Synthesis of Manganese Dioxide (MnO₂) Nanostructures Using a Modified Chemical Method as a Fluid Loss Control Additive for Water-Based Drilling Fluids (WBDF). (2026). JOURNAL OF UNIVERSITY OF BABYLON for Pure and Applied Sciences, 34(1), 89-103. https://doi.org/10.29196/jubpas.v34i1.6367