MDT测压拟合方法及其在油藏开发调整中的应用

深水浊积水道沉积储层具有多期次水道垂向相互叠置的特点，砂体间连通关系极其复杂，各层砂体储量动用程度分析难度大，加剧了油藏历史拟合的不确定性及多解性，给剩余油分布规律及开发方案调整研究带来极大挑战。为此，展开了后续井MDT测压拟合指导深水浊积水道沉积储层油藏模型校正新方法的研究，其主要思路为利用后续井MDT测压资料作为拟合参数，通过拟合某一时刻下模型中各层压力和对应时间同一位置处新钻井MDT测压数据，不断修正模型中砂体的横向及纵向连通性，使模型砂体叠置关系及连通关系逐渐接近油藏实际，再结合常规开发指标拟合，最终完成剩余油分布规律研究以及开发方案调整研究。实际应用效果表明，后续井MDT测压拟合方法是一种拟合多期水道砂体连通关系的有效方法，显著降低了该类型油藏历史拟合的不确定性，为油田开发方案调整奠定了良好基础。

MDT Pressure Measurement History Match Method and Its Application in Adjustment of Reservoir Recovery

It is difficult to analyze the degree of utilization of each layer of sand stored in deep water turbid water channels. This aggravates the uncertainty and multi-solution characteristics of reservoir history match fitting and brings great challenges to the study of remaining oil distribution and to the adjustment of the recovery plan. In this paper, a new method is presented for the correction of the deep-water turbid water channel sedimentary reservoir model, based on the history match of MDT pressure measurements of later wells. The main idea is to use later well MDT pressure measurement data as fitting parameters. Through the fitting of newly drilled well MDT pressure measurement data, at the same location and corresponding time and pressure of each layer at a certain time in the model, the horizontal and vertical connectivity of the sand bodies in the model are continuously corrected. Consequently, the superposition and connectivity of the sand bodies in the model gradually approximate those of the actual reservoir. Further, combined with conventional recovery index fitting, the research of the remaining oil distribution trend and the study of the recovery program adjustment are finally completed. Practical application results show that the history match method of MDT pressure measurement on later wells is an effective method to fit the connectivity of the sand body of multi-stage channels.