Casing scraper is ideal for the removal of dirties which maybe left the inside of casing, such as solid cement, hard wax, various salt crystals or deposits, perforation burrs, irons oxide residents resulted from rusting, so as to make all downhole tools pass through unblocked. At present, casing scraper in many leading oilfields of China has becomes an necessay tool.Type Mandrel O.D. (mm) Max. O.D of blade extension (mm) Min O.D of blade extension (mm) Thread type Total length (mm) GX114 92 111 92 2 3/8 REG 880 GX127 103 121 103 2 3/8REG 880 GX140 110 133 115 NC31 1000 GX146 110 139 121 NC31 1000 GX168 130 162 137 3 1/2REG 1150 GX178 136 170 146 3 1/2REG 1150 GX194 136 186 162 3 1/2REG 1200 GX219 142 212 185 4 1/2REG 1400 GX245 200 238 210 4 1/2REG 1500 GX273 228 268 237 6 5/8REG 1500
