Crown-shaped separation device for separating oil and water in well

A downhole crown-shaped separating device for separating oil and water, comprising an oil pump joint (1), a coupling collar (2), a tube joint (3), a central tube (4) and a well-flushing valve (5) which are fixedly connected with one another from top to bottom in sequence;

• wherein said central tube defines a longitudinal axis and has an uppermost end and a lowermost end,
• wherein the crown-shaped separating device further comprises N sections of separators (6) sleeved on the central tube (4), and N+1 separator joints (7) sleeved on the central tube (4) sequentially from top to bottom, N being a natural number, one section of the separator (6) being provided between two adjacent separator joints (7),
• wherein each section of separator (6) includes:
• an upper locating sleeve (8),
• a lower locating sleeve (9),
• a plurality of sedimentation cups (10) sleeved on the central tube (4) sequentially from top to bottom, in which two neighboring sedimentation cups (10) are nested into each other and form a gap between them, the uppermost sedimentation cup (10) on each section of separator (6) being fixedly connected to the central tube (4) by the upper locating sleeve (8), and the lowermost sedimentation cup (10) on each section of separator (6) being fixedly connected to the central tube (4) by the lower locating sleeve (9), and
• a plurality of ribbed separating bowls (11), each sedimentation cup (10) being provided with a ribbed separating bowl (11) embedded therein,
• wherein the sedimentation cup (10) is crown-shaped and has a middle part, an upper edge, and a multi-ribbed polygon bottom (10-1), the rib (10-1-1) of which forms an pitch angle (α) of 30 to 60 degrees with a horizontal line perpendicular to said longitudinal axis, and the middle part of the sedimentation cup (10) is a hollow cylinder, the upper edge of the sedimentation cup (10) being zigzag-shaped which corresponds to the shape of the bottom (10 -1), the sedimentation cup (10) having a cup holder (10-2) for holding said sedimentation cup which forms an annular space with the central tube (4), and
• wherein a group of intake holes (12) are provided on the central tube (4) corresponding to the annular space, a bar-shaped gap (10-2-1) is opened on the cup holder (10-2) of the sedimentation cup (10), the ribbed separating bowl (11) has same shape as that of the bottom (10-1) of the sedimentation cup (10), the ribbed separating bowl (11) is provided with several liquid passages (11-1), and the outer diameter of the sedimentation cup (10) is smaller than that of the separator joint (7).