// Who this is for

For subsea engineers, ROV operators, and environmental consultants. Convert field observations of leaks into quantified flow rates for compliance reporting and risk assessment.

Input Parameters
Calculated Results
Bubble Volume
—mm³
Volume Flow Rate
—mL/min
Mass Flow Rate
—mg/min
Daily Leak Rate
—L/day
Annual Leak Rate
—m³/year
Pressure at Depth
—bar
⚠ Note: Calculations assume spherical bubbles and standard seawater conditions.
Input Parameters
Calculated Results
Droplet Volume
—mm³
Volume Flow Rate
—mL/min
Mass Flow Rate
—mg/min
Daily Leak Rate
—L/day
Annual Leak Rate
—m³/year
Pressure at Depth
—bar
⚠ Note: Calculations assume spherical droplets and account for liquid density variations.
Chemical Reference
Supported Fluids Database
36 Subsea Fluids · Industry Grade
🦠

Biocides

BIOCIDE
XC85293 — High-performance microbiological control
1 formulation · API certified
🛡️

Corrosion Inhibitors

5 VARIANTS
Cortreat 705, CRW85194, EC126A, RX-2030, WCW85359
5 types carbon steel · sour service
🛢️

Crude Oil & Refined

HYDROCARBON
Crude Oil · Diesel — light & medium grades
2 core types API range 28–45
🔬

Demulsifiers

EMULSION BREAKER
DMO86101 — water-in-oil separation >98%
1 specialty low temperature active
🧪

Glycols & MEG

7 MIXTURES
Pure MEG · 60:40 · 70:30 · 80:20 + industrial glycol blends
7 variants hydrate inhibition
🔧

Hydraulic Fluids

6 SUBSEA
Brayco, Oceanic, Transaqua, H540, Tellus, HVI-Q
6 specific fluids environmentally adapted
⚗️

Chemicals

METHANOL
Methanol (CH₃OH) — hydrate suppression & cold-start
1 high-purity industrial grade
🛢️

Oils & Antifoams

DEFOAMER
DFO82773 · Pelagic 100 — low-shear antifoam
2 solutions offshore rated
⚖️

Scale Inhibitors

4 VARIANTS
FX2443, FX2504, SCW80245, SCW85220 — inorganic scale control
4 chemistries sulphate/carbonate
💧

Water Clarifiers

CLARIFIER
RBW85178 — removes suspended solids & turbidity
1 primary agent produced water
🕯️

Wax Products

5 DISSOLVERS
Flexoil, PAO variants, EC6004A, Flotreat DF 3159 — wax crystal modifiers
5 effective blends low-temp flow assurance
⚡ Full fluid library — 36 unique subsea fluids / chemicals · last updated Q2 2026
Community Roots
🙏🏽

Contributor Recognition

🤝
The data and calculations in this leak calculator are based on a spreadsheet that has been passed around many subsea professionals over the years before eventually finding its way to me. I want to recognise and thank all those who contributed their knowledge, experience, and expertise to developing this valuable resource for the subsea industry.
#subseaknowledge · collective expertise
Offshore Collective · Anonymous Contributors
⤨ Beyond the Surface