石油钻采工艺Issue(6)：94-96,3.DOI:10.13639/j.odpt.2014.06.023
易起式水平井均匀注汽管柱的研制与应用
Development and application of easy-to-retrieve even steam injection string in horizontal wells
摘要
Abstract
The even steam injection string for horizontal well can realize even steaming in long horizontal section of horizontal well for thermal production heavy oil and improve steam injection quality. However, compared with the often usedØ73 mm tubing, the conventional even steam injection string is larger in outside diameter, so there are a number ofvariable diameter on the whole string and hence the string is hard to retrieve; in addition, the steam distribution valve is directly opposite the screen tube, so there exists the risk of screen washout while stream injection. For this reason, an easy-to-retrieve, anti-sand burial even steam injection string for horizontal well is developed, which is composed of ball-like safety release joint, small diameter lateral steam distribution valve and small diameter check valve, etc. The steam comes out of distribution valve on side oriifces, so avoiding the risk of screen washout;the outside diameter of the whole string is small without obvious diameter varieties, which reduces the risk of being unable to retrieve the string due to sand burial. The string is equipped with safe connections, so when the string is buried, the release can be realized to retrieve the upper tubing and then the lower tubing shall be ifshed. This technology enjoys a favorable prospect and promotional value in heavy oil horizontal wells with severe sand production and screen completion.关键词
水平井/均匀注汽/筛管完井/小直径Key words
horizontal well/even steam injection/screen completion/small diameter分类
能源科技引用本文复制引用
胡英才,刘若虚,李家明,苗玉礼,马海..易起式水平井均匀注汽管柱的研制与应用[J].石油钻采工艺,2014,(6):94-96,3.基金项目
中石化股份公司科研项目“春光油田稠油热采工艺关键技术研究”（编号P13122）。 （）
