杆式泵锚定器

Insert pump anchor

1. Applications

1） Insert pump anchor provides a trouble-free method of anchoring and packing off a pump in wells where a pump-seating nipple has not been provided， As a removable packoff in subsurface hydraulic-pump installations. Adjust the depth of the pump according to the rise and fall of the liquid level in the well.

2） As a casing packer in slimhole completions

 2. Technical Parameters

3.Working Principle

Sliding pin of sliding sleeve initial position 1 is the top of the short track of the Central tube, during the downward movement from 1 to 2, it will rotate at a certain angle due to the inclined guiding effect of the track groove , during the upward movement from 2 to 3,it will rotate at a certain angle due to the inclined guiding effect of the track groove, entering the top 3 of the long track of the Central tube, which is the seating position of the Anchor.(At this moment, the Support frame component achieves a 45 degree relative position conversion by simply moving up and down relative to the Central tube), the relative downward and upward motion from 3 to 4 and then to (1) returns to the top of the short track.

When the Support frame is at the top of short track, due to the limited of track, Anchor piece will not touch Guide Cone, the entire anchor can smoothly move down the tubing;

When the Support frame is at the top of long track, Anchor piece will touch Guide Cone, the force between the two will cause the Anchor Piece to expand and become larger, ultimately anchoring to the inner wall of the tubing, while the Guide Cone will also compress the Rubber Seal to make its outer diameter larger and contact the inner wall of the tubing to achieve sealing.

When released, lifting up the Central tube, the Guide Cone detaches from Anchor piece.

The Anchor piece loses its internal support and is released, while the Rubber seal also releases the shrink tube to unseal.

4.Features, Advantages and Benefits

1）The insert pump anchor offers complete vertical action — sets, packs off, releases, and resets without rotation — eliminating the need to pull tubing for proper depth setting of the pump.

2） Self-locking collet design sets and releases packing and slips without jamming or presetting, enhancing operational safety.

3） The anchor is automatically positioned for resetting when released and can be raised, lowered, and reset without pulling from the tubing, maximizing operational efficiency.