METHOD FOR DETERMINATION OF TUBING-CASING AND INTERFORMATION FLOWS IN WELL AND DEVICE FOR ITS REALIZATION Russian patent published in 1994 - IPC

Abstract RU 2011813 C1

FIELD: well research. SUBSTANCE: arranged in springs of rigid-type tubing centralizer are containers with capsule containing radioisotopes. Tubing is run into well. Radioisotopes penetrate into tubing-casing space after breakage of capsule due to heating in well of paraffined crystalline caustic provided in capsule aluminium bottom. Body of each container has perforated side surface and holes in cover and bottom. Places of cross-flows are detected by gamma logging. EFFECT: higher accuracy in determination. 2 cl, 2 dwg

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RU 2 011 813 C1

Authors

Zaruchaev G.I.

Tikhonov V.G.

Rylov E.N.

Bezdel'Tsev V.V.

Dedov S.M.

Dates

1994-04-30—Published

1991-06-18—Filed