Hydrate Dissociation P-T Curve
Generate a hydrate equilibrium screening curve from gas composition, apply salinity and inhibitor depression, and check whether an operating point sits inside the hydrate-risk region.
Gas Composition
Operating Conditions
Aqueous Phase
Dissociation Curve
The curve is a screening correlation, not a tuned thermodynamic vdW-Platteeuw model. Use laboratory or simulator validation for final design.
Gas SG
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air = 1.0
Net depression
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°F
Dissociation T @ P
--
°F inhibited
Operating point
--
--
Inhibitor Recommendation
Required inhibitor concentration
--
Injection rate
--
lb/MMscf gas
Curve points
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downloadable rows
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Curve Table Preview
| Temperature, deg F | Dry-gas pressure, psia | Inhibited pressure, psia |
|---|
References
- Sloan, E. D. and Koh, C. A., Clathrate Hydrates of Natural Gases, 3rd ed., CRC Press, 2008.
- Motiee, M., "Estimate possibility of hydrates," Hydrocarbon Processing, 70(7), 98-99, 1991.
- Munck, J., Skjold-Jorgensen, S., and Rasmussen, P., "Computations of the formation of gas hydrates," Chemical Engineering Science, 1988.
- GPSA Engineering Data Book, Section 20, hydrate prediction and inhibitor screening methods.
- Hammerschmidt, E. G., "Formation of Gas Hydrates in Natural Gas Transmission Lines," Industrial and Engineering Chemistry, 1934.
Open-Source Attribution
Hammerschmidt helper functions adapted from J-Ellette/Petroleum-365, by James Ellette, MIT License. The upstream license text is bundled as LICENSE_Petroleum-365.txt.
Hydrate curve generation uses original client-side screening code based on the references above; no hydrate-equilibrium package code was copied.
Need a tuned hydrate operating envelope for a field case?
Groundwork Analytics can turn lab data, composition ranges, and restart scenarios into an operator-ready flow-assurance screen.
Book a free strategy call →Disclaimer: This tool is for preliminary engineering screening. Hydrate dissociation curves depend on water activity, gas fugacity, hydrate structure, and thermodynamic model tuning. Validate against measured data or a rigorous hydrate package before using results for facility design, operating limits, or safety-critical decisions.