FIELD: oil-and-gas production.
SUBSTANCE: invention related to oil-and-gas production can be used for well with viscous fluid swabbing. Equipment contains swab with load under. The load is screw shaped, connected with central rod of swab via sleeve and made of steel rod with welled on it helical thickening which is pointed in the end.
EFFECT: well swabbing operation efficiency increase.
1 dwg
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