Build up of petroleum coke on the inner tube surface; coke is formed as a thermally cracked fraction of the hot oil product.
Fouling within process tubes and piping systems compromises flow assurance, production rates and can lead to accelerated corrosion.
Within heat exchange tube systems such fouling can cause overheating which compromises integrity and may lead to catastrophic failure.
The nature and morphology of fouling depends on the product, process conditions and system design. Within crude oil systems it can manifest as petroleum coke (potentially including inorganic material) and as scale within steam generation systems. Historically, a variety of techniques have existed to remove such contamination. Mechanical cleaning, also known widely as pig decoking or pigging, has become the preferred method throughout the industry.
Older techniques such as steam air decoking and hydroblasting have varying degrees of success, depending on the competence of the tooling and personnel skills. There can be adverse side effects such as increased environmental load and potential asset damage.
With some 20 years of world wide experience, Cokebusters have developed, deployed and refined an integrated solution to comprehensively clean such systems.
Our service-led solution involves connecting our Double Pumping Unit machine to the tube/pipeline asset and progressively scraping away layers of coke/scale with incrementally sized mechanical pigs.
Scraper pigs are propelled by pressurised water flow supplied by our Pumping Unit. This operation is managed from the machine’s on-board control room by our personnel. Use of water carries all the debris allowing back to the machine for subsequent filtration and disposal.
The mechanical scraper pigs are built in house to a patented design. There are some 50 different incremental pig sizes, ranging from 1”-12” diameter. We can manufacturer ‘off spec’ to suit particular requirements.
The ability to design and build in house allows Cokebusters to be in control of its own supply chain. It also means we can respond quickly to customisation requests.
Commonly referred to as a DPU – a purpose built trailer, or containerised unit, which contains all the equipment and functionality to connect and deploy mechanical ‘scraper’ pigs. The unit has four basic elements:
All our pumping units are designed, built and maintained in house.
On board two stage filtration can separate particles down to 750µm.
Our on board InnerVision™ system is used to monitor the cleaning performance using various process signatures.
Cokebusters’ DPU are strategically located in the regions we serve.
Cokebusters are aware of the negative impacts that the daily running of the business can have on the environment. Our aim is to prevent and minimise this impact, whilst continuously creating positive improvements to ensure a positive effect on our local environment and globally.DOWNLOAD POLICY