Pressure testing device of oil-water well operation well head and blowout preventer

• Main Authors: WANG FENKANG, CHANG FANGRUI, ZHANG ZHENSHAN, CUI QIANG, LI ZENGWEI, LI ZUORONG, MA CHANGJIN, LIU TAO
• Format: Patent
• Language: Chinese; English
• Published: 13.03.2013
• 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

Disclosed is a pressure testing device of an oil-water well operation well head and a blowout preventer. The pressure testing device comprises an oil pipe (1), an inner coupling (2), a joint (3), an inner pipe (4), a sealing rubber cup (5), a rubber sleeve (6), a pipe cap (7), a pressure gage (10), and an outer coupling (16). The upper end of the oil pipe (1) of the pressure testing device of the oil-water well operation well head and the blowout preventer is in threaded connection with the outer coupling (16), and outer threads on the lower end are in threaded connection with the inner coupling (2). The inner coupling (2) is connected with the right and left double-thread joint (3) on the upper end of the inner pipe (4). The inner pipe (4) is sequentially provided with the sealing rubber cup (5) and the two-level rubber sleeve (6) from top to bottom in a sleeved mode. The bottom of the inner pipe (4) is provided with screwed plugs (7) which are in threaded connection. The pressure testing device of the oil-w