Self-adaptive deflation rod and shallow gas controlled deflation recovery system and method

The invention discloses a self-adaptive deflation rod and a shallow gas controlled deflation recovery system and a method. The adaptive deflation rod comprises a second hollow probe rod and a first hollow probe rod, wherein the second hollow probe rod is connected with the lower part of the first ho...

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO SHUANG, WANG LIZHONG, WANG QIANG, HONG YI, MAO QIHUI, ZHU LIANGEN
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 invention discloses a self-adaptive deflation rod and a shallow gas controlled deflation recovery system and a method. The adaptive deflation rod comprises a second hollow probe rod and a first hollow probe rod, wherein the second hollow probe rod is connected with the lower part of the first hollow probe rod, the diameter of the second hollow probe rod is larger than that of the first hollowprobe rod, a groove is formed in the middle of the second hollow probe rod in the circumferential direction, a sliding sleeve is arranged in the groove, and the lower end of the sliding sleeve is wedge-shaped; the upper part of the groove is provided with a deflation hole, the sum of the length of the sliding sleeve and the length of the deflation hole is smaller than the length of the groove, andthe length of the sliding sleeve is larger than the length of the deflation hole; during the inserting process of the self-adaptive deflation rod, the sliding sleeve slides to the upper part of the groove to cover up the defl