摘要
为了提高致密油藏水平井开发储量动用程度,运用油藏数值模拟方法对水平井分段压裂集成开采的开发效果进行了对比分析,结合现场实际地质模型进行开发效果预测。研究表明:采用水平井分段压裂集成开采方法,第一生产阶段日产油量低于常规开采(全井段压裂)的,但第二生产阶段日产油量高达24t,是常规开采(全井段压裂)的2.5倍,共增油2477t。应用实际地质模型模拟20年,可增大油藏开发中压力波及范围,累计增油963t。研究结果可为致密油藏水平井开采提供理论支持。
In order to enhance oil recovery of horizontal well exploitation in tight reservoir,reservoir numerical simulation is used with the production of horizontal well multistage fracturing integrated exploitation for tight reservoir as a comparative analysis of production levels of multistage liquid production combined with the actual field model to forecast the development efficiency.The study results show that oil production rate of integrated fracturing is lower than that of conventional production(whole well fracturing)in the first stage of production in the theoretical streamline model after 15 years,but in the second stage,oil production rate is as high as 24t,which is 2.5 times of that of whole well fracturing with 2477t oil production increased in total oil.This method has been used to simulate 20 years with actual geological model,which can greatly increase the pressure spread range of horizontal wells,with 963t oil production increased in total oil.Results from this study can provide theoretical support for horizontal well exploitation in tight reservoir.
作者
朱争
孙兵华
尹虎
宋珈萱
Zhu Zheng;Sun Binghua;Yin Hu;Song Jiaxuan(Research Institution of Shaanxi Yanchang Petroleum (Group) Co.,Ltd.,Xi'an,Shaanxi 710075,China;Yanchang Oil Field Co.,Ltd.,Fu Country Oil Factory,Yan'an,Shaanxi 727500,China)
出处
《非常规油气》
2019年第4期76-80,93,共6页
Unconventional Oil & Gas
基金
国家“973”计划“致密油高效开发油藏工程理论与方法研究”(2015CB250905)资助
关键词
致密油藏
水平井
分段压裂
集成开采
油藏数值模拟
tight reservoir
horizontal well
multistage fracturing
integrated exploitation
reservoir numerical simulation
