ANSWER FAST.

LOCATE LEAKS IN HOURS, NOT WEEKS.

ANSWER FULLY.

SEE THE ENTIRE WELLBORE, NOT JUST A SNAPSHOT.

ANSWER SIMPLY.

REDUCE COMPLEXITY WITH WIRELINE-FREE SURVEYS.

DETECT SMALL, INTERMITTENT LEAKS.

NO SWEAT.

ANSWER CONFIDENTLY.

MAKE CRITICAL DECISIONS WITH CERTAINTY.

Well diagnostics. Answered.

Conventional leak detection can take days to acquire data, rely on proprietary ‘black box’ processing, and still leave questions unanswered.
WellSense offers a better way. By combining advanced fibre-optic diagnostics, expert interpretation and streamlined deployment, we reduce operational burden, eliminate unnecessary complexity and deliver the clarity you need to make the right decisions quickly.

WellSense: The Answer.

Hundreds of deployments worldwide

Whether you’re locating leaks, investigating sustained annulus pressure or diagnosing complex well integrity issues, WellSense combines wireline-free fibre-optic diagnostics with expert interpretation to deliver fast, confident answers.

Don’t make leak detection harder than it needs to be

The old way

  • Data in days
  • Snapshot measurements
  • Wireline / slickline intervention
  • Multiple contractors and handoffs
  • Crews of 5-6 people
  • Inconclusive results

The WellSense way

  • Answers in hours
  • Continuous full well visibility
  • Fibre deployed without wireline
  • One integrated service
  • Small crew of 2 people
  • Answers you can act on

Every well issue
raises questions.
Find the answers.

Well diagnostics isn’t just about finding a problem. It’s about understanding the source, the significance and the next step. We helps operators locate problems quickly, understand them clearly and act with confidence.

EXPLORE WELL DIAGNOSTIC SOLUTIONS >

Need efficient and easy deployment?

Get the answer

Fli Dynamic De-spool solutions are ready when you are. A simple, compact self-contained solution with rapid mobilisation and easy, single-operator deployment.

Whether planned or reactive, you can acquire critical data on demand - no waiting for wireline or slickline availability, no scheduling headaches.

Want answers in hours, not days?

Get the answer

With rapid data interpretation available on-site or remotely, our specialists - or your own team - can quickly and confidently diagnose wellbore issues, including leaks, cement assurance, injection profiling, and more.

With WellSense, multiple well surveys can be completed quickly and efficiently, making it ideal for high-volume well activities.

Tight on space or access?

Get the answer

As a winchless solution, Fli Dynamic De-spool fibre optic can be hand-carried and deployed at the wellsite by a single engineer – perfect for difficult to access wells, crowded facilities, and offline intervention.

It's simply the best way to deploy optical fibre for distributed sensing in a static well.

Looking for reliable, repeatable well data?

Get the answer

The Fli Dynamic De-spool probe is designed for single use. Its affordability and availability make distributed sensing surveys more accessible and repeatable across all your static wells.

The compact probe is typically disposed of in the rat hole after the job is completed. Alternatively, the dissolvable Fli probe eliminates any risk of the probe being left in the well.

Proof beats promises

04.03.26

From 5 Days to 14 Hours: Transforming offshore leak detection in the UAE.
15.10.25

From complexity to clarity with multi-leak paths
14.07.25

Intermittent leak pinpointed with precision
05.04.24

Overcoming the heat to detect five leak paths
08.11.23

Leak revealed where wireline unsuccessful
24.07.23

Answers delivered in less than 12 hrs

Fli Technology

Fli Dynamic De-Spool probe

At the heart of our fibre optic solutions is the Fli Dynamic De-Spool probe, where the bare optical fibre is de-spooled directly from the moving probe as it descends into the well. This offers significant operational advantages over fixed-origin spooling such as wireline and slickline, requiring only minimal surface and in-well hardware to perform the survey.

The Fli Dynamic De-Spool probe and bare optical fibre offers precise depth control, increased sensitivity, and makes the end-to-end placement of optic fibre highly efficient.

MORE >

Innovation

Inspired by spiders

Spiders employ dynamic spooling systems through web-building, where silk is deployed directly from the moving spider.

Fli Dynamic De-spool technology employs the same principles, aligning fibre release with motion. It ensures precision, adaptability to complex trajectories, and minimal stress while maintaining efficiency and continuous deployment.

And just like a spider web, bare fibre optic is easily brushed aside, enabling bare fibre to be left in the well to simplify operations. The bare fibre does not impede subsequent intervention operations, production or injection.

Also available
to approved
service partners

Our Fli Dynamic De-spool probe with hardware is available for direct purchase.
The probe and fibre are compatible with any interrogator and easy to deploy, making them ideal for integrating the advantages of distributed direct measurement into your operations, such as seismic surveys and integrated well integrity solutions.

ENQUIRE NOW >

Don’t wait for answers.

Get the clarity you need to make confident decisions – without the complexity,
disruption and delay of traditional leak detection approaches.