Browse

Percussive-rotary drilling remains the preferred method for penetrating hard abrasive rocks (UCS > 150–350 MPa) in mining, exploration, and geotechnical applications. Tungsten carbide (WC-Co) inserts, with their exceptional hardness and abrasion resistance, serve as the primary cutting elements, enabling efficient rock fracturing through combined impact and shear. This study examines tool performance, wear mechanisms (abrasive grooving, fatigue spalling, binder erosion), and optimization strategies including car...

Sand production poses a major challenge in the development of weakly consolidated and unconsolidated sandstone reservoirs, leading to equipment erosion, wellbore plugging, reduced productivity, and increased operational costs. Downhole sand control filters, primarily deployed as mechanical screens, are essential to retain formation sand while permitting hydrocarbon flow with minimal impairment. This review synthesizes established industry practices, laboratory sand retention test results, and field performance dat...