摘要
针对渤南中深层Y管油井防砂段中心管易遇卡的情况,以脱手定位密封以下防砂段遇卡中心管,检泵后回接脱手中心管为思路,从而实现油井的快速复产.该工艺研制的安全接头可在防砂段中心管遇卡后进行主动脱手,节省切割打捞工序;研制的补偿式回接工具可有效回接脱手工具及油管切割点,并能满足钢丝、电缆作业需求;研制的防卡换向导引工具,可以实现井内工具端部的旋转和换向.目前该工艺已在渤南垦利10-1、渤中35-2等油田多井次应用,效果良好.
Abstract
With the development of the offshore oil industry,the proportion of ultra deep wells,extended reach wells,and horizontal wells increases year by year.String sticking occurs more frequently due to high well temperature and pressure,significant string load,complex wellbore trajectories,etc.In this paper,to solve the problem of frequent sticking of central string of sand control section of the deep Y-tube oil well in Bonan,the stuck central string below the seal was located by a releasing tool first and then tied back by the tool after pump check,resulting in rapid work resumption of oil wells.The safety joint developed in this process can be actively released after central string sticking,thus avoiding cutting and fishing processes.The developed compensative tie-back tool can effectively tie back the release tool and oil tube cutting point and meet the needs of steel wire and cable operations.The developed anti-sticking directional guide tool can rotate and reverse the tool ends in the wells.At present,this process has been applied many times in Bonan Kenli 10-1 well,Bozhong 35-2 well,etc.,with good results.
维普
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