马2断块油藏数值模拟及开发调整方案设计

马 2断块油藏开发历史长 ,已进入中高含水期 ,存在着水驱控制程度低 ,层间及层内矛盾突出 ,低渗透部位的剩余油难以开发等问题。为了有效控制产量递减和提高采收率 ,利用数值模拟技术对开发过程中存在的主要问题进行综合分析研究 ,对各种可行的开发调整方案进行预测和优选。研究表明 ,对马 2断块现有的开发状况进行调整是必要和有效的。在马 2断块油藏开发中后期 ,及时调整注采比及采油速度 ,不仅可以提高开发效果 ,而且能提高最终采收率 ,达到稳油控水的目的

Numerical Simulation and Development Adjustment Scheme Design of Ma-2 Fault Block Oil Reservoir

Subjected to a long term development, Ma 2 fault block oil reservoir has grown into a high water cut stage. Many problems are arising in Ma 2 fault blockoil reservoir at the stage: These are the low level of water control, the sharp conflict visible in or between layers, and the difficulty in developing remaining oil of low permeable zone. To control the progressive reduction of production and to raise the recovery ratio, we have, comprehensively, analyzed the major problems by means of the numerical simulation, and experimented with all the practical adjustment schemes and selected the best based on the economic evaluation. The study suggests it is necessary and effective to adjust the current development situation of Ma 2 fault block oil reservoir. Through timely adjustment in injection recovery and oil recovery rate in the middle and late periods of development of Ma 2 fault block oil reservoir, not only could high efficiency of development be fulfilled, but ultimate recovery ratio could also be raised. And finally we can achieve the goal of oil collection stabilizing and water controlling.