Five fine machining junction surfacecasing, mounting holes are set aside.
五个精机加工连接面箱体，预留安装孔。
2
Prior to setting surfacecasing, the cellar also takes mud returns from the well, which are pumped back to the surface mud equipment.
在下入表层套管且注水泥之前，方井同样接受从井眼内返出的、必须被泵回到地表泥浆设备中的泥浆。
3
This paper presents the design of surfacecasing drilling in Shengli Oilfield, as well as development of main tools and the field application in Well Kendong-341.