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1. PurposeUsed in oil well drilling.2. TypeAccording to T6194 SY / 96 "oil casing" points short thread casing and couplings and long thread casing couplings and two.3. The specifications and appearance quality(1) according to domestic casing SY/T6194-96 regulations, casing length, its scope uncertain feet 8 to 13 m. But not less than 6 m casing can provide, the amount shall not exceed 20%.(2) the internal and external surface casing shall not fold, hair grain, overburden bed separation grouting, crack, rolling fold and scarring. These defects shall be completely remove, clear the depth may not exceed 12.5% of the nominal thickness.(3) the surface not couplings have folded, hair grain, overburden bed separation grouting, crack, rolling fold, scarred and other defects.(4) the casing couplings and surface should be smooth and thread, does not allow to have the burr, tear and enough to make thread interrupt influence strength and the other is closely connected to the defects.4. Chemical composition inspection(1) according to SY/T6194-96 regulations. Casing couplings and its the same steel grade. Sulphur, phosphorus content < < 0.045% 0.045%.(2) according to the provisions of the 84 GB222-take chemical analysis samples. According to the provisions of the relevant part of GB223 chemical analysis.(3) American petroleum institute (ARISPEC5CT1988 2001:1 regulations. According to the latest version ASTME59 chemical analysis sample preparation, according to the latest version ASTME350 chemical analysis.5. Physical tests(1) according to SY/T6194-96 regulations. Be crushed flat test (GB246 97) tension test GB228 (87), and water pressure test.(2) according to the American petroleum APISPEC5CT1988 learn to 1 hydrostatic pressure test version provisions, crushed flat test, sulfide stress corrosion cracking test, hardness testing (ASTME18 or the latest version provisions as E10), tensile test, transverse impact test (ASTMA370, ASTME23 and relevant provisions of the most recent editions of the standards), grain for testing (ASTME112 the latest version or other methods).6. PackagingAccording to T6194 SY / 96 regulations, domestic casing should with steel wire or steel belts externally. Each blade casing couplings and a thread of all should screw in protection to protect threads. Link
Model | all normal size or can be ordered |
Type | all kinds and size PDC bits |
Applicable | water well, oil field, construction, geothermal, directional boring, and underground foundation work |
Formation | sticky, soft, medium hard, hard formation |
Bearing | rubber seal or metal seal |
Packing | wooden tray or as your requirements |
Payment Term | T/T or L/C at sight |
MOQ | 1 Piece |
Supply Ability | 1000 Pieces/month |
Delivery Time | within 7 work days |
Drill Pipe