吐哈油田偏心分层注水管柱技术分析

TECHNOLOGICAL ANALYSES OF ECCENTRIC-PIPE STRING FOR ZONAL INJECTION IN TUHA OIL FIELD

本文通过分析吐哈油田目前偏心分注管柱技术现状,认为造成分注井配注合格率偏低的主要因素之一是分居注水管柱存在较大的缺陷,提出了克服缺陷的两种分注技术方案,即:一是采用带有双卡瓦封隔嚣的管柱;二是采用带有外力平衡结构和伸缩量补偿机构的管柱。第二套方案中设计出的"可反洗井悬挂式平衡分层注水管柱"结构合理,具有更强的可操作性,可以在吐哈油田推广应用。

By analysing the current technological situation of eccentric - pipe string for zonal injection in Tuba Oil field, We find out that one of the factors caused by lower qnalification rate in injection - allocation of the separate zone is the defect existed in pipe string for zonal injection. There are two sets of programs provided, one is pipe string with dualslip packer and another is hook - wall pipe string for reverse washing in balanced zonal injection.