Inline Inspection Services

Corrpro has experience providing integrity related services to both midstream and hydrocarbon companies across North America.

With hundreds of thousands of miles of inline pipeline inspection and pig tracking experience, Corrpro's operational expertise ensures the successful preparation, planning and implementation of internal inspection programs for pipelines transporting both gas and liquid materials.

Corrpro's pipeline maintenance personnel have vast experience coordinating various operation and maintenance programs related to the integrity management of your pipeline system. Whether it is the provision of a suitably qualified and experienced pipeline integrity coordinator, maintenance pigging crew or a full inline inspection (ILI) tracking crew, we have the resources to provide you with solutions for your inline inspection challenges.

We have worked diligently over the years to create, implement and continually improve our comprehensive safety, quality and technician training programs. Our knowledgeable team works closely with all project stakeholders to provide timely, safe and cost-effective solutions that meet or exceed customer expectations. In addition, our field-based programs are capably managed from a safety, environmental, regulatory compliance and risk mitigation perspective.

We take pride in our ability to provide timely and accurate inline tool run tracking support–a key component to the success of an in-line inspection program. Tool tracking and reporting for a variety of pigging applications including cleaning, inline inspection, line purges, line-fills and product batching are our specialties.

Our experienced Corrpro technicians will work with customer operations representatives to ensure that the passage data from all required AGM sites have been captured for each respective run. In situations of limited or remote access, all Corrpro technicians have been trained in the safe operation of ATVs and snowmobiles to ensure that tracking of the tool is not negatively impacted by site access challenges.

Our strategy for effective tracking is based on utilization of the latest in digital aboveground monitoring devices supplemented with an appropriately sized crew of technicians in the field. These devices can be pre-deployed up to two weeks ahead of the inspection tool run and are satellite linked to provide instant updates to our technicians with regards to passage times, GPS locations and tool speeds. These monitoring devices not only ensure the accurate capture of all required passage data, but greatly increase our tracking efficiency resulting in a more cost-effective solution for our customers.

When all the required passage data has been collected, Corrpro will generate a comprehensive client report complete with run data, velocity plots, AGM maps, AGM GPS coordinates (complete with site sketches), AGM survey report (when completed by Corrpro) and any recommendations Corrpro has identified to increase the efficiency of future inspection tool runs.

Aboveground markers (AGMs) are surveyed locations that are utilized for placement of equipment to record the passage of the inline inspection tool. Corrpro can support your inline inspection projects by performing AGM surveys. Using the latest in GPS and surveying technology, our experienced field technicians can determine the optimal location for AGM sites to meet all requirements for the inspection runs being performed.

If your company already has preexisting AGM sites from previous inline inspection runs, Corrpro technicians can reestablish these existing sites. Corrpro can also provide recommendations and survey support for optimizing the number of AGM locations and possible site relocations due to poor AGM site accessibility, a change in the condition of the site or a change in planned tool velocity. The objective is always to provide the most cost-effective solution for your inspection run. We also coordinate with the smart tool vendor to determine when and where AGMs should be placed, including hard to reach areas where pre-set (remote-controlled) AGMs can be utilized.

Once all the AGM sites have been identified and surveyed, a detailed AGM survey report is generated for the customer. The survey points and the time stamp of the tool passage are cross referenced with the odometer and inertial mapping unit (IMU) on the smart tool in the pipeline to provide a higher degree of accuracy in the location of anomalies or defects in your pipeline.

Check out the video to the right to learn more about our GIS capabilities!

Your pipeline operations personnel are trained and experienced in managing the day-to-day operation of the pipeline system, but may not have the experience to cost-effectively plan and execute an inline inspection program. Our ILI project managers have participated in hundreds of pigging and smart tool runs and understand the requirements and details for conducting a safe, well documented and cost-effective ILI tool run program.

Our inline inspection project managers will provide you with the planning, acquisition and management of all of the in-house or contracted resources involved in the tool run and are responsible for the effective communication with pipeline operations and control personnel to conduct a safe and cost-effective inline inspection program.


Pipeline Tool Run Feasibility Assessment

All pipeline companies are required to inspect their pipelines at regular intervals. However, many older pipelines were not designed or constructed with appropriate facilities to allow inline inspection and the passage of inline tools. Station or plant piping may have diameter reductions, tight bends in the pipe or not be configured with launching and receiving trap fittings.

Corrpro has the in-house resources with the requisite pipeline integrity experience and years of planning and tracking pigging programs for all types of pipelines. Corrpro project managers can provide a plan to successfully internally inspect and pig your pipeline. Corrpro can assess the pipeline system and compile a design or plan to provide any additional facilities, fittings or equipment on the pipeline (launching and receiving traps) and recommend the required execution plan to complete the internal inspection program.

Pre-Inspection Pipeline Internal Cleaning Coordination

  • The inside of the pipeline section must be relatively clean prior to undertaking a high resolution or smart tool run program. Our project managers can work with your operations personnel to plan and execute pipeline cleaning run as part of the detailed preparation required to have a successful smart tool run.
  • Detailed preparation is critical to avoid having to rerun a high resolution tool, due to fouled sensors on the tool. Reruns are expensive, due mainly to the cost of re-deployment of the specialized crews and equipment and the potential costs of disrupting the flow of product through the pipeline.
  • There are many options available to internally clean your pipeline. Our experience allows us to knowledgeably select the cleaning option that will be most cost-effective for your pipeline system. We have worked with a number of cleaning tool suppliers and chemical vendors to select the right cleaning methodology for the customer’s pipeline.
  • An effective pre-inspection cleaning program should include the running of a pipeline caliper tool to determine if there are any dents, bends or ovality issues that could potentially damage a smart tool. The caliper not only detects anomalies but enables the user to determine the location and severity of the unwanted diameter reduction.
  • Corrpro technicians have experience coordinating the activities related to pipeline valve operation, launching and receiving of pigs and handling volumes of wax and other deleterious material that tends to land in receiving traps.
  • Pipelines with heavy oil throughput will typically require a regular pig cleaning or dewatering program to maintain efficient operation and prevent the buildup of contaminants and biological agents in your pipeline.
  • Corrpro technicians can plan, organize and execute any cleaning, chemical treatments, de-waxing or inhibitor runs that require significant pigging experience.

Corrpro's project managers have experience planning and coordinating linefill and purge programs for liquids and gas operations. They make special considerations to ensure a safe and cost-effective execution of these types of tool run programs.

  • Key considerations for liquid pipeline linefill programs include:
    • Compliance with project regulatory and stakeholder requirements
    • Linefill operation timing
    • Control of the speed and integrity of the gas-to-gas or gas-to-liquid interface
    • Maintenance of an inert atmosphere at the gas-to-liquid interface
    • Management of the venting and bypass volumes at the receipt end of the pipeline
    • Flooding of intermediate station piping
  • Key considerations for pipeline purging programs include: 
    • Compliance with regulatory and stakeholder requirements
    • Control of gas-to-gas or liquid-to-gas interface velocity
    • Management of injection of purge medium (typically inert) 
    • Management of receipt vessels and/or connected systems capacity

Corrpro Waterworks

7000 Hollister St B
Houston, TX 77040


Asset Integrity Management

Aegion provides Asset Integrity Management services for the world's pipeline systems.