西安石油大学学报（自然科学版）2012，Vol.27Issue(4)：46-49,4.
考虑井筒压降的底水油藏水平井见水时间研究
Study on water breakthrough time of horizontal wells in bottom water reservoir with considering pressure drop in wellbore
摘要
Abstract
In order to understand the influence of the liquid flow within horizontal wells in bottom water reservoir on the breakthrough time,the relationships between the breakthrough time and liquid output and horizontal wellbore length are studied by coupling seepage flow in reservoir with pipe flow in horizontal wellbore under considering pressure drop along wellbore. It is shown that: compared with no considering the pressure drop along the wellbore, the water breakthrough time brings forward, and the fluid flowing into the horizontal well wellbore from reservoir increases gradually from the tip end to the heeling end of the horizontal wellbore. The increase of oil well production makes bottom water breakthrough earlier. The significant error would be produced in the prediction of bottom water breakthrough time without considering the pressure drop in wellbore when the output of horizontal well exceeds 20 mVd,and the greater the output is,the greater the prediction error is. The water breakthrough time would delay with the increase of the horizontal wellbore length. When the horizontal wellbore length is less than 400 m,the influence of the pressure drop in wellbore on the water breakthrough time can be ignored. When the horizontal wellbore length is more than 400 m,the influence becomes obvious. The delaying rate of the water breakthrough time is reducing with the increase of wellbore length. The water breakthrough time will not change with the increase of the wellbore length when the wellbore length is over 2 000 m. Therefore, the influence of pressure drop should be taken into consideration in the development decision-making of bottom water reservoir.关键词
底水油藏/水平井/见水时间/井筒压降/产量/水平井长度Key words
bottom water reservoir/horizontal well/water breakthrough time/pressure drop in wellbore/oil well output/horizontal wellbore length分类
能源科技引用本文复制引用
李立峰,岳湘安,张立娟..考虑井筒压降的底水油藏水平井见水时间研究[J].西安石油大学学报（自然科学版）,2012,27(4):46-49,4.基金项目
国家科技重大专项"复杂油气田地质与提高采收率技术"(编号:2011ZX05009-004) （编号:2011ZX05009-004）
国家"973"重点基础研究发展计划"二氧化碳减排、储存和资源化利用的基础研究"(编号:2011CB707305)资助 （编号:2011CB707305）
