Watering flow well mouth oil extraction device for oil field ground exploitation technology

Abstract

The invention relates to the technical field of oil layer water injection equipment, and discloses a watering flow wellhead oil extraction device for an oil field ground exploitation technology, which comprises a water distributor main body, the middle part of the inner cavity of the water distributor main body is movably sleeved with an internal control valve core through a pressure spring positioned at the bottom of the water distributor main body, and the bottom of the inner cavity of the internal control valve core is provided with an elastic rubber block; and first through holes which extend to an inner cavity of the water distributor main body and are distributed in an annular array are formed in the middle of the outer surface of the water distributor main body. According to the watering flow well mouth oil extraction device for the oil field ground exploitation technology, a linkage structure is arranged between the water distributor body and the internal control valve element, so that an elastic rubber block on the linkage structure can be automatically shrunk to fall off the seat sealing ball body when bearing a large pressure; when separated layer water injection is carried out on an oil layer, extrusion abrasion caused by the setting ball to the elastic rubber block on the setting ball in the falling-off process can be effectively reduced, and the service cycle and the service life of the water distributor are effectively prolonged while the sealing performance of the water distributor component is guaranteed.

Description

technical field [0001] The invention relates to the technical field of water injection equipment for oil layers, in particular to a wellhead oil production device with a water-mixing process used in the oilfield ground production technology. Background technique [0002] With the increase of oil field production time, the energy of the oil layer itself is continuously consumed, and the pressure of the oil layer is continuously reduced. "Dead oil" remains underground and cannot be extracted. Therefore, in order to compensate for the "deficiency" phenomenon caused by crude oil to the oil layer after extraction, it is necessary to use water mixing equipment to inject a corresponding amount of water into the oil layer to maintain the oil layer. Pressure, in order to achieve high and stable production of the oilfield and obtain a higher recovery factor. [0003] At the same time, in order to achieve the effect of water injection on different geological permeable layers, in actua...

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Problems solved by technology

[0006] The invention provides a water-mixing process wellhead oil production device for oil field surface production technology, which can effectively alleviate the extrusion wear caused by the sealing member on the water distributor during the process of unsealing the water distributor, and improve the sealing performance of the water distributor. The anti-fatigue strength of the sealing member effectively prolongs the service life of the water distributor, has the advantages of high stability and reliability, solves the problem that the existing water distributor realizes its layered water injection through the seat seal, and When it is unsealed, it needs the water distributor to exert a large water injection pressure, and because the seat seal is realized by elastic friction, it will cause a large degree of damage to the sealing member in the water distributor when it is unsealed. Wear and tear, and greatly affect the fatigue strength of the upper sealing components, resulting in the continuous reduction of sealing performance in the process of continuous sealing and unsealing, poor stability and reliability, at the same time, which greatly affects the The service cycle and service life of the water distributor

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