FIELD: oil producing industry.
SUBSTANCE: invention relates to deep-well sucker-rod pumps for pumping out liquids with high content of abrasive impurities from considerably deviating wells. Proposed oil-well sucker-rod pump has cylinder and plunger installed for movement in cylinder in which designed number of holes is drilled by laser to communicate plunger space with clearance between cylinder and plunger. Area of all holes exceeds area of annular clearance between walls of plunger and cylinder by 25-30%. Screw -like scraper arranged in hollow plunger cleans drillings from large-size particles.
EFFECT: increased service life of pump owing to reduction of wear.
| Title | Year | Author | Number |
|---|---|---|---|
| CATHODIC PROTECTION OF OIL-WELL SUCKER-ROD PUMP | 2005 |
|
RU2302480C2 |
| SAND CATCHER IN OIL WELL | 2009 |
|
RU2468196C2 |
| METHOD OF REPAIR OF DEEP-WELL SUCKER-ROD PUMP | 2004 |
|
RU2282750C1 |
| METHOD FOR REMOVAL OF SAND AND MECHANICAL IMPURITIES IN FLOW OF OIL, WATER AND GAS | 2013 |
|
RU2540131C2 |
| WELL DEWAXING DEVICE | 2005 |
|
RU2306406C1 |
| METHOD FOR THERMAL OIL RESERVOIR TREATMENT | 2006 |
|
RU2310743C1 |
| BOTTOM-HOLE CUTOFF VALVE | 2007 |
|
RU2389866C2 |
| BOTTOM-HOLE OIL PUMP | 2010 |
|
RU2415301C1 |
| MULTI-STAGE DEVICE FOR PROTECTION OF BOTTOM HOLE PUMP FROM SEIZURES | 2017 |
|
RU2693787C2 |
| METHOD OF OPERATION OF A WELL, COMPLICATED BY CARRYING OUT OF MECHANICAL IMPURITIES | 2018 |
|
RU2677768C1 |
