底水油藏水平井水淹动态和水淹模式研究

不同水平井的水淹动态特征存在显着差异,而油藏类型、储层物性、流体性质、水平段长度、水平段位置和开发方式等因素都会对水平井水淹动态产生重要影响。以塔里木油田TZ402CⅢ油组水平井为例,根据其生产动态和历史拟合数值模拟,分析了水平井水淹动态特征差异及其影响因素,提出了塔里木油田底水油藏水平井的3种水淹模式,即线状见水整体水淹模式、点状见水整体水淹模式和点状见水局部水淹模式。可为水平井新井设计、完井方式选择、后期措施工艺选井等提供参考依据。

Waterflooding performance and pattern in horizontal well with bottom water reservoir

The waterflooding performance in different horizontal wells has significant difference.There are many affecting factors for waterflooding performance.On the basis of the production data of horizontal wells in bottom water reservoir in TZ402CⅢformation of Tarim Oilfield and numerical simulation for production history matching,the waterflooding performance of horizontal well and its influencing factors were discussed.The waterflooding patterns of horizontal wells in bottom water reservoir of Tarim Oilfield were proposed,including linearbreakthrough waterflooding in the whole horizontal section, punctiform breakthrough waterflooding in the whole horizontal section,and punctiform breakthrough waterflooding in the local horizontal section.This classification would be useful to qualitatively design of horizontal well,selection of the completion method and treatment methodology of horizontal wells in late period.