COMPOSITIONS AND METHODS FOR INCREASING FRACTURE CONDUCTIVITY Russian patent published in 2019 - IPC C09K8/80 C09K8/86 C09K8/88 C09K8/92 E21B43/267 

FIELD: mining.

SUBSTANCE: invention relates to a composition and method for increasing fractures of a subterranean formation. This method for treating the underground formation includes providing a treatment slurry composition containing a carrying fluid having a yield strength, solid particles and an agglomerant, injecting the treatment slurry into a fracture to form a substantially uniformly distributed mixture of the solid particulate and the agglomerant and transforming the substantially uniform mixture in the presence of the agglomerant into areas that are rich in solid particles and areas that are substantially free of solid particles, wherein the solid particles and the agglomerant have substantially dissimilar velocities in the fracture and wherein said transforming results from said substantially dissimilar velocities, before the closure of the fracture at least one void is formed in it that is fluid bound and not containing solid particles, and the carrying fluid has a yield strength value not exceeding the value of the maximum allowable yield strength, as determined by the above formula. Three more variants of the above method for treating a subterranean formation are also given. Method for planning the treatment of a subterranean formation includes consideration of the size of the fracture, selection of an agglomerant having a size comparable to that of the fracture, the choice of solid particles having a deposition rate that is substantially different from that of the agglomerant, the preparation of the composition of the fluid for the processing specified above. Invention is developed in dependent items of the formula.

EFFECT: improving the processing efficiency of the underground formation.

17 cl, 8 dwg, 6 tbl, 13 ex