Well Drilled - Results

[Egon]

The air line is for testing water depth via air pressure in the line. It is not for adding air.

Bubbler.

 

[Pettrix]

So if the pump is putting out its max of 20GPM and the well static level never drops below let's say 350'. What is the GPM production of the well then? It would have to be higher than 20GPM. Maybe 25-30GPM?

 

[Pettrix]

Is there any harm or damage to a well pump that sits idle for months at a time?

 

[Qapla]

Is there any harm or damage to a well pump that sits idle for months at a time?

Months at a time should not damage the pump. I recently revived a well that has sat idle for somewhere between 10 and 15 years. The pump started right up with the existing controller and a flow test gave me 25 GPM from a 4" well with a submersible pump. We do not know for sure but think the pump is 2 or 2.5 hp

This particular well is for irrigation only.

 

[Larry Caldwell]

I got TWO pump options:

A - 3HP Goulds Pump - 13GPM - 3 PHASE - Aquavar 3HP 3 Phase Drive - #10 wire (480 feet), 1.25" SCH 40 GALVANIZED drop pipe (380 feet), 1.25" SCH 140 PVC (100 feet), 8.5 Hydro Pro Tank, misc parts, install, 5-year P&L warranty = $6,700

B - 5HP Goulds Pump - 18GPM - 3 PHASE - Aquavar 5HP 3 Phase Drive - #10 wire (380 feet), #8 wire (100 feet), 1.25" SCH 40 GALVANIZED drop pipe (380 feet), 1.25" SCH 140 PVC (100 feet), 8.5 Hydro Pro Tank, misc parts, install, 5-year P&L warranty = $8,100

Any advice???

I wish I could get 3 phase power at my place, but there is no industrial power user anywhere near me, and the only power available is single phase. A 100 foot pump won't do the job in a 500 foot well. You are looking at lifting over 200', probably 250' when you start pumping, so you need a 250' pump. The number of stages determines how high a pump will lift.

 

[Larry Caldwell]

My concern is if the Schedule 120 PVC pipe can carry the weight of a 5HP pump (17 lbs) and the distance of 480 feet?

Maybe installing a 5 foot section of stainless steel pipe at the pump end to help absorb the torque of the motor and then running Schedule 120 PVC the rest of the way up.

The pump doesn't hang from the pipe, it hangs from a poly rope that carries the weight. They will also install a torque arrestor on the pump to keep it from twisting the pipe off.

 

[Pettrix]

I wish I could get 3 phase power at my place, but there is no industrial power user anywhere near me, and the only power available is single phase. A 100 foot pump won't do the job in a 500 foot well. You are looking at lifting over 200', probably 250' when you start pumping, so you need a 250' pump. The number of stages determines how high a pump will lift.

The power coming in is single phase 230V but the controller converts it to 3 phase to the pump motor.

The pump has 21 stages

 

[Pettrix]

The pump doesn't hang from the pipe, it hangs from a poly rope that carries the weight. They will also install a torque arrestor on the pump to keep it from twisting the pipe off.

They will actually install 2 torque arrestors. One at the pump and one midway on the drop pipe.

 

[CurlyDave]

I am going with 3HP - 13GPM Goulds Pump (4-20 range GPM capable). The setup:

1.25" SCH120 PVC 480 feet, stainless steel couplings at each 20' junction
2 torque arrestors (one at pump and one at midway in drop pipe)
2-3 brass checkvalves
brass 7" pitless adapter
Frost free connection at well area
Brass hose bib
10 Gauge - 3 wire - double insulated wire for pump (480 feet)

I would strongly recommend upgrading from brass to stainless check valves. The extra cost is going to be very small, maybe an extra $10 each. The brass ones installed with my original well were pretty corroded after 10 years.

Pulling the pump to replace them is north of a thou$and.

We don't use pitiless adaptors here so I don't know about that, but if a stainless one is available, I would opt for that also.

The installer may well tell you that it isn't necessary and that brass is good enough, but he doesn't have to pay for pulling the string and installing new ones, you pay him.

 

[Egon]

The pump doesn't hang from the pipe, it hangs from a poly rope that carries the weight. They will also install a torque arrestor on the pump to keep it from twisting the pipe off.

The downhole pump is attached to the tubing. The rope is a back up device so things don't fall into the sump. The rope can also be used to pull pump and tubing.