FIELD: methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells.
SUBSTANCE: method involves extracting formation liquid by immersed pump connected to production string without creation of underpressure areas at string inlet. Immersed guided-vane pump is used for above method realization. Guided-vane pump comprises hollow body provided with high-pressure channels and stator with inner cavity having openings. Rotor with grooves is located in the stator. Arranged in the grooves are reciprocating plates. Opposite windows are formed in body and stator walls. Due to elimination of sucking chambers between the plates pump performs only pumping operation, which allows production of highly-viscous oil and oil with high gas content.
EFFECT: possibility to produce highly-viscous oil and oil with high gas content.
2 cl, 3 dwg
| Title | Year | Author | Number |
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| CHECK VALVE | 2005 |
|
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