Where heat measurements
become flow insights

Harnessing thermal energy and two decades of learning to quantify flow, from the reservoir to the wellbore.

Fluids moving in the well system have thermal mass and can heat or cool the areas they touch. These temperature changes carry valuable information about fluid behavior, especially flow rates and profiles.

The trouble is, the physical laws of thermodynamics and fluid dynamics are incredibly complex, and the interactions between them even more so. The 3D world of metal, concrete and earth we call the well system adds more complexity. Extracting accurate flow data from this environment may seem like an impossible task.

But not for Cascade.

Twenty years ago, TGT founded its business on transforming temperature changes into flow information, and since then we have taken this capability further than anyone. Today, Cascade delivers that capability through our ‘True Flow’ products to reveal flow like never before.

Cascade platform


20-years of pioneering scientific research, ingenuity and direct field experience in applying thermal flow diagnostics to thousands of well systems globally.

Advancing industry knowledge in thermofluid dynamics with more than 70 recognised industry publications.

Expertise in thermodynamics, fluid dynamics and 3D numerical modeling.

Engineered entirely in-house at our technology centre.

Tested and proven in thousands of well systems for more than 70 international operators.

Programmes & Methods

Analysts customise proprietary diagnostic programmes, activating well system behavior to expose targeted thermal and fluid dynamics.

Tools & Measurements

Cascade uses fast-response, high resolution temperature sensors from the Indigo platform to make accurate answers.

Processing & Modeling

Powerful 3D thermofluid modeling code, unique to TGT, reconciles all critical well system elements including reservoirs, completion components and fluid type to produce accurate flow profiles.

Automated modeling code rapidly resolves the ‘answer’ from the input data.

Parallel processing makes thousands of calculations, accurately solving multiple thermofluid equations.

Analysis & Interpretation

Analysts combine Cascade findings with information from Chorus and Indigo to provide accurate flow profiles across the reservoir.

Maxim provides analysts with a host of Cascade Apps and versatile visual displays to facilitate detailed analysis and confident interpretation.