Oil recovery borehole operation stretching device

• Main Authors: WU CHANGFENG, MA WEIHUI, LU MEIJIN, CHEN XIBIN, MIAO GUONING
• Format: Patent
• Language: Chinese; English
• Published: 09.03.2016
• 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 an oil recovery borehole operation stretching device, including the top connection, go up the producing string way, go up flange, upward tensile pipeline, down tensile pipeline, down flange, down producing string way, lower clutch, down spacing ring, lower seal ring, go up spacing ring, upper seal ring and sucker rod, the top connection is said with last producing string and is connected, it says through tensile pipeline in the last flange company to go up producing string, it establishes on last tensile pipeline to go up spacing ring and upper seal ring, down spacing ring and lower seal ring is established under on the tensile pipeline, tensile pipeline cup joints in last tensile pipeline down, the drawing pipe is through saying that flange links producing string way down down, the lower clutch is connected at producing string way lower extreme down, the sucker rod is established in the top connection, go up the producing string way, go up flange, go up tensile pipeline, tensile p