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随着我国石油工业的迅速发展,石油专用管材的需要量越来越多,特别是钻井深度在不断增加的情况下,更需要大量适合深井使用的高质高强套管和钻杆等管材。过去,这类产品都是从国外进口,价格昂贵,订货困难还不配套。为了满足国家需要,我厂从去年开始按API标准试生产高强度、高质量的石油专用管材。现已试制成功内外加厚的φ127石油对焊钻杆和φ177.8、φ139.7高强度石油套管。钻杆试制工艺:钻杆使用的钢材是我厂专门研究的电炉低合金高强度钻杆杆体钢(A651)和对焊接头钢(A652),经我厂216周期轧管车间中型轧机热轧后,
With the rapid development of China’s oil industry, the demand for petroleum-based pipe materials is increasing. In particular, under the circumstance of ever-increasing drilling depth, a large number of pipe materials such as high-quality and high-strength casing and drill pipe for deep wells are needed. In the past, these products are imported from abroad, expensive, ordering difficulties are not complete. In order to meet the needs of the country, I plant from the beginning of last year according to the API standard trial production of high strength, high quality oil pipe. Has been successfully trial-made thick inside and outside φ127 oil butt welding drill pipe and φ177.8, φ139.7 high-strength oil casing. Drill rod trial production process: The steel used for drill pipe is the low-alloy high-strength drill pipe rod body steel (A651) and butt welded joint steel (A652) specially researched by our factory. After being hot-rolled by our company’s 216-cycle rolling mill intermediate mill, ,