Hydraulic connecting-tripping device

• Main Authors: LEI ZHANG, JINZHONG ZHENG, DEZHONG LI, HOUYI REN, SHIJIE WANG, PENG CHI
• Format: Patent
• Language: English
• Published: 08.03.2006
• 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 hydraulic connecting-tripping device, which comprises a coupling, a connecting pipe, an upper joint, a sealing element, a spring ring, a lock block, a shear pin, a lock sleeve and a lower joint. The utility model is characterized in that one end of the upper joint is connected with the connecting pipe, and the other end is fixed to the lower joint; a spacing sleeve is connected to the outside of the upper part of the hydraulic connecting-tripping device, and the lower part is provided with the lock sleeve; the lock block is arranged between the lock sleeve and the lower joint. The utility model adopts ground hydraulic control and needs no pipe string to provide any load, which realizes safe connection and tripping; in addition, a lock block locking mechanism is adopted. The utility model, which has the advantages of connecting-tripping reliability, high successful rate and stable performance, the advantages that the accident that midway shedding during operation does not easily occur, hydraulic pipelines can be connected in series with other in-silo hydraulically controlled tools to be used, etc., is used in oil production technology for an oil field.