Pump working condition connecting device in reinforced pump cable separate production pipe column

Abstract

The invention discloses a pump working condition connecting device in a reinforced pump cabled separate production pipe column. The pump working condition connecting device comprises an adapter substitute, a reinforced shield and an adapter substitute which are connected in sequence, the lower end of the conversion connector is connected with the pump working condition, and the pump working condition is arranged in the reinforcing protective cover. The pump working condition is connected with the electric pump unit through the adapter substitute, and the adapter substitute is hollow so that the motor can be connected with a pump working condition signal line; an integral through hole is formed in the conversion joint and is used for connecting a pump working condition pressure transmission pipeline; the reinforcing shield covers the outside of the pump working condition, and the stress influence of the pump working condition in the whole structure of the pipe column is isolated. A shockproof retainer is additionally arranged between the pump working condition and the reinforcing shield, so that collision and vibration between the pump working condition and the shell are prevented; the tail end of the reinforcing shield is connected with the adapter connector through a flange, so that continuous operation in the process of lowering a production pipe column is facilitated. The pump working condition connecting device is provided on the basis of an existing reinforced pump cable intelligent separate mining pipe column, and the flowing pressure, the temperature and the motor operation condition of the bottom hole can be monitored in real time.

Description

Technical Field

[0001] The invention relates to the technical field of reinforced pump-cable separation production, and in particular to a pump working condition connection device in a reinforced pump-cable separation production pipe column. Background Art

[0002] As the comprehensive water content of oilfield development and production increases, oil well production usually uses stratified production to test or adjust production status to achieve the goal of stabilizing oil production and increasing production. In 7” casing / tail pipe wells, stratified production is usually achieved using a common combined production string + drop-handle string production mode. If each production layer is adjusted or tested, it is necessary to switch the layer through the moving string operation before pumping down for production, which not only increases the operating cost and operating risk, but also seriously affects the implementation of oil well production increase measures and the release of production capacity.

[0003] Strengthening the pump-cable intelligent production process technology can effectively solve the above problems. The intelligent production column is connected to the tail end of the electric pump unit through the production column. A downhole stratified production distributor is installed on each oil-producing layer on the production column, and the layers are separated by insert seals. The downhole stratified production distributors, insert seals and ground controllers are connected by steel pipe cables. The ground controller communicates with the stratified production distributor in two directions through cables. By monitoring the pressure, temperature, flow and other parameters inside and outside the downhole pipe, the opening and closing of each layer of oil nozzles are controlled to achieve real-time and accurate stratified production distribution tasks.

[0004] However, in this process technology, due to the particularity of the pump working condition structure, material and connection method, and the tail end of the pump working condition is not suitable for connecting the production pipe string, which will affect its vibration monitoring function. There has been no better solution to the installation of the pump working condition, and the pump working condition cannot be used to monitor the bottom hole flow pressure, temperature, and motor operation in time. In order to solve the problem of installing the pump working condition in the reinforced pump cable separation pipe string, a pump working condition connection device is proposed with practical significance. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a pump working condition connection device in a reinforced pump cable separation production string. Based on the existing reinforced pump cable intelligent separation production string, the pump working condition connection device of the present invention can effectively solve the pump working condition installation problem, so that it can monitor the bottom hole flow pressure, temperature, and motor operation in real time.

[0006] The present invention is achieved by adopting the following technical solutions.

[0007] A reinforced pump cable separation pipe column pump condition connection device, including a conversion joint, a reinforced protective cover and a variable buckle joint connected in sequence; the conversion joint is axially penetrated, and the pump condition is connected at the lower end of the conversion joint, and the pump condition is placed in the reinforced protective cover.

[0008] Furthermore, an insert joint and a flange matching the motor flange are provided at the top of the conversion joint, and a sealing ring is provided outside the insert joint; the conversion joint and the tail end of the motor are connected with reinforcing bolts through the top flange.

[0009] Furthermore, the lower outer side surface of the conversion joint is provided with an external thread connected to the reinforced shield.

[0010] Furthermore, a groove is formed at the bottom end of the conversion joint, and the top joint of the pump working condition is placed in the groove and connected to the conversion joint by bolts.

[0011] Furthermore, the conversion joint is provided with a through hole penetrating the conversion joint outside the pump working groove.

[0012] Furthermore, the through hole is provided with 1 / 4" NPT internal threads at the top and bottom.

[0013] Furthermore, the bottom end of the reinforced shield is connected to the variable buckle joint through a flange.

[0014] Furthermore, a backflow hole is provided on the side wall of the reinforced shield.

[0015] Furthermore, a shockproof guard ring is provided between the reinforced shield and the pump working condition.

[0016] Furthermore, the lower end of the variable buckle joint is provided with an external thread.

[0017] The present invention achieves the following beneficial effects.

[0018] The present invention uses a reinforced shield to cover the pump working condition inside, and utilizes the pump working condition monitoring function to timely monitor the bottom hole flow pressure, temperature, and motor operation conditions; the reinforced shield of the present invention adopts reinforced material to meet the tensile strength requirements of the lower pipe string, thereby solving the problem that the pump working condition cannot be installed in the existing reinforced pump cable separation technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Among them: 1. conversion joint, 2. reinforced protective cover, 3. buckle joint, 4. sealing ring, 5. shockproof protective ring, 6. groove, 7. pump working condition, 8. external thread, 9. through hole, 10. backflow hole. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0022] like Figure 1 As shown, a reinforced pump has a cable separation pipe column in the pump working condition connection device, including a conversion joint 1, a reinforced protective cover 2, and a variable buckle joint 3.

[0023] The conversion joint 1 is axially through-connected, and the pump operating condition signal line can pass through it from the inside.

[0024] The upper end of the conversion joint 1 is connected to the rear end of the motor. Specifically, an insert joint and a flange matching the motor flange are provided at the top of the conversion joint 1, a sealing ring 4 is provided on the outside of the insert joint, and the conversion joint 1 is connected to the motor through the top flange with reinforcing bolts; preferably, the outer diameter of the conversion joint 1 is the same as the outer diameter of the 540 motor.

[0025] The tail end of the conversion joint 1 is connected to the pump working condition 7. Specifically, the lower end of the conversion joint 1 is concave to form a groove 6 that matches the top joint of the pump working condition 7. The top of the pump working condition 7 is placed in the groove 6 and connected to the conversion joint 1 using bolts.

[0026] The lower outer side surface of the conversion joint 1 is provided with an external thread 8 for connecting with the reinforced shield 2 .

[0027] The conversion joint 1 is provided with a through hole 9 penetrating the conversion joint 1 outside the pump working groove 6, and the through hole 9 has 1 / 4" NPT internal threads at the top and bottom for connecting the pressure transmission pipeline.

[0028] The reinforced shield 2 covers the outside of the pump condition 7, and the outer diameter of the reinforced shield 2 is consistent with the outer diameter of the conversion joint 1, and the inner diameter is larger than the outer diameter of the pump condition 7. The upper end of the reinforced shield 2 is provided with an internal thread matching the lower end of the conversion joint 1, and is connected to the conversion joint 1 through the thread, isolating the pump condition 7 from the force influence in the overall structure of the pipe string; the bottom end of the reinforced shield 2 is provided with a flange consistent with the outer diameter of the shield, and is connected to the variable buckle joint 3 through the flange.

[0029] An anti-vibration guard ring 5 is provided between the interior of the reinforced shield 2 and the pump operating chamber 7 .

[0030] The side wall of the reinforced shield 2 is provided with a backflow hole 10 for conducting the well fluid temperature.

[0031] The upper end of the variable buckle joint 3 is provided with a flange, which is connected to the reinforced shield 2 through reinforcing bolts; the lower end of the variable buckle joint 3 is provided with an external thread 8.

[0032] The conversion joint 1 of the present invention is connected to the flange at the tail end of the motor using reinforced bolts, the pump working condition 7 is connected to the groove 6 at the lower end of the conversion joint 1 and is connected to the conversion joint 1 using bolts, and the pump working condition signal line passes through the middle of the conversion joint 1 to the tail end of the motor and is connected to the motor; a through hole 9 is provided from top to bottom on the conversion joint 1, which is used to connect the pump working condition pump outlet pressure transmission pipeline; a backflow hole 10 is provided on the side wall of the reinforced protective cover 2, which is used to conduct well fluid detection temperature; the outside of the conversion joint 1 has an external thread 8, which is connected to the reinforced protective cover 2, the bottom end of the reinforced protective cover 2 is a flange, which is connected to the variable buckle joint 3, and the lower end of the variable buckle joint 3 is an external thread 8, which is convenient for pipe column connection and installation; a shockproof guard ring 5 is installed between the inside of the reinforced protective cover 2 and the pump working condition 7 to prevent collision and vibration between the pump working condition 7 and the outer casing.

[0033] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A pump working condition connection device for strengthening the pump cable separation pipe string, characterized by: The invention comprises a conversion joint (1), a reinforced protective cover (2) and a buckle joint (3) which are connected in sequence; the conversion joint (1) is axially penetrated, a pump working condition (7) is connected at the lower end of the conversion joint (1), and the pump working condition (7) is placed in the reinforced protective cover (2).

2. A pump working condition connection device for strengthening pump cable separation production pipe string according to claim 1, characterized in that: The top end of the conversion joint (1) is provided with an insertion joint and a flange matching the motor flange, and a sealing ring (4) is provided outside the insertion joint; the conversion joint (1) is connected to the rear end of the motor via the top end flange using reinforcing bolts.

3. According to claim 1, a pump working condition connection device for strengthening pump cable separation pipe string, characterized in that: The lower outer side surface of the conversion joint (1) is provided with an external thread (8) connected to the reinforced protective cover (2).

4. A pump working condition connection device for strengthening pump cable separation in a production string according to claim 1, characterized in that: The bottom end of the conversion joint (1) forms a groove (6), and the top end joint of the pump working condition (7) is placed in the groove (6) and connected to the conversion joint (1) by bolts.

5. According to claim 1, a pump working condition connection device for strengthening pump cable separation production pipe string, characterized in that: The conversion joint (1) is provided with a through hole (9) outside the pump working groove (6) and penetrating the conversion joint (1).

6. A pump working condition connection device for reinforcing pump cable separation production pipe string according to claim 5, characterized in that: The through hole (9) is provided with 1 / 4" NPT internal threads at the top and bottom.

7. A pump working condition connection device for strengthening pump cable separation production pipe string according to claim 1, characterized in that: The bottom end of the reinforced shield (2) is connected to the buckle joint (3) via a flange.

8. The pump working condition connection device in the reinforced pump cable separation pipe string according to claim 1 is characterized by: A backflow hole (10) is provided on the side wall of the reinforced shield (2).

9. The pump working condition connection device in the reinforced pump cable separation pipe string according to claim 1 is characterized by: An anti-vibration protection ring (5) is provided between the reinforced protective cover (2) and the pump working case (7).

10. A pump working condition connection device for strengthening pump cable separation production pipe string according to claim 1, characterized in that: The lower end of the variable buckle joint (3) is provided with an external thread (8).

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