casing accessories of drilling equipment in oilfie

casing accessories of drilling equipment in oilfield Inordertomeettheneedofmodernpetroleumdrillingtechnology,newmudpimpfittingsweredecelopedby Qingdaozhifengpetroleumequipmentco.,ltdthroughcooperationwithchinapetroleumuniversity(huadong)whichhavegoodpropertiesofhightemperature,highpressureresistance,high antifrictionandantisulfurcorrosion. OurcompanyistheoriginalfactoryinQingdaoPetroleumMachineryFactory,July2007 throughtheISO9001(REGISRATIONNO.0885) internationalqualitysystem certification, andin2008passed Americanpetroleuminstitutequalitymanagementsystemof preferenceAPISPECQ1(REGISRATIONNO.Q1-0637) andISO/TS29001(REGISRATIONNO.TS-0469)authentication. valve assembly Brand name Specification Main material Valve assembly F-1000/800 20CrMnMo/ 20CrMnTi F-1300/1600 F-1600HL F-2200HL 3NB-1000C 3NB-1300C High pressure valve assembly F-1600HL 20Cr2Ni4 F-2200HL float collar and float shoe Specification 5 5 1/2 7 9 5/8 10 3/4 11 3/4 13 3/8 OD(mm) 141 154 195 20 299 324 356 Body ID (mm) 108 120 155 221 250 276 318 length Cement-filled 450-550 550-700 700-800 None cement-filled I II 300-500 Reverse pressure (Mpa) 30 35 15 10 Positive pressure (Mpa) 20 25 10 10 Mini. Dia. flow Cross-section 50-60 60-70 Screw thread Inside thread Long round Short round Outside thread Long round, short round Short round bow spring centralizer specification mm (in) well diameter Mm (in) wide of spring Mm thickness Mm number mm 114(4 1/2) 152,159,200 (6, 6 1/4, 7 7/8) 30 4 5 127 (5) 171,200 (6 3/4,7 7/8) 30 4 5 140(5 1/2) 200,222,251 (7 7/8,8 3/4,9 7/8) 30 4 6 168 (6 5/8) 222 (8 3/4) 30 4 6 178 (7) 222,251 (8 3/4,9 7/8) 35 4 6 194 (7 5/8) 244,251 (9 5/8,9 7/8) 40 4 6 219 (8 5/8) 311 (12 1/4) 40 4 8 244 (9 5/8) 311 (12 1/4) 40 4 8 273 (10 3/4) 375 (14 3/4) 45 4 10 298 (11 3/4) 394 (15 1/2) 45 4 10 340 (13 3/4) 444 (17 1/2) 50 4 10