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Pigging

ARTICLE 09/01/2023

Non-Intrusive Pig Signallers: Cutting Costs, Emissions, and Environmental Risks

By their nature, non-intrusive pig signallers do not require a nozzle hole for any type of welded fitting, whether it be a 'counter flange' or a direct fitting like a threadolet. They are simply secured to the pipeline. Simultaneously, this approach saves costs on welding, non-destructive testing, and eliminates the risk associated with potential hydrocarbon leak paths.

ARTICLE 05/16/2023

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.

ARTICLE 04/26/2023

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.

ARTICLE 04/21/2023

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.

ARTICLE 02/24/2023

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.).

ARTICLE 08/02/2021

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.