top of page
SensorX Services Logo.png

Underwater Leak Detection Surveys

SensorX provides underwater methane leak detection surveys to identify potential methane emissions along underwater pipeline corridors. Using the AquaMethane TDLAS sensor integrated with a tethered Remotely Operated Vehicle (ROV), our inspection teams conduct continuous dissolved methane measurements to identify potential leak locations beneath the water.

Now Piloting

2_edited.jpg

Direct Dissolved Methane Measurement

Measure dissolved methane directly in the water column using the AquaMethane underwater sensor.

ROV-Based Inspection

Deploy the AquaMethane sensor using a tethered ROV to inspect underwater pipeline corridors.

Continuous Methane Monitoring

Capture continuous methane measurements along the pipeline corridor during survey operations.

GPS-Referenced Data Collection

Synchronise methane measurements with GPS positions to identify and map suspected leak locations.

Screenshot 2026-11-10 at 1.59.37 PM.png

Our Underwater Leak Detection Survey Service

SensorX conducts underwater methane leak detection surveys using the AquaMethane TDLAS sensor mounted on a tethered ROV. Continuous dissolved methane measurements along pipeline routes help identify methane anomalies and suspected leak locations.

  • Conduct underwater surveys along designated pipeline corridors.

  • Measure dissolved methane directly in the water using AquaMethane.

  • Collect continuous methane measurements with GPS positioning and timestamp recording.

  • Identify and map methane anomalies to support suspected leak location assessment.

When Do You Need an Underwater Leak Detection Survey?

Underwater leak detection surveys help identify potential methane emissions from submerged pipeline infrastructure through direct dissolved methane measurements. They are suitable for investigating underwater pipeline corridors and locating suspected methane leak areas.

Inspecting Underwater Pipeline Corridors

Survey submerged pipeline routes to investigate potential methane emissions along underwater infrastructure.

Identifying Suspected Underwater Leaks

Detect methane anomalies in the surrounding water to identify potential underwater leak areas.

Monitoring Dissolved Methane

Measure dissolved methane directly in the water column using the AquaMethane underwater sensor.

Mapping Potential Leak Locations

Combine methane measurements with GPS positioning to identify and map suspected leak locations along the pipeline corridor.

From Inspection Planning to Actionable Data

01

Scoping & Technical Assessment

We begin by understanding your inspection objectives, network characteristics and survey requirements.

  • Define inspection scope and objectives.

  • Review available network and asset information.

  • Identify operational requirements and site conditions.

  • Establish data and reporting requirements.

03

Approval & Mobilisation

Once the proposal is approved, we coordinate the preparations required for the survey.
 

  • Confirm the inspection scope and schedule.

  • Coordinate access and operational requirements.

  • Prepare survey equipment and personnel.

  • Align field execution requirements.​

05

Field Execution

Our team conducts underwater methane detection surveys using the AquaMethane sensor deployed on a tethered ROV from a suitable workboat.

  • Follow the designated pipeline alignment during offshore operations.

  • Conduct continuous dissolved methane measurements along the pipeline corridor.

  • Record GPS positioning, timestamps and sensor diagnostics.

  • Monitor the pipeline corridor visually using onboard ROV cameras, where applicable.

  • Survey the pipeline route in both directions.

07

Reporting & Data Delivery

Survey results are compiled into a comprehensive report with measurement data, mapped anomalies and relevant inspection findings.

  • Provide an executive summary and survey methodology.

  • Include the operational log and methane concentration profiles.

  • Provide GPS-referenced measurement data in suitable GIS formats.

  • Identify and map suspected leak locations.

  • Include tables of detected methane anomalies.

  • Provide recommendations for follow-up inspections, where required.

  • Deliver the final PDF report with maps and figures.

02

Tailored Proposal

We develop a survey approach based on your requirements and the inspection scope.

  • Recommend the appropriate survey approach.

  • Define the proposed scope and methodology.

  • Establish the project schedule and deliverables.

  • Present the proposal for review and approval.

04

Campaign Planning & Data Preparation

We prepare the pipeline route information, survey equipment and operational requirements for the underwater inspection.

  • Review available pipeline route information and coordinates.

  • Prepare the AquaMethane sensor and tethered ROV.

  • Arrange navigation, positioning and data acquisition equipment.

  • Coordinate vessel and offshore survey requirements.

06

Quality Assurance & Completeness Review

Collected survey data is processed and reviewed to identify methane anomalies and assess the significance of suspected leak areas.

  • Perform quality control of measurement data.

  • Synchronise methane measurements with GPS positions.

  • Identify methane anomalies and suspected leak areas.

  • Assess anomaly significance.

  • Prepare GIS-compatible datasets.

Inspection Report

Documented findings, relevant inspection information and applicable limitations.

Coverage & Follow-Up Information

Available coverage details, identified gaps and relevant follow-up information.

Survey Results

Relevant survey outputs and coverage information, where applicable.

Additional Analysis

Additional analysis or quantified results, where supported by the product and agreed scope.

Measurement Data

Available measurement data and relevant supporting information.

See the Product in Action

Explore More with SensorX

2_edited.jpg

AquaMethane

An underwater methane sensor that uses TDLAS technology to measure dissolved methane directly in water and detect potential underwater methane anomalies.

Find the Right Solution for Your Needs

Explore SensorX products and inspection services for natural gas leak detection. Whether you're looking for detection technology or expert survey services, our team can help you identify the right approach for your requirements.

bottom of page