铁山21井单管油、套管分层开采完井工艺技术

WELL COMPLETION TECHNIQUES FOR TUBING AND CASING SEPARATE ZONE PRODUCTION OF WELL 21 TIESHAN

结合铁山21井分层开采工作,介绍一种利用插管封隔器及相应井下工具,封隔上、下两个生产层的分层开采工艺技术。其特点是,将油管和油套环空(套管)各作为一条采气通道,达到了分层开采两层的目的。该工艺具有施工简单,投资少等优点,适用于在H_2S含量较低的井上推广使用。

Taking the separate zone production of well 21 Tieshan as an example,a separate zone production technique of using bayonet-tube packer and the appropriate downhole tool to separate the upper producing zone form the lower is introduced. The characteristic of the technique lies in taking tubing and casing annular space as the production passages respectively to achieve separate zone production. The present technique,with the merits of simple operation and small investment,is suitable for the wells with low H_2S content.