Preliminary preparation and performance testing of composite oil product DRA

Current oil product drag reducing agents (DRAs) composed of high molecular polymers are poor in shear resistance capacity. In order to solve this problem, a new type of composite oil product DRA was proposed in this paper. Firstly, nano-particles were combined with polymer DRA. Then, the performance of inorganic nano-particles (SiO₂, montmorillonite, V₂O₅, CaCO₃ and TiO₂) was modified by using silane coupling agents. And finally, the modified nano-particles were combined with self-made interface compatible agent and polymer α-alkene together to prepare the new DRA. It is shown from the loop drag reduction testing that the DRA with nano-SiO₂ and nano-montmorillonite is the best in shear resistance capacity. Compared with traditional DRAs, this composite oil product DRA is 200% higher in shear resistance capacity and better in drag reduction and transportation boosting performance.