MudHog
Automated tank cleaning through the thief hatch or roof manway, with no confined space entry on storage tanks.
How it works
What MudHog does
MudHog is PMI's mobile automated tank cleaning system. On above-ground storage tanks and vessels, multi-axial jet nozzles go in through the thief hatch or a roof manway on top of the tank and wash the inside, so the tank is cleaned without sending a crew into the confined space. The unit is trailer and forklift portable, runs on 480v, and can clean up to four tanks at the same time. PMI also runs MudHog on offshore vessel and rig scopes, where the crew installs the tools in the tank by hand, and it is the workhorse system behind the OSV and rig cleaning lines.The same skid works on land. Mounted on a truck, MudHog cleans gunbarrel and production tanks onshore with the same no-entry wash. In an October 2025 pilot in Midland, TX, it cleaned 4 feet of bottom solids out of a 750 barrel gunbarrel tank in 40 minutes of wash time from the thief hatch. A June 2026 job on a 1,000 barrel tank removed 10.5 feet of sediment in 4 hours. No one entered a tank on either job.
Check fit on your job
Specifications
The numbers your engineers will ask for
Send us the tank or the system and we will confirm fit before anything mobilizes. If this is not the right tool for the geometry, we will say so and quote the conventional scope instead.
Check fit on your job- Pumps
- Four 15 HP variable speed centrifugal
- Flow rate
- 125 gallons per minute
- Maximum pressure
- 363 psi
- Nozzles
- Multi-axial jet, 360 degree coverage
- Nozzle performance
- 70 gallons per minute at 170 psi
- Wetted materials
- Stainless steel pumps, filter pots and screens
- Power
- 480v
- Simultaneous tanks
- Up to four
- Transport
- Tractor-trailer and forklift portable
- Minimum hatch opening
- 4 inches, with current nozzles
Why crews ask for it
What it changes on the job
Equipment earns its place on a job by shortening the window, keeping people out of the hazard, or removing a cost the operator was never going to price accurately. Here is what this unit is for.
Cleans storage tanks without confined space entry.
Faster than conventional cleaning, with less downtime.
Less time with wells shut in and tanks isolated.
Cleans up to four tanks at the same time.
Vessel gets worked where it already ties up.
Fewer entries, fewer permits, less exposure.
Describe the job and we will tell you whether MudHog fits it.
Quotes go straight to our ops and sales leads. Callback within one business hour. PMI works from headquarters in Morgan City, two yards at Fourchon, and offices in Broussard, Midland and Houston, with dispatch answering 24/7.
