Oil well pump for horizontal well and inclined well

The utility model discloses an oil well pump for a horizontal well and an inclined well. The oil well pump for the horizontal well and the inclined well is applicable to exploitation of an oil well with a large inclination and the horizontal well. According to the oil well pump for the horizontal we...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YU ZHIWEI, LI YANG, HU CHUNQIN, HAN JINGLOU, HUANG PENG
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The utility model discloses an oil well pump for a horizontal well and an inclined well. The oil well pump for the horizontal well and the inclined well is applicable to exploitation of an oil well with a large inclination and the horizontal well. According to the oil well pump for the horizontal well and the inclined well, a travelling cage type valve housing (7) and a fixed cage type valve housing (12) are arranged in a travelling valve housing (4) of a travelling valve (6) and a fixed valve housing (10) of a fixed valve (14) respectively, an inwards-concave surface is arranged on the contact surface between the travelling cage type valve housing (7) and the travelling valve ball (8), the depth of the inwards-concave surface is larger than the radius of the travelling valve ball (8), an inwards-concave surface is arranged on the contact surface between the fixed cage type valve housing (12) and a fixed valve ball (13), and the depth of the inwards-concave surface is larger than the radius of the fixed valve