Heat preservation sucker rod capable of automatically adjusting temperature

Abstract

The utility model provides a heat preservation sucker rod capable of automatically adjusting temperature, which relates to the technical field of petroleum engineering equipment and comprises a sucker rod outer pipe, an oil pumping pipe inner pipe is fixedly inserted in the sucker rod outer pipe, an inner pipe guide plate is fixedly connected in the oil pumping pipe inner pipe, and a fixed one-way valve is mounted on the inner pipe guide plate in a penetrating manner. The water inlet end of the fixed one-way valve faces downwards, an inner pipe port is formed in the bottom of the pipe wall of the oil pumping pipe inner pipe, when the lifting frequency of the oil pumping rod is increased, the lifting frequency of the built-in lifting piston is also increased, the circulation speed of hot water in the oil pumping rod is increased, and the oil heating and viscosity reducing efficiency of the oil pumping rod is further improved. The problems that due to the fact that the heating mode of a traditional heat preservation sucker rod cannot be automatically adjusted according to the lifting and stretching frequency of an oil pumping pipe, the heating effect on oil liquid in the oil pumping process is reduced along with the improvement of the oil pumping efficiency and the improvement of the flowing speed of the oil liquid, the viscosity of the oil liquid cannot be reduced, and the dewaxing and condensation probability is increased are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum engineering equipment technical field especially relates to a self -adjusting temperature's heat preservation sucker rod. BACKGROUND

[0002] In the oil exploitation process, the sucker rod is responsible for controlling wellhead hydraulic discharge, ensures the normal progress of the oil production process, it bears the weight of the oil production pump, and is lifted to the wellhead, realizes the continuous stable oil production operation, the heat preservation sucker rod usually designs the hollow structure, can inject the heat source to its inside, such as hot water etc., carries out the warming to the sucker rod, makes the thick oil carry out the heating and reduces the viscosity, thereby improves the flowability of the crude oil, reduces the dewaxing condensation phenomenon.

[0003] The warming mode of the traditional heat preservation sucker rod is that hot water is delivered to the inside of the sucker rod through the water pump, the flow of the hot water delivery is fixed, cannot carry out the self -adjusting according to the sucker tube lifting telescopic frequency, cannot increase the heat supply efficiency to the sucker rod along with the improvement of the oil pumping efficiency, leads to along with the improvement of the oil pumping efficiency, the flow velocity of the oil liquid improves, the warming effect to the oil liquid in the oil pumping process will reduce, will lead to the oil liquid viscosity can not reduce, increases the dewaxing condensation probability. SUMMARY

[0004] The embodiment of the disclosure relates to a kind of heat preservation sucker rods of self -adjusting temperature, to solve the warming mode of the traditional heat preservation sucker rod is that hot water is delivered to the inside of the sucker rod through the water pump, the flow of the hot water delivery is fixed, cannot carry out the self -adjusting according to the sucker tube lifting telescopic frequency, cannot increase the heat supply efficiency to the sucker rod along with the improvement of the oil pumping efficiency, leads to along with the improvement of the oil pumping efficiency, the flow velocity of the oil liquid improves, the warming effect to the oil liquid in the oil pumping process will reduce, will lead to the oil liquid viscosity can not reduce, increases the dewaxing condensation probability Problem.

[0005] The first aspect of the present disclosure provides a kind of heat preservation sucker rods of self -adjusting temperature, specifically including: sucker rod outer tube, the inside of the sucker rod outer tube is fixedly inserted with sucker tube inner tube, the inside of sucker tube inner tube is fixedly connected with inner tube guide plate, inner tube guide plate is installed with fixed check valve, the water inlet end of fixed check valve is downward, the bottom of the pipe wall of sucker tube inner tube is provided with inner tube mouth, the bottom of the sucker rod outer tube is fixedly connected with the sucker rod plunger, the inside of the sucker tube inner tube is slidably connected with built-in lifting piston, the built-in lifting piston is installed with movable check valve, the water inlet end of movable check valve is downward, the upper portion of built-in lifting piston is fixedly connected with return spring, the upper end of return spring is fixedly connected with inner tube guide plate.

[0006] In at least some embodiments, the center of the inner tube guide plate is provided with an inner tube guide hole, the upper end of the built-in lifting piston is fixedly connected with a piston guide rod, and the piston guide rod is slidably connected with the inner tube guide hole.

[0007] In at least some embodiments, the right side of the sucker rod outer tube is fixedly connected with a water outlet interface and a water inlet interface, the water inlet interface is fixedly connected with a water inlet check valve inside, and the water outlet end of the water inlet check valve faces the sucker rod outer tube.

[0008] In at least some embodiments, the sucker rod inner tube wall is fixedly connected with a water outlet connecting pipe, and the outer end of the water outlet connecting pipe is fixedly connected inside the water outlet interface.

[0009] In at least some embodiments, the water outlet interface is also fixedly connected with a water outlet check valve inside, and the water outlet end of the water outlet check valve faces the built-in lifting piston.

[0010] In at least some embodiments, the built-in lifting piston is fixedly connected with a counterweight column below.

[0011] The utility model provides a kind of temperature self-adjusting heat preservation sucker rod, with following beneficial effects:

[0012] The heat preservation sucker rod in the utility model is double-layer hollow structure, and the inner layer and the outer layer of the sucker rod are communicated, and the water inlet end and the water outlet end of the circulating heater are connected respectively, so that hot water circulates in the sucker rod, and then the sucker rod is heated, and the oil is heated and viscosity is reduced by the contact between the sucker rod and the oil, so that the oil dewaxing and condensation are avoided.

[0013] In the utility model, the built-in lifting piston is arranged inside the sucker rod inner tube, and the built-in lifting piston slides up and down inside the sucker rod inner tube under the action of inertia when the sucker rod is lifted and lowered by the driving of the oil pumping equipment, the water inlet check valve and the fixed check valve are closed, and the movable check valve is opened when the built-in lifting piston slides downward, and the hot water below the built-in lifting piston passes through the movable check valve and enters above the built-in lifting piston, and the movable check valve is closed, and the water inlet check valve and the fixed check valve are opened when the built-in lifting piston slides upward, and the water between the inner tube guide plate and the built-in lifting piston is squeezed to the upper side of the inner tube guide plate by the built-in lifting piston, the water in the sucker rod inner tube is returned to the circulating heater for heating by the up-and-down floating of the built-in lifting piston, and then the hot water circulates in the sucker rod, and the sucker rod is continuously heated.

[0014] In addition, the lifting frequency and the lifting amplitude of the built-in lifting piston change with the lifting frequency of the sucker rod, and the lifting frequency of the built-in lifting piston increases when the lifting frequency of the sucker rod increases, so that the circulation speed of the hot water in the sucker rod increases, the heating and viscosity reduction efficiency of the oil by the sucker rod is further improved, and the heating effect of the oil during the oil pumping process is reduced with the improvement of the oil pumping efficiency of the sucker rod, so that the viscosity of the oil cannot be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows.

[0016] The drawings described in the following merely relate to some embodiments of the present application, and are not a limitation to the present application.

[0017] In the drawings:

[0018] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0019] Figure 2 A schematic diagram showing the internal structure of the present application is shown;

[0020] Figure 3 A schematic diagram showing the structure of the built-in lifting piston of the present application is shown;

[0021] Figure 4 A schematic diagram showing the structure of the inner tube through port of the present application is shown;

[0022] Figure 5 A schematic diagram showing the structure of the inner tube guide plate of the present application is shown;

[0023] Figure 6 A schematic diagram showing the structure of the one-way valve orientation of the present application is shown;

[0024] Figure 7 A schematic diagram showing the structure of the present application is shown; Figure 2 A partially enlarged schematic diagram of position A in the present application is shown;

[0025] Figure 8 A partially enlarged schematic diagram of position B in the present application is shown; Figure 2

[0026] A partially enlarged schematic diagram of position C in the present application is shown; Figure 9 Figure 2 A partially enlarged schematic diagram of position D in the present application is shown.

[0027] Figure 10 A partially enlarged schematic diagram of position D in the present application is shown. Figure 4 List of reference signs

[0028]

[0029] ​​1, sucker rod outer tube;101, drainage interface;102, water inlet interface;103, water inlet check valve;2, sucker rod inner tube;201, inner tube guide plate;202, inner tube guide hole;203, fixed check valve;204, inner tube opening;205, drainage connecting pipe;206, drainage check valve;3, sucker rod plunger;4, circulating heater;5, built-in lifting piston;501, counterweight column;502, piston guide rod;503, movable check valve;504, reset tension spring. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0031] Embodiment one: please refer to Figures 1 to 10 :

[0032] The utility model provides a kind of temperature self-regulation heat preservation sucker rod, comprising: sucker rod outer tube 1, fixed plug-in with sucker rod inner tube 2 in the inside of sucker rod outer tube 1, inner tube guide plate 201 is fixedly connected in the inside of sucker rod inner tube 2, fixed check valve 203 is installed through inner tube guide plate 201, the water inlet end of fixed check valve 203 is downward, inner tube opening 204 is set in the bottom of the wall of sucker rod inner tube 2, the bottom of sucker rod outer tube 1 is fixedly connected with sucker rod plunger 3, built-in lifting piston 5 is slidably connected in the inside of sucker rod inner tube 2, movable check valve 503 is installed through built-in lifting piston 5, the water inlet end of movable check valve 503 is downward, reset tension spring 504 is fixedly connected above built-in lifting piston 5, and the upper end of reset tension spring 504 is fixedly connected with inner tube guide plate 201;During the lifting of sucker rod, built-in lifting piston 5 slides up and down in the inside of sucker rod inner tube 2 under the action of inertia, when built-in lifting piston 5 slides downward, water inlet check valve 103 and fixed check valve 203 are closed, and movable check valve 503 is opened, hot water below built-in lifting piston 5 passes movable check valve 503 and enters above built-in lifting piston 5, and when built-in lifting piston 5 slides upward, movable check valve 503 is closed, and water inlet check valve 103 and fixed check valve 203 are opened, and water between inner tube guide plate 201 and built-in lifting piston 5 is extruded to the upper side of inner tube guide plate 201 by built-in lifting piston 5;With the up-and-down floating of built-in lifting piston 5, the water in the inside of sucker rod inner tube 2 is refluxed to the inside of circulating heater 4 and heated, to realize the circulation of hot water in the inside of sucker rod, and continuously heat the sucker rod.

[0033] In the embodiment of the present disclosure, the inner tube guide hole 202 is arranged through the center of the inner tube guide plate 201, the upper end of the built-in lifting piston 5 is fixedly connected with a piston guide rod 502, the piston guide rod 502 is slidingly connected with the inner tube guide hole 202, plays a guiding role, and enables the built-in lifting piston 5 to move vertically and linearly inside the oil pumping tube inner tube 2, thereby avoiding the built-in lifting piston 5 from being inclined.

[0034] In the embodiment of the present disclosure, the right side of the oil pumping rod outer tube 1 is fixedly connected with a water outlet interface 101 and a water inlet interface 102, the water inlet interface 102 is fixedly connected with a water inlet check valve 103 inside, the water outlet end of the water inlet check valve 103 faces the oil pumping rod outer tube 1, the water outlet interface 101 and the water inlet interface 102 are respectively connected with the water return end and the output end of the circulating heater 4 through pipelines, the water outlet pipe 205 is fixedly connected to the inner wall of the oil pumping tube inner tube 2, the outer end of the water outlet pipe 205 is fixedly connected inside the water outlet interface 101, the water outlet interface 101 is further fixedly connected with a water outlet check valve 206, and the water outlet end of the water outlet check valve 206 faces the built-in lifting piston 5; the cold water inside the oil pumping tube inner tube 2 flows back to the inside of the circulating heater 4 through the water outlet pipe 205 and the water outlet interface 101, and the hot water of the circulating heater 4 is input to the inside of the oil pumping rod outer tube 1 through the water inlet interface 102, so as to heat the outer wall of the oil pumping rod outer tube 1.

[0035] In the embodiment of the present disclosure, the lower end of the built-in lifting piston 5 is fixedly connected with a counterweight column 501; the counterweight column 501 is a solid metal cylinder, increases the inertia generated during the lifting of the built-in lifting piston 5, increases the lifting amplitude and intensity of the built-in lifting piston 5, and increases the pushing efficiency of the hot water.

[0036] The working principle of the embodiment is as follows: first, the upper end of the pumping rod is connected with the oil pumping device, and the circulating heater 4 is fixedly connected with the oil pumping device; when the pumping rod is driven to move up and down by the oil pumping device, the lifting piston 5 inside the inner tube 2 of the pumping pipe moves up and down inside the inner tube 2 of the pumping pipe under the action of inertia; when the built-in lifting piston 5 slides downward, the water inlet one-way valve 103 and the fixed one-way valve 203 are closed, and the movable one-way valve 503 is opened; the hot water below the built-in lifting piston 5 passes through the movable one-way valve 503 and enters above the built-in lifting piston 5, and when the built-in lifting piston 5 slides upward, the movable one-way valve 503 is closed, and the water inlet one-way valve 103 and the fixed one-way valve 203 are opened; the water between the inner tube guide plate 201 and the built-in lifting piston 5 is extruded to the upper side of the inner tube guide plate 201 by the built-in lifting piston 5; with the up-and-down floating of the built-in lifting piston 5, the water in the inner tube 2 of the pumping pipe flows back to the inside of the circulating heater 4 for heating, thereby realizing the circulation of hot water in the pumping rod, continuously heating the pumping rod, and as the lifting frequency of the pumping rod increases, the lifting frequency of the built-in lifting piston 5 also increases, so that the circulation speed of the hot water in the pumping rod increases, further increasing the heating and viscosity reduction efficiency of the pumping rod on the oil.

[0037] In this paper, the following points need to be noted:

[0038] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0039] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A self-regulating temperature-insulating sucker rod, comprising: The sucker rod outer tube (1) is characterized in that an inner sucker tube (2) is fixedly inserted inside the outer sucker rod tube (1), an inner tube guide plate (201) is fixedly connected inside the inner sucker tube (2), a fixed one-way valve (203) is installed through the inner tube guide plate (201), the water inlet end of the fixed one-way valve (203) faces downward, an inner tube port (204) is opened at the bottom of the tube wall of the inner sucker tube (2), a sucker rod plunger (3) is fixedly connected to the bottom of the outer sucker rod tube (1), an internal lifting piston (5) is slidably connected inside the inner sucker tube (2), a movable one-way valve (503) is installed through the internal lifting piston (5), the water inlet end of the movable one-way valve (503) faces downward, a reset spring (504) is fixedly connected above the internal lifting piston (5), and the upper end of the reset spring (504) is fixedly connected to the inner tube guide plate (201).

2. The self-regulating temperature-insulating sucker rod according to claim 1, characterized in that, The inner tube guide plate (201) has an inner tube guide hole (202) through the center. The upper end of the built-in lifting piston (5) is fixedly connected to a piston guide rod (502), and the piston guide rod (502) is slidably connected to the inner tube guide hole (202).

3. The self-regulating temperature-insulating sucker rod according to claim 1, characterized in that, The right side of the sucker rod outer tube (1) is fixedly connected to a drain port (101) and a water inlet port (102). The water inlet port (102) is fixedly connected to a water inlet check valve (103). The outlet end of the water inlet check valve (103) faces the sucker rod outer tube (1). The drain port (101) and the water inlet port (102) are respectively connected to the return end and the output end of the circulating heater (4) through pipes.

4. A self-regulating temperature-insulating sucker rod according to claim 3, characterized in that, A drain pipe (205) is fixedly connected to the inner pipe (2) of the oil extraction pipe, and the outer end of the drain pipe (205) is fixedly connected to the inside of the drain interface (101).

5. A self-regulating temperature-insulating sucker rod according to claim 3, characterized in that, The drain interface (101) is also fixedly connected to a drain check valve (206), with the outlet end of the drain check valve (206) facing the built-in lifting piston (5).

6. A self-regulating temperature-insulating sucker rod according to claim 1, characterized in that, A counterweight column (501) is fixedly connected to the lower part of the built-in lifting piston (5).

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