A heating device for improving oil well recovery rate

Abstract

The present invention discloses a heating device for increasing oil well recovery rate, which relates to the field of oil extraction technology, and includes a heating box and a heat exchanger. A water storage tank is fixed on one side of the interior of the heating box, an explosion-proof power distribution box is connected to one side of the heating module, an insulation pipe is connected to the top of the heating module, and the bottom of the heat exchanger is connected to the water storage tank through a pipeline. The heating device for increasing oil well recovery rate first heats pure water, and the heated pure water flows to exchange heat with crude oil, so that the oil pipeline is not directly heated to avoid coking of the pipe wall and accelerated corrosion of the pipe wall. At the same time, whether the membrane sleeve is bubbling is used to monitor whether the pipeline has crack leakage, and when crack leakage occurs, the pure water flow is used to pull in the cable tie to tighten it on both sides of the bubble to prevent the expansion of the bubble part, so as to provide sufficient time for the arrival of maintenance personnel, and it can also be used as an emergency measure to maintain the original heat exchange transmission.

Description

Technical Field

[0001] The invention relates to the technical field of oil production, in particular to a heating device for improving oil well recovery rate. Background Art

[0002] During the oil extraction process, crude oil needs to be heated to reduce viscosity, making it easier to flow and transport so as to reduce pipeline transportation resistance and energy consumption. Therefore, the oil pipeline is generally heated during the oil extraction process to reduce the viscosity of the crude oil in the pipeline.

[0003] In the existing oil production process, if the oil pipeline wall is directly heated, it is difficult for the pipe wall to be heated evenly and it is easy to cause coking of the pipe wall due to the difficulty in temperature control. It is also easy to accelerate pipeline corrosion and affect the life of the pipeline. In addition, there is a lack of timely and effective emergency treatment methods for leakage from pipe wall cracks.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a heating device that increases the oil well recovery rate is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a heating device for improving oil well recovery rate, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a heating device for providing oil well recovery rate, comprising a heating box and a heat exchanger, a water storage tank is fixed on one side of the interior of the heating box, and the water storage tank is connected to a three-way valve through a pipeline, one end of the three-way valve is connected to a main pump and a first stop valve in sequence through a pipeline, and the other end of the three-way valve is connected to an auxiliary pump and a second stop valve in sequence through a pipeline, one end of the first stop valve and the second stop valve are commonly connected to a water collecting pipe, and the outer wall of the water collecting pipe is connected to a heating module, one side of the heating module is connected to an explosion-proof distribution box, the top of the heating module is connected to an insulation pipe, and the end of the insulation pipe away from the heating module is connected to a heat exchanger, an oil pipeline is penetrated inside the heat exchanger, and one end of the oil pipeline is provided with an oil inlet, and the other end of the oil pipeline is provided with an oil outlet, and the bottom of the heat exchanger is connected to the water storage tank through a pipeline.

[0007] Furthermore, a water passage cavity is provided between the outer wall of the oil pipeline and the inner wall of the heat exchanger, and a membrane sleeve is provided on the outer wall of the oil pipeline.

[0008] Furthermore, an emergency treatment component is arranged inside the water passage cavity, and two groups of the emergency treatment components are arranged in total.

[0009] Furthermore, the emergency handling component includes a driving motor, a screw, a movable sleeve, a wrapping frame and an underwater vision camera, the end of the driving motor is connected to the screw, and the outer wall of the screw is provided with a movable sleeve, the outer wall of the movable sleeve is provided with a wrapping frame, and underwater vision cameras are fixed on both sides of the wrapping frame.

[0010] Furthermore, the wrapping frame is sleeved on the outer wall of the membrane sleeve, and the underwater visual cameras are distributed on both sides of the wrapping frame in a ring shape.

[0011] Furthermore, the emergency handling component also includes an annular groove, a cable tie and a force-bearing float. An annular groove is opened inside the wrapping frame, and a cable tie is arranged inside the annular groove. One end of the cable tie passes through the other end thereof and is connected to the force-bearing float.

[0012] Furthermore, the force-bearing floating ball is located inside the water-passing cavity, and the water-passing cavity is connected to the insulation pipe and the water storage tank.

[0013] Furthermore, the emergency handling component also includes an electric telescopic rod and a clamping plate. The electric telescopic rod is fixed to one side of the wrapping frame, and the end of the electric telescopic rod is connected to the clamping plate.

[0014] Furthermore, the emergency handling component also includes a rubber bag and a micro pump. The micro pump is fixed to the side of the wrapping frame away from the electric telescopic rod, and the rubber bag is arranged inside the annular groove.

[0015] Furthermore, the rubber bag is connected to the micro pump through a pipeline, and the rubber bag is arranged outside the cable tie.

[0016] The present invention provides a heating device for improving oil well recovery rate, which has the following beneficial effects:

[0017] The heating equipment for increasing the oil well recovery rate first heats the pure water, so that the heated pure water flows along the outer wall of the oil pipeline to exchange heat with the crude oil inside, so that the oil pipeline is not directly heated, so as to avoid coking of the pipe wall and prevent accelerated corrosion of the pipe wall. At the same time, whether the membrane sleeve on the outer wall of the pipe is bubbling is used to monitor whether the pipeline has crack leakage, and when crack leakage occurs, the flow of pure water is used to pull in the cable tie to tighten it on both sides of the bubble to prevent the expansion of the bubble part, so as to provide sufficient time for the arrival of maintenance personnel, and it can also be used as an emergency measure to maintain the original heat exchange and transmission.

[0018] The heating device for increasing the oil well recovery rate has a tightening force of the cable tie that is affected by the pure water flow rate. When the pure water flow rate is insufficient, the tightening force of the cable tie is likely to be insufficient. At this time, a micro pump injects pure water into the rubber bag, causing the rubber bag to swell and thus adhere closely to the surface of the membrane sleeve on both sides of the bubble, so as to cooperate with the cable tie to enhance the restricting effect on the bubble part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal top view of a heating box of a heating device for improving oil well recovery rate according to the present invention;

[0020] Figure 2 This is a schematic diagram of the front view of the internal structure of a heating box of a heating device for increasing oil well recovery rate according to the present invention;

[0021] Figure 3 This is a schematic diagram of the appearance structure of a heating box of a heating device for increasing oil well recovery rate according to the present invention;

[0022] Figure 4 This is a schematic diagram of the oil pipeline structure of a heating device for improving oil well recovery rate according to the present invention;

[0023] Figure 5 This is a schematic diagram of a membrane sleeve structure of a heating device for improving oil well recovery rate according to the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a micro pump for a heating device that provides oil well recovery rate according to the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of an electric telescopic rod of a heating device for improving oil well recovery rate according to the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of an annular groove of a heating device for increasing oil well recovery rate according to the present invention.

[0027] In the figure: 1. heating box; 2. water storage tank; 3. three-way valve; 4. main pump; 5. first stop valve; 6. auxiliary pump; 7. second stop valve; 8. water collecting pipe; 9. heating module; 10. explosion-proof distribution box; 11. insulation pipe; 12. heat exchanger; 13. oil pipeline; 14. oil inlet; 15. oil outlet; 16. membrane sleeve; 17. emergency treatment component; 1701. drive motor; 1702. screw rod; 1703. movable sleeve seat; 1704. wrapping sleeve frame; 1705. underwater visual camera; 1706. annular groove; 1707. cable tie; 1708. force-bearing buoy; 1709. electric telescopic rod; 1710. splint; 1711. rubber bag; 1712. micro pump. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figure 1-Figure 8As shown, the present invention provides a technical solution: a heating device for providing oil well recovery rate, comprising a heating box 1 and a heat exchanger 12, a water storage tank 2 is fixed on one side of the interior of the heating box 1, and the water storage tank 2 is connected to a three-way valve 3 through a pipeline, one end of the three-way valve 3 is sequentially connected to a main pump 4 and a first stop valve 5 through a pipeline, and the other end of the three-way valve 3 is sequentially connected to an auxiliary pump 6 and a second stop valve 7 through a pipeline, one end of the first stop valve 5 and the second stop valve 7 are commonly connected to a water collecting pipe 8, and the outer wall of the water collecting pipe 8 is connected to a heating module 9, one side of the heating module 9 is connected to an explosion-proof distribution box 10, the top of the heating module 9 is connected to an insulation pipe 11, and the end of the insulation pipe 11 away from the heating module 9 is connected to a heat exchanger 12, an oil pipeline 13 is penetrated inside the heat exchanger 12, and an oil inlet 14 is provided at one end of the oil pipeline 13, and an oil outlet 15 is provided at the other end of the oil pipeline 13, and the bottom of the heat exchanger 12 is connected to the water storage tank 2 through a pipeline;

[0030] The specific operation is as follows: the first stop valve 5 is opened and the main pump 4 is in operation. At this time, the auxiliary pump 6 and the second stop valve 7 are closed, so that the pure water in the water storage tank 2 enters the water collecting pipe 8 along the pipeline and is passed into the heating module 9 for heating. After the pure water temperature is heated to 70 degrees Celsius, it enters the heat exchanger 12 along the insulation pipe 11. At the same time, the crude oil enters the oil pipeline 13 from the oil inlet 14 and flows along the inside to pass through the heat exchanger 12. At this time, the hot pure water in the heat exchanger 12 flows along the outer wall of the oil pipeline 13 to exchange heat with the crude oil in the oil pipeline 13. The pure water after heat exchange returns to the water storage tank 2 and enters the next cycle, and the crude oil in the oil pipeline 13 is discharged from the oil outlet 15 after being heated.

[0031] When the circuit of the main pump 4 fails, the first stop valve 5 is closed, while the auxiliary pump 6 and the second stop valve 7 are opened, so that the pure water enters the water collecting pipe 8 along the circuit of the auxiliary pump 6 and passes into the heating module 9 for heating, thereby not delaying the crude oil transportation and facilitating the maintenance of the circuit of the main pump 4 at the same time;

[0032] Pressure sensors and temperature sensors are provided at the oil outlet 15 and the oil inlet 14 to monitor the temperature of the inlet and outlet oil and the pressure inside the pipe, and the explosion-proof distribution box 10 is used to control the above system. The explosion-proof distribution box 10 has built-in 4G communication and supports remote control. When any sensor or a certain position fails, a remote alarm can be issued through the APP to deal with the hidden dangers in time.

[0033] like Figure 1-Figure 8As shown, a water-passing cavity is provided between the outer wall of the oil pipeline 13 and the inner wall of the heat exchanger 12, and the outer wall of the oil pipeline 13 is provided with a membrane sleeve 16, and an emergency treatment component 17 is provided inside the water-passing cavity. The emergency treatment component 17 is provided with two groups, and the emergency treatment component 17 includes a driving motor 1701, a screw rod 1702, a movable sleeve seat 1703, a wrapping sleeve frame 1704 and an underwater visual camera 1705. The end of the driving motor 1701 is connected to the screw rod 1702, and the outer wall of the screw rod 1702 is provided with a movable sleeve seat 1703, the outer wall of the movable sleeve seat 1703 is provided with a wrapping sleeve frame 1704, and underwater visual cameras 1705 are fixed on both sides of the wrapping sleeve frame 1704, and the wrapping sleeve frame 1704 is sleeved on the outer wall of the membrane sleeve 16, and the underwater The visual camera 1705 is distributed in a ring shape on both sides of the wrapping frame 1704. The emergency treatment component 17 also includes an annular groove 1706, a cable tie 1707 and a force-bearing float 1708. The wrapping frame 1704 is provided with an annular groove 1706, and the annular groove 1706 is provided with a cable tie 1707. One end of the cable tie 1707 passes through the other end thereof and is connected to the force-bearing float 1708. The force-bearing float 1708 is located inside the water-passing cavity, and the water-passing cavity is connected to the insulation pipe 11 and the water storage tank 2. The emergency treatment component 17 also includes an electric telescopic rod 1709 and a splint 1710. The electric telescopic rod 1709 is fixed on one side of the wrapping frame 1704, and the end of the electric telescopic rod 1709 is connected to the splint 1710.

[0034] The specific operation is as follows. Since the oil pipeline 13 passes through the inside of the heat exchanger 12, the outer wall of the oil pipeline 13 is in direct contact with the pure water for heat exchange, resulting in extremely high sealing performance of the oil pipeline 13. However, there is still an inevitable risk of cracks on the surface of the oil pipeline 13. For this reason, a membrane sleeve 16 is provided on the outer wall of the oil pipeline 13. When the pure water flows along the inside of the water cavity, the temperature passes through the membrane sleeve 16 and contacts the oil pipeline 13. Without reducing the effect of temperature conduction, a sealing measure is added to the surface of the oil pipeline 13. At the same time, the intermittent drive motor 1701 drives the screw rod 1702 to rotate clockwise or counterclockwise so that the movable sleeve seat 1703 carries the package sleeve frame 1704 to slide back and forth along the outer wall of the membrane sleeve 16. The surface conditions of the membrane sleeve 16 are regularly captured by the underwater visual camera 1705 and transmitted back to the background. When a bulge is captured on the surface of the membrane sleeve 16, it indicates that gas or crude oil is leaking. Therefore, a timely warning is given through the APP, and the leakage position can be quickly located based on the bulge position.

[0035] When bubbles are found, the two wrapping frames 1704 approach them from both sides and stay on both sides of the bubble. At this time, the electric telescopic rod 1709 extends to make the clamp 1710 loosen the clamp on the exposed end of the tie 1707. At this time, the force-bearing float 1708 moves synchronously under the action of the flow of pure water, so that the exposed end of the tie 1707 is stressed and its inner mouth is tightened, thereby making the tie 1707 on both sides of the bubble on the surface of the membrane sleeve 16 to avoid further expansion of the bubble. In addition, the force-bearing float 1708 will always tighten the tie 1707 based on the continuous flow of pure water to prevent it from loosening, thereby providing sufficient time for subsequent maintenance personnel to arrive for emergency repairs. During emergency repairs, even if the pure water stops flowing, the force-bearing float 1708 will still keep tightening the tie 1707 under its own gravity.

[0036] like Figure 1-Figure 8 As shown, the emergency treatment assembly 17 also includes a rubber bag 1711 and a micro pump 1712. The micro pump 1712 is fixed to the side of the wrapping frame 1704 away from the electric telescopic rod 1709. The rubber bag 1711 is arranged inside the annular groove 1706. The rubber bag 1711 is connected to the micro pump 1712 through a pipeline, and the rubber bag 1711 is arranged on the outside of the cable tie 1707.

[0037] The specific operation is as follows: when the cable tie 1707 is tightened to prevent the bubbling area from further expanding, the faster the pure water flow rate, the greater the tightening force of the cable tie 1707. Conversely, the slower the flow rate, the smaller the tightening force of the cable tie 1707. The minimum tightening force of the cable tie 1707 is the winding force caused by the gravity of the force-bearing float 1708. When the pure water flow rate is insufficient, the micro pump 1712 injects pure water into the rubber bag 1711, so that the rubber bag 1711 bulges and is tightly attached to the surface of the membrane sleeve 16 on both sides of the bubble, so as to cooperate with the cable tie 1707 to enhance the restriction effect on the bubbling area.

[0038] In summary, when the heating device for providing oil well recovery rate is used, first the first stop valve 5 is opened and the main pump 4 is operated, at this time the auxiliary pump 6 and the second stop valve 7 are closed, so that the pure water inside the water storage tank 2 enters the water collecting pipe 8 along the pipeline and is passed into the heating module 9 for heating. After the pure water temperature is heated to 70 degrees Celsius, it enters the heat exchanger 12 along the insulation pipe 11. At the same time, the crude oil enters the oil pipeline 13 from the oil inlet 14 and flows along the inside to pass through the heat exchanger 12. At this time, the hot pure water inside the heat exchanger 12 exchanges heat with the crude oil inside the oil pipeline 13 during the process of flowing along the outer wall of the oil pipeline 13. The pure water after heat exchange returns to the water storage tank 2 and enters the next cycle, and the crude oil inside the oil pipeline 13 is discharged from the oil outlet 15 after being heated.

[0039] When the circuit of the main pump 4 fails, the first stop valve 5 is closed, while the auxiliary pump 6 and the second stop valve 7 are opened, so that the pure water enters the water collecting pipe 8 along the circuit of the auxiliary pump 6 and passes into the heating module 9 for heating, thereby not delaying the crude oil transportation and facilitating the maintenance of the circuit of the main pump 4 at the same time;

[0040] A membrane sleeve 16 is provided on the outer wall of the oil pipeline 13. When pure water flows along the inner part of the water cavity, the temperature penetrates the membrane sleeve 16 and contacts the oil pipeline 13, thereby adding a sealing measure to the surface of the oil pipeline 13 without reducing the effect of temperature conduction. At the same time, the intermittent drive motor 1701 drives the screw rod 1702 to rotate clockwise or counterclockwise so that the movable sleeve seat 1703 carries the package sleeve frame 1704 to slide back and forth along the outer wall of the membrane sleeve 16, thereby regularly capturing the surface conditions of the membrane sleeve 16 through the underwater visual camera 1705 and transmitting it back to the background. When a bulge is captured on the surface of the membrane sleeve 16, it indicates that gas or crude oil is leaking, thereby timely warning is given through the APP, and the leakage position can be quickly located based on the bulge position;

[0041] When bubbles are found, the two wrapping sleeve frames 1704 approach from both sides and stay on both sides of the bubble part. At this time, the electric telescopic rod 1709 extends to make the clamping plate 1710 loosen the clamping of the exposed end of the tie 1707. At this time, the force-bearing float 1708 moves synchronously under the action of the flow of pure water, so that the exposed end of the tie 1707 is stressed and its inner mouth is tightened, thereby making the tie 1707 on both sides of the bubble on the surface of the membrane sleeve 16 to avoid further expansion of the bubble part. In addition, the force-bearing float 1708 will always tighten the tie 1707 based on the continuous flow of pure water to prevent it from loosening, thereby providing sufficient time for subsequent maintenance personnel to arrive for emergency repairs. During emergency repairs, even if the pure water stops flowing, the force-bearing float 1708 will still keep tightening the tie 1707 under its own gravity;

[0042] When the cable tie 1707 is tightened to prevent the bubbling area from further expanding, the faster the pure water flow rate, the greater the tightening force of the cable tie 1707, and vice versa, the slower the flow rate, the smaller the tightening force of the cable tie 1707. The minimum tightening force of the cable tie 1707 is the winding force caused by the gravity of the force-bearing float 1708. When the pure water flow rate is insufficient, the micro pump 1712 injects pure water into the rubber bag 1711, so that the rubber bag 1711 bulges and is tightly attached to the surface of the membrane sleeve 16 on both sides of the bubble, so as to cooperate with the cable tie 1707 to enhance the limiting effect on the bubbling area.

[0043] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A heating device for improving oil well recovery rate, comprising a heating box (1) and a heat exchanger (12), characterized in that: A water storage tank (2) is fixed to one side of the interior of the heating box (1), and the water storage tank (2) is connected to a three-way valve (3) through a pipeline; one end of the three-way valve (3) is connected to a main pump (4) and a first stop valve (5) in sequence through a pipeline, and the other end of the three-way valve (3) is connected to an auxiliary pump (6) and a second stop valve (7) in sequence through a pipeline; one end of the first stop valve (5) and the second stop valve (7) are commonly connected to a water collecting pipe (8), and the outer wall of the water collecting pipe (8) is connected to a heating module (9); one side of the heating module (9) is connected to an explosion-proof distribution box (10); the top of the heating module (9) is connected to an insulation pipe (11), and the end of the insulation pipe (11) away from the heating module (9) is connected to a heat exchanger (12); an oil delivery pipe (13) is passed through the interior of the heat exchanger (12), and one end of the oil delivery pipe (13) is provided with an oil inlet (14), and the other end of the oil delivery pipe (13) is provided with a The oil outlet (15) is connected to the water storage tank (2) at the bottom of the heat exchanger (12) through a pipeline. A water-passing cavity is provided between the outer wall of the oil delivery pipe (13) and the inner wall of the heat exchanger (12). The outer wall of the oil delivery pipe (13) is provided with a membrane sleeve (16). An emergency treatment component (17) is provided inside the water-passing cavity. The emergency treatment component (17) is provided with two groups in total. The emergency treatment component (17) includes a drive motor (1701), a screw rod (1702), a movable sleeve seat (1703), a wrapping sleeve frame (1704) and an underwater visual camera (1705), the end of the driving motor (1701) is connected to a screw rod (1702), and the outer wall of the screw rod (1702) is sleeved with a movable sleeve seat (1703), the outer wall of the movable sleeve seat (1703) is provided with a wrapping sleeve frame (1704), and underwater visual cameras (1705) are fixed on both sides of the wrapping sleeve frame (1704).

2. A heating device for improving oil well recovery rate according to claim 1, characterized in that: The wrapping frame (1704) is sleeved on the outer wall of the membrane sleeve (16), and the underwater visual cameras (1705) are distributed in a ring shape on both sides of the wrapping frame (1704).

3. The heating device for improving oil well recovery rate according to claim 1, characterized in that: The emergency handling component (17) further comprises an annular groove (1706), a cable tie (1707) and a force-bearing floating ball (1708); the interior of the wrapping frame (1704) is provided with an annular groove (1706), and the interior of the annular groove (1706) is provided with a cable tie (1707); one end of the cable tie (1707) passes through the other end thereof and is connected to the force-bearing floating ball (1708).

4. A heating device for improving oil well recovery rate according to claim 3, characterized in that: The force-bearing floating ball (1708) is located inside the water-passing cavity, and the water-passing cavity is connected to the insulation pipe (11) and the water storage tank (2).

5. A heating device for improving oil well recovery rate according to claim 4, characterized in that: The emergency handling assembly (17) further comprises an electric telescopic rod (1709) and a clamping plate (1710); the electric telescopic rod (1709) is fixed to one side of the wrapping frame (1704), and the end of the electric telescopic rod (1709) is connected to the clamping plate (1710).

6. A heating device for improving oil well recovery rate according to claim 5, characterized in that: The emergency treatment component (17) further comprises a rubber bag (1711) and a micro pump (1712); the micro pump (1712) is fixed to a side of the wrapping frame (1704) away from the electric telescopic rod (1709); and the rubber bag (1711) is arranged inside the annular groove (1706).

7. A heating device for improving oil well recovery rate according to claim 6, characterized in that: The rubber bag (1711) is connected to the micro pump (1712) through a pipeline, and the rubber bag (1711) is arranged outside the cable tie (1707).

Images