J55 oil casing for geothermal deep wells

When the well is drilled to the destination layer (oil and gas-bearing layer), the oil layer casing is needed to seal the oil and gas layer and the upper exposed strata, and the oil layer is inside the casing. The oil layer casing is the deepest among all types of casing, and its mechanical properties and sealing performance are the highest, using steel grades such as J 55, N80, P110, Q125 and V150. The main specifications of oil casing are: 177.8mm(7in), 168.28mm(6-5/8in), 139.7mm(5-1/2in), 127mm(5in), 114.3mm(4-1/2in), etc.
Ltd. supplies seamless pipes, structural pipes, fluid pipes, medium, low and high pressure boiler pipes, fertilizer pipes from several major steel mills such as Yegang, Baosteel, Chengsteel, Baosteel, Tianjin, Xining, etc. Petroleum cracking pipe, power pipe. Imported alloy pipe . High pressure alloy seamless pipe . American Standard seamless pipe . Stainless steel seamless pipe . Welded tubes, cast tubes, bridge tubes, marine tubes. The main material standards of seamless pipes are: 10#, 20#, 35#, 45#, 20G, GB, GB, GB, GB, GB, GB, GB, GB, 16Mn, 27simn, 15Crmo, 35Crmo, 40Cr, 10Crmo910, 12Cr1mov, 12Cr1movg, A335 10Crmo910, 12Cr1mov, 12Cr1movg, A335P22, D240, D250, N80, A335P91, etc. Stainless steel seamless pipe materials in China are as follows: 0Cr18NI9, 1Cr18NI9Ti, 00Cr17Ni14M02, 0Cr17Ni12m02, 00Cr19Ni1o, 0Cr18Ni12M02Ti, 0cr25Ni20, oocr19Ni13M03, etc., USA Stainless steel pipe materials are as follows: 301, 302, 304, 304L, 304H, 305, 316, 316L, 316Ti, 317, 317L, 310S, 321, 321H, 347H, etc. Imported – domestic high pressure alloy pipe materials: A335P11, P91, P92, 15Crmog, 12Cr1movg, 1Cr5mo, 15crmo, 35crmo, 12Cr1mov, 10Crmo910, A335P91, 1cr2mo, 15mnv, 37mn5, 15mnv, 37mn5, 347H, etc. 15mnv, 37mn5, 10Cr9mo1vNb, 15NicumoNb5, 12Cr2mowvTiB, WB36, sA106B, etc. .
Petroleum casing standard】SY/T American Standard ARISPEC5CT-1988 【Oil casing overview】 Petroleum casing is an important equipment for oil drilling, its main equipment also includes drill pipe, core pipe and casing, drill collar and small diameter drilling steel pipe. Domestic casing made of geological drilling steel by hot-rolled or cold-drawn, steel number with ” geological ” (DZ) indicates that the commonly used casing steel grade DZ40 , DZ55 , DZ753 species. Petroleum casing use]: used for oil well drilling mainly for the drilling process and after the completion of the well wall support, to ensure the normal operation of the drilling process and the completion of the entire well, [Petroleum casing types and packaging] according to SY / T ” petroleum casing ” short thread casing and its clamps and long thread casing and its clamps Two kinds. According to SY/T, domestic casing should be tied with steel wire or steel tape. Each casing and the exposed part of the thread of the clamp should be screwed on the protection ring to protect the thread. Material of oil casing steel grade】 J55, K55, N80, L80, C90, T95, P110, Q125, V150, H-40, J-55, N-80, P-110, C-75, C-95, etc.