PLUGGING BACK SOLUTION Russian patent published in 1996 - IPC

Abstract RU 2068490 C1

FIELD: gas and oil production industry. SUBSTANCE: mining, plugging back solution is used for well casing string cementing with light plugging back solutions in deep oil and gas wells in case geological section has many years frozen rocks and rocks, that have low pressure gradients of hydrofrac. Plugging back solution has following components: plugging back portland cement (43.71 - 56.56 % mass). aluminum alkaline chloride (1.75 - 2.26 % mass) and water - balance. EFFECT: solution has low density (light plugging back solution), increased water share, sedimentary stable and used during low temperatures. 1 dwg

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RU 2 068 490 C1

Authors

Rjabova L.I.

Surova L.M.

Batalov D.M.

Shcherbich N.Eh.

Sharipov A.U.

Dates

1996-10-27—Published

1992-06-25—Filed