DEVICE FOR SECONDARY OPENING OF PRODUCTIVE BED Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: device has well filter. Inserted into holes of well filter are sleeves made of easily machined materials. Sleeves are filled with viscous-plastic material and have protruding parts. Body of filter is provided with destructing member which is located on pipe string. Destructing member has internal space and is made in the form of destructing segments. Destructing segments are uniformly located over cross-section of body and they are provided with concave destructing edge and convex rear edge. Application of aforesaid embodiment of device does not foul bottom-hole of well. EFFECT: higher efficiency. 1 cl, 5 dwg