A self-adaptive intelligent retractable wellbore sand scraping tool suitable for complex structure wellbore
A complex structure, self-adaptive technology, applied in wellbore/well parts, cleaning equipment, earthwork drilling and production, etc., can solve the problems of scraper jamming and inability to adapt to the change of casing diameter, so as to protect the casing and save The effect of lifting or lowering time and stretching length can be controlled
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[0023] Below in conjunction with accompanying drawing and example the present invention will be further described:
[0024] An adaptive intelligent retractable wellbore sand scraping tool suitable for wellbore with complex structures, mainly composed of an upper joint 1, a spring 4, a wedge body 5, a knife plate 6, a wedge body 2 7, a casing 8, a center column 9, a lower Joint 10, distribution tube 11, rotary valve plate 12, motor 13, sensor 16, blade spring 18; it is characterized in that: the interior of the upper joint 1 is positioned by the shaft shoulder and connected with the end cap 2 and the pipe joint by screws 3. The end cover 2 is welded to the spring seat 17; the lower end of the upper joint 1 is threadedly connected to the upper part of the shell 8; the shell 8 has a positioning window for the installation, positioning and expansion of the knife plate 6; the knife The plate 6 is provided with a blade spring groove and a wedge-shaped body 27 movement channels; the ...
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