复杂结构井蒸汽吞吐影响因素及优化研究  

INFLUENCING FACTOR ANALYSIS AND OPTIMIZATION STUDY OF STEAM HUFF AND PUFF IN COMPLEX STRUCTURE WELL

作　　者：张贤松 丁美爱[3] 

机构地区：[1]中海石油研究总院,北京东城100027 [2]"海洋石油高效开发"国家重点实验室,北京东城100027 [3]中国石化勘探开发研究院,北京海淀100083

出　　处：《西南石油大学学报（自然科学版）》2011年第1期107-110,16-17,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家重大专项"海上稠油高效开发技术研究"(200701209400)

摘　　要：利用复杂结构井技术开发稠油油藏,可提高稠油油藏的动用程度,注汽开采时优势更明显,可有效增加波及范围,从而大幅度提高采收率。目前对复杂结构井产能预测模型的研究远落后于矿场实际应用,预测结果与实际生产效果出入较大,尤其是对复杂结构井注蒸汽热采,考虑多因素条件下很难求得解析解。根据某油田已实施的多口复杂结构井蒸汽吞吐实际数据,利用灰色关联方法,以初期产能作为参考序列,油层厚度、渗透率、复杂结构井长度、井距、夹角、注汽参数等作为比较序列,最终依据关联度计算公式得到不同影响因素的关联度,并对复杂结构井开发效果的影响因素及其程度进行评价,得出影响复杂结构井蒸汽吞吐效果的主控因素,并针对主控因素进行了优化研究,为稠油油藏利用复杂结构井进行蒸汽吞吐开采提供了必要的技术参考依据。Complex structure well,which increases the steam effective displacement area,can greatly enhance oil recovery by developing heavy oil reservoir.The study on flow mechanism of complex structure well is far behind the field application.It is difficult to establish the productivity prediction model and obtain analytical solution for complex structure well considering many factors.Forecasting results differ significantly from the actual production results especially for complex structure well in thermal recovery.By using gray relational approach to the initial production as a reference sequence,reservoir thickness,permeability,branch well length,well spacing,angle,injection parameters etc.are regarded as comparison sequence according to the actual data,the correlation degree and controlling factors are obtained in this paper.The main controlling factors are optimized for complex structure well of heavy oil using steam huff and puff.The research results will provide the necessary technical reference for complex structure well in thermal recovery.

关 键 词：复杂结构井 蒸汽吞吐 产能 影响因素 灰色关联 优化 

分 类 号：TE24[石油与天然气工程—油气井工程]