Petroleum casing pipe

The utility model relates to the technical field of petroleum casing pipes, in particular to a petroleum casing pipe which comprises a first petroleum casing pipe, a second petroleum casing pipe is arranged above the first petroleum casing pipe, round plates are fixedly connected to the upper portio...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG XUEFENG, ZHOU HONG, ZHANG HONGWEN, WU CHUNDI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The utility model relates to the technical field of petroleum casing pipes, in particular to a petroleum casing pipe which comprises a first petroleum casing pipe, a second petroleum casing pipe is arranged above the first petroleum casing pipe, round plates are fixedly connected to the upper portion of the outer wall of the first petroleum casing pipe and the lower portion of the outer wall of the second petroleum casing pipe, a plate body is fixedly connected to the upper portion of the inner wall of the first petroleum casing pipe, and the upper portion of the inner wall of the second petroleum casing pipe is fixedly connected with the plate body. The inner wall of the plate body is fixedly connected with a pipe body, and a sealing structure is arranged on one side of the pipe body. Through cooperation of the first petroleum casing pipe, the lead screw, the pipe body, the second petroleum casing pipe, the circular plate, the inclined block, the nut, the plate body and the sealing structure, the pipe body i