Seamless Casing
Seamless Casing Spec. Outside diameter Wall thickness Type of end finish Ⅰ Ⅱ mm inch mm Steel grade H40 J55 K55 M65 L80 C95 N80 1,Q FT80T FT80TT C90 T95 FT90T(TT) FT95T(TT) P110 FT110T FT110TT 4-1/2 9.50 114.30 0.205 5.21 PS PS PS - - - - 4-1/2 10.50 114.30 0.224 5.69 - PSB PSB - - - - 4-1/2 11.60 114.30 0.250 6.35 - PSLB PLB PLB PLB PLB PLB 4-1/2 13.50 114.30 0.290 7.37 - - PLB PLB PLB PLB PLB 4-1/2 15.10 114.30 0.337 8.56 - - - - - - PLB 5 11.50 127.00 0.220 5.59 - PS PS - - - - 5 13.00 127.00 0.253 6.43 - PSLB PSLB - - - - 5 15.00 127.00 0.296 7.52 - PSLBE PLB PLBE PLBE PLBE - 5 18.00 127.00 0.362 9.19 - - PLB PLBE PLBE PLBE PLBE 5 21.40 127.00 0.437 11.10 - - PLB PLB PLB PLB PLB 5 23.20 127.00 0.478 12.14 - - - PLB PLB PLB PLB 5 24.10 127.00 0.500 12.70 - - - PLB PLB PLB PLB 5-1/2 14.00 139.70 0.244 6.20 PS PS PS - - - - 5-1/2 15.50 139.70 0.275 6.98 - PSLBE PSLB - - - - 5-1/2 17.00 139.70 0.304 7.72 - PSLBE PLB PLBE PLBE PLBE PLBE 5-1/2 20.00 139.70 0.361 9.17 - - PLB PLBE PLBE PLBE PLBE 5-1/2 23.00 139.70 0.415 10.54 - - PLB PLBE PLBE PLBE PLBE 5-1/2 26.80 139.70 0.500 12.70 - - - - - P - 5-1/2 29.70 139.70 0.562 14.27 - - - - - P - 5-1/2 32.60 139.70 0.625 15.88 - - - - - P - 5-1/2 35.30 139.70 0.687 17.45 - - - - - P - 5-1/2 38.00 139.70 0.750 19.05 - - - - - P - 5-1/2 40.50 139.70 0.812 20.62 - - - - - P - 5-1/2 43.10 139.70 0.875 22.22 - - - - - P - Material 25Mn2,30Mn2,37Mn5,34Mn6,25Mn2V,33Mn2V,(25～32)CrMo, (26～29) CrMo44 etc.
Fastube seamless casing achieves great anti-collapsingcapacity as the casing blank is manufactured by advancedAccu-Roll precision rolling machine. The use of ourpatented jigs and fixtures such as pipe end inner and outer support device,toolbar strengthening device also helps improve pipe clamping rigidity, reduceclamping distortion and eliminate cutting vibration, contributing to betterthread quality.
Applications
Fastube seamless casing is widely used in oilfield exploitation and gas transportationapplications. It is assembled and inserted into a recently drilled section of aborehole and held into place with cement, which can prevent wellbore from separating stratum and ensure drilling fluid to continue drilling deeper,thus facilitating the drilling process.
By application, casing can be divided into several types, for example
1. Surface casing: It is installed with a casinghead installed on the top to hang and support subsequent casing at each zone. Surfacecasing is designed to isolate freshwater zones so that they will not becontaminated by drilling fluid.
2. Intermediate casing: It is to separate different zones that have differentpressures, so as to avoid potential for a blowout.
3. Production casing: It is used to protect production zone, and provide tunnelfor transporting oil and gas.
Technical Specifications
Fastube is a
