METHOD OF ELIMINATING PROPPANT DEPOSITION CONDITIONS DURING WELL COMPLETION Russian patent published in 2018 - IPC E21B43/267 E21B34/10 

FIELD: mining.

SUBSTANCE: method of completion of the well, including elimination of the condition of proppant deposition, which occurred on the interval of the productive zone. Method comprises creating a well, and securing at least a lower portion of the well by casing string, as well as installation of a shut-off valve in casing string, while the shut-off valve creates a removable barrier for fluid flow in the barrel. Barrier is removed by moving the shut-off valve in case of proppant deposition. With overcoming of the barrier for the passage of fluid, it is opened to the effect on the length of casing string of the window into the subterranean formation at or below the mark of the shut-off valve. Additional injection is carried out to pump the sludge through exposed windows, at this condition for proppant deposition is eliminated.

EFFECT: technical result consists in improvement of efficiency of well completion.

16 cl, 33 dwg