Technical features:
We use two-stage sliding sleeves, namely fracturing sliding sleeve and production sliding sleeve. Install a screen tube outside the production slide sleeve, and use service tools to open the fracturing slide sleeve for step-by-step annular fracturing during fracturing. Close the fracturing slide sleeve and open the production slide sleeve during production blowoff. Due to the screen tube outside the production slide sleeve, it can effectively prevent the backflow of proppant;
Prevent excessive backflow of proppant, which may affect the fracturing effect;
Fracturing of casing can increase the construction scale; Realize any multi-stage fracturing;
The diameter of the well casing is large, and a large-diameter anti erosion inner pipe is used for easy operation in the later stage;
L has designed a continuous oil pipe that can be opened and closed multiple times, with a long lifespan;
After a period of production, the formation can stabilize without backflow, and the fracturing slide and production slide can be simultaneously produced; And selectively control water according to the situation of the outlet section;
The fracturing nozzle design has a large flow area and does not produce impurity accumulation.
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