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Water Well Geothermal

Water Well/Geothermal

Overburden Casing

DPI manufactures a full range of overburden casing, 2.275" to 16". Our casing is CNC machined for a precision fit. We manufacture some different grades of casing to match your specific application.

Overburden Casing

6 5/8" Speed thread casing

DPI manufactures casing from high-grade alloy steel with substantial yield, tensile strength, and overall durability, which enables it to be reused multiple times, and perform in more difficult and deeper applications.

DPI also manufactures casing from mild steel for shallow single-use applications. This casing is less expensive, but sufficient for shallow pre-collaring of an existing boring, or wash pipe, matching a scenario where casing is dedicated to the boring remaining in place when the bore hole is complete. Emphasis is still on getting the job done, but also in the bore hole.

We will look forward to discussing with you your specific needs, and matching those requirements with the appropriate product.

Speed Casing

We use a unique casing thread profile, which is a DPI innovation. A slightly tapered profile enables both quick and easy makeup, and breakout, saving you time and money.

Overburden Casing Chart

Pipe OD Pipe ID Wall Weight
2.375" 1.995" .190" 4.60#/ft
2.875" 2.441" .217" 6.40#/ft
3.500" 2.920" .254" 9.30#/ft
4.000" 3.548" .226" 9.50#/ft
4.500" 4.000" .250" 11.60#/ft
5.000" 4.494" .253" 13.00#/ft
5.500" 5.012" .244" 14.00#/ft
6.625" 6.049" .288" 20.00#/ft
7.000" 6.456" .272" 20.00#/ft
7.625" 7.025" .300" 24.00#/ft
8.625" 8.097" .264" 24.00#/ft
9.625" 9.001" .312" 32.30#/ft
10.750" 10.192" .279" 32.75#/ft
11.750" 11.084" .333" 42.00#/ft
13.375" 12.715" .330" 48.00#/ft