过环空电动开关下井仪

Through-annulus electric on-off logging tools

以往要改变抽油机井的堵水层位 ,需要作业改动管柱 ,耗资大。为了实现抽油机井堵水或分层开采层位的任意调整 ,文章介绍一种外径 2 5mm ,能通过抽油机井油套环形空间起下的电动开关仪。它可在井下精确定深 ,到达预定位置张开对接爪 ,上提电缆实现打开或关闭被封隔的层位。从而实现一次性下入生产管柱后 ,不停产、不动生产管柱 ,满足抽油机井进行找水、任意堵水及调层生产的需要。

When changing the water shutoff zone of rod pumped well previously,it needs to modify production string. It is a costly operation. In order to realize arbitrary adjustment of water shutoff zone or separate production zone of rod pumped well,the paper introduces an electric on off logging tool. Its diameter is 25 mm,and it can run through the annulus between tubing and casing of rod pumped well. It can be located downhole accurately. The logging tool opens its butt claw when it gets to the desired depth,then pulls wireline to open or close the separated zone. Thus after running the production string,it does not need to shut in the rod pumped well and modify the production string,the logging tool can meet the requirement of water detection and arbitrary adjustment of water shutoff zone or separate production zone of rod pumped well.