| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: invention refers to gas-and-oil producing industry and can be used for oil and gas recovery. Demountable well screen contains load-bearing frame made of perforated pipe involving filter cells between two stop blocks. Each filter cell is made of wire material pressurised to perforated cases mounted on the perforated pipe with a gap which functions as an internal drainage layer. The adjacent cases are partially mutually overlapped due to that, one case side is provided with ring hollow of external diameter equal or less than internal diameter of the other case side. ^ EFFECT: higher throughput capacity and cleaning quality of liquids and gases supplied for filtration and increased service life of well screen. ^ 11 cl, 6 dwg |
