Pitching type backwashing valve

The utility model relates to a pitching type backwashing valve can launch after the open backwashing valve of the side leakage of water injection string bottom. This backwashing valve includes top connection and lower clutch, and the top connection is connected with lower connector thread, is equipp...

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Bibliographic Details
Main Authors SHI MINGHUA, ZHOU GUANGYI, HE YUN, LI ENQING, YIN HAIFENG, MU TINGHUA
Format Patent
LanguageChinese
English
Published 19.06.2018
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
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Summary:The utility model relates to a pitching type backwashing valve can launch after the open backwashing valve of the side leakage of water injection string bottom. This backwashing valve includes top connection and lower clutch, and the top connection is connected with lower connector thread, is equipped with the lock tube in the inner chamber of lower clutch, is equipped with ball seat and ball sealer cooperation in the inner chamber of lock tube. The utility model discloses simple structure, the lock tube of installation in the lower clutch is not the fixed mode of shear pin, and the lock clawof the logical flute profile one -tenth of axial on the lock tube body has elasticity, makes moving down of lock tube more smooth, and the structure is more simple. The utility model discloses can show the harm that reduces the open backwashing valve of former well layering water injection string bottommost side and lost efficacy and bring, guarantee layering water injection effect, improve oil field water drive developme
Bibliography:Application Number: CN201721490565U