ELECTROCONDUCTIVE PROPPING FILLER AND METHODS FOR ITS PRODUCTION AND USE Russian patent published in 2020 - IPC C09K8/80 E21B43/267 

FIELD: technological processes.

SUBSTANCE: present invention relates to hydraulic fracturing of underground formations using propping agents. Proppant from the proppant for use in stimulating a hydrocarbon-containing formation, comprising a plurality of particles, where each said particle comprises a substantially uniform coating of electroconductive metal with a thickness of at least 10 nm, formed on the outer surface of each said particle, wherein each particle is characterized by specific weight less than 4 and with size from approximately 80 mesh to approximately 10 mesh, the packing is characterized by electric conductivity of at least approximately 5 Sm/m and increase in the puffing load in 2 times increases the electric conductivity of the packing by at least 50 %. Method for producing said filler, comprising contacting a plurality of particles with an alkaline solution with pH greater than 8 to obtain treated particles and contacting the treated particles with a coating solution, containing one or more electrically conductive metals, to obtain electroconductive propping agent particles containing a substantially uniform coating of electroconductive metal with a thickness of at least 10 nm, formed on the outer surface of each of said particles, where the wicking of the electroconductive particles of the propping agent is characterized by electrical conductivity of at least about 5 Sm/m and increase in the puffing load in 2 times increases the electric conductivity of the packing by at least 50 %. Method of producing said filler, involving activation of plurality of burnt, substantially round and spherical particles to obtain activated particles, where each of plurality of burnt, substantially round and spherical particles is characterized by specific weight less than 4 and with size from approximately 80 mesh to approximately 10 mesh, contact of activated particles with a coating solution containing one or more electrically conductive metals, to obtain electroconductive particles of propping agent, containing substantially uniform coating from electroconductive metal with thickness of at least 10 nm, formed on outer surface of each said particle, where the wicking from the electroconductive particles of the propping agent is characterized by electrical conductivity of at least about 5 Sm/m, and increasing the load on padding by 2 times increases the electrical conductivity of the padding by at least 50 %.

EFFECT: technical result is increase of the propping agent detection efficiency in the fracture in time.

20 cl, 16 dwg, 9 tbl, 7 ex