How the Pipeline Pigging Process Works
Pipeline pigging sounds complicated—but it doesn’t have to be. At its core, it’s simply moving a tool through your pipeline to clean it, inspect it, or move product from point A to point B.
The challenge isn’t understanding the process—it’s choosing the right tool and running it correctly. That’s where most problems happen.
If you’re not sure what your line needs, don’t overthink it. We’ll walk you through it and help you get it right the first time. 800-752-1628
The challenge isn’t understanding the process—it’s choosing the right tool and running it correctly. That’s where most problems happen.
Pipeline Pigging Explained: Process, Types & Applications
Pipeline pigging is the process of running a tool through a pipeline to clean, inspect, or separate product. It plays a critical role in maintaining flow efficiency and preparing lines for inline inspection (ILI).
What Is Pipeline Pigging?
Pipeline pigging is used to clean, inspect, and maintain pipelines by sending a device (pig) through the line.
- Cleans pipelines by removing debris and buildup
- Separates products in batching operations
- Prepares pipelines for inline inspection (ILI)
- Improves flow efficiency and reduces risk
Types of Pipeline Pigs Used in Pigging Operations
Each type of pipeline pig is designed for a specific function.
Choosing the right one depends on pipeline conditions and the objective of the run.
Common pipeline pig types include:
- Cleaning pigs – Remove debris, wax, and buildup
- Batching pigs – Separate different products in the line
- Inspection pigs (Inline Inspection Tools) – Collect pipeline integrity data
- Gauge pigs – Identify restrictions or deformation
Compare pig types:
Pipeline Cleaning Pig Comparison Guide
Explore cleaning pigs:
Pipeline Cleaning Pigs
To better understand the differences between pipeline pig types, including cleaning pigs, foam pigs, and specialty designs, visit our Pipeline Cleaning Pig Types page.
Not sure which pig your line needs? Don’t overthink it. We’ll walk you through it and help you get it right the first time. 800-752-1628
Why Pipeline Pigging Is Important
Pipeline pigging directly impacts inspection accuracy, flow efficiency, and long-term pipeline integrity.
Pigging programs help:
• Remove debris and buildup (choosing the right pig for wax buildup) ((
• Prevent corrosion and blockages
• Improve flow efficiency
• Prepare pipelines for inline inspection
• Maintain regulatory compliance
Without proper cleaning and preparation, debris inside the pipeline can interfere with inspection tools and reduce the accuracy of inspection results.
Choosing the Right Pipeline Pig
Choosing the correct pig is critical to the success of any pigging operation.
The wrong pig can:
- Miss debris or buildup
- Become stuck in the pipeline
- Reduce inspection accuracy
- Increase operational costs
Choosing the right pipeline pig depends on:
- Pipeline diameter and geometry
- Product type
- Type of debris or buildup
- Cleaning or inspection objectives
At Enduro Pipeline Services, we design and manufacture pigs for a wide range of pipeline sizes and applications — from standard cleaning runs to complex pipeline conditions.
Compare pipeline pig types:
Pipeline Cleaning Pig Comparison Guide
Not sure what you need? Don’t overthink it — request a
Quick Quote
and our team will help you choose the right pig for your pipeline.
How Does a Pipeline Pig Work?
A pipeline pig travels through the line under pressure while maintaining contact with the pipe wall. As it moves, it can remove debris, push out liquids, separate products, or prepare the pipeline for inspection. The exact configuration depends on what the operator is trying to accomplish and on the conditions inside the pipeline. That is why pig design matters. A pig that works well in one line may not be the right choice for another.
Pipeline Pigging Process Steps:
The pigging process typically follows these key steps:
1. Pipeline Evaluation
Before pigging begins, operators evaluate:
- Pipeline diameter and length
- Flow conditions and pressure
- Type of debris or buildup
2. Pig Selection
The right pig is selected based on:
- Cleaning requirements
- Pipeline geometry
- Inspection goals
Choosing the wrong pig can reduce effectiveness and increase costs.
3. Pig Launching
The pig is inserted into the pipeline through a launcher and driven forward by product flow or gas pressure. Pipeline Pig Trays are used to handle pipeline pigs safely and efficiently.
4. Pig Tracking
Tracking equipment is used to monitor the pig’s location and ensure it moves through the pipeline as expected.
5. Cleaning or Inspection Run
As the pig travels through the pipeline:
- Debris is removed
- Liquids are displaced
- The pipe wall is cleaned or inspected
6. Pig Receiving
The pig is captured at the receiving station and removed from the pipeline.
When Should You Use Pipeline Pigging?
- Before inline inspection (ILI)
- When flow efficiency decreases
- When debris or buildup is present
- After construction or maintenance
Pipeline Pigging and Inline Inspection
One of the most important uses of pigging is preparing pipelines for inline inspection tools (ILI).
Proper pipeline cleaning ensures inspection sensors maintain proper contact with the pipe wall, improving data quality and reducing the risk of missed anomalies.
Cleaning Pigs Used in Pipeline Pigging
Enduro Pipeline Services manufactures a wide range of pipeline cleaning pigs designed to support pigging operations and pipeline inspection preparation. Selecting the right pipeline cleaning pig is critical to achieving effective cleaning and preparing pipelines for inspection.
- Designed for reliable performance in pipelines that include wall changes, fittings, and other challenging features.
-Rugged steel-bodied pigs engineered for reliable cleaning, batching, and debris removal.
•Dual Diameter Cleaning Pigs
-Engineered for pipelines with changing diameters or multi-diameter segments.
-Durable pigs used for sealing and cleaning in a wide range of applications.
-Lightweight pigs used for light cleaning and product displacement.
You can also compare these pig types in our
Cleaning Pig Comparison Guide.
Or learn more about the importance of keeping your cleaning pig maintained with
rebuild kits here.
PIPELINE Cleaning Pig Comparison
Pipeline pigging operations use different pig designs depending on debris type, pipeline configuration, and operational objectives. The table below compares the most common pipeline cleaning pig types used in pigging operations. You can also learn more about our rebuild kits for select tools here.
Pig Type
Best Used For
Pipeline Conditions
Typical Applications
Aggressive cleaning and debris removal
Cleaning programs, debris removal, maintenance pigging
Product batching, debris removal, routine pigging
Cleaning across diameter changes, ILI preparation
Cleaning, batching, debris removal
Light cleaning and drying operations
Pipelines with fittings, wall changes, or heavy debris
Cleaning and batching operations
Pipelines with diameter transitions
Pipelines requiring bidirectional travel
Pipelines requiring flexible sealing and durability
Short runs or pipelines with minimal debris
Cleaning programs, debris removal, maintenance pigging
Standard pipeline cleaning and batching programs
Cleaning across diameter changes, ILI preparation
Fill and displacement operations, hydrotesting
Pipelines requiring flexible sealing and durability
Short runs or pipelines with minimal debris
Planning a pigging run? Talk to our team today at
800-752-1628. Or complete our
quick quote, and one of our experts will contact you.
Don't stress over not knowing exactly which cleaning pig you need for your pipeline. We'll help you figure it out.
Enduro Pipeline Services designs and supports pipeline pigging solutions from our Tulsa, Oklahoma headquarters.
Pipeline Pigging Guide (Free Download).
Looking for a quick reference? Download our Pipeline Pigging Guide covering process, pig types, and real-world best practices—built from over 38 years of field experience.
Frequently Asked Questions About Pipeline Pigging
These are the most common pipeline pigging questions operators ask when planning cleaning and inspection runs.
What is pipeline pigging?
Pipeline pigging is the process of using devices called pigs to clean, inspect, or maintain pipelines without stopping flow.
How does pipeline pigging work?
A pig is inserted into the pipeline through a launcher and pushed through the line by product flow or gas pressure. As it travels, it performs tasks like cleaning buildup, separating batches, or collecting inspection data before being received at the end of the line.
What are the types of pipeline pigs?
- Cleaning pigs (remove debris and buildup)
- Batching pigs (separate products)
- Foam pigs (light-duty cleaning and drying)
- Urethane pigs (durable for routine operations)
- Intelligent pigs (ILI tools used for inspection and data collection)
Why is pigging important before inline inspection (ILI)?
Proper cleaning ensures accurate inspection data. Debris or buildup can interfere with sensors, leading to poor data quality or the need for costly re-runs. A clean pipeline improves tool performance and confidence in results.