Wellhead bell mouth device

• Main Authors: LI KANG, CHEN HONGMEI, DU YAJUN, ZHAO ZHIJUN, ZHAO AIXIA, GE XIAOLI, HAN JIANHONG, LI YUANHUA
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2013
• 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

The utility model relates to a wellhead bell mouth device, relates to the oilfield drilling wellhead technology and overcomes the defects of the existing bell mouth device. The wellhead bell mouth device is structurally characterized in that a bell mouth body is connected with a preventer through a flange, a spray-proof cover is disposed at the top end of the bell mouth body, a connecting flange is connected to a slip casing head, a pipe joint flared outer threaded ring is welded on a drain pipe sub, the other end of the drain pipe sub is welded on an outer opening of the tube wall of the bell mouth body, the bell mouth body is communicated with the inside of the pipe joint flared outer threaded ring, one end of a drain pipe is connected with a pipe joint knuckle by welding, the other end of the drain pipe is connected with a wire threaded pipe, and the pipe joint flared outer threaded ring is connected with the pipe joint knuckle through a pipe joint nut. The wellhead bell mouth device has the advantages tha