| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: device consists of a support tube with a number of longitudinal cuts, draining and filtering metal meshes. The meshes are corrugated longitudinally and placed with a gap in-between which is filled with granular filling. Perimeter of the filtering mesh in cross section is equal to perimeter of the well borehole.EFFECT: improving reliability, fineness of filtering and service life of the screen.2 dwg |
