Novel stereo sand control screen
The invention relates to a novel stereo sand control screen which comprises a central base tube, filters, a supporting tray and an overflowing protection sleeve, wherein a plurality of overflowing holes are formed in the wall of the central base tube and filled with the filters, the supporting tray is composed of a first tray body and a second tray body, and the first tray body and the second tray body are fixedly arranged at the two ends of the central base tube respectively; the overflowing protection sleeve is arranged outside the central base tube in a coaxial and sleeved mode, and the two ends of the overflowing protection sleeve are fixed on the central base tube through the first tray body and the second tray body respectively; a plurality of arched structures are arranged on the overflowing protection sleeve, and two screening grooves are formed by each arched structure and the overflowing protection sleeve. The novel stereo sand control screen is good in erosion resistance and filtering effect due to the fact that the overflowing protection sleeve is arranged on the outer layer and the filters are arranged on the inner layer, and especially has good sand prevention and protection functions for gravel packing, removal of burrs left from windowing of a sidetracking well, and removal of burrs left from float collar and float shoe drilling of an operating well. 1. A novel three-dimensional sandproof screen casing, characterized in that comprises: Central base tube, its wall is provided with a plurality of overflow hole; The filter member, is filled in the hole in the over-current; Supporting disk, the disk body is a disk body and 1st 2nd, and 1st 2nd the body is arranged in the centre are respectively fixed on the two ends of the base tube; Overcurrent protective sleeve, the shaft sleeve is disposed on the center of the outside of the base, and the two ends of the protective sleeve states the overflow by the 1st and the 2nd plate is fixed on the disk body on the centre of the base tube; Wherein said overcurrent protection sleeve is equipped with a plurality of bow-shaped structure, and each the overcurrent protective sleeve with said structure forming two permutites groove. 2. Novel three-dimensional sand control screen according to Claim 1, characterized in that a plurality of over-current protective sleeve along the bow-shaped structure is mixed with the distributed in the circumferential direction. 3. Novel three-dimensional sand control screen according to Claim 1, characterized in that the bow-shaped structure is in the overcurrent protection sleeve is formed by stamping. 4. The arbitrary one of the novel three-dimensional sand control screen according to Claim 1-3, characterized in that the over-current protective sleeve in each the to the position of the structure in the center of the inner wall on the outer circumference of the base. 5. Novel three-dimensional sand control screen according to Claim 4, characterized in that the bow-shaped structure and the over-current of holes are distributed. 6. Novel three-dimensional sand control screen according to Claim 4, characterized in that the over-current protective sleeve the upper end of which is welded on the plate body to the 1st, the 2nd and the lower end is welded on the disc body, and the protective sleeve and states the overflow between the centre of the base tube with space in order to form axial flow channel. 7. Novel three-dimensional sand control screen according to Claim 1, characterized in that the overflow hole is countersunk through hole. 8. Novel three-dimensional sand control screen according to Claim 7, characterized in that the step surface of the sunk through hole is provided with a plurality of auxiliary through hole, the plurality of auxiliary through hole sunk in the aperture as the center of a circle of the through hole are arranged in circumference. 9. Novel three-dimensional sand control screen according to Claim 8, characterized in that the filter element through the screw connection is embedded in the sunk hole in of the through hole. 10. Novel three-dimensional sand control screen according to Claim 9, characterized in that the filter element is a stainless steel three-dimensional metal fiber.