A submersible electric reciprocating pump huff and puff oil production device
A technology of oil extraction device and reciprocating pump, which is applied in pump, production fluid, earthwork drilling and other directions, can solve the problems of high safety and environmental protection risk, low construction efficiency, etc., and achieve the effect of high degree of automation, improvement of maintenance-free period, and improvement of economic benefits.
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Embodiment 1
[0020] see figure 2 and image 3 , the present invention provides a submersible electric reciprocating pump huff and puff oil recovery device, including an automatic downhole water injection switch 6 and an oil submersible electric reciprocating pump for switching between water injection and oil production channels; wherein the upper end of the downhole automatic water injection switch 6 has a liquid outlet 9 It is connected with the oil pipe 4, and its lower end liquid inlet 10 is connected with the oil outlet of the upper end of the submersible electric reciprocating pump through the oil pipe 4.
[0021] The downhole automatic water injection switch 6 includes four functional components of a downhole power supply, a control circuit, a drive motor and a mechanical switch located in its working cylinder 11; wherein the downhole power supply is electrically connected to the drive motor and the control circuit, and the control circuit is electrically connected to the drive moto...
Embodiment 2
[0025] On the basis of Embodiment 1, the submersible electric reciprocating pump includes a pull-down oil well pump 7, a linear motor 8 and a submersible cable 5; wherein the lower end of the pull-down oil well pump 7 is connected to the upper end of the linear motor 8, and the two are composed of Rodless pump oil production system; the upper end of the pull-down oil well pump 7 is connected to the lower end of the downhole automatic water injection switch 6; the submersible cable 5 is respectively connected to the pull-down oil well pump 7 and the linear motor 8 and leads to the outside of the wellhead.
[0026] The pull-down oil well pump used in the submersible electric reciprocating pump adopts the working mode of pulling the plunger down to discharge liquid, which ensures that the motor mover is in a stretched state when it is stressed, and effectively avoids partial wear of the mover. The liquid inlet of the oil well pump is located on the upper end of the linear motor, a...
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