Steam injection switch and steam injection tubular column

• Main Authors: LI JUN, WANG YINGYING, FANG LIANGFENG, MA ZHEN, QU SHAOGANG, ZHANG YULONG, PENG SONGLIANG, CUI GUANLIN, LI CHENXI, QU ZHENZHE, LIU HONGQIN
• Format: Patent
• Language: English
• Published: 21.01.2015
• 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 discloses a steam injection switch and a steam injection tubular column. The steam injection switch comprises an outer cylinder and a blocking piece, wherein the outer cylinder extends lengthwise, can be connected with an oil tube to form the steam injection tubular column, and is provided with a first end and a second end which are opposite to each other; a steam injection hole which leads into the interior of the outer cylinder is formed in the wall of the outer cylinder; the blocking piece is arranged in the outer cylinder and can block the steam injection hole; a lifting part is arranged at one end, close to the first end, of the blocking piece; the blocking piece is lifted up or dropped down through the lifting part, so that the steam injection hole can be blocked by the blocking piece. According to the steam injection switch and the steam injection tubular column provided by the utility model, the steam injection efficiency can be effectively improved.