Annulus pressure monitoring sealing device for geological drilling

• Main Authors: ZHANG DELONG, WANG XINPING, TAO SHIXIAN, HU JILIANG
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2012
• Subjects: 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

The utility model relates to an annulus pressure monitoring sealing device for geological drilling, which is suitable for such drilling maintenance operations as pressure monitoring, pressure control, pressure plugging and the like in the geological drilling construction. The annulus pressure monitoring sealing device consists of a central tube, a sealing housing, a pressure gauge, a safety valve, a pressure relief tube, a cock, an orifice tube, buttons and seal rings, wherein the sealing housing is mounted on the central tube; four L-shaped notches are formed on the sealing housing; the pressure gauge and the safety valve are connected to and mounted on the sealing housing; the pressure relief tube is mounted on the sealing housing; the cock is mounted at the upper end of the pressure relief tube; the seal rings are mounted on the orifice tube in the sealing housing; and four buttons are welded on the outer wall of the orifice tube and used for locking the relative position of the sealing housing and the ori