低渗透油藏垂直裂缝井产能评价Well production evaluation of vertical fracture in low permeable reservoir
李生,李霞,曾志林,吴春艳
LI Sheng; LI Xia;ZENG Zhi-lin;WU Chun-yan(No.9 Oil Production Company of Daqing Oilfield Company Ltd.;
摘要(Abstract):
通过近似和修正方法得出了低渗透垂直裂缝油藏的产能公式。考虑到启动压力梯度、裂缝长度以及地层的污染状况, 通过修正方法得到了具有启动压力梯度的垂直裂缝油藏生产井的产能公式, 并给出了相应的工程产能公式。分析表明, 当启动压力梯度较小时, 对产量的影响很小, 随着启动压力梯度的增大, 影响增强, 产量下降。
This paper plots out the productivity formula for vertical fractures in low permeable reservoirs using approximation and correction method. Considering the starting pressure gradient,fracture length and formation pollution,it works out a productivity formula of the producing well in vertical fractured reservoir with a starting pressure gradient,and gives a corresponding engineering productivity formula.The analysis shows that low starting pressure gradient has little effect on the production.With the increase of starting pressure gradient,it has more effect and the production decreases.
关键词(KeyWords):
低渗透油藏;启动压力梯度;产能公式;裂缝长度
low permeable reservoir;starting pressure gradient;productivity formula;fracture length
基金项目(Foundation):
作者(Authors):
李生,李霞,曾志林,吴春艳
LI Sheng; LI Xia;ZENG Zhi-lin;WU Chun-yan(No.9 Oil Production Company of Daqing Oilfield Company Ltd.;
- 低渗透油藏
- 启动压力梯度
- 产能公式
- 裂缝长度
low permeable reservoir - starting pressure gradient
- productivity formula
- fracture length
- 李生
- 李霞
- 曾志林
- 吴春艳
LI Sheng - LI Xia
- ZENG Zhi-lin
- WU Chun-yan(No.9 Oil Production Company of Daqing Oilfield Company Ltd.
- 李生
- 李霞
- 曾志林
- 吴春艳
LI Sheng - LI Xia
- ZENG Zhi-lin
- WU Chun-yan(No.9 Oil Production Company of Daqing Oilfield Company Ltd.