论文部分内容阅读
针对东海平湖油气田八角亭构造H4b油藏砂体厚度薄(0.5m~3.5m左右)、物性差、叠前反演对于厚度在2m以下储层无法有效追踪,又缺乏完善的基础资料来落实储层分布的现状,借助于油藏数值模拟手段,通过历史拟合,修正模型、落实砂体展布。通过建立概念模型开展压力动态影响因素研究发现,油井的静压动态变化规律是由油井的生产制度(采油速度)、控制储量的大小及分布、油藏的物性非均质性,水体的大小及传导性共同影响形成的。利用研究成果,通过综合调整物性非均质性、储量、水体等影响参数使压力得到高精度拟合,并落实井区储量,深化地质认识。为油藏的后期开发调整、剩余油挖潜、产量预测提供可靠的依据。
In view of the low thickness (about 0.5m ~ 3.5m) of the sand body of the Bajiaojeong H4b reservoir in the Pinghu oil and gas field in the East China Sea, poor physical properties, the prestack inversion can not effectively track the reservoir below 2m in thickness, and lack of sound basic data to implement the reservoir Distribution of the status quo, with the help of reservoir numerical simulation means, through historical fit, modify the model, the implementation of sand body distribution. Through the establishment of a conceptual model to study the dynamic factors of pressure, it is found that the dynamic variation law of the hydrostatic pressure is determined by the well production system (oil recovery rate), the size and distribution of controlled reserves, reservoir physical heterogeneity, water body size Consequential influence. Using the research results, the pressure can be fitted with high precision by comprehensively adjusting the influence of physical heterogeneity, reserves and water, and to implement well reserves and deepen geological understanding. For the late development and adjustment of reservoirs, residual oil tapping potential, yield forecast to provide a reliable basis.