Well Repair Installation of Well Liners Grouting off poor water producing areas Modifying and Upgrading Well Heads Unique Design Build Projects

Consider all the Costs of a New Well Making repairs to a well is often the best option vs. drilling & constructing a new well Consider all the Costs of a New Well Testing and Drilling Modifying piping and infrastructure for new well Modifying Permit to Take Water and C of A Associated Engineering Costs Abandoning the old well Time It’s going to take time to do all this, repairing almost always less time intensive

Well Casings and Screens Corrode Over Time Example of well casing with holes in it

Other examples of casing failure

Other examples of casing failure Example of well casing with holes in it (side scan)

By lining the well with a new steel well casing How do we repair this? By lining the well with a new steel well casing

General Liner Installation Procedure Step 1 Install liner Step 2 Install temporary packer Step 3 Fill space between liner and old well casing with grout Step 4 Remove Packer

Attaching Liner to Crane

Installing Grout Lines We can use grouting lines as small as 3/8” which allows us to install a relatively large diameter liner and keeps the functional diameter of the well at a maximum which allows more pump options. We can usually line a well with 50mm smaller nominal diameter liner than the original casing.

We usually use stainless steel for long life

Lifting the stainless steel liner

To install the liner we need the same amount of room as installing a pump

Liner Installation

The process takes about a week to complete

Joining two pieces of liner

Joining two pieces of liner

All casing welds made by certified welders

All casing welds made by certified welders

40m of Schedule 10 304 SS in place and ready for inspection and packer installation

But first we take a look with the camera to make sure everything is in the right place

Camera Uses We use the camera several times in the process during grout line installation during the grouting process upon completion to make sure the liner was installed as designed

Next we install the packer to seal the annular space at the base of the liner

We have sliding head packers that can line a well up to 24” in diameter

Packer Installation

Packer Installation The packer being installed on steel pipe that goes all the way through the packer so we can inspect the base of the liner during grouting to check for leaks

Packer installed and ready for grouting

Progressive cavity high pressure grout pump and tandem mixer Allows us to grout through small grout lines

Custom Grouting Special formulated grouts have been specifically designed for Lotowater by a grouting engineer and expert in the grouting field. Custom grouts are often designed for unusual or difficult conditions. Special grouts allow us to grout through small lines

A new well with liner, good for another 50 years?

Well Head Upgrades & Designs

Sometimes wells need to be upgraded to keep up with new regulations In this case, a new pitless adapter was installed Wellhead not in compliance with new regulations New well head in compliance with MOE well regulations

Sometimes we need to go back to the drawing board Well head is under here, taking water levels from this well was virtually impossible, let alone removing the pump

For a well guy this is a real pain

Well Head Design We start with a plan

We end up with something much better and much more practical

Having an experienced contractor help with wellhead design maximizes functionality

Unique Design Build Projects We often team up with engineering consulting companies on projects where wells are an integral component Our experience and knowledge is useful in coming up with functional and economic alternatives for wells

Well 2 in building Well head was in flood plain and susceptible to flooding

Well was also flowing artesian so special considerations had to be made to control the flow

We worked with the engineer on the project and came up with this design

Putting in a new custom design pitless adapter

The well head is above the 100 year flood level and meets all regulations

Upgrade Benefits No more worrying about: Flooding Heating a building Accessing the well for service

As constructed and working great