| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: device includes a supporting pipe and filter brushes with radial bundles of bristles. Longitudinal slots with a larger base inside and a smaller base outside are cut on the supporting pipe. In the base of each slot a flat strip from material with shape memory is placed, and above the strip there is a filter rack brush extendable outwards at recovery by the strip of initial wave shape under temperature influence of formation liquid.EFFECT: simpler design of a strainer and procedure of its installation at the interval of well perforations.4 cl, 6 dwg |
