聚合物低剪切井下配注器的研制及应用  

Development and application of down-hole flow regulator for polymer flooding.

作　　者：马宏伟[1] 单晶[1] 申秀丽[1] 张宏禄[1] 袁云[1] 

机构地区：[1]河南油田分公司石油工程技术研究院

出　　处：《石油机械》2005年第8期33-34,3,共2页China Petroleum Machinery

基　　金：中石化集团公司2001年科技攻关项目的部分研究内容;项目名称:改善聚合物驱开发效果技术;编号:P01045

摘　　要：为了解决聚合物井下低剪切配注问题,研制了新型聚合物配注器。该配注器阻流段采用同心双环形连续扩缩管结构,对聚合物限流阻力大、剪切率低,当流量在25～170m3/d范围时,可产生压降1.5～3.6MPa,剪切降解率小于6%;配注器出口通道设计有低剪切洗井滑阀,具有反洗关闭、正注增阻的双重功能,可以避免地层返吐物堵塞水嘴,并实现反洗井,提高分注适应性,延长分注工艺有效期。现场应用42井次114套次,工艺成功率95%,取得了良好的应用效果。A new kind of down-hole flow regulator for polymer flooding is developed to solve the problem of multi-layer separate injection at low shear rate. Provided with two concentric ring ripple pipes, the flow regulator exerts a large flow resistance on the polymer and therefore a low shear rate can be realized. When the flow rate is within 25-170 m3/d, a pressure drop of 1.5-3.6 MPa can be produced, and the shearing degradation rate of the polymer will be less than 6%. A slide valve which can be closed during back washing is fixed at the outlet of the flow regulator. The regulator has been used in 42 wells with good effect.

关 键 词：聚合物配注器 井下低剪切 配注问题 结构设计 分注适应性 分注工艺 

分 类 号：TE357.4[石油与天然气工程—油气田开发工程]