Counter cyclic cleaning valve for downhole packer

The utility model discloses a counter cyclic well cleaning valve for a downhole packer for oil industries which is suitable for various oil water wells using a packer. The utility model is composed of an upper joint, a center pipe, etc., wherein the upper joint is connected with the center pipe, and...

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Bibliographic Details
Main Authors ZHIMIN WANG, GONGMING JI, SHEXIA DONG
Format Patent
LanguageEnglish
Published 18.09.2002
Edition7
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 utility model discloses a counter cyclic well cleaning valve for a downhole packer for oil industries which is suitable for various oil water wells using a packer. The utility model is composed of an upper joint, a center pipe, etc., wherein the upper joint is connected with the center pipe, and a slide sleeve is installed outside the center pipe. The utility model has the advantages of simple production, low cost and reliable use. When the packer is blocked and buried by sand, the utility model is provided with a well cleaning passage for the packer, the sand is carried back to ground by well cleaning liquid, and the utility model relieves sand blockage and sand burying for the packer and helps the packer be smoothly released so as to reduce production cost and the workers' labor intensity.
Bibliography:Application Number: CN2001264894U