高压水射流射孔渗流场模型及计算  

Simulation model and calculation of seepage flow field for high pressure waterjet perforated wells

作　　者：李根生[1] 宋剑[1] 熊伟[2] 黄中伟[1] 牛继磊[3] 

机构地区：[1]中国石油大学(北京)石油天然气工程学院 [2]中国石化胜利油田采油工艺研究院 [3]中国石油大学(华东)石油工程学院

出　　处：《石油勘探与开发》2005年第6期97-100,共4页Petroleum Exploration and Development

基　　金：国家"863"计划项目(2005AA615020);国家杰出青年科学基金(50125413)

摘　　要：为计算和对比高压水射流射孔完井与裸眼完井、常规射孔完井的渗流场,在合理假设基础上,建立了井眼附近有限元渗流场模型,裸眼完井的计算结果证明了该模型的准确性。常规射孔完井污染带和压实带对油井产能有非常不利的影响;高压水射流射孔完井可以避免常规聚能弹射孔完井方式伴随的射孔压实带对油井产能的严重影响,并且可以减少钻井污染带对产能的影响;在低渗透率地层,应尽量避免采用常规聚能弹射孔而采用高压水射流射孔完井。A finite element simulation model was established, which was used to compare the seepage flow fields of open hole completion, perforation completion and high pressure waterjet perforation. The calculation in the open hole completion proved the accuracy of the model. The drilling damage zones and compacted zones of conventionally perforated wells have seriously harmful effects on the productivity. High pressure waterjet perforation can avoid the negative effects of compacted zones and decrease the the harmful effects of the drilling damage zones. At the low permeability formations, the high pressure water jet perforation should be implemented for a higher productivity.

关 键 词：高压水射流 水力射孔 渗流场 污染带 有限元模型 

分 类 号：TE257[石油与天然气工程—油气井工程]