Nano-Film-Forming Plugging Drilling Fluid and Bridging Cross-Linking Plugging Agent Are Used to Strengthen Wellbores in Complex Formations
Song Deng, Yahong Huang, Xuhui Hu, Hao Wang, Huijun Zhao, Jialei He
Abstract
particles. Then, the performance evaluation of the composite system is carried out by the high-temperature and high-pressure plugging simulation evaluation device. The results show that the bridging and cross-linking plugging agent can effectively block the 1-3 mm crack, the pressure-bearing capacity is greater than 10 MPa, and the anti-liquid return capacity is greater than 4 MPa. The nano-film-forming plugging drilling fluid has lower fluid loss and better rheological properties.
Topics & Concepts
Lost circulationDrilling fluidUnderbalanced drillingPetroleum engineeringMaterials scienceRheologyDrillingSlurryBridging (networking)Spark plugWellboreHigh pressureComposite materialGeologyMechanical engineeringEngineeringMetallurgyEngineering physicsComputer scienceComputer networkDrilling and Well EngineeringTunneling and Rock MechanicsHydraulic Fracturing and Reservoir Analysis