摘要
S断块为一中低孔、中低渗、深层稠油油藏,蒸汽吞吐先导试验表明,该断块适于应用蒸汽吞吐技术开采。应用数值模拟方法对蒸汽吞吐开发方式、注采工艺参数进行了优化,结果表明,直井与水平井组合蒸汽吞吐+蒸汽驱技术较其他方式开发效果好,具体优化参数为:水平井段长为300 m,注采井排距、直井井距均为100 m,井底蒸汽干度须大于40%,注汽速度在360 m3/d左右,直井、水平井一周期注汽强度为60 t/m、10 t/m,注汽量为1 800 m3,3 000 m3,注汽压力在18 MPa以上,焖井时间6天左右。
The S-block is a low-middle porosity and low-middle permeability reservoir.The steam stimulation pilot test shows that the steam stimulation technology is suitable for S-block.By using the numerical simulation method to optimize the steam huff and puff development mode and injection-production parameters,the study results show the development effect with the combination of vertical and horizontal wells is the best,the length of horizontal interval is 300 m,and the injection-production wells row spacing and vertical well spacing is both 100 m.The downhole steam dryness must be more than 40%,the steam injection rate is about 360 m3/d,vertical and horizontal wells' cyclic injection intensity is 60 t/m,10 t/m,the injection volume is 1 800 m3,3000 m3,the steam injection pressure is above 18 MPa,and the soak time is about 6 days.The study can provide reliable basis for the similar reservoirs in the optimization of development mode and injection-production parameters.
出处
《石油地质与工程》
CAS
2013年第3期120-123,150,共4页
Petroleum Geology and Engineering
基金
中国石化"十条龙"重点科研攻关项目"超深层稠油降粘开采关键技术"(210003)
关键词
稠油油藏
直井水平井组合
蒸汽吞吐
参数优化
heavy oil reservoir
horizontal and vertical combination
steam stimulation
parameters optimization
