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...