论文部分内容阅读
对靖安油田长6、长2油层砂岩模型的水驱油实验表明，长6、长2油层虽然在物性上差异较大，但它们的最终驱油效率相差不大；实验还表明无水期结束之后的继续水驱油，长6油层的驱油效率有较大提高（25．79％），而长2油层的驱油效率则提高较小（4．32％）。影响靖安油田长6、长2油层驱油效率的主要因素是储层的孔隙结构、润湿性和注入水加压方式。
Water flooding experiments on sandstone models of Chang 6 and Chang 2 reservoirs in Jing’an Oilfield show that although the physical properties of Chang 6 and Chang 2 reservoirs are different greatly, their final displacement efficiencies are similar to each other. Experiments also show that the water-free period After the end of the continuation of water flooding, the oil displacement efficiency of Chang 6 oil layer has been greatly enhanced (25.79%), while the oil displacement efficiency of Chang 2 oil layer increased slightly (4.32%). The main factors affecting the oil displacement efficiency of Chang 6 and Chang 2 reservoirs in Jing’an Oilfield are the pore structure, wettability and injection pressure of reservoir.