；基于地震约束建立的储层地质模型，采用精细油藏数值模拟技术对研究区的剩余油富集区进行了预测；根据预测结果，对剩余油富集圈闭，采取补孔、堵层、优化注采井网等措施，获得了明显的增产效果。

The remaining oil at high water-cut stage distributes with the characteristic “overall highly scattered, local relatively enriched”. Recognition on the distribution rule of remaining oil and inter-well layers is the key to increase reserve and production for the oilfield at the later stage. In view of the production needs, the seismic data frequency-division processing, fine well-to-seismic calibration and seismic frequency-division inversion were applied on the reservoir with high water cut at Gangdong No.1fault block. Based on the reservoir geological model constrained by seismic data, the potential regions of remaining oil are predicted by fine reservoir numerical simulation technique. Based on the prediction results, several treatments, such as re-perforation, plugging and well pattern optimization are applied to the concentrated traps of remaining oil, and the field production is significantly increased.