Electronically controlled continuous adjustable dispensing device for barrier type water injection polywell

A polymer injection well and electronic control technology, which is applied in wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of electrical appliances not working properly, inability to accurately inject cable seals, and inability to realize continuous adjustment of injection volume, etc. To achieve the effect of easy cable routing, improved precision and good sealing effect

CN103306649BInactive Publication Date: 2015-09-16HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-09-16
Estimated Expiration
Not applicable · inactive patent

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Patent Text Reader

Abstract

The invention provides a blocking type electric control continuous adjustable injection allocation device for an overflow polymer injection well and relates to downhole polymer drive equipment to solve the problems that an eccentric injection allocator used in the existing oilfield polymer injection well cannot continuously adjust the injection quantity and can also not accurately inject, the sealing performance of cables is bad, and an electric appliance cannot normally work due to inflow. The blocking type electric control continuous adjustable injection allocation device comprises an upper joint, a lower joint and a valve core, wherein the valve core is a hollow revolving body formed by rotating a plurality of identical buses around an axial line. The blocking type electric control continuous adjustable injection allocation device further comprises an upper cable jacket, a pin jacket, a shell jacket, a middle connecting sleeve, a connecting body, a working main cylinder, a central tube, a connecting sleeve, a lower connecting sleeve, a water outlet sleeve, a first cable joint, a liquid outlet guide pipe, a lead screw, a first coupler, a second cable joint, a third cable joint, a lower cable jacket, an outlet pressure sensor, a circuit board, a motor, a second coupler, an inlet pressure sensor, a transmission shaft, a water plug, a connecting cylinder and at least seven waterproof pins. The blocking type electric control continuous adjustable injection allocation device is used for polymer injection oil extraction.
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Description

technical field

[0001] The invention relates to downhole polymer driving equipment, which belongs to the technical field of petroleum exploitation. Background technique

[0002] In order to further enhance oil recovery, polymer oil recovery has become an important means and method of oil field development after water flooding. However, due to the high viscosity of the polymer and the complex downhole environment, the current manual fishing technology cannot achieve flow monitoring and accurate flow injection. At the same time, the construction is very difficult and cannot meet the requirements of polymer injection. Therefore, it is decided to develop a polymer injection well measurement and adjustment system. , to improve the oil displacement effect. At present, among the eccentric injectors used in polymer injection wells in oil fields, most of them rely on replacing the valve core to adjust the pressure, but they cannot achieve continuous adjustment of injection volume, a...

Examples

specific Embodiment approach 1

[0015] Specific implementation mode one: combine Figure 1-Figure 14 Describe this embodiment. The barrier-type water-through-water injection and polywell electronically controlled continuously adjustable dispensing device of this embodiment includes an upper joint 1, a lower joint 11, and a valve core 15. The valve core 15 is formed by rotating a plurality of identical busbars around the axis. The hollow rotary body, the device also includes an upper cable sleeve 2, a pin sleeve 3, a shell sleeve 4, a middle connecting sleeve 5, a connecting body 6, a working main cylinder 7, a central tube 8, a connecting sleeve 9, and a lower connecting sleeve 10 , water outlet sleeve 12, first cable joint 13, liquid outlet conduit 14, lead screw 16, first coupling 17, second cable joint 20, third cable joint 22, lower cable sleeve 24, outlet pressure sensor 25, circuit Plate 26, motor 27, second coupling 28, inlet pressure sensor 29, transmission shaft 30, water plug 31, connecting cylinde...

specific Embodiment approach 2

[0025] Specific implementation mode two: combination figure 2 This embodiment will be described. The first coupling 17 in this embodiment is a universal joint. With such arrangement, it has greater angular compensation capability, compact structure and high transmission efficiency. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific implementation mode three: combination figure 1 , image 3 , Figure 4 , Figure 5 and Figure 6 Describe this embodiment, the first cable hole 2-1 and the second cable hole 2-2 are respectively arranged on the upper cable cover 2 of this embodiment along the axial direction of the working main cylinder 7, and the pin cover 3 is arranged along the axial direction of the working main cylinder. The cylinder 7 is provided with the upper third cable hole 3-1, the fourth cable hole 3-2 and the fifth cable hole 3-3 respectively in the axial direction. Six cable holes 4-1, the seventh cable hole 4-2 and the eighth cable hole 4-3, the column 6-5 is also provided with a ninth cable hole 6-3;

[0027] The first cable hole 2-1, the third cable hole 3-1 and the sixth cable hole 4-1 are coaxially arranged, the first cable hole 2-1, the third cable hole 3-1 and the sixth cable hole 4 -1 is pierced with at least three waterproof pins 21;

[0028] The second cable hole 2...