Double walled tanks are designed and built to be a tank within a tank (interstitial space). This interstitial space acts as an indicator and containment of any tank failure or leaks. These tanks are easily deployed and are able to be put into service immediately as no secondary containment installation is needed.
Our standard Double Walled Tanks are all built to API 12F Codes and come in a variety of different orientations and capacities.
Available tank sizes: 100bbl, 200bbl, 400bbl & 800bbl Ecotanks
All of our stock units are standardly setup with the following:
- External paint or external insulation
- Flat bottomed floor or sloped bottomed floor
- 8” 3 saddle “L” skid
- Standard inlet, outlet and vent nozzles c/w valves and plugs.
- 3” external VRU downcomer.
- Sour sealed gaugeboard c/w poly float and internal guides
- Sour sealed thief hatch
- Access ladder
- 2’x 4’ manway
- Hauling pads
- Lifting lugs
- Heating Source: U-Tube Burner System or Catadyne Heating System
Options:
- Internal coating
- Extra nozzles
- Fall arrest systems
- Envirovault enclosure
New and used purchase pricing and rental optionals are available.
Our Double Walled Tanks
Our Standard 800bbl (128m3) Horizontal Production Tanks are built to API 12F and are designed to be a “plug and play” production unit. The full system is setup with (2) horizontal 400bbl insulated tanks which are fully self-contained and AER Compliant within the integrated skid/containment. Units are fully skidded and are very easily setup onsite within hours of arrival.
We offer single or double-walled production tanks as well as single-walled frac tanks at the 400 bbl size.
We offer single or double-walled production tanks as well as single-walled frac tanks at the 200 bbl size.
Benoit Rentals offers 100bbl production tanks with various options to meet your site's needs.
Frequently Asked Questions
How does Benoit Rentals help operators select between 100bbl, 200bbl, 400bbl, and 800bbl double-walled systems?
Benoit Rentals’ technical team reviews your daily fluid production, lease footprint, and trucking frequency to determine the most cost-effective capacity. For small footprint well tests or chemical injection staging, our 100bbl and 200bbl tanks offer compact utility. For active multi-well batteries and high-rate flowback, our 400bbl upright tanks and 800bbl Ecotank systems provide high-volume surge capacity. We balance storage volume against transportation costs to ensure you never pay for unnecessary capacity on your lease.
How does renting Benoit Rentals' double-walled tanks eliminate the need for external secondary containment?
Renting Benoit Rentals’ double-walled tanks eliminates the substantial labor and material costs of building external steel or earthen containment berms. Engineered with an integral interstitial space acting as a secondary tank, our units satisfy Alberta Energy Regulator (AER) Directive 055 and Saskatchewan Directive S-10 requirements for self-contained storage. We provide complete engineering documentation and stamped API 12F manufacturing data to your environmental compliance team, ensuring your lease passes regulatory audits effortlessly.
What heating configurations does Benoit Rentals install to prevent fluid freeze-ups during prairie winters?
To keep heavy crude, emulsions, and produced water pumpable throughout sub-zero prairie winters, Benoit Rentals outfits double-walled tanks with custom thermal packages before dispatch. We install CSA-compliant U-tube internal fire-tube burners for high-heat duty or flameless catalytic Catadyne heating systems for classified hazardous areas. Combined with heavy exterior polyurethane insulation or thermal blankets, our heating configurations prevent bottom wax dropout, valve freeze-offs, and thermal shocking during minus-40-degree cold snaps.
How quickly can Benoit Rentals deliver and commission the 800bbl Ecotank cascade production package on lease?
Our 800bbl Ecotank packages are engineered as completely self-contained, horizontal ‘plug-and-play’ production batteries. Comprising twin 400bbl insulated horizontal vessels integrated into a single heavy-duty master skid with built-in containment, Benoit Rentals mobilizes and spots the entire package with our dedicated heavy-haul fleet. Because the manifolds, equalizing lines, and containment are pre-engineered into the skid, our field team can have your 800bbl battery spotted, leveled, and ready for fluid intake within hours of arrival.
Does Benoit Rentals manage wide-load transport permits, pilot escorts, and lease winch-truck spotting?
Transporting heavy skidded double-walled tanks across Alberta and Saskatchewan requires specialized hauling and strict highway compliance. Benoit Rentals manages the entire logistical process in-house. We secure all required provincial wide-load permits, schedule certified pilot cars, and dispatch tandem or tri-drive winch trucks with heavy-duty lowbed trailers. Our experienced oilfield drivers don’t just offload at the lease approach—they winch, spot, and align the tank’s 8-inch L-skid precisely onto your compacted pad or rig mats.
How does Benoit Rentals outfit double-walled tanks to safely manage sour fluids and volatile H2S gas?
When handling volatile fluids with elevated hydrogen sulfide (H2S) levels, Benoit Rentals outfits your rental tank with specialized sour-service safety hardware. Our standard fleet features sour-sealed thief hatches and closed-loop sour gaugeboards with poly floats, allowing operators to verify liquid levels without releasing deadly vapors. Additionally, every unit incorporates a 3-inch external Vapor Recovery Unit (VRU) downcomer, allowing you to tie flash gas directly into recovery systems or portable flare stacks safely.
What custom modifications, internal coatings, and Envirovault options can Benoit Rentals install prior to delivery?
At our Chauvin manufacturing and maintenance facility, Benoit Rentals customizes double-walled tanks to meet unique operating demands before delivery. We apply high-performance internal epoxy linings (such as Enviroline) to resist aggressive corrosion from raw sour brine and chemicals. Furthermore, we can install Envirovault heated valve enclosures, custom nozzle orientations, sloped clean-out floors, and OSHA-compliant perimeter fall-arrest systems, ensuring the vessel arrives on your lease completely tailored to your site piping and safety protocols.
How does Benoit Rentals assist with interstitial leak detection monitoring and ongoing field maintenance?
The interstitial space between the inner and outer tank walls serves as an active containment barrier and early-warning leak detector. Benoit Rentals equips its double-walled units with interstitial monitoring ports, sight gauges, or electronic leak-detection sensors that instantly notify field operators if the primary containment shell is compromised. If maintenance or instrumentation troubleshooting is ever required, our mobile field mechanics dispatch promptly from regional hubs to inspect, repair, or service the unit on lease.
What rental contract flexibility and rent-to-own terms does Benoit Rentals offer for double-walled tanks?
Whether you need a 200bbl double-walled tank for a rapid two-week completions program or an 800bbl Ecotank for a multi-year battery installation, Benoit Rentals provides adaptable commercial agreements. We offer competitive daily, weekly, and monthly rental rates without locking you into rigid contracts. If an exploratory well demonstrates permanent commercial viability, our rent-to-own programs allow you to apply a portion of your ongoing rental payments directly toward purchasing the tank outright.
How does Benoit Rentals support tank decommissioning, cleaning, and demobilization at project completion?
When your testing or production campaign concludes, Benoit Rentals coordinates the complete demobilization and return transport of your double-walled vessels. Our logistics team schedules winch-truck dispatch around your rig-out timeline, ensuring rapid removal to prevent ongoing lease rental charges. To ensure highway safety and regulatory compliance during transit, we assist operators in coordinating hydro-vac fluid evacuation and steam-wash services before our drivers winch the tank onto transport trailers for return to Chauvin.