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第195章 实习后期(2 / 2)

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3)检查放气螺丝是否完好;

4)检查上下连接丝扣是否完好。

(2)安装:

1)密封胶带从里往外顺时针缠,压住1/3-2/3处;

2)将连接处缠上密封胶带的胶皮闸门有放气螺丝的一端朝上,从光杆上穿过,安装在采油树上,用管钳上紧,安装好的胶皮闸门的方向与采油树闸门方向一致;

3)检查密封效果:关闭胶皮闸门,用管钳带紧,如果光杆居中,则密封性能良好;

(3)拆卸:

1)打开胶皮闸门;

2)拆卸胶皮闸门;

3)清理井口;

4)逆时针搓下密封胶带;

5)摆放工具,清理现场。

3.连接洗压井管线

1)配件:①油管短节;②油管接箍,油管丝扣;③单流阀:安装在进口闸门、起节流、防止井内液体流出的作用。;④由壬:起快速连接的作用,成对使用,水从母扣由壬流向公扣由壬。⑤活动弯头:改变方向的配件,可以旋转。;⑥死弯头:连在出口。改变水流方向。

2)反循环洗井管线的配件的连接顺序:单流阀——公扣由壬——油管接箍——n根油管——母扣由壬——活动弯头——公扣由壬——单流阀——套管闸门——井口——油管闸门——母扣由壬——活动弯头——n根油管——固定弯头

4.抽油机热洗操作

抽油机井热洗的操作分三步:替液阶段,化排蜡阶段,巩固阶段。

(1)替液:开直通阀关掺水阀。用高温水替掉中转站到剂量间,剂量间到井口管线中的低温水和死水,大约30分钟,排量20m3/h。当井口温度达到70℃时,打开套管热洗阀,缓慢关直通阀,将热水导入环形空间,经过抽油泵排掉井筒内的凉水。

(2)化排蜡阶段:在替掉环形空间的井液过程,经过油管壁的热传递使油管内的一部分蜡开始融化,当井口回油温度达到60℃进入化排蜡阶段,此阶段用时大约60分钟,排量15m3/h。巩固阶段:经过一定时间的化排蜡阶段以后,测量电流明显下降,直到电流达到平稳,则热洗结束,此阶段用时90分钟,排量20m3/h,结束后关闭热洗阀打开掺水阀。

(3)热洗的质量要求:①油井出口回油温度不低于60℃,并稳定40分钟以上。②电动机的电流恢复到上次洗通时或正常生产时的工作电流。③洗井结束后套压有灵敏的反应。④示功图正常。⑤产油量恢复到原来生产水平,且波动不超过10%。⑥热洗时不允许停抽,停抽必先停洗井。⑦出现蜡卡紧急处理,加大排量热洗。⑧热洗完毕,关热洗阀开掺水阀,并将热洗情况填入记录表和班报表。

(4)热洗步骤:

1)准备工作:穿戴好劳动保护用品。准备450mm管钳一把。钳形电流表一块。笔和专用记录本。

2)操作步骤:检查井口流程情况,记录油压,套压数值,测量抽油机上下冲程电流。如果套压较高,先放套管气,使套管压低于热洗压力0.3Mpa以上。

3)倒热洗流程:打开旁通阀,打通地面循环。关闭井口掺水阀,打开套管情系井阀门,缓慢关闭旁通阀,确定不憋压后,关闭旁通阀门。观察油压,套压变化,以温度变化判断是否洗通

4)调整热洗参数、即调整排量,热洗温度及热洗时间。

5)洗井结束后,测量抽油机上下冲程电流,初步判断洗井质量,

6)倒回正常生产流程。

7)记录油压,套压。

注:我们老师说抽油机井的维护工作都是在日常巡检发现问题才弄的,如果及时就维护的容易,如果不及时,那有可能就会面临井下作业的工作。说白了就是把工作做在前面,那么就能够让生产稳步推进,但是如果懒惰、偷奸耍滑,抽油机井是不会撒谎的,早晚会出事儿。我听了,这和我们的人生何其相似啊!

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