What is Pipeline Pigging?

Pipeline pigging is a maintenance practice used in cleaning, inspection and maintenance of pipelines. It originated in the oil and gas industry, but its benefits have led to widespread adoption across many other sectors including chemical, petrochemical, food and beverage, pharmaceutical, water, wastewater and desalination. Pigging helps improve efficiency, extend asset life and safeguard operations.

How Pigging Works

Pigging involves the use of a tool commonly known as a ‘pig’ or ‘scraper’. The pig is inserted into the pipeline at the launcher and propelled through the line, usually by the flow of product (such as oil, gas or water), until it reaches the receiver at the other end. During its journey, the pig carries out its designated function – cleaning, inspection or separation.

Why Pigging is Necessary

Pipelines require cleaning for a variety of reasons, often linked to the lifecycle stage of the asset: construction, hydro-testing, production and transportation, modification and ultimately decommissioning. Pipeline cleaning ensures maximum return on capital investment and minimal production outages.

With correct design, pigging can deliver seamless cleaning and zero downtime. Each pipeline is unique, and the following considerations apply:

Selecting the correct tool keeps the pipeline efficient and extends its lifespan by preventing corrosion
The cost of a cleaning tool is minimal compared with the overall pipeline investment it protects
Incorrect tool selection can result in serious operational issues

Types of Pipeline Pigs

There are many different types of pigs, each designed for a specific purpose. Broadly, these include:

Cleaning Pigs (e.g. foam pigs, cup pigs, disc pigs, bidirectional pigs, dual and multi-diameter pigs, articulated pigs, magnetic pigs) – used to remove debris and deposits to maintain flow.
Inspection Pigs – sometimes called “intelligent pigs”, fitted with sensors to monitor pipeline condition.
SMART Pigs – advanced tools that provide real-time data and highly accurate condition reports, described in more detail below.

SMART Pigging Solutions by iNPIPE PRODUCTS™

Beyond traditional cleaning and inspection pigs, iNPIPE PRODUCTS™ offers a suite of SMART pigging technologies that deliver real-time insight into pipeline condition. These solutions enable operators to make better decisions, improve safety and reduce costs.

Our SMART pigging technologies include:

Phoenix™ Debris Mapping Tool – generates highly accurate internal condition reports within minutes, mapping debris in real time- a modular, fully customisable system available as metal-bodied cup pig or as a flexible foam pig for challenging geometries and tighter bends, the tool is scalable for pipelines ranging from 600mm to 3,500mm in diameter.
Camera Pig – captures visual evidence of pipeline condition using integrated cameras, identifying blockages, corrosion and damage.

Together, these innovations set new standards in efficiency, safety and reliability across the oil & gas, energy, water and industrial sectors.

Benefits Across Sectors

Pigging provides multiple benefits across industries, including:

Efficiency: Pigging improves pipeline efficiency by removing debris, buildup, and product residues.
Cost Savings: By recovering product and reducing waste, pigging can lead to significant cost savings.
Safety and Maintenance: Regular pigging helps in early detection of pipeline issues, thereby enhancing safety and reducing maintenance costs.
Environmental Impact: Reducing product waste and improving pipeline integrity has positive environmental impacts, reducing spills and contamination.
Extended Life – ensuring the long-term integrity of pipeline infrastructure.

Frequently Asked Questions

What does a pipeline pig do?
A pig is inserted into a pipeline to clean, inspect or separate products, helping operators maintain safe and efficient operations.

What’s the difference between cleaning and inspection pigs?
Cleaning pigs remove deposits and debris, while inspection pigs (including SMART pigs) use sensors or cameras to assess pipeline condition.

How often should pigging be carried out?
The frequency depends on the product and condition of the pipeline, but regular pigging is essential to prevent damage and extend asset life.

Can pigging be used in all industries?
Yes. While pigging originated in the oil and gas sector, it is now widely used in water, chemical, petrochemical, food and beverage, and pharmaceutical industries to maintain efficiency and product quality.

What are the risks of not pigging a pipeline?
Without regular pigging, pipelines can suffer from reduced flow, corrosion, contamination or blockages, which can lead to costly downtime, safety issues or environmental incidents.

Our Expertise

With more than 40 years of experience, iNPIPE PRODUCTS™ is a global leader in pigging solutions. Our expertise spans traditional cleaning pigs and advanced SMART technologies such as Phoenix Debris Mapping and Camera Pig. We design and deliver bespoke solutions for operators worldwide, supporting safer, more efficient and sustainable pipeline operations.

Click here to take a look at our comprehensive types of pipelines pigs designed and manufactured to carry out their respective pigging function.