海上干扰试井数值模拟设计及方案优化

南海东部某油田储层渗透性较好，但各井产水量存在差异，井间干扰严重。 针对该种现象，以渗流力学理论为基础，依据现有地质资料进行干扰试井数值模拟，并设计施工方案，以查明井间连通性及干扰压力大小。与常规方法相比，干扰试井数值模拟方法可很好地实现近井地带精细网格和远井地带粗化网格相结合，从而达到利用较少的网格真实刻画地质特征的目的，同时也可很好地模拟油水两相渗流情况，对实际施工测试有良好的指导意义。实际干扰试井施工所搜集到的干扰压力数据与最初模拟设计方案相符，从而验证了该设计方案的正确性。

Interference well test with numerical simulation design and program optimization at sea

The reservoir of an oilfield located in the eastern South China Sea is characterized by good reservoir permeability, different water content in each well and serious interference between production wells. Aiming at this phenomenon, based on seepage flow mechanics and existing geological data, this paper carried out interference well test numerical simulation and designed construction program to ascertain interwell connectivity and find out interference pressure. Compared with conventional methods, interference well test numerical simulation can realize the combination of fine grid blocks in near bore zones and coarse grid blocks in far bore zones, and then achieved the purpose of describing geological characteristics with least grid blocks and simulated oil and water seepage of multiphase flow at the same time, which has favorable guidance for practical construction tests. The actual interference pressure date collected from optimized interference well test construction matched with the initial designing project, which validates the correctness of this design scheme.