Defoaming device for gas well foam scrubbing accumulated liquid

Abstract

The utility model discloses a defoaming device for gas well foam drainage accumulated liquid, and relates to the technical field of gas well gas recovery, the defoaming device comprises a defoaming cylinder, a first defoaming mechanism, a bearing seat, a second defoaming mechanism, a servo motor and a liquid inlet hose, the outer wall of the defoaming cylinder is respectively provided with a foam inlet pipe and a liquid drainage pipe, the first defoaming mechanism is arranged in the inner cavity of the defoaming cylinder, and the second defoaming mechanism is arranged in the inner cavity of the defoaming cylinder. The bearing seat is fixed at the bottom of the defoaming cylinder, the second defoaming mechanism is mounted at the top of the defoaming cylinder, and the servo motor is mounted at the top of the first defoaming mechanism. Through the arrangement mode that the first defoaming mechanism and the second defoaming mechanism are matched with each other, foam can be naturally ablated by a solid defoaming agent of the first defoaming mechanism, the foam can be extruded towards the first defoaming mechanism by the second defoaming mechanism, the foam can be conveniently crushed, and the foam can be conveniently defoamed by being matched with spraying of a liquid defoaming agent; and the defoaming agent is suitable for defoaming a gas well with relatively large daily water yield.

Description

Technical Field

[0001] This utility model relates to the field of gas well gas production technology, and in particular to a defoaming device for removing accumulated liquid in gas wells. Background Technology

[0002] During foam drainage gas production, the foaming agent mixes with the liquid in the wellbore and forms a large amount of low-density water-containing foam under the agitation of the airflow. This foam helps to carry the liquid from the bottom of the well to the surface. However, if this foam is not defoamed after it rises to the surface with the natural gas, it will cause harm to gas-liquid separation, gas purification, transportation, and storage. It will also be detrimental to the collection and treatment of liquids, and may cause problems such as difficulty in discharge and environmental pollution.

[0003] Existing methods for defoaming gas wells with high daily water production involve continuously pumping defoamer into the defoaming device inside the gas pipeline using a high-pressure pump, or defoaming the foam from the drained liquid by contacting it with a solid defoamer. However, during defoaming, the defoaming efficiency depends entirely on the contact surface between the foam and the defoamer. The foam solubility is not high, resulting in low defoaming efficiency in the gas pump, which affects the defoaming efficiency of gas wells with high daily water production. Utility Model Content

[0004] The purpose of this invention is to provide a defoaming device for draining accumulated liquid in gas wells, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a defoaming device for draining accumulated liquid in gas wells, comprising:

[0006] A defoaming cylinder, wherein an inlet pipe and a drain pipe are respectively inserted and installed in the middle and bottom of the outer wall of the defoaming cylinder;

[0007] Also includes:

[0008] The first defoaming mechanism is installed inside the defoaming cylinder;

[0009] A support base, which is fixed to the bottom of the defoaming cylinder;

[0010] The second defoaming mechanism is installed on the top of the defoaming cylinder and is used for spraying liquid defoamer and compressing foam.

[0011] A servo motor is mounted on top of the second defoaming mechanism;

[0012] The liquid inlet hose passes through the defoaming cylinder and is connected to the feed pipe outside the defoaming cylinder.

[0013] Preferably, the first defoaming mechanism includes:

[0014] A support frame, which is fixed to the inner wall of the defoaming cylinder;

[0015] A liquid outlet is provided at the bottom of the support frame;

[0016] A solid defoamer, wherein the solid defoamer is filled in the inner cavity of the support frame;

[0017] A protective net is fixed to the corners of the support frame with screws.

[0018] Preferably, the second defoaming mechanism includes:

[0019] A lead screw, the bottom of which is rotatably connected to the middle of the bearing seat via a bearing;

[0020] Nut seat, the nut seat being threaded through the outer wall of the lead screw;

[0021] A pressure plate, which is fixed to the bottom of a nut seat;

[0022] An arc-shaped plate is fixed to one side of the pressure plate and is used to seal the end of the bubble inlet tube.

[0023] A liquid spraying assembly, which is connected to an inlet hose.

[0024] Preferably, the lead screw is rotatably connected to the middle of the bearing frame, the top of the lead screw is rotatably connected to the top of the defoaming cylinder via a bearing, and the lead screw is movably connected to the middle of the pressure plate.

[0025] Preferably, the spraying assembly includes:

[0026] A circular tube, which is connected to an inlet hose;

[0027] The nozzle is fixed between the disc tube and the pressure plate.

[0028] Preferably, the disc tube is fixed to the top of the pressure plate by a snap fastener, the nozzle is disposed opposite to the first defoaming mechanism, and the foam inlet tube is disposed between the first defoaming mechanism and the second defoaming mechanism.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] This utility model, through the combination of a first defoaming mechanism and a second defoaming mechanism, facilitates the natural dissolution of foam by the solid defoamer of the first defoaming mechanism, while the second defoaming mechanism can squeeze the foam towards the first defoaming mechanism, facilitating the crushing of the foam and accelerating the defoaming efficiency. Combined with the spraying of liquid defoamer, it facilitates the rapid defoaming of large amounts of foam and is suitable for defoaming applications in gas wells with large daily water production. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0032] Figure 2 This is a schematic diagram of the overall front structure of this utility model.

[0033] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0034] In the diagram: 1. Defoaming cylinder; 2. Foam inlet pipe; 3. Drain pipe; 4. First defoaming mechanism; 41. Support frame; 42. Liquid outlet; 43. Solid defoamer; 44. Protective net; 5. Support seat; 6. Second defoaming mechanism; 61. Lead screw; 62. Nut seat; 63. Pressure plate; 64. Arc plate; 65. Spraying assembly; 651. Coil tube; 652. Nozzle; 7. Servo motor; 8. Liquid inlet hose. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] This utility model provides, for example Figure 1-3 The defoaming device shown is for removing accumulated liquid in gas wells, comprising:

[0037] The defoaming cylinder 1, first defoaming mechanism 4, support seat 5, second defoaming mechanism 6, servo motor 7, and liquid inlet hose 8 are included. A foam inlet pipe 2 and a liquid outlet pipe 3 are respectively installed in the middle and bottom of the outer wall of the defoaming cylinder 1. The foam inlet pipe 2 is connected to the delivery pipe extending into the gas well, facilitating the delivery of foam accumulation at the bottom of the well into the inner cavity of the defoaming cylinder 1. The first defoaming mechanism 4 is installed in the inner cavity of the defoaming cylinder 1. The support seat 5 is fixed to the bottom of the defoaming cylinder 1 and installed on the inner wall of the defoaming cylinder 1. The second defoaming mechanism 6 is installed at the top of the defoaming cylinder 1 and is used for spraying liquid defoamer and compressing foam. The servo motor 7 is installed at the top of the second defoaming mechanism 6. The liquid inlet hose 8 passes through the defoaming cylinder 1 and is connected to the external feed pipe of the defoaming cylinder 1. The feed pipe delivers liquid defoamer through a high-pressure pump, ensuring that the liquid defoamer is delivered to the inner cavity of the liquid inlet hose 8.

[0038] The first defoaming mechanism 4 includes a support frame 41, a liquid outlet 42, a solid defoamer 43, and a protective net 44. The support frame 41 is fixed to the inner wall of the defoaming cylinder 1. The support frame 41 is a cylindrical frame structure that matches the inner wall of the defoaming cylinder 1. The liquid outlet 42 is opened at the bottom of the support frame 41. Multiple liquid outlets 42 are equidistantly opened at the bottom of the support frame 41 for the stable discharge of liquid in the inner cavity of the support frame 41. The drain pipe 3 is installed at the bottom of the support frame 41 to facilitate the discharge of liquid after defoaming. The solid defoamer 43 fills the inner cavity of the support frame 41. The protective net 44 is fixed to the corner of the support frame 41 with screws. The protective net 44 prevents the foam from contacting the solid defoamer 43 for defoaming and prevents the solid defoamer 43 from sticking to the pressure plate 63 due to the downward pressure of the pressure plate 63 on the second defoaming mechanism 6. This helps to improve the stability of the solid defoamer 43 in the inner cavity of the support frame 41.

[0039] Furthermore, the second defoaming mechanism 6 includes: a lead screw 61, a nut seat 62, a pressure plate 63, an arc-shaped plate 64, and a spraying assembly 65. The top of the lead screw 61 has an external thread structure, and the bottom of the lead screw 61 has a smooth cylindrical structure. The bottom of the lead screw 61 is rotatably connected to the middle of the bearing seat 5 through a bearing, and the lead screw 61 is rotatably connected to the middle of the bearing frame 41. The top of the lead screw 61 is rotatably connected to the top of the defoaming cylinder 1 through a bearing. The bottom of the lead screw 61 is driven by the output end of the servo motor 7. The servo motor 7 is electrically connected to an external power supply through an external switch. Driven by the servo motor 7, the lead screw 61 can rotate stably within the inner cavity of the defoaming cylinder 1. The nut seat 62 is threaded into the outer wall of the lead screw 61. Two smooth rods are fixedly connected to the top of the defoaming cylinder 1. The smooth rods are slidably inserted into the top of the nut seat 62 and extend to the top of the support frame 41. The smooth rods are also inserted into the middle of the pressure plate 63. The pressure plate 63 is fixed to the bottom of the nut seat 62. The lead screw 61 is movably connected to the middle of the pressure plate 63. The position of the nut seat 62 is limited by the smooth rods and driven in the forward and reverse directions by the servo motor 7. When the lead screw 61 rotates, the nut seat 62 drives the pressure plate 63 to slide up and down in the inner cavity of the defoaming cylinder 1. The arc plate 64 is fixed to one side of the pressure plate 63. The arc structure of the arc plate 64 matches the inner wall structure of the defoaming cylinder 1. The arc plate 64 is slidably connected to the inner wall of the defoaming cylinder 1. The arc plate 64 is used to seal the end of the bubble inlet tube 2.

[0040] Specifically, the spray assembly 65 is connected to the inlet hose 8. The spray assembly 65 includes a coil tube 651 and a nozzle 652. The coil tube 651 is connected to the inlet hose 8. The nozzle 652 is fixed between the coil tube 651 and the pressure plate 63. The coil tube 651 is fixed to the top of the pressure plate 63 by a snap fastener. Multiple nozzles 652 are fixed in a ring array at the bottom of the pressure plate 63. The nozzles 652 are arranged opposite to the first defoaming mechanism 4. The foam inlet pipe 2 is arranged between the first defoaming mechanism 4 and the second defoaming mechanism 6. When a large amount of foam enters between the pressure plate 63 and the support frame 41 from the foam inlet pipe 2, the high-pressure pump on the feed pipe is activated, so that the liquid defoamer can spray and defoam the foam accumulated on the support frame 41. At the same time, the pressure plate 63 can press down on the foam, which facilitates the improvement of foam breaking efficiency and improves the defoaming efficiency of the device.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A defoaming device for removing accumulated liquid in gas wells, comprising: Defoaming cylinder (1), wherein a foam inlet pipe (2) and a drain pipe (3) are respectively inserted and installed in the middle and bottom of the outer wall of the defoaming cylinder (1); Its characteristic is that it further includes: The first defoaming mechanism (4) is installed in the inner cavity of the defoaming cylinder (1); The support base (5) is fixed to the bottom of the defoaming cylinder (1); The second defoaming mechanism (6) is installed on the top of the defoaming cylinder (1) and is used for spraying liquid defoamer and compressing foam. A servo motor (7) is mounted on top of the second defoaming mechanism (6); The liquid inlet hose (8) passes through the defoaming cylinder (1) and is connected to the feed pipe outside the defoaming cylinder (1).

2. The defoaming device for removing accumulated liquid in gas wells according to claim 1, characterized in that, The first defoaming mechanism (4) includes: The support frame (41) is fixed to the inner wall of the defoaming cylinder (1); Liquid outlet (42) is provided at the bottom of the support frame (41); Solid defoamer (43) is filled in the cavity of the support frame (41); A protective net (44) is fixed to the corner of the support frame (41) by screws.

3. The defoaming device for draining accumulated liquid in a gas well according to claim 2, characterized in that, The second defoaming mechanism (6) includes: The bottom of the lead screw (61) is rotatably connected to the middle of the bearing seat (5) via a bearing; Nut seat (62), the nut seat (62) is threaded through the outer wall of the lead screw (61); Pressure plate (63), the pressure plate (63) is fixed to the bottom of nut seat (62); Arc plate (64), the arc plate (64) is fixed to one side of the pressure plate (63), the arc plate (64) is used to seal the end of the bubble inlet tube (2); The liquid spraying assembly (65) is connected to the liquid inlet hose (8).

4. The defoaming device for removing accumulated liquid in gas wells according to claim 3, characterized in that, The lead screw (61) is rotatably connected to the middle of the bearing frame (41), the top of the lead screw (61) is rotatably connected to the top of the defoaming cylinder (1) through a bearing, and the lead screw (61) is movably connected to the middle of the pressure plate (63).

5. The defoaming device for removing accumulated liquid in a gas well according to claim 3, characterized in that, The liquid spraying assembly (65) includes: A circular tube (651) is connected to an inlet hose (8); The nozzle (652) is fixed between the disc tube (651) and the pressure plate (63).

6. The defoaming device for removing accumulated liquid in gas wells according to claim 5, characterized in that, The disc tube (651) is fixed to the top of the pressure plate (63) by a snap fastener. The nozzle (652) is arranged opposite to the first defoaming mechanism (4). The foam inlet tube (2) is arranged between the first defoaming mechanism (4) and the second defoaming mechanism (6).

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