METHOD FOR INSTALLING A FILTER IN A WELL Russian patent published in 2021 - IPC E21B43/08 

FIELD: oil industry.

SUBSTANCE: invention applies to a technology for producing oil from a well, and in particular to a method for installing filters in wells complicated by sand removal, as well as in inclined wells. When implementing the method, oil samples with the removed sand are pre-selected from the well and the grain size analysis of the sand grains contained in the oil is performed; depending on the size of the sand grains, the filter throughput is selected, then the outer diameter of the centralizer with overflow channels is selected depending on the length of the filter installed in the well, after which a plug and a centralizer with crossflow channels are installed at the wellhead at the lower end of the filter. The lower end of the working pipe string is equipped from the bottom up with a filter, a through-hole drillable packer with a landing tool and the working pipe string is lowered into the well so that the lower end of the filter is 1-2 m above the top of the productive formation, hydraulic pressure is created in the working pipe string and brought into the action of the setting tool, the drill-through packer is set, after which the working string of pipes with the setting tool is removed from the well, then the production equipment is lowered into the well and the well is operated.

EFFECT: improved reliability, reduced installation time of the filter in the well, increased service life and filtration efficiency.

1 cl, 1 tbl, 6 dwg