泽古14井大井径裸眼段分层试油工艺

Selected Layer Test to Zegu14 Well of Big Diameter of Bore-hole Section

华北油田泽古14井在试油测试过程中,由于裸眼目的层段井径异常大且不规则,致使采用MFE跨隔测试、膨胀式测试均未能实现分层测试,为此,设计采用了较高膨胀率的扩张式封隔器、特殊滑套连通工具配合连续油管、注氮排液等工艺,成功完成了试油工作,其工艺对今后类似施工有一定的借鉴作用。

During test process to Zegu14 well of Huabei oilfield,because of being abnormally large and irregular of well diameter at target bore hole section,straddle test of MFE and expansive test can not realize selected layer test. For this reason,the expansion packer with a high expansion rate,the design of special sleeve connected tools with the coiled tubing and nitrogen injection liquid discharge process are designed and a production test work is successfully completed which provides a reference function for later similar projects.