Oil Casing is a large-diameter pipe, played the role of fixed oil and gas wells, or wellbore wall. Oil casing steel grade: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150 and so on. End of the tube processing forms: short round thread, long round thread, buttress thread, special deduction. Mainly used for oil well drilling support on the wall after drilling and completion, and after completion to ensure the normal operation of the entire drilling process wells.
High performance casing pipe is used to support the oil and gas pipe wall, in order to ensure the drilling process and after completion normal operation of the wells. Each well depending on the depth of drilling and geological conditions, to use several layers of casing. After cementing casing go down to use it and tubing, drill pipe is different, cannot be reused, are disposable consumable materials. Therefore, the casing consumption of more than 70% of all the oil well pipe.
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