Viscosity-reducing dosing device for oil well

Abstract

The utility model relates to the technical field of oil well dosing, in particular to an oil well viscosity reduction dosing device. The oil well viscosity reduction dosing device comprises a butt joint pipe, wherein connecting flanges are arranged at the two ends of the butt joint pipe; the side through pipe is embedded in one side of the butt joint pipe and communicated with the butt joint pipe, a chemical adding pipe is installed on the side through pipe and communicated with a diaphragm machine, the liquid inlet end of the diaphragm machine is communicated with a chemical barrel, and a regulator used for controlling the power of the diaphragm machine is installed at the top end of the chemical barrel; the stirring mechanism is arranged on the side through pipe and comprises a supporting shaft, the supporting shaft is rotationally installed on the side through pipe, an impeller is installed at the end, stretching into the butt joint pipe, of the supporting shaft, a plurality of stirring rods are installed at the end, stretching into the side through pipe, of the supporting shaft, a rotary encoder is installed on the outer side of the side through pipe, and the rotary encoder is coaxially and fixedly connected with the supporting shaft; and the rotary encoder is electrically connected with the regulator. The viscosity-reducing dosing device for the oil well has the advantages of being accurate in accompanying water conveying and convenient to mix liquid medicine.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well dosing, in particular to an oil well viscosity reducing dosing device. Background Art

[0002] At present, with the continuous development of oil fields, some oil layers with high viscosity and high wax content have become the main production force. The crude oil produced by these oil layers is not only difficult to mine underground, but also difficult to manage on the ground. In order to improve the production capacity of oil wells and the service life of wellbore pipe pumps, increase the maintenance-free period of oil wells, and increase the crude oil production of heavy oil wells, it is usually used to reduce the viscosity of heavy oil wells by adding drugs. There are three ways to reduce the viscosity of heavy oil wells by adding drugs: First, use a small flow dosing machine. Although the dosage is accurately measured, the accompanying water is not easy to measure, which is not suitable for oil wells with high casing pressure; second, use a jet pump to add drugs, and there is a problem that the dosage cannot be controlled; third, the on-site management personnel continuously add a certain dose of drugs to the wellbore at a small flow rate, and use direct manual dosing in the wellbore. The dosing is frequent and the labor intensity of employees is high, which is also not suitable for oil wells with casing pressure.

[0003] The above-mentioned dosing method cannot achieve accurate delivery according to the amount of accompanying water, and lacks mixing and stirring during the delivery process.

[0004] Therefore, it is necessary to provide a new oil well viscosity reducing and dosing device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oil well viscosity reducing and dosing device which can accurately transport water and facilitate the mixing of chemical liquid.

[0006] The oil well viscosity reduction and dosing device provided by the utility model comprises: a butt-joint pipe, both ends of which are provided with connecting flanges;

[0007] A side passage pipe is embedded in one side of the butt joint pipe and communicated with the butt joint pipe, and a dosing pipe is installed on the side passage pipe, the dosing pipe is connected with a diaphragm machine, the liquid inlet end of the diaphragm machine is connected with a medicine barrel, and a regulator for controlling the power of the diaphragm machine is installed on the top of the medicine barrel;

[0008] A stirring mechanism is arranged on the side passage pipe, and the stirring mechanism includes a support shaft, the support shaft is rotatably installed on the side passage pipe, and an impeller is installed on the end of the support shaft extending into the docking pipe, and a plurality of stirring rods are installed on the end of the support shaft extending into the side passage pipe, and a rotary encoder is installed on the outside of the side passage pipe, the rotary encoder is coaxially fixedly connected to the support shaft, and the rotary encoder is electrically connected to the regulator.

[0009] Preferably, a reducing pipe is installed in the butt-joint pipe, the reducing pipe is arranged below the supporting shaft, the bottom end of the side passage pipe is connected with a side flow pipe, and the end of the side flow pipe away from the side passage pipe is connected with the butt-joint pipe.

[0010] Preferably, the end of the side flow pipe facing away from the side passage pipe is arranged below the reducing pipe.

[0011] Preferably, a medicine tonic tube is provided at the top of the medicine barrel, and a detachably connected sealing cover is provided at the top of the medicine tonic tube.

[0012] Preferably, a liquid level meter is provided on one side of the medicine barrel, and a liquid level sensor is provided at the bottom end of the medicine barrel, and the liquid level sensor is electrically connected to the regulator.

[0013] Preferably, a cam is provided on the support shaft just below the dosing tube, and hanging rods are symmetrically installed on both sides of the side through tube. A support plate is commonly installed at one end of the two hanging rods extending into the side through tube, a U-shaped block contacting and cooperating with the cam is installed at the bottom end of the support plate, a conical sealing plug is installed at the top end of the support plate, and a return spring is sleeved on the two hanging rods, one end of the return spring is fixedly connected to the inner wall of the side through tube, and the other end of the return spring is fixedly connected to the support plate.

[0014] Compared with the related art, the oil well viscosity reduction and dosing device provided by the utility model has the following beneficial effects:

[0015] 1. The utility model provides an oil well viscosity reduction and dosing device, which is provided with a side pipe on the butt-joint pipe, a dosing pipe on the side pipe, the dosing pipe is connected with the medicine barrel through a diaphragm machine, and a stirring mechanism is provided in the side pipe. The stirring mechanism uses the cooperation of a support shaft, an impeller, a rotary encoder and a stirring rod. When the butt-joint pipe delivers water, the water impacts the impeller to drive the support shaft, thereby driving the stirring rod to mix and stir the liquid medicine. At the same time, when rotating, the rotary encoder is used to detect the water volume, thereby adjusting the delivery power of the diaphragm machine and realizing the precise delivery of the medicine volume;

[0016] 2. By arranging a reducing pipe on the butt joint pipe and a side flow pipe between the side pipe and the butt joint pipe, the flow rate out of the impeller is changed, so that when the water body impacts the impeller to rotate, part of the water flows into the butt joint pipe through the side flow pipe, thereby facilitating the transportation of the liquid medicine after mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a preferred embodiment of the oil well viscosity reducing and dosing device provided by the utility model;

[0018] Figure 2 A schematic diagram of the structure of a side passage pipe of the oil well viscosity reducing and dosing device provided by the utility model being equipped with a stirring mechanism;

[0019] Figure 3 A schematic diagram of an axial section structure of a side passage pipe of an oil well viscosity reducing and dosing device provided by the utility model equipped with a stirring mechanism;

[0020] Figure 4 for Figure 3 A partial enlarged view of A shown.

[0021] Numbers in the figure: 1. Butt-joined pipe; 11. Reduced diameter pipe; 12. Side flow pipe; 2. Side passage pipe; 3. Dosing pipe; 4. Diaphragm machine; 5. Medicine barrel; 51. Medicine replenishing pipe; 52. Sealing cover; 53. Liquid level gauge; 54. Liquid level sensor; 6. Stirring mechanism; 61. Support shaft; 62. Impeller; 63. Rotary encoder; 64. Stirring rod; 65. Cam; 66. Suspension rod; 67. Support plate; 68. U-shaped block; 69. Conical sealing plug; 661. Return spring; 7. Regulator. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 4 The utility model provides an oil well viscosity reduction and dosing device, and the oil well viscosity reduction and dosing device comprises:

[0025] A butt-joint pipe 1, both ends of which are provided with connecting flanges;

[0026] The side through pipe 2 is embedded in one side of the butt-joint pipe 1 and communicated with the butt-joint pipe 1, and a dosing pipe 3 is installed on the side through pipe 2, the dosing pipe 3 is communicated with a diaphragm machine 4, the liquid inlet end of the diaphragm machine 4 is communicated with a medicine barrel 5, and a regulator 7 for controlling the power of the diaphragm machine 4 is installed on the top of the medicine barrel 5;

[0027] The stirring mechanism 6 is arranged on the side passage pipe 2, and the stirring mechanism 6 includes a support shaft 61, the support shaft 61 is rotatably installed on the side passage pipe 2, and the end of the support shaft 61 extending into the docking pipe 1 is installed with an impeller 62, and the end of the support shaft 61 extending into the side passage pipe 2 is installed with a plurality of stirring rods 64, and a rotary encoder 63 is installed on the outside of the side passage pipe 2, and the rotary encoder 63 is coaxially fixedly connected to the support shaft 61, and the rotary encoder 63 is electrically connected to the regulator 7.

[0028] It should be noted that: when in use, the connecting flanges at both ends of the butt joint 1 are connected to the water injection pipe, and then when water is injected, the diaphragm machine 4 is started synchronously to transport the medicine in the medicine barrel 5 from the dosing pipe 3 to the side pipe 2. The water body impacts the impeller 62, thereby driving the support shaft 61 to rotate. The support shaft 61 drives a number of stirring rods 64 to stir and mix the incoming medicine liquid, which is then transported downward with the water. Further, the rotation amount of the support shaft 61 is detected by the rotary encoder 63 and fed back to the regulator 7. The regulator 7 adjusts the power of the diaphragm machine 4 according to the rotation amount, thereby realizing accurate delivery of the medicine liquid.

[0029] In the embodiments of the present invention, please refer to Figures 1 to 4 A reducing pipe 11 is installed in the butt-joint pipe 1, and the reducing pipe 11 is arranged below the support shaft 61. The bottom end of the side passage pipe 2 is connected with a side flow pipe 12, and the end of the side flow pipe 12 away from the side passage pipe 2 is connected with the butt-joint pipe 1;

[0030] The end of the side flow pipe 12 which is away from the side passage pipe 2 is arranged below the reducing pipe 11 .

[0031] It should be noted that after the butt-jointed pipe 1 is butt-joined, the water flow passes through the impeller 62, and a reducing pipe 11 is arranged below. A part of the water flow is pressed into the side passage pipe 2, and then flows back through the side flow pipe 12, so that the mixed liquid medicine is transported to the butt-jointed pipe 1 and continued to be transported downward.

[0032] In the embodiments of the present invention, please refer to Figures 1 to 4 A medicine tonic tube 51 is provided at the top of the medicine barrel 5, and a detachably connected sealing cover 52 is provided at the top of the medicine tonic tube 51;

[0033] A liquid level meter 53 is provided on one side of the medicine barrel 5 , and a liquid level sensor 54 is provided at the bottom end of the medicine barrel 5 . The liquid level sensor 54 is electrically connected to the regulator 7 .

[0034] It should be noted that: the medicine barrel 5 is provided with a medicine replenishing pipe 51 so that the medicine liquid can be replenished in time when it is insufficient in the later stage, and it is sealed by a sealing cover 52 to prevent impurities from entering, and the amount of medicine in the medicine barrel 5 can be observed by a liquid level meter 53 to facilitate timely addition of medicine. Further, a liquid level sensor 54 is provided to be electrically connected to the regulator 7. When the medicine in the medicine barrel 5 is insufficient, the regulator 7 controls the diaphragm machine 4 to stop to prevent it from idling.

[0035] In the embodiments of the present invention, please refer to Figures 1 to 4A cam 65 is provided on the support shaft 61 just below the dosing tube 3, and hanging rods 66 are symmetrically installed on both sides of the side through tube 2 located on the dosing tube 3. One end of the two hanging rods 66 extending into the side through tube 2 is commonly installed with a supporting plate 67, and a U-shaped block 68 contacting and cooperating with the cam 65 is installed at the bottom end of the supporting plate 67, and a conical sealing plug 69 is installed at the top of the supporting plate 67. A return spring 661 is sleeved on the two hanging rods 66, and one end of the return spring 661 is fixedly connected to the inner wall of the side through tube 2, and the other end of the return spring 661 is fixedly connected to the supporting plate 67;

[0036] It should be noted that: when the support shaft 61 rotates, the cam 65 is driven to rotate synchronously. When the cam 65 rotates, under the limiting connection of the return spring 661, the support plate 67 is driven to move back and forth along the suspension rod 66 through the U-shaped block 68, and the conical sealing plug 69 is driven to move back and forth at the bottom end of the dosing tube 3 during the movement, thereby facilitating the stirring of the medicine liquid up and down, thereby improving the uniformity of the mixing of the medicine liquid.

[0037] It should also be noted that the cam 65 is an ellipse, which is divided into a long axis and a short axis. As the cam 65 rotates, its long and short axes contact the U-shaped block 68 alternately, thereby driving the suspension rod 66 to reciprocate up and down.

[0038] It is worth noting that: here, when the pressure of the dosing liquid in the dosing tube 3 is relatively small, under the action of the reducing tube 11, part of the liquid flowing through the top of the reducing tube 11 flows into the side passage 2, merges with the liquid added in the dosing tube 3, and is stirred by moving the conical sealing plug 69 up and down, and then flows into the dosing tube 1 through the side flow tube 12. When the pressure of the dosing liquid in the dosing tube 3 is relatively large, it is injected into the dosing tube 1 through the side flow tube 12 and the side passage 2. Under the action of the conical sealing plug 69, when the conical sealing plug 69 blocks the bottom of the dosing tube 3, part of the liquid in the dosing tube 1 first flows into the side passage 2, and continues to rotate until the bottom of the dosing tube 3 is opened. The agent merges with the liquid flowing into the side passage 2, and then flows into the dosing tube 1 in the reverse direction after being stirred by the stirring rod 64. Part of the agent flows into the dosing tube 1 from the side flow tube 12 to complete the dosing, so that no matter how large the dosing hydraulic pressure of the dosing tube 3 is, the liquid can be mixed evenly.

[0039] The working principle of the oil well viscosity reduction and dosing device provided by the utility model is as follows:

[0040] When in use, the connecting pipe 1 is connected to the water injection pipe using the connecting flanges at both ends, and then when water is injected, the diaphragm machine 4 is started synchronously to transport the medicine in the medicine barrel 5 from the dosing pipe 3 to the side pipe 2, and the water impacts the impeller 62, thereby driving the support shaft 61 to rotate, and the support shaft 61 drives a plurality of stirring rods 64 to stir and mix the incoming medicine liquid, and the mixed medicine liquid is transported downward with the water. Further, the rotation amount of the support shaft 61 is detected by the rotary encoder 63, and the rotation amount is fed back to the regulator 7. The regulator 7 regulates the power of the diaphragm machine 4 according to the rotation amount, thereby realizing the precise delivery of the medicine liquid. Further, when the support shaft 61 rotates, the cam 65 is synchronously driven to rotate. When the cam 65 rotates, under the connection of the reset spring 661, the support plate 67 is driven to move back and forth up and down along the suspension rod 66 through the U-shaped block 68, and the conical sealing plug 69 is driven to move back and forth at the bottom end of the dosing pipe 3 during the movement, thereby facilitating the stirring of the medicine liquid up and down, thereby improving the uniformity of the mixing of the medicine liquid.

[0041] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An oil well viscosity reduction and dosing device, comprising: A butt-jointed pipe (1), wherein both ends of the butt-jointed pipe (1) are provided with connecting flanges; It is characterized by further comprising: A side passage (2) is embedded in one side of the butt joint pipe (1) and is in communication with the butt joint pipe (1); a drug adding pipe (3) is installed on the side passage pipe (2); the drug adding pipe (3) is in communication with a diaphragm machine (4); the liquid inlet end of the diaphragm machine (4) is in communication with a drug barrel (5); a regulator (7) for controlling the power of the diaphragm machine (4) is installed on the top end of the drug barrel (5); A stirring mechanism (6) is arranged on the side passage pipe (2), and the stirring mechanism (6) comprises a support shaft (61), the support shaft (61) is rotatably mounted on the side passage pipe (2), and an impeller (62) is mounted on one end of the support shaft (61) extending into the butt joint pipe (1), and a plurality of stirring rods (64) are mounted on one end of the support shaft (61) extending into the side passage pipe (2), and a rotary encoder (63) is mounted on the outside of the side passage pipe (2), the rotary encoder (63) is coaxially fixedly connected to the support shaft (61), and the rotary encoder (63) is electrically connected to the regulator (7).

2. The oil well viscosity reducing and adding drug device according to claim 1, characterized in that: A reducing pipe (11) is installed in the butt-joint pipe (1), and the reducing pipe (11) is arranged below the support shaft (61). The bottom end of the side passage pipe (2) is connected to a side flow pipe (12), and one end of the side flow pipe (12) facing away from the side passage pipe (2) is connected to the butt-joint pipe (1).

3. The oil well viscosity reducing and adding drug device according to claim 2, characterized in that: One end of the side flow pipe (12) facing away from the side passage pipe (2) is arranged below the reduced diameter pipe (11).

4. The oil well viscosity reducing and adding drug device according to claim 1, characterized in that: A medicine tonic tube (51) is provided at the top end of the medicine barrel (5), and a detachably connected sealing cover (52) is provided at the top end of the medicine tonic tube (51).

5. The oil well viscosity reducing and adding drug device according to claim 1, characterized in that: A liquid level meter (53) is provided on one side of the medicine barrel (5), and a liquid level sensor (54) is provided at the bottom end of the medicine barrel (5); the liquid level sensor (54) is electrically connected to the regulator (7).

6. The oil well viscosity reducing and adding drug device according to claim 1, characterized in that: A cam (65) is provided on the support shaft (61) directly below the dosing tube (3); suspension rods (66) are symmetrically installed on both sides of the side passage tube (2) located on the dosing tube (3); a support plate (67) is installed at one end of the two suspension rods (66) extending into the side passage tube (2); a U-shaped block (68) contacting and cooperating with the cam (65) is installed at the bottom end of the support plate (67); a conical sealing plug (69) is installed at the top end of the support plate (67); a return spring (661) is sleeved on the two suspension rods (66); one end of the return spring (661) is fixedly connected to the inner wall of the side passage tube (2); and the other end of the return spring (661) is fixedly connected to the support plate (67).

Images