Fabrication and Properties of in Situ Cross-Linked Supramolecular Gel Based on Host-Guest Interaction

Water-cut control is critical to efficient reservoir development. In this investigation, a host-guest inclusion polymer gels system with self-assembly features was constructed stemming from the host-guest recognition mechanism. Subsequently, the elements affecting polymer viscosity were discussed. Eventually, the injectivity and plugging performance of the host-guest inclusion system were measured by core displacement tests. The results indicated that the optimum synthesis temperature of the host polymer and guest polymer were 30 degrees C and 40 degrees C, separately, and the optimum total monomer content should be 20 wt%. The polymer system had excellent thickening properties and shearing resistance resulting from host-guest inclusion interaction and physical hydrophobic association. Meanwhile, it had better plugging performance than host polymer or guest polymer alone. This profile control agent system provides a novel method for settling deep profile control in oilfields. Based on the host-guest recognition mechanism, a host-guest inclusion polymer gel profile control agent with self-assembly characteristics was prepared. Compared with conventional polymer gel systems, the host-guest inclusion polymer system has better temperature resistance, stronger viscosity action and shearing resistance because of the host-guest inclusion interactions and physical hydrophobic association. image