Trailer Mounted Water Well Drilling Rigs: Pros and Cons

A trailer mounted water well drilling rig is a drilling rig built on a trailer chassis, pulled by a separate truck tractor. It's a popular choice for water well contractors because it offers a good balance of mobility, cost, and drilling capacity. But like any equipment, it has tradeoffs. Here's what you need to know to decide if it's right for you.

Advantages of Trailer Mounted Rigs

More Flexible Than Truck Mounted. With a trailer rig, you can detach the truck and use it for other work while the rig sits on site. If you're a small contractor who only has one truck, this is a big advantage. You're not tying up your only truck just to move the rig.

Cheaper Than Truck Mounted. A trailer mounted rig is usually 10-20% cheaper than a comparable truck mounted rig, because you don't have to buy the integrated truck chassis. If you already have a truck tractor, this is a no-brainer — you save money upfront.

Easier to Maintain. Trailer rigs are simpler mechanically. There's no complex integration between the truck and the drilling rig. When something breaks, it's usually easier and cheaper to fix.

Disadvantages to Consider

Less Maneuverable. A trailer rig is longer and harder to maneuver in tight spaces. If you're drilling in backyards or on narrow job sites, a truck mounted rig is easier to position. You need more space to turn and park a trailer rig.

Needs a Separate Truck. This sounds obvious, but it's worth saying: you need a truck tractor powerful enough to pull the rig. If you don't already have one, that's an extra cost you have to factor in.

FAQ

Q: How deep can a trailer mounted water well rig drill?
A: Most trailer rigs handle 200-400 meter wells. Larger models can go 500+ meters, but then you're getting into heavyweight territory. For most residential and small commercial water well work, a 300-meter trailer rig is the sweet spot.