A wax inhibition solution to problematic fields: A chemical remediation process

Wax crystallization and deposition during production can lead to severe pip eline and flow line restrictions. Over time, the build-up of wax will reduc e the internal diameter and eventually block the line or well. Remediation is normally performed by mechanical pigging or through solvent washes or ho t oiling. All have their advantages and limitations. Wax inhibitors/dispers ants and anti-sticking agents are an effective solution to remediate the de position problem. These chemicals can act as either crystal modifiers, or p roducts that reduce the rate of wax build-up on pipe walls. A novel and gen eric wax dispersant and anti-sticking agent has been developed and tested, which has proven to be effective at retarding the deposition mechanism sign ificantly. The chemical is a synergistic blend of ionic surfactants, which has an ability to absorb onto bare surfaces of tubings and equipment making them oleophobic. The unique properties of the chemical in preventing waxes from adhering to surfaces and success of the experimental findings will be described. Interactions of the product with wax crystal shape and size wil l be presented, and interference with other chemical additives will be addr essed. Preliminary results suggest that an eight times reduction in wax dep osition can potentially be achieved.