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Well Drilling Estimate Template

Per-foot drilling, casing, grouting and the pump package — with depth stated as an expectation. Free PDF.

No trade prices a bigger unknown than a water well. The depth is whatever the aquifer is at that spot, and the only evidence is the drillers' logs from wells nearby — which is why every honest well estimate is a per-foot document with an expected depth on it rather than a total. What the client is buying is a rig on site, a rate per foot, a rate per foot of casing, and a clear statement of what happens if the hole comes in shallow, deep, or dry.

Issued by

Deepwater Drilling & Pump

820 North Rouse Avenue

59718 Bozeman, MT

United States

office@deepwaterdrill.example

Bill to

Elspeth Hargreaves

77 Antelope Flats Road

59714 Belgrade, MT

United States

e.hargreaves@example.com

Estimated total

$19,950.00

Valid for 30 more days · Sep 5, 2026

This is an estimate, not a bill. Prices may change.

What the depth is based on

Three wells within a mile finished between 240 and 310 feet. Yours may be shallower or deeper, and the footage lines above are billed at what is actually drilled.

Description	Qty	Rate	Tax	Amount
Rig mobilisation to site Owed whether or not the hole produces water	1	$2,400.00	—	$2,400.00
Drilling — per foot Estimated 280 ft from three logged wells within a mile; billed per foot drilled	280	$38.00	—	$10,640.00
Steel casing and grout seal — per foot Estimated 80 ft of casing; state code requires the seal	80	$27.00	—	$2,160.00
Pump, pressure tank, wiring and control package Sized from the completed depth; re-priced from the driller's log	1	$4,750.00	—	$4,750.00

Subtotal	$19,950.00
Total	$19,950.00

Terms

Mobilisation on scheduling, footage on completion of the hole, pump package on start-up and disinfection.

Estimate #EST-9046 · Deepwater Drilling & Pump · Page 1 of 1

What this estimate commits you to

How long it stands: Thirty days on mobilisation and the per-foot rates; the pump and tank are held only while the supplier's list price stands and are re-quoted if it moves.
What it does not cover: Everything past the wellhead: the trench and water line to the building, electrical service to the pump, the pressure tank's plumbing indoors, and any filtration or treatment the water test turns out to require.
What would change the price: Depth, which is not knowable in advance. Footage above or below the expectation is billed at the rate stated, a formation that needs more casing than figured adds casing feet, and a hole abandoned as dry still owes the footage drilled.
How the client accepts it: Sign and pay the mobilisation to enter the rig schedule; a drilling date follows the state well permit, and the balance is invoiced against the driller's log the well is registered with.

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What to put on a well drilling estimate

The mobilisation charge, which is owed whether the well produces or not
The drilling rate per foot and the expected depth, with the neighbouring well logs it was taken from
Casing per foot, stated separately, because how much is needed depends on the formation
Grouting, well seal and development, each of which is required by the state code rather than optional
The pump, pressure tank, wiring and control package, priced as its own package that depends on final depth
What happens to a dry hole: whether it is abandoned at the client's cost and what a second attempt would be

Questions

How can I estimate a well without knowing the depth?

Give the rate and the expectation separately. State the per-foot price, the depth of the nearest logged wells, and the depth the estimate's total is calculated at — then the client understands that the total is arithmetic on an assumption rather than a promise, and a 320-foot well does not arrive as a shock at 240.

Who pays for a dry hole?

Whoever the estimate says, and it must say. The industry norm is that the client pays for footage drilled whether or not water is found, because the rig, the fuel and the crew were spent either way — but a client reading that for the first time on an invoice will not accept it.

Does the pump price depend on the well depth?

Yes, and it is the reason the pump package is estimated rather than quoted. Pump horsepower, wire size and drop pipe length all follow the depth the well finishes at, so the package is re-priced from the driller's log once the hole is complete.

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