Oilfield chemical agent shaft dosing device

Abstract

The utility model discloses an oilfield chemical agent shaft dosing device, which belongs to the technical field of oilfields and comprises a dosing tank, a stirring rod is arranged in the middle of the dosing tank, a driving motor is bolted to the top of the dosing tank, and the output end of the driving motor is fixedly connected with the stirring rod. A stirring rod is arranged at the bottom of the dosing tank, a stirring roller and a scraping plate are fixedly connected to the side wall of the stirring rod, a liquid outlet pipe is arranged at the bottom of the dosing tank, a heating and heat preservation mechanism is arranged on the side wall of the dosing tank, a mixed feeding mechanism is arranged at the top of the dosing tank, and a feeding assembly is arranged at the top of the dosing tank. According to the low-temperature medicine adding device, the medicine adding tank can be heated and subjected to heat preservation treatment, the medicine mixing and dissolving speed is increased, medicine liquid is effectively prevented from being frozen or precipitated in the low-temperature environment, and the medicine adding effect on the medicine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fields, in particular to a wellbore chemical dosing device for oil fields. Background Art

[0002] With the development of the petroleum industry and the continuous innovation of oil field exploitation technologies, the demand for improving oil field exploitation efficiency, extending the service life of oil wells, and improving the quality of oil products is also increasing day by day. During the oil field exploitation process, various chemical agents often need to be injected into the wellbore to achieve purposes such as cleaning the well wall, preventing scale formation, and adjusting the oil-water ratio. When dosing, various liquid medicines and water need to be fully mixed to improve the use effect of the medicines. Usually, a dosing device is used to mix and store the medicines.

[0003] When the existing dosing device is in use, the mixing effect of the liquid medicine is poor, resulting in the inability of the stirred liquid medicine to be fully fused, thus affecting the use effect. At the same time, when the liquid medicine is stored and used in the shell, a large amount of residual liquid medicine is easily adhered to the inner wall of the shell, resulting in a decrease in the utilization rate of the liquid medicine. After long-term use, the liquid medicine is prone to caking on the inner wall of the shell, affecting the service life of the shell;

[0004] The existing patent (publication number: CN215027808U), an efficient dosing device for oil well wellbores, drives the hollow tube to rotate through the first motor driving the connecting frame, and then drives the stirring rod to rotate through the hollow tube to stir the liquid medicine inside the shell in the horizontal direction. At the same time, the second motor drives the rotating shaft to make the second gear rotate, and then the corresponding first gear rotates through the second gear, so that the stirring rod drives the limiting ring and the fixing plate to rotate together, thereby stirring the liquid medicine inside the shell in the vertical direction. Through double stirring, the stirring effect is improved, and the liquid medicine is fully fused.

[0005] In view of the above problems, the existing patent gives a solution, but there are problems that the liquid medicine cannot be heated and insulated, because the environment where the oil well wellbore is located is harsh, and the liquid medicine often freezes and precipitates, and there are also problems of long mixing time and low efficiency of the liquid medicine.

[0006] Therefore, a wellbore chemical dosing device for oil fields is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a wellbore chemical dosing device for oil fields, which can solve the problems that the existing efficient dosing device for oil well wellbores cannot heat and insulate the liquid medicine, because the environment where the oil well wellbore is located is harsh, and the liquid medicine often freezes and precipitates, and there are also problems of long mixing time and low efficiency of the liquid medicine.

[0008] To achieve the above object, the present utility model provides the following technical solution: An oilfield chemical wellbore dosing device, which includes a dosing tank. A stirring rod is arranged in the middle of the dosing tank. A driving motor is bolted to the top of the dosing tank. The output end of the driving motor is fixedly connected to the stirring rod. Stirring rollers and scraping plates are fixedly connected to the side wall of the stirring rod. A liquid outlet pipe is arranged at the bottom of the dosing tank. A heating and heat preservation mechanism is arranged on the side wall of the dosing tank. A mixing and feeding mechanism is arranged on the top of the dosing tank. A feeding assembly is arranged on the top of the dosing tank;

[0009] The heating and heat preservation mechanism includes a heat preservation tank, a spiral pipe, a heating tank, a liquid inlet pipe, a heater, a spiral heating pipe and a heat preservation assembly. The heat preservation tank is fixedly connected to the side wall of the dosing tank. The spiral pipe is arranged on the side wall of the dosing tank. Both ends of the spiral pipe extend to the outside of the heat preservation tank. The heating tank is fixedly connected to the side wall of the heat preservation tank and is connected to the top of the spiral pipe in a through manner. The liquid inlet pipe is arranged at the top of the heating tank. The heater is arranged at the top of the heating tank. The spiral heating pipe is arranged at the bottom of the heater and is located inside the heating tank. The heat preservation assembly is arranged on the side wall of the dosing tank.

[0010] Preferably, the heat preservation assembly includes a heat preservation cover, a water inlet pipe, a drain pipe, a top tank and a connecting pipe. The heat preservation cover is fixedly connected to the side wall of the dosing tank. The spiral pipe is located inside the heat preservation cover. The water inlet pipe is arranged at the top of the heat preservation cover. The drain pipe is arranged at the bottom of the heat preservation cover. The top tank is fixedly connected to the top of the water inlet pipe. The connecting pipe is arranged on the side wall of the top tank.

[0011] Preferably, the mixing and feeding mechanism includes a mixing cylinder, a feeding pipe, a stirring motor, a stirring shaft, stirring blades and spiral blades. The mixing cylinder is fixedly connected to the top of the dosing tank. Two feeding pipes are arranged on the side wall of the mixing cylinder. The stirring motor is bolted to the top of the mixing cylinder. The stirring shaft is fixedly connected to the output end of the stirring motor and is connected to the mixing cylinder through bearings. A plurality of stirring blades are fixedly connected to the side wall of the stirring shaft. The spiral blades are fixedly connected to the side wall of the stirring shaft.

[0012] Preferably, the feeding assembly includes a feeding port, a locking frame and a top cover. The feeding port is arranged at the top of the dosing tank. One end of the locking frame is hinged to the side wall of the feeding port and the other end is bolted to the feeding port in a matching manner. The top cover is hinged to the middle of the locking frame. The top cover is adapted to the feeding port.

[0013] Preferably, a pressure relief valve is arranged on the side wall of the top tank.

[0014] Preferably, a liquid level observation port is arranged on the side wall of the top tank.

[0015] Preferably, two first temperature gauges are provided at the bottom of the chemical addition tank, and the two first temperature gauges are symmetrically arranged.

[0016] Preferably, a second temperature gauge is provided on the side wall of the heat preservation cover.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. In this application, by providing a heating and heat preservation mechanism, the chemical addition tank can be heated and heat-preserved during this process, which improves the mixing and dissolution speed of the chemical agent, effectively prevents the liquid medicine from freezing or precipitating in a low-temperature environment, and improves the chemical addition effect of the chemical agent.

[0019] 2. In this application, by providing a mixing and feeding mechanism, various chemical agents and water can be pre-mixed and stirred before being injected into the chemical addition tank during this process, which can reduce the subsequent stirring and mixing time of the chemical agent and improve the mixing efficiency of the chemical agent. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the overall structural view of the present utility model;

[0022] Figure 2 It is the left view of the present utility model;

[0023] Figure 3 For the present utility model Figure 2 The three-dimensional sectional view at A-A in;

[0024] Figure 4 It is the structural view of the heat preservation component of the present utility model;

[0025] Figure 5 It is the structural view of the feeding component of the present utility model.

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Chemical dosing tank; 2. Stirring rod; 3. Driving motor; 4. Stirring roller; 5. Scraper; 6. Liquid outlet pipe; 7. Heating and insulation mechanism; 8. Mixing and feeding mechanism; 9. Feeding assembly; 71. Insulation tank; 72. Spiral pipe; 73. Heating tank; 74. Liquid inlet pipe; 75. Heater; 76. Spiral heating pipe; 77. Insulation assembly; 781. Insulation cover; 782. Water inlet pipe; 783. Drain pipe; 784. Top tank; 785. Connecting pipe; 81. Mixing cylinder; 82. Feed pipe; 83. Stirring motor; 84. Stirring shaft; 85. Stirring blade; 86. Spiral blade; 91. Feeding port; 92. Locking frame; 93. Top cover; 10. Air release valve; 11. Liquid level observation port; 12. Thermometer 1; 13. Thermometer 2. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 to 5 , the present invention provides a technical solution:

[0030] An oilfield chemical wellbore chemical dosing device includes a chemical dosing tank 1. A stirring rod 2 is arranged in the middle of the chemical dosing tank 1. A driving motor 3 is bolted to the top of the chemical dosing tank 1. The output end of the driving motor 3 is fixedly connected to the stirring rod 2. A stirring roller 4 and a scraper 5 are fixedly connected to the side wall of the stirring rod 2. A liquid outlet pipe 6 is arranged at the bottom of the chemical dosing tank 1. A heating and insulation mechanism 7 is arranged on the side wall of the chemical dosing tank 1. A mixing and feeding mechanism 8 is arranged on the top of the chemical dosing tank 1. A feeding assembly 9 is arranged on the top of the chemical dosing tank 1;

[0031] The heating and insulation mechanism 7 includes an insulation tank 71, a spiral pipe 72, a heating tank 73, a liquid inlet pipe 74, a heater 75, a spiral heating pipe 76 and an insulation assembly 77. The insulation tank 71 is fixedly connected to the side wall of the chemical dosing tank 1. The spiral pipe 72 is arranged on the side wall of the chemical dosing tank 1. Both ends of the spiral pipe 72 extend to the outside of the insulation tank 71. The heating tank 73 is fixedly connected to the side wall of the insulation tank 71 and is connected to the top of the spiral pipe 72 in a through manner. The liquid inlet pipe 74 is arranged on the top of the heating tank 73. The heater 75 is arranged on the top of the heating tank 73. The spiral heating pipe 76 is arranged at the bottom of the heater 75 and is located inside the heating tank 73. The insulation assembly 77 is arranged on the side wall of the chemical dosing tank 1.

[0032] Specifically, as Figure 4As shown in the figure, the heat preservation assembly 77 includes a heat preservation cover 781, a water inlet pipe 782, a drain pipe 783, a top tank 784 and a connecting pipe 785. The heat preservation cover 781 is fixedly connected to the side wall of the chemical dosing tank 1. The spiral pipe 72 is located inside the heat preservation cover 781. The water inlet pipe 782 is arranged at the top of the heat preservation cover 781. The drain pipe 783 is arranged at the bottom of the heat preservation cover 781. The top tank 784 is fixedly connected to the top of the water inlet pipe 782. The connecting pipe 785 is arranged on the side wall of the top tank 784.

[0033] Specifically, as Figure 5 shown, the feeding assembly 9 includes a feeding port 91, a locking frame 92 and a top cover 93. The feeding port 91 is arranged at the top of the chemical dosing tank 1. One end of the locking frame 92 is hinged to the side wall of the feeding port 91 and the other end is bolted to the feeding port 91. The top cover 93 is hinged to the middle of the locking frame 92. The top cover 93 is adapted to the feeding port 91.

[0034] Specifically, as Figure 4 shown, a pressure relief valve 10 is arranged on the side wall of the top tank 784.

[0035] Specifically, as Figure 4 shown, a liquid level observation port 11 is arranged on the side wall of the top tank 784.

[0036] Specifically, as Figure 4 shown, two first temperature gauges 12 are arranged at the bottom of the chemical dosing tank 1. The two first temperature gauges 12 are symmetrically arranged.

[0037] Specifically, as Figure 4 shown, a second temperature gauge 13 is arranged on the side wall of the heat preservation cover 781.

[0038] During use, heating liquid is injected into the interior of the heating tank 73 through the liquid inlet pipe 74. The external power supply is connected to start the heater 75, and the spiral heating pipe 76 heats the heating liquid inside the heating tank 73. The heated liquid flows into the spiral pipe 72. As the heating liquid circulates inside the spiral pipe 72, the liquid medicine inside the medicine adding tank 1 can be heated through heat transfer. The medicine adding tank 1 can be insulated by the heat preservation tank 71. By injecting water into the interior of the top tank 784, the water enters the interior of the heat preservation cover 781 through the water inlet pipe 782, and the spiral pipe 72 heats the water source inside the heat preservation cover 781. The large specific heat capacity of water can provide heat preservation protection for the medicine adding tank 1. The high-temperature gas inside the top tank 784 can be depressurized through the air release valve 10. The liquid level inside the top tank 784 can be conveniently observed through the liquid level observation port 11. By opening the locking frame 92, the top cover 93 is separated from the feeding port 91, and various solid medicine raw materials can be conveniently added into the medicine adding tank 1 through the feeding port 91. The driving motor 3 drives the stirring rod 2 to rotate, and the stirring roller 4 and the scraping plate 5 stir and mix the medicine inside the medicine adding tank 1 and scrape and clean the inner wall of the medicine adding tank 1. In this way, heating and heat preservation treatment of the medicine adding tank 1 are realized, the mixing and dissolving speed of the medicine is increased, the freezing or precipitation of the liquid medicine in a low-temperature environment is effectively prevented, and the medicine adding effect of the medicine is improved.

[0039] Specifically, as Figure 3 shown, the mixed feeding mechanism 8 includes a mixing cylinder 81, a feeding pipe 82, a stirring motor 83, a stirring shaft 84, stirring blades 85 and a spiral blade 86. The mixing cylinder 81 is fixedly connected to the top of the medicine adding tank 1. Two feeding pipes 82 are arranged on the side wall of the mixing cylinder 81. The stirring motor 83 is bolted to the top of the mixing cylinder 81. The stirring shaft 84 is fixedly connected to the output end of the stirring motor 83 and is connected to the mixing cylinder 81 through a bearing. A plurality of stirring blades 85 are fixedly connected to the side wall of the stirring shaft 84. The spiral blade 86 is fixedly connected to the side wall of the stirring shaft 84.

[0040] During use, the feeding pipe 82 is connected to an external feeding device, the medicine enters the interior of the mixing cylinder 81, the stirring motor 83 drives the stirring shaft 84 to rotate, the stirring blades 85 pre-mix various medicines, and the spiral blade 86 assists in re-mixing the medicines. In this way, various medicines and water can be pre-mixed and stirred before being injected into the medicine adding tank 1, which can reduce the subsequent stirring and mixing time of the medicine and improve the mixing efficiency of the medicine.

[0041] By adopting the above technical solution, the problem that the existing high-efficiency medicine adding device for oil well shafts cannot heat and keep warm the liquid medicine is solved. Due to the harsh environment of the oil field well shafts, the problems of freezing and precipitation of the liquid medicine often occur, and at the same time, the mixing time of the liquid medicine is long and the efficiency is low.

[0042] Working principle: When this application is in use, first, the feed pipe 82 is connected to an external feeding device, and the medicament enters the interior of the mixing cylinder 81. The stirring motor 83 drives the stirring shaft 84 to rotate, and the stirring blades 85 pre-mix various medicaments. The spiral blades 86 assist in re-mixing the medicaments. In this way, various medicaments and water can be pre-mixed and stirred before being injected into the dosing tank 1. The driving motor 3 drives the stirring rod 2 to rotate, and the stirring rollers 4 and the scraping plates 5 stir and mix the medicaments inside the dosing tank 1 and scrape and clean the inner wall of the dosing tank 1. The heating liquid is injected into the interior of the heating tank 73 through the liquid inlet pipe 74, and the external power supply is connected to start the heater 75 so that the spiral heating pipe 76 heats the heating liquid inside the heating tank 73. The heated liquid flows into the spiral pipe 72. As the heating liquid circulates inside the spiral pipe 72, the liquid medicine inside the dosing tank 1 can be heated through heat transfer. The dosing tank 1 can be insulated by the heat preservation tank 71. By injecting water into the interior of the top tank 784, the water enters the interior of the heat preservation cover 781 through the water inlet pipe 782, and the spiral pipe 72 heats the water source inside the heat preservation cover 781. The large specific heat capacity of water can provide heat preservation protection for the dosing tank 1. In this way, the heating and heat preservation treatment of the dosing tank 1 are realized, the mixing and dissolution speed of the medicament is increased, the freezing or precipitation of the liquid medicine in a low-temperature environment is effectively prevented, and the dosing effect of the medicament is improved.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oilfield chemical wellbore dosing device, comprising a dosing tank (1), characterized in that: A stirring rod (2) is arranged in the middle of the dosing tank (1), a driving motor (3) is bolted to the top of the dosing tank (1), an output end of the driving motor (3) is fixedly connected to the stirring rod (2), a stirring roller (4) and a scraper (5) are fixedly connected to the side wall of the stirring rod (2), a liquid outlet pipe (6) is arranged at the bottom of the dosing tank (1), a heating and heat preservation mechanism (7) is arranged on the side wall of the dosing tank (1), a mixing and feeding mechanism (8) is arranged at the top of the dosing tank (1), and a feeding assembly (9) is arranged at the top of the dosing tank (1); The heating and heat preservation mechanism (7) comprises a heat preservation tank (71), a spiral tube (72), a heating tank (73), a liquid inlet pipe (74), a heater (75), a spiral heating tube (76) and a heat preservation component (77); the heat preservation tank (71) is fixedly connected to the side wall of the dosing tank (1); the spiral tube (72) is arranged on the side wall of the dosing tank (1); both ends of the spiral tube (72) extend to the outside of the heat preservation tank (71); the heating tank (73) is fixedly connected to the side wall of the heat preservation tank (71) and is connected to the top of the spiral tube (72); the liquid inlet pipe (74) is arranged on the top of the heating tank (73); the heater (75) is arranged on the top of the heating tank (73); the spiral heating tube (76) is arranged at the bottom of the heater (75) and is located inside the heating tank (73); and the heat preservation component (77) is arranged on the side wall of the dosing tank (1).

2. The oilfield chemical wellbore dosing device according to claim 1, characterized in that: The heat-insulating assembly (77) comprises a heat-insulating cover (781), a water inlet pipe (782), a drain pipe (783), a top tank (784) and a connecting pipe (785); the heat-insulating cover (781) is fixedly connected to the side wall of the dosing tank (1); the spiral tube (72) is located inside the heat-insulating cover (781); the water inlet pipe (782) is arranged at the top of the heat-insulating cover (781); the drain pipe (783) is arranged at the bottom of the heat-insulating cover (781); the top tank (784) is fixedly connected to the top of the water inlet pipe (782); and the connecting pipe (785) is arranged on the side wall of the top tank (784).

3. The oilfield chemical wellbore dosing device according to claim 1, characterized in that: The mixing and feeding mechanism (8) comprises a mixing barrel (81), a feeding pipe (82), a stirring motor (83), a stirring shaft (84), stirring blades (85) and spiral blades (86); the mixing barrel (81) is fixedly connected to the top of the dosing tank (1); the two feeding pipes (82) are arranged on the side wall of the mixing barrel (81); the stirring motor (83) is bolted to the top of the mixing barrel (81); the stirring shaft (84) is fixedly connected to the output end of the stirring motor (83) and connected to the bearing of the mixing barrel (81); the plurality of stirring blades (85) are fixedly connected to the side wall of the stirring shaft (84); and the spiral blades (86) are fixedly connected to the side wall of the stirring shaft (84).

4. The oilfield chemical wellbore dosing device according to claim 1, characterized in that: The feeding assembly (9) comprises a feeding port (91), a locking frame (92) and a top cover (93); the feeding port (91) is arranged at the top of the dosing tank (1); one end of the locking frame (92) is hinged to the side wall of the feeding port (91) and the other end is bolted to the feeding port (91); the top cover (93) is hinged to the middle part of the locking frame (92) and is compatible with the feeding port (91).

5. The oilfield chemical wellbore dosing device according to claim 2, characterized in that: A gas relief valve (10) is provided on the side wall of the top tank (784).

6. The oilfield chemical wellbore dosing device according to claim 2, characterized in that: A liquid level observation port (11) is provided on the side wall of the top tank (784).

7. The oilfield chemical wellbore dosing device according to claim 1, characterized in that: Two temperature measuring meters (12) are arranged at the bottom of the dosing tank (1), and the two temperature measuring meters (12) are symmetrically arranged.

8. The oilfield chemical wellbore dosing device according to claim 2, characterized in that: A second temperature measuring meter (13) is provided on the side wall of the heat-insulating cover (781).

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