Sand washing pen point for horizontal well

Abstract

The invention provides a sand washing pen point for a horizontal well. The sand washing pen point for the horizontal well comprises a main body, a speed governor assembly, a spray nozzle body and a turbulence sheet, wherein the speed governor assembly comprises a speed governor mandrel; one end of the speed governor mandrel is coaxially connected with one end of the main body, and the speed governor mandrel can rotate relative to the main body; the spray nozzle body is fixedly connected with the other end of the speed governor mandrel; a plurality of spray nozzles arranged at intervals are arranged on the spray nozzle body, and the spray nozzle body can drive the speed governor mandrel to rotate; and the turbulence sheet is fixedly arranged on the periphery of the spray nozzle body and is positioned at the downstream position of the plurality of spray nozzles. The sand washing pen point for the horizontal well provided by the embodiment of the invention has the beneficial effects that an impact damage effect can be achieved on sand at the bottom of the horizontal section of the horizontal well, all-around sand washing can be performed on the horizontal well, the sand washing speed can be accelerated, the sand washing effect is good, at the same time, sand-containing sand washing liquid can be brought back to the position above the horizontal section, and the defect that a sand body is brought back to a stratum is overcome, so that the sand washing requirements of most horizontal wells are met.

Description

technical field [0001] The invention relates to the field of sand flushing and sand removal for oil wells in oil production engineering, in particular to a sand flushing pen tip for horizontal wells. Background technique [0002] As horizontal wells play more and more roles in the field of crude oil production, sand production in horizontal wells is an inevitable production problem. Sand control and sand washing treatment for horizontal wells are commonly used in engineering. Existing sand washing nibs are all designed for sand washing in vertical wells, and there is no special sand washing nib for horizontal wells. The horizontal section of the horizontal well is long, and the sand body usually gathers in the lower half of the reservoir casing. The conventional sand washing pen tip can only effectively flush out the sand in front of the common pen tip, but the effect on the lower sand body is not very satisfactory. The site lacks special sand washing tools for processing t...

AI Technical Summary

Problems solved by technology

The horizontal section of the horizontal well is long, and the sand body usually gathers in the lower half of the reservoir casing. The conventional sand washing pen tip can only effectively flush out the sand in front of the common pen tip, but the effect on the lower sand body is not very satisfactory. The site lacks special sand washing tools for processing the lower sand body

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