Building the Perfect MWD Service Laboratory: Experience, Planning, and Knowing What to Measure
- Chris Ely
- Jul 15
- 3 min read

In the MWD industry, a service laboratory is much more than a clean building with workbenches and test equipment. It is the foundation of tool reliability.
Every decision made in the lab—from how equipment flows through the facility to where a directional package is tested—can ultimately affect what happens thousands of feet below the surface.
At MWD Downhole Drilling Tools (MWD-DDT), our approach to developing a world-class MWD service facility is based on years of hands-on experience with MWD and LWD technology, field operations, equipment repair, failure analysis, and quality control.
We have learned that creating the right laboratory requires more than purchasing equipment. It requires understanding the technology well enough to recognize the variables that can affect it.
Our recent MAGMAP magnetic survey of our Spring facility is a good example.
The Details That Matter
When most people look at an MWD service facility, they see benches, test stands, computers, tools, and inventory.
Our team sees something different.
We see the entire lifecycle of an MWD system.
A tool arrives from the field. It must be identified, inspected, disassembled, cleaned, evaluated, serviced, rebuilt, tested, verified, documented, and ultimately released back into operation.
The laboratory needs to support every one of those steps.
That requires carefully planned work areas, proper test equipment, controlled processes, experienced personnel, and a physical environment that supports the technologies being serviced.
Sometimes, however, the most important characteristics of a laboratory are the ones you cannot see.
MAGMAP: Understanding the Magnetic Environment

MWD directional systems rely on sensitive magnetometers and accelerometers to determine tool orientation and calculate directional surveys.
That means the environment in which these systems are tested matters.
Steel building structures, machinery, workbenches, electrical equipment, stored downhole tools, and other sources of magnetic interference can influence the local magnetic environment.
Simply finding an open area on the shop floor does not necessarily mean you have found the right location to evaluate a directional sensor.
This is why we recently performed a detailed gradiometer and magnetic survey of our Spring MWD service facility using Bench Tree MAGMAP.
Experience Changes How You Build a Laboratory
There is a significant difference between building a general repair facility and creating a laboratory specifically for MWD and LWD technology.
When you have spent years working with these systems, you begin designing the facility around the problems you have actually encountered in the field.
You understand why proper mechanical assembly matters.
You understand why electrical connections need to be verified.
You understand how shock and vibration affect electronics.
You understand how batteries, pulsers, directional modules, gamma sensors, PWD systems, and LWD technologies interact.
And you understand that a tool that powers up on a workbench is not necessarily a tool that is ready to go downhole.
That experience changes the questions you ask when designing your service processes.
Instead of asking, "Does the tool work?"
We want to know:
Has it been tested under the right conditions?
Are we confident in the sensor performance?
Have we identified potential failure points?
Can we trace what was repaired or replaced?
Do we have objective data supporting the decision to release the tool?
That is the difference between repairing equipment and managing reliability.
The Perfect Laboratory Is Never Really Finished
Our Spring facility represents a major investment in expanding MWD-DDT's ability to service and support MWD and LWD technology.
But we don't view building the perfect MWD service laboratory as a project that eventually reaches a finish line.
Technology changes.
Tools evolve.
New failure modes are identified.
Testing methods improve.
The laboratory should evolve with them.
The MAGMAP survey is one example of that philosophy. We wanted to better understand the magnetic environment within our own facility, so we brought in the technology and expertise necessary to measure it. That information gives us another layer of knowledge about our laboratory and how we use it.
Because when an MWD system is thousands of feet below the surface, there is no workbench nearby.
There is no opportunity to make one more adjustment.
The work has to be done correctly before the tool ever leaves the shop.
And creating that level of confidence begins with having the experience, knowledge, equipment, processes, and environment to do the job right.
MWD-DDT
DRILL HARD. MEASURE EVERYTHING.




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