PROCEDURE TESTING UNDERGROUND RESERVOIRS CONSTRUCTED IN SOLUBLE FORMATIONS FOR LEAK-PROOFNESS Russian patent published in 2003 - IPC

FIELD: leak-proofness test of underground reservoirs built by underground solution through boreholes and intended for storage of liquid or gaseous products in soluble formations. SUBSTANCE: in compliance with invention underground reservoir is equipped with two suspended pipe strings placed concentrically. Then liquid oil product is pumped into it, its mass in reservoir is found prior and after application of testing pressure realized by pumping of saturated brine. Fixed amount of liquid oil product of same brand but differing in chemical composition from starting product is additionally pumped into reservoir before and after application of testing pressure and mixed to obtain uniform distribution of components of formed mixture in space of underground reservoir and degree of leak-proofness of reservoir is evaluated by day leak of liquid oil product by mathematical expression given in formula of invention. EFFECT: high accuracy, simplification of procedure and possibility of its employment both during construction and usage of reservoir. 1 dwg