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2 065 925

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IPC

(21) (22)

Application

5040978/03, 1992-05-06

(22)

Actual filing date

1992-05-06

(45)

Published

1996-08-27

(72)

Inventor

Malyshev Aleksandr Grigor'EvichCheremisin Nikolaj AlekseevichMalysheva Galina Nikolaevna

(73)

Holder

Malyshev Aleksandr Grigor'EvichCheremisin Nikolaj AlekseevichMalysheva Galina Nikolaevna

METHOD OF PREVENTING HYDRATE FORMATION IN OIL WELL WITH BEAM PUMPING-OUT Russian patent published in 1996 - IPC

Abstract RU 2065925 C1

FIELD: oil and gas production. SUBSTANCE: dehydrated oil is pumped in into the oil well tube space. Then hydrocarbon solution of hydrate-formation inhibitor is entered. Common volume of dehydrated oil and hydrocarbon solution loaded into tube space is no less than that corresponding to height of column in tube space extending from dynamical level to lower boundary of hydrate formation. Successive pumping in of dehydrated oil and methanol- saturated dehydrated oil provides purification of tube space from water and hydrates. To recover hydrocarbon solution of inhibitor in the process of oil well operation, additional hydrate formation inhibitor is entered onto the surface of liquid in tube space. EFFECT: improved process. 2 cl

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RU 2 065 925 C1

Authors

Malyshev Aleksandr Grigor'Evich

Cheremisin Nikolaj Alekseevich

Malysheva Galina Nikolaevna

Dates

1996-08-27—Published

1992-05-06—Filed