High Temperature Stability of Organoclay

What does thermal stability mean for an organoclay formulation?

It means the formulated material retains the properties needed for its job after a specified heat exposure. For a grease this may involve consistency, oil separation and mechanical stability. For a coating it may involve storage stability, anti-sag behavior and the effect of a bake cycle. For an oil-based drilling fluid it involves the complete mud’s rheology, suspension, emulsion and filtration response after aging. These are different tests and should not be collapsed into a single temperature claim.

How should the grade be selected?

Application	Candidate starting point	Decision data
Lubricating grease	Grease-grade organoclay and its current TDS	Base-oil compatibility, consistency, oil separation and aging
Solvent-based coating	Solvent-based grade selection	Binder/solvent match, dispersion, storage and film performance
Oil-based drilling mud	OBM application grades	Mud rheology, sag, emulsion and filtration after aging

The Product Finder provides an initial shortlist. Confirm every selection with the current TDS, SDS and lot COA. A grade’s behavior in one application does not establish performance in another.

Which variables must a thermal comparison record?

Use the same complete base formulation for the control and candidate. Record grade and dose, base fluid or binder, solids, activator, order of addition, mixing energy, exposure temperature, duration and cooling procedure. Report both before- and after-aging results with units. Where pressure matters, include it in the test plan. If the system changes during aging, investigate the full recipe before attributing the change to the organoclay.

How do the application tests differ?

Grease: screen penetration or consistency, oil separation and performance after the relevant mechanical and thermal cycle. Coating: compare viscosity, settling, sag and final film quality after the specified storage or bake schedule. Drilling mud: use the well program’s conditioning and applicable oil-based-fluid procedures for rheology, electrical stability, sag and filtration. The dedicated HPHT drilling fluids page describes that decision path. How organoclay works explains dispersion and network formation, while viscosity control covers the broader rheology problem.

What are the limits of a temperature claim?

Do not use a published peak temperature as a sustained-service rating without the exposure time and formulation. Do not transfer a grease result to a drilling mud, or a room-temperature powder property to a hot-rolled mud. If a candidate fails to disperse, loses required structure or causes unacceptable separation, select another grade or adjust the formulation and retest. Ask for the underlying report before quoting any grade-specific threshold.

Frequently asked questions

Does organoclay have one maximum service temperature? No. Grade, fluid system, exposure time and acceptance criterion all matter.

Can a grease drop-point test qualify a drilling-fluid grade? No. The tests measure different formulated-system properties.

What should be measured after heating? Measure the properties that determine use: consistency or separation in grease, storage and film behavior in coatings, and rheology, sag, emulsion and filtration in drilling mud.

Which page covers a hot oil-based well? Use HPHT drilling fluids for the mud-specific testing plan.

Can I use a room-temperature viscosity result to claim stability? No. Record the relevant aging cycle and before/after values.

Request technical guidance

Send the technical team your formulation and heat-exposure conditions to request current grade documents and samples. State the base fluid, processing route, test schedule and pass/fail criteria.

By CP Organoclay · Updated 24 September 2026. For grade-specific technical review, contact the Camp-Shinning Application Technology Team with your complete fluid formulation and test conditions.