One cover for every pond and tank on site.
Covex® is a hexagonal floating cover that seals the liquid-air interface. On produced water, evaporation ponds, fire water and cooling basins it cuts evaporation, suppresses odor and VOC release, blocks algae, and removes the open surface that draws in birds and wildlife.
It all starts at the liquid-air interface.
Wherever produced water, process water or stored water meets the air, the same things happen across the whole facility: water and hydrocarbons evaporate, vapors and odor escape, light feeds algae, and the open surface draws in birds and wildlife. In arid basins an open pond can lose well over 2,000 mm of water column per year to evaporation alone.
Evaporation & volume
Open produced water and evaporation ponds lose volume to the air every day. Where the goal is to store and recover water, that loss is wasted resource; where ponds are sized for capacity, every uncovered surface changes the water balance.
Odor, VOC & emissions
The open surface lets vapors, odor and volatile organic compounds escape straight to atmosphere. That means lost product, community odor complaints, and exposure under tightening air-quality and emissions reporting rules.
Wildlife & compliance
Open ponds attract migratory birds and wildlife to water that may be saline, hydrocarbon-bearing or chemically loaded. A single mortality event can trigger reporting obligations, penalties and reputational damage.
A cover that self-installs and self-adjusts.
The hexagonal HDPE modules float, interlock, and settle on their own to the reservoir level. They require no structure, anchoring, or maintenance. Each unit carries water ballast that keeps it in place even in extreme wind.
Less evaporation
The physical barrier of the hexagons cuts the mass exchange between liquid and air, preserving stored volume and recovering water across produced water and evaporation ponds.
Contains odor & VOC release
By sealing the surface, the cover suppresses the escape of vapors, odor and volatile organic compounds, reducing emissions and community complaints.
Stops algae growth
By blocking light, it inhibits photosynthesis in the stored water, protecting water quality and reducing downstream treatment.
Virtually eliminates the open surface
With no visible reflective surface, migratory birds and wildlife are far less likely to detect the pond and stay away.
The same cover, the value that matters to you.
The physics of the liquid-air interface is universal, but the priority changes with the pond and the fluid. Find your application below.
Produced Water
- Evaporation control that preserves stored volume and protects the facility water balance in arid basins.
- Odor and VOC containment over hydrocarbon-bearing water, cutting emissions and community complaints.
- HDPE formulated for ESCR, the critical factor against saline and chemically loaded water.
- Wildlife exclusion on open ponds, reducing the risk of migratory-bird mortality events and the reporting that follows.
Evaporation & Emissions
- Where evaporation is undesired, the cover suppresses water and hydrocarbon loss and stabilizes pond level.
- Surface sealing limits the escape of vapors, odor and volatile organic compounds to atmosphere.
- Passive performance with no power, no blowers and no active devices to maintain.
- Supports air-quality and emissions-reporting obligations with a permanent physical control.
Fire Water & Cooling
- Algae and odor control that keeps fire water and cooling basins clean and protects pumps and intakes.
- Evaporation control on open tanks and basins, reducing makeup water and chemical dosing.
- Freeze delay in cold-climate operations: water stays available longer and intake infrastructure stays protected.
- Wildlife exclusion on open process water surfaces, a recurring inspection finding at facilities.
Where temperature matters, the surface is where you lose it.
Covex® regulates water temperature in both directions: by day it blocks solar radiation and keeps the pond cooler, cutting evaporation when it peaks; by night it retains heat and slows cooling, delaying freezing in fire water and cooling basins.
By day, it blocks the sun and keeps water cooler.
With High ambient temperatures, the hexagons blocks solar radiation before it heats the water. The covered surface stays several degrees below the uncovered one.
By night, it retains heat and delays freezing.
In cold-climate operations, the heat the water loses at night can freeze open ponds and basins, threatening fire water availability and intake infrastructure. Against a -5°C environment, Covex® keeps the water up to 5.2°C warmer than the uncovered surface during the first hours of the night.
The effect is decisive where there is freezing risk: uncovered water reaches 0°C at 7.5 hours, while under Covex® the freezing point is delayed to 12 hours, 60% more time.
Protect wildlife, contain emissions, back your compliance.
Open ponds at oil & gas facilities sit under tightening wildlife-protection and air-quality regulation. Covex® provides a continuous physical barrier that eliminates the visible open surface, becoming an auditable control to mitigate bird and wildlife risk, suppress odor and VOC release, and keep operations running without interruption.
No open surface, no attraction
By covering 98% of the surface, migratory birds are unlikely to perceive a body of water to land on or drink from. The deterrence is structural and does not rely on active devices such as nets, cannons or lasers.
Contains odor and VOC release
The sealed surface limits the escape of vapors, odor and volatile organic compounds to atmosphere, reducing emissions, product loss and community complaints.
HDPE grade for harsh fluids
High-density polyethylene withstands contact with saline and hydrocarbon-bearing produced water. The formulation prioritizes environmental stress cracking resistance (ESCR), the critical factor in produced-water chemistry.
Zero maintenance, automatic adjustment
The hexagons rearrange themselves as the level changes. There is no structure to inspect and no anchors to fail during an audit.
Open ponds that birds and wildlife can access are a recurring source of mortality events, reporting obligations and penalties across oil & gas operations.
Across jurisdictions, regulators expect operators to keep migratory birds and wildlife away from exposed produced water, evaporation and disposal ponds. Common measures include fencing, netting and covering the open surface. Active deterrents such as cannons, lasers, flagging and bird balls are widely used, but they depend on equipment that can fail, drift or lose effectiveness over time.
Data measured on site, not catalog promises.
25+ years sealing open water and process ponds.
Covex® has protected open water and process ponds across demanding industrial environments, from high-altitude desert to sub-zero climates, for more than 25 years. The same field-proven cover now brought to oil & gas ponds and tanks.
Let's do the numbers.
Tell us about your pond or tank and we will provide an estimate of evaporation, emissions reduction, and payback for your site.
A specialist will review your site data and contact you with a savings and payback estimate.