Oil and gas field negative pressure mining device

The utility model discloses an oil and gas field negative pressure mining device and relates to an oil and gas field downhole fluid mining technology. The oil and gas field negative pressure mining device comprises a set of downhole combined tubular column and a ground negative pressure device, wher...

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Bibliographische Detailangaben
Hauptverfasser:	WU ZHONGCHAO, ZHANG SHUNBIN, LIU HAIBO, SI YONGHAO, MIN GANG, TAN XIAO, ZHAO WEI, LUO FENG, PANG YOUQIANG, SHEN JIAN
Format:	Patent
Sprache:	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 discloses an oil and gas field negative pressure mining device and relates to an oil and gas field downhole fluid mining technology. The oil and gas field negative pressure mining device comprises a set of downhole combined tubular column and a ground negative pressure device, wherein the body of the ground negative pressure device is a cylinder body, a main body of the cylinder body is a piston inner cavity, a main piston and an auxiliary piston are arranged in the middle of the cylinder body and are of an integrated structure, a sealing chamber is installed in the cylinder body, one end of a hydraulic inlet pipe is connected to a pump body, the other end of the hydraulic inlet pipe is connected with a liquid storage pool, a hydraulic pump is installed in the middle, and the liquid storage pool is connected with a hydraulic return pipe.