Pigging

An Operator’s Perspective: How to Comply with New US Gas Gathering, ILI Regulations

(P&GJ) —Traditionally, most gas gathering lines were small-diameter, low-pressure systems traversing sparsely populated areas, posing little risk from a business, safety, and environmental perspective. More recently, the volume of gas transported through gathering systems has increased significantly due to the advancements in horizontal drilling and hydraulic fracturing techniques.

Pig Removal: Recovering an Obstruction in Pressurized 48-Inch Pipeline

(P&GJ) —Following the completion of an offshore pipeline isolation project, STATS were asked by the client if they could offer a solution to a problem of an obstruction in their 48-inch gas export pipeline. During routine launching of an inline inspection tool, a slipper tray was accidently carried into the pipeline and lodged in the first pipeline bend, above grade, about 39 meters from the launcher door.

Tech Notes: Unpiggable In-Line Inspection Completed in South America

(P&GJ) — A team of Dexon pipeline engineers recently completed the inspection of a 20-mile (32-km), 3-inch diameter unpiggable or “challenging” underground petrochemical distribution pipeline, running from an onshore processing facility to a port on the South American coast.

New Approach to Digital Pipeline Integrity Management

(P&GJ) — Pigging is an operation that is regularly required by pipeline operators for both cleaning and data collection (intelligent pigging). Managing pigging schedules and risks is a significant challenge to operators/pigging vendors without an intimate knowledge of the pipeline.

Nanoparticles Transform Pipeline Cleaning, Integrity Management

(P&GJ) — Oil, gas, and multi-phase pipelines can be fouled with several types of deposits or internally restrictive debris. The actual type of fouling is dependent upon several factors including: the production fluid characteristics such as hydrocarbon product, water, and gas composition; the presence and composition of common oilfield contaminants, such as hydrogen sulfide, carbon dioxide, mercury, arsenic, zinc, lead, iron, and manganese and operating conditions (e.g., temperature, pressure, pH, flow regimes, etc.).

Proper Cleaning and Storage of Pipeline Pigs

Proper storage and maintenance are important to ensure the optimal performance and condition of urethane pigs.

Using Isolation Plug in Remote Area Pipeline Rerouting Project

A multinational pipeline company in Canada recently contacted STATS Group to provide leak-tight double block isolation of a 24-inch crude oil line that required to be rerouted because of terrain stability issues.

Proper Cleaning and Storage of Pipeline Pigs

Proper storage and maintenance are important to ensure the optimal performance and condition of urethane pigs.

Halliburton Develops Non Intrusive Pipeline Inspection Method for Unpiggable Lines

Halliburton’s technology team have been developing InnerVue non-intrusive diagnostics technology for several years. Advances in computing power and experience gained through numerous data collections in the field have moved the technology to a point where it can now be considered as an alternative for traditional intrusive ILI techniques.

Options for Internal Inspection of Difficult-to-Check Pipelines

Pipelines are essentially cylindrical pressure vessels. Any medium transported must not leak out. Each built to a specific design pressure, they must be operated efficiently and effectively to ensure not just safety and environmental protection but also optimum performance.

Managing Integrity for Subsea Pipelines Without Pigging

The Pipeline and Hazardous Materials Safety Administration estimates that 40% of the world’s pipelines are difficult to pig or are deemed “unpiggable,” which means they cannot be inspected via inline inspection, but their integrity still needs to be maintained.

Overcoming Challenges of Pigging the “Unpiggable”

Accurate measurement and evaluation of the physical condition of oil and gas pipelines is critical to effective integrity management, as well as to the assurance of sustained pipeline safety.

Can Implementing AI Make a Smart Pig Smarter?

A windfall may be looming for pipeline operators who've taken advantage of cheap digital storage to save data from their SCADA systems, smart pigs, smart balls and maintenance.

Russia's Lukoil Suspends Uzbek Gas Exports to China Due to Weak Demand

An official from Russia's Lukoil said in a conference call on Friday the company has suspended gas deliveries to China from its projects in Uzbekistan due to weak demand amid the coronavirus pandemic.

Pigging the Unpiggable: ‘Everything Is Possible’ Through Innovation

Today, estimates vary widely, but experts cite a range of between 30% to 60% of the world’s pipelines that remain unpiggable. Innovation is helping to close the gap.

Correct Pigs, Procedures for Hydrostatic Testing of New Pipelines

Laying a cross-country pipeline is expensive. Many hours of engineering and planning must meet certain standards and regulations and receive federal government approval before starting construction. It costs approximately $100,000 per diameter-inch-mile to build a pipeline in a reasonable lay area. This number can easily triple in marsh lands, hills, mountains and rocky terrain. In those areas it could cost about $20 million to lay 100 miles (161 km) of 20-inch pipe.

Enbridge to Purchase Rio Bravo Pipeline from NextDecade

NextDecade Corporation and Enbridge announced that they have entered into a definitive agreement whereby Enbridge will acquire Rio Bravo Pipeline Company, LLC from NextDecade.

New Pipelines of Latin America

While proven reserves of natural gas in Latin America represent only 4% of global reserves, gas pipeline infrastructure is currently insufficient to meet growing demand.

New Diagnostics Technology Assesses Pipeline Pig Runs

Pipelines can require both scheduled and unplanned cleaning for many reasons, from the maintenance of throughput to preparation for inspections runs. The most common method for removing debris from pipelines is using pigs and scraper tools.

NuStar Completes Pipeline Projects, Begins Moving Volume

NuStar Energy has announced that it has completed and is moving volumes on three key pipeline projects that will significantly expand the partnership's capacity to move Permian crude oil to Corpus Christi for export, and to move refined products into Northern Mexico.

Suncor CEO Sees Increased Political Risk for Keystone XL

Canada's second-largest oil producer, Suncor Energy, believes the political situation in the United States has increased the risks to companies counting on construction of TC Energy Corp's proposed Keystone XL oil pipeline, its chief executive said on Wednesday.

Speed Control Cleaning Pigs Are Multi-Purpose

High-velocity natural gas pipelines pose a challenge to effective cleaning for corrosion mitigation purposes, maintaining throughput efficiency and pre-inline inspection (ILI) cleaning runs.

Case Studies for Intelligent Pigging of Unpiggable’ Offshore Pipelines

Offshore pipelines are often challenging for pigging and inspection. Riser pipes are vulnerable and critical for the asset-owners, especially in the splash zone. Some pipelines end at a manifold (PLEM) or a buoy for loading ships. Sometimes wye-pieces are constructed in the line or different diameters occur.

Preparing for Unpiggable Pipelines

The simple truth is some pipelines may be piggable for certain applications and non-piggable for others.

Transmitter Signal Propagation Issues on Steel Mandrel Pigs

Over the years as a pig tracker, I have noticed that getting a good transmitter signal from a steel mandrel (cleaner type) pig has become increasingly difficult compared to smart pigs.

Michigan Governor Halts Great Lakes Oil Pipeline Tunnel

Michigan Gov. Gretchen Whitmer has ordered state departments and agencies to take no further action on legislation enacted in late 2018 authorizing construction of an oil pipeline tunnel beneath lakes Huron and Michigan. Whitmer made the move after Attorney General Dana Nessel issued an opinion st..

CDI

CDI CDI introduced the SoniTrack XLR, an acoustic geophone pipeline pig tracking system that includes a computer-controlled audio amplifier. This allows an operator to easily listen for pigs moving within a pipeline over several miles. In addition to industry-standard head..

What Everyone Needs to Know About Building Pig Launchers, Receivers

Having been engaged for many years in running pigs, inspecting sites, designing and building pig traps worldwide, we have seen a variety of applications, locations and product types, along with a wide array of designs – some good, some bad.

Preparing Pipelines for Successful In-Line Inspection

Gauge pigs provide insight into some conditions inside the pipe, but not all of them. They’re not intended to measure pipeline cleanliness or indicate if debris has built up to the point that it will impair the inspections tool’s data-gathering capabilities.

Making Simple Smart and Smart Simple: Cost-Effective, Low-Risk Pipeline Inspection

Three brief case studies highlight the challenge, solution and outcome where innovative pigging solutions have been successfully deployed to meet major offshore operator’s requirements.