DB油田生产动态预测与举升方式优选

DB油田是一个高密度、中低粘度、高饱和压力油藏，有灰岩和砂岩2套不同性质的开发层系。首先从分析油藏特性出发，提供了一种计算不同含水时期、不同结构油井的采液指数的方法；然后采用节点系统分析方法对自喷生产动态进行了预测，对油层的自喷能力进行了评价，并对生产管柱进行了选择；最后对人工举升方式进行了优选。从而形成了一套集油井产能计算、井筒管柱选择与举升方式优选于一体，并适用于直井、斜井和水平井的油井生产系统设计方法，为高效开发DB油田提供了理论指导。

Prediction of Producing Performance and Optimization of Artificial Lifting Way in DB Oilfield

DB oilfield is an uncompartmentalized oilfield with high density,medium-low viscosity and high saturation pressure.There are two strata with different characteristics (sandstone and limestone).In this paper,firstly a method is provided to calculate the production index in different water cut and well profile according to the reservoir characteristic.Secondly flowing production performance is predicted by nodal system analysis method, the natural flow ability of oil formation is evaluated,and the production string is choosed.Finally artificial lifting way is optimized.Based on this method,a system design approach is presented including productivity calculation,the determination of string and the optimization of artificial lifting way,which can be applied feasibly in vertical,directional and horizontal well.This approach helps to develop DB oilfield effectively.