FIELD: oil, gas and coke-chemical industries.;SUBSTANCE: technical solution relates to oil and gas industry and can be used to prevent falling of underground equipment, in particular, electric centrifugal pumps, to well bottom. Anti-haul device comprises barrel, on which cone and anchoring mechanism is installed, located below cone and consisting at least of expandable rams, holding their bodies and radially arranged spring-loaded bars, which are engaged with housing, wherein anchoring mechanism is retained on barrel by means of at least one soluble element, installed in hole of barrel.;EFFECT: technical result is improvement of operational reliability of underground equipment, in particular, pumps, and its protection against falling.;20 cl, 3 dwg
展开▼
