Automatic switching three-way circulation joint for oil well

The invention discloses an oil well self-switching three-way circulation joint, which comprises the following parts: inner channel of oil pipe on the inner top of three-way circulation joint, reverse circulation channel and three-way short-circuit upper outlet, three-way short-circuit lower outlet i...

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Bibliographic Details
Main Author JIE,CHEN SU
Format Patent
LanguageEnglish
Published 03.05.2006
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:The invention discloses an oil well self-switching three-way circulation joint, which comprises the following parts: inner channel of oil pipe on the inner top of three-way circulation joint, reverse circulation channel and three-way short-circuit upper outlet, three-way short-circuit lower outlet in connection with the three-way circulation joint body, three-way circulation channel of three-way short-circuit lower outlet in connection with the three-way short-circuit upper outlet, sealing plug movement channel body in the three-way circulation joint, sealing plug device in the sealing plug movement channel, fixation plate under the sealing plug movement channel, channel groove opening around the circumferential wall of sealing plug movement channel. The invention realizes the free switching of oil well product, reverse circulation and positive circulation channels, which is fit for high viscosity dense oil well.
Bibliography:Application Number: CN2005115273