FIELD: oil and gas producing industry.
SUBSTANCE: invention relates to sphere of continuous cleaning of inner surfaces of pump pipes from paraffin wax and mechanical impurities at operation of flowing and gas-lift wells by means of centrifugal pumping units. Proposed scraper has body with knives, and sealing member, pusher arranged in body being formed by bushing, guide and stop equipment with plug and installed for engagement with sealing member. Body and pusher of scraper are made for periodical locking relative to each other. To provide cleaning of spaces of pipes at different capacity and physical properties of liquid, hole is made in plug or hole made in plug is provided with stopper made to close said plug hole.
EFFECT: reliable continuous automatic cleaning of inner spaces of pipes operating in oil wells.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PARACHUTE-TYPE AUTOMATIC SCRAPER | 1998 |
|
RU2140337C1 |
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| AUTOMATIC SCRAPER | 2006 |
|
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|
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|
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| DEVICE TO PREVENT HYDRATE AND PARAFFIN DEPOSITS IN FLOW PIPES OF OIL AND GAS WELLS | 2004 |
|
RU2272893C2 |
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|
RU2312207C2 |
| DEVICE FOR CLEANING TUBING STRING OF OIL WELLS FROM PARAFFIN | 2012 |
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RU2495995C1 |
| METHOD OF OIL PRODUCTION FROM WELL | 2011 |
|
RU2455465C1 |
