| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: hydro-dynamic filter consists of filter element of tubular shape with filtering external surface, and of external, intermediate and internal tubes concentrically arranged. The filter element corresponds to a cylinder coil out of high-precision triangle profile welded on support elements forming a rigid shield with circular slits. Allowances of slits are within the range up to 15 mcm. In the zone of filter element installation the external tube is perforated with uniformly spaced orifices, also on its lower end there is screwed a plug of streamline shape. Ports above the filter element on the external tube are made in the intermediate tube; the lower end of the intermediate tube is plugged; the plug corresponds to a container-accumulator gathering mechanical impurities. A lower end of the internal tube is positioned below ports of the intermediate tube. ^ EFFECT: raised efficiency of purification of extracted products from mechanic impurities. ^ 6 cl, 2 dwg |
