Directional ball seat

• Main Authors: GAO GUOQIANG, XU JIANHUA, XIE WENXIAN, TIAN BING, CUI JIE, SUN SHUANGLI, XIAO KUN, PU HAO, SUN YUEDONG, HAO FENGBO, ZHANG LI
• Format: Patent
• Language: Chinese; English
• Published: 10.07.2013
• 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 directional ball seat, which is suitable for an oil field water injection well. The directional ball seat is formed by an oil pipe coupling (1), a ball seat (2), a valve ball (3), sealing rings (4), shear pins (5) and a shell (6), wherein the middle part of an outer circle of the ball seat (2) is provided with a group of annular sealing ring grooves, a group of sealing rings (4) is arranged in the annular sealing ring grooves, an annular groove is arranged at the lower parts of the sealing ring grooves, the annular groove is provided with a big upper inner hole and a small lower inner hole, an inner conical surface is arranged at the connecting position of the big upper inner hole and the small lower inner hole for transition, the upper part of an outer circle of the shell (6) is provided with a group of radial threaded holes which are internally and externally communicated, a group of grooves or holes which are internally and externally communicated is arranged at the lower part