Swarf Handling System
The Romar Solution
The ROMAR Swarf Handling System has been developed in-house by our own engineering staff and incorporates the cumulative knowledge, experience and operational expertise amassed over several years as a specialist provider of magnetic separation technologies to the oil and gas industry. The system has been designed with efficient metal particle separation and manual handling safety as the main considerations in order to provide a safe, highly efficient solution for the processing of liquids or slurries contaminated with metallic particles. The ROMAR Swarf Handling System involves a three stage swarf separation and recovery process, two of which involve the use of Romar’s patented magnetic separation technology to ensure the effective removal of metallic contaminants from the drill fluid. Our systems are capable of operating at flow rates of up to 1,500gpm while recovering debris at up to 2,000 Kg/hr. We will not limit milling performance, allowing the full optimisation of milling parameters. Thus saving our clients rig days and considerable expense.
Larger particles of metallic and non-metallic waste are removed as the drilling fluid passes through the optional ‘scalping’ unit attachment prior to entering the flow trench of the ‘magnoveyor’ unit. The scalping unit directs the well fluid through a coarse ‘grill’ located within an acutely angled section of large bore pipe at the top of the unit. The sudden change in well flow direction at the acute angle, accompanied by the physical interference of the metal grill causes the larger particles of waste (non-metallic as well as metallic) to fall out of suspension and drop down to a collection chute prior to the drilling fluid being passed through to the ‘Magnoveyor’ unit for further processing.
Chain Link Magnoveyor
The patented ‘Chain Link Magnoveyor’ separation and recovery unit lies at the heart of Romar’s Swarf Handling System on surface. The ‘Magnoveyor’ processing unit comprises a vertical array of pipe ‘loops’ arranged side by side in such a way as to allow the lower part of each loop to be lowered into the flow of well fluid so that it sits partially submerged. Each pipe loop contains a ‘chain’ of high powered magnets which attract the metallic particles contained within the well fluid to the outside of the pipe. Within each of the pipes the chain of magnets constantly circulates around each loop causing the metallic particles on the outside of the pipe to be transported up along the outside of the pipe until eventually released into a collection chute and discharged into a skip below. The chain of magnets also incorporates a series of ‘blank’ non-magnetic sections within each chain which allows the collected swarf particles to release and fall into the collection chute as the chain of magnets enters the enclosed drive chamber at the top of the loop. The collected metallic particles on the outside of the pipe housing are prevented from travelling further around the pipe loop as the chain within the pipe loop arrives at the drive enclosure face plate at the top of the unit. As the magnet section enters the drive enclosure housing and the subsequent non-magnetic section of the chain arrives, the pipe loop at this point is no longer magnetised and the metallic particles release from the outside of the pipe and fall into the collection chute below.
After passing through the ‘magnoveyer’ processing stage the drilling fluid is subjected to a final ‘polish’ as it passes through an EZ-Clean grid of high strength ditch magnets in order to ensure the complete removal of metallic swarf fragments prior to the mud being passed through to the rig shaker system. The EZ-Clean system is a high strength magnetic separation system comprising an array of magnetic rods that sit vertically within a frame which is positioned across the flowline. The magnetic rods within each frame form an interconnecting and uninterrupted magnetic field across the entire flow area of the fluid path, thereby creating a highly effective metal particle separation system.
Optional Flow Head Diverter
A key element in maximizing the performance of any swarf handling system is ensuring metallic particles remain in suspension up to the point that they enter the separation process. This rather obvious statement of fact highlights one of the key performance differentiators of the ROMAR Swarf Handling System. Immediately prior to its arrival at surface, the drilling fluid is channeled through the rig’s diverter system and as the available flow area increases the well fluid velocity decreases causing heavier particles to fall out of suspension, leading to the accumulation of debris in the void immediately below the drill floor. ROMAR’s patented ‘Flow Head Diverter’ system addresses this problem by ensuring that a continuous, uniform conduit to surface is established and fluid flow velocities are maintained whilst the drill fluid is directed towards the separation processing equipment on surface.