辛11水驱断块层间轮转注采水动力学挖潜措施研究

为了研究辛11断块区层间轮转深度挖潜的措施效果,针对该区块含水率高、产量递减速度快的问题,选取辛11-46断块为研究对象,建立了该区块的地质模型,经过生产历史拟合,明确了该区块剩余油主要集中在油层顶部及靠近断层一线处,非主流线上剩余油饱和度较高.结合油藏工程方法,模拟优化了轮转方式、注采轮转周期、采液量及能量恢复时间的...

Study on hydraulic dynamic potential digging measures of interlayer rotationinjection and production in Xin 11 water driving fault block

Based on the hydrodynamic deep tapping technology adjusted by the oil and water well production system,in recent years,considerable mining results have been achieved in the water flooding old oilfield.Taking the Xin 11 fault block as an example,the reservoir numerical simulation method was used to establish the geological model of the Xin 1146 fault block and the production history fitting work.Clarifying the distribution rules and characteristics of the remaining oil,comparing the effect of the effect of tapping depth between layers,optimizing the hydrodynamic parameters such as rotation mode and injection-rotation cycle,predicting the development effect after 15 years,found that the water cut decreases from 99.8%to 99.%,the recovery degree increases from 32.1%to 32.8%,and the oil accumulation increased 1.4×10⁴ t;the results show that the alternating water injection pressure in the layer can guide the water flooding pressure fluctuation in the layer,promote the water drive flow line disturbance,and expand the water flooding range.The large water injection coefficient makes the injected water drive more into the remaining oil enrichment area,and at the same time controls the speed of the water in the injection layer,thereby improving the development effect of the area.