Check the wellbore height and well height respectively
The height of the wellbore is the height of the wellbore to the wellhead and the lower part of the wellhead. The height of the wellbore is the height of the wellbore to the wellhead. height.
Manhole: connection (manhole) Sewage sewer and drainage pipes Maintenance workers Check through piping to prevent clogging of the structure. Precipitation and manholes are generally located at the intersection of the station's ground drains, drains, sewers or elevation changes that are prone to siltation, obstructions where it is convenient for dredging and a sedimentation draining well.
The height of the wellbore is the height of the wellbore to the height of the wellhead. Well, is the space in the well to carry out the relevant operation. Check the chute of the well, with the same elevation of the same base, when people enter the inspection wells, to stand on both sides of the sink. So the bottom is filled with fine stone concrete, accounting for a certain height of the wellbore, the remaining wells, the net height is the height of the well
