Back-flow resistant oil nipple for oil well with oil submersible pump

• Main Authors: DAIXIN MA, DESHAN WANG, GENCAI SONG
• Format: Patent
• Language: English
• Published: 15.09.2004
• Edition: 7
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; NON-POSITIVE DISPLACEMENT PUMPS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses the nozzle tip of anti-reserve slip in submersible pump oil production well in petroleum industry and is suitable for oil well using submersible pump to extract oil. The utility model comprises a nozzle tip plug which is connected with the nozzle tip shell to seal the solid valve within the nozzle tip shell and automatically reset to prevent back flow by media pressure from resetting the seal needless of reset spring. The utility model has the advantages of simple structure, small size and low manufacturing cost. The utility model is convenient and reliable and can fully meet the requirements of spot sealing while reducing the pressure loss of produced liquid. The checking job is convenient and workers can check and replace the machine in regular nozzle tip adjustment, which reduces the labor intensity, prevents well stopping even in wellhead firing, improves safety factor and can reliably and effectively prevents reverse flow. The utility model discloses a back-flow resistant oil nozzle for an oil production well with an oil submersible pump in oil industries, which is suitable for an oil well using an oil submersible pump to produce oil. The produced oil nozzle is provided with an oil nozzle core which is connected with an oil nozzle casing, a fixed valve is clogged in the oil nozzle casing, the back-flow is resisted from a reset device, a reset spring does not need, and the reset sealing is carried out by medium pressure. The utility model has the advantages of simple structure, convenience, reliability, small volume and low processing cost, can meet the need of sealing on site, and reduces the pressure loss of output fluid. Because the installation and the repair are convenient, workers can repair and replace the oil nozzle which is periodically checked, and the labor intensity is lightened. The utility model avoids the phenomenon that the well needs stopping when a well head fires, the safety factor is enhanced, and the capability of back-flow resistance is reliable and effective.