FIELD: oil-and-gas industry.
SUBSTANCE: set of inventions relates to oil-and-gas industry, particularly, to well cleaning tools. In compliance with this invention, flow control tool is connected with production string and debris trap is connected to said string right under flow control tool. Well fluid is forced downward in string to make fluid flow via flow control tool and debris trap. Toll inner channel is shut off to open tool wall discharge hole. Fluid flows via ejector channel and discharge hole in well shaft and, then, to debris trap. Too comprises elongated tubular element. Note here that said wall hole extends from inner fluid channel to tubular element outer surface. Body of valve mounted to displace axially between closed position whereat fluid flow is shutoff and open position whereat fluid flow via discharge hole. Valve body has fluid channel extending there through and ejector channel extending to discharge holes but ay valve open position only.
EFFECT: more efficient removal of debris.
23 cl, 15 dwg
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