Anti-jamming emptying structure for foam drainage gas recovery

Abstract

The utility model discloses an anti-jamming discharging structure for foam discharging gas production, belongs to the technical field of foam discharging ball throwing, and aims to solve the technical problem that in the prior art, foam discharging balls are prone to jamming due to the fact that the throwing number of the foam discharging balls is large. The rotary throttling device comprises a rotary throttling assembly, a funnel disc arranged below the rotary throttling assembly, a discharging pipeline connected with a discharging port of the funnel disc and a pressure container bottom sealing head used for fixing the funnel disc. A stirring wedge is arranged on the lower end face of the rotary throttling assembly and comprises a connecting rod and a tooth-shaped piece, and the tooth-shaped piece is used for stirring foam discharging balls clamped at the discharging port of the funnel disc or the upper portion of the discharging pipeline. The anti-jamming emptying structure for foam drainage gas production can be better used for drainage gas production work of natural gas production, and is wide in application range, large in chemical dosage, short in operation time and controllable in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of foam volleyball delivery, in particular to an anti-blocking material delivery structure used for foam volleyball gas collection. Background Art

[0002] In natural gas production, as the reservoir pressure and natural gas flow rate gradually decrease, the produced water in the reservoir is retained in the wellbore. These liquids gather at the bottom of the well for a period of time to form a liquid column, which causes additional hydrostatic back pressure on the gas reservoir, resulting in a continuous decrease in the self-flowing capacity of the gas well. Currently, the commonly used drainage gas production processes include gas lift drainage gas production and foam drainage gas production. Among them, foam drainage gas production has the characteristics of high degree of automation and low investment cost compared with gas lift drainage gas production process.

[0003] The existing foam drainage and gas production process mostly uses the method of injecting foaming agent into the wellbore, or dropping foam balls through the oil pipe to foam the bottom of the well so that the accumulated liquid can be discharged with a lower natural gas flow rate. However, during the ball dropping process, due to the huge number of balls dropped, in order to ensure the smooth progress of the foam drainage, it is necessary to control the ball dropping speed and avoid the foam balls from getting stuck. Therefore, an anti-blocking discharge structure for foam drainage and gas production is urgently needed. Utility Model Content

[0004] The utility model aims to provide a material discharge structure for preventing jamming of foam volleyball balls for gas collection, so as to solve the technical problem in the prior art that foam volleyball balls are easily jammed due to the huge number of foam volleyball balls released.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an anti-jamming discharge structure for bubble volleyball gas collection, which is built into a pressure vessel and used for releasing bubble volleyballs, and includes a rotary throttling component, a funnel plate arranged below the rotary throttling component, a discharge pipe connected to the discharge port of the funnel plate, and a bottom cover of the pressure vessel for fixing the funnel plate;

[0007] The lower end surface of the rotary throttling assembly is provided with a stirring wedge, and the stirring wedge includes a connecting rod and a tooth-shaped piece, and the tooth-shaped piece is used to stir the bubble volleyball stuck at the discharge port of the funnel plate or the upper part of the discharge pipe.

[0008] By setting up a rotary throttling component, the bubble volleyballs gathered above the rotary throttling component can be discharged from the rotary throttling component at a constant speed and in a constant quantity; by setting up a stirring wedge on the lower end surface of the rotary throttling component, the bubble volleyballs can be prevented from getting stuck at the discharge port of the funnel plate or the upper part of the discharge pipe.

[0009] Optionally or preferably, the rotary throttling assembly includes a diverter turntable and a dividing turntable which are arranged in a vertically fitted manner, the diverter turntable is fixedly connected to the inner wall of the pressure vessel via a limiting ring, and the dividing turntable is connected to a transmission shaft, and the transmission shaft is used to enable relative rotation between the dividing turntable and the diverter turntable.

[0010] Optionally or preferably, the diversion turntable has a plurality of gaps one in a circular array, and the dividing turntable is provided with a single gap two, wherein the gap one is used for diverting a single or multiple bubble volleyballs, and the gap two is used for passing a single or multiple bubble volleyballs.

[0011] By providing a diverter turntable and a dividing turntable, the bubble volleyball can be effectively discharged at a constant speed and in a constant quantity. Specifically, a single or multiple bubble volleyballs first fall into gap one on the separation turntable. Since the dividing turntable is connected to a transmission shaft, when gap two on the dividing turntable overlaps with gap one on the diverter turntable, the bubble volleyball falls from gap two. The speed of the transmission shaft is controlled by a driving motor, thereby realizing the control of the speed of the dividing turntable, and then adjusting the overlap period of gap one and gap two, that is, the pitching speed.

[0012] Optionally or preferably, the connecting rod is fixedly connected to the lower end surface of the indexing turntable;

[0013] The tooth-shaped piece has a notch for the volleyball ball to pass through, and the upper part of the tooth-shaped piece is inclined.

[0014] Optionally or preferably, the number of gap one is four, and the number of gap two is one.

[0015] Based on the above technical solution, the utility model can at least produce the following technical effects:

[0016] (1) The utility model provides an anti-jamming discharge structure for bubble gas extraction. By setting a rotary throttling component, the bubble balls gathered above the rotary throttling component can be discharged at a constant speed and quantity by the rotary throttling component. After being matched with a pressure vessel, the charge amount is large, the ball throwing efficiency is high, and the number of balls thrown can be orderly and controllable;

[0017] (2) By setting a stirring wedge, the stirring wedge can rotate with the rotating throttling component and stir the discharge port of the funnel plate or the upper part of the discharge pipe to avoid the accumulation and blockage of multiple bubble volleyballs falling at the same time, which affects the subsequent bubble volleyball throwing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the anti-jamming discharge structure for bubble drainage and gas collection of the utility model;

[0019] Figure 2It is a structural schematic diagram of a rotary throttling component in an anti-jamming discharge structure for bubble drainage gas production according to the utility model;

[0020] Figure 3 It is a structural schematic diagram of a flow dividing turntable in an anti-jamming discharge structure for bubble drainage gas collection of the utility model;

[0021] Figure 4 The utility model is a structural schematic diagram of a dividing turntable and a stirring wedge in an anti-jamming discharge structure for foaming and gas collection.

[0022] In the figure: 1. rotary throttling assembly; 2. funnel plate; 3. discharge pipe; 4. bottom head; 5. diverter turntable; 51. notch one; 6. dividing turntable; 62. notch two; 7. transmission shaft; 8. stirring wedge; 81. connecting rod; 82. tooth-shaped part; 9. volleyball; 10. limit ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work belong to the scope of protection of the utility model.

[0024] Example

[0025] See also Figures 1 to 4 A material discharge structure for preventing jamming during bubble gas production is provided, which is built into a pressure vessel, so that the bubble ball 9 can be orderly and controllably passed into the oil pipe of the gas production tree below under the action of pressure and the jamming phenomenon of the bubble ball 9 can be avoided.

[0026] For ease of understanding and description, descriptions of some connectors and structural parts are omitted in this embodiment, and the undescribed parts are conventional technical means that can be understood by those skilled in the art.

[0027] See also Figure 1 The anti-jamming discharge structure for bubble gas production includes a rotary throttling component 1, a funnel plate 2 arranged below the rotary throttling component 1, a discharge pipe 3 connected to the discharge port of the funnel plate 2, and a pressure vessel bottom head 4 for fixing the funnel plate 2; a large number of bubble balls 9 accumulate above the rotary throttling component 1, enter the discharge pipe 3 from the discharge port of the funnel plate 2 after passing through the rotary throttling component 1, and finally enter the oil pipe of the gas production tree.

[0028] See also Figure 2Due to the huge number of bubble volleyballs 9, in order to control the speed and number of bubble volleyballs 9, a rotary throttling component 1 is arranged in the pressure vessel in this embodiment. The rotary throttling component 1 includes a diverter turntable 5 and a dividing turntable 6 which are arranged in a close relationship with each other, wherein the upper part is the diverter turntable 5 and the lower part is the dividing turntable 6; wherein the diverter turntable 5 is relatively fixed to the inner wall of the pressure vessel. In this embodiment, a limiting ring 10 is arranged on the outer edge of the diverter turntable 5, and the diverter turntable 5 and the limiting ring 10 are connected by multiple bolts. The limiting ring 10 is fixedly connected to the inner wall of the pressure vessel. The diverter turntable 5 is kept relatively fixed to the pressure vessel through the above-mentioned limiting ring 10, so that the diverter turntable 5 does not rotate during operation. A transmission shaft 7 is connected to the center of the dividing turntable 6. It can be understood that a driving motor is connected to the end of the transmission shaft 7 away from the dividing turntable 6, and the transmission shaft 7 is driven by the driving motor to cause relative rotation between the dividing turntable 6 and the diverter turntable 5.

[0029] See also Figure 3 and Figure 4 In this embodiment, four arc-shaped notches 51 are arranged in a circular array on the diversion turntable 5, and the bubble volleyball 9 in the pressure vessel can fall into the notch 51. The number of bubble volleyballs 9 falling into the notch 51 can be determined by changing the size of the notch 51; a single notch 61 is arranged on the dividing turntable 6. Since the dividing turntable 6 will rotate under the action of the transmission shaft 7, when the notch 61 coincides with any one of the notches 51, the single or multiple bubble volleyballs 9 in the notch 51 will be discharged into the funnel plate 2 through the notch 61; personnel can also control the rotation speed of the transmission shaft 7 to control the overlap period of the notch 51 and the notch 62, thereby controlling the pitching speed of the bubble volleyball 9.

[0030] See also Figure 1 and Figure 4 When multiple bubble volleyballs 9 enter the discharge pipe 3 from the funnel plate 2 at the same time, they are easily blocked at the discharge port of the funnel plate 2 or the upper part of the discharge pipe 3, affecting the subsequent ball throwing work. In order to avoid blockage at the discharge port of the funnel plate 2 or the upper part of the discharge pipe 3, in this embodiment, a stirring wedge 8 is provided on the lower end surface of the rotary throttling assembly 1.

[0031] Specifically, the stirring wedge 8 includes a connecting rod 81 and a tooth-shaped piece 82. The upper end of the connecting rod 81 is fixedly connected to the lower end surface of the dividing turntable 6, and the other end is fixedly connected to the tooth-shaped piece 82. The tooth-shaped piece 82 can be adjusted to achieve the stirring position by setting the length of the connecting rod 81. In this embodiment, the tooth-shaped piece 82 has a circular notch for a single or multiple bubble volleyballs 9 to pass through, and the upper part of the tooth-shaped piece 82 is inclined, so that the tooth-shaped piece 82 can separate the bubble volleyballs 9 stuck in the discharge port of the funnel plate 2 or the upper part of the discharge pipe 3 during the rotation of the dividing turntable 6, thereby avoiding jamming.

[0032] In actual work, the pressure vessel provided by the utility model and matching the above-mentioned anti-jamming discharge structure is loaded with 5,000 high-density foam volleyballs. With the cooperation of the anti-jamming discharge structure, the balls can be thrown in within ten minutes, with a large dosage, short operation time and controllable cost.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-jamming discharge structure for gas extraction by foaming, characterized in that: Built into a pressure vessel, used for placing a foam volleyball (9), comprising a rotary throttling component (1), a funnel plate (2) arranged below the rotary throttling component (1), a discharge pipe (3) connected to the discharge port of the funnel plate (2), and a bottom cover (4) of the pressure vessel for fixing the funnel plate (2); The lower end surface of the rotary throttling assembly (1) is provided with a stirring wedge (8), and the stirring wedge (8) comprises a connecting rod (81) and a tooth-shaped member (82), and the tooth-shaped member (82) is used to stir the bubble volleyball (9) stuck at the discharge port of the funnel plate (2) or the upper part of the discharge pipe (3).

2. The anti-jamming discharge structure for gas extraction by foaming according to claim 1 is characterized in that: The rotary throttling assembly (1) comprises a flow dividing turntable (5) and a dividing turntable (6) which are arranged in a vertically fitted manner. The flow dividing turntable (5) is fixedly connected to the inner wall of the pressure vessel via a limiting ring (10). The dividing turntable (6) is connected to a transmission shaft (7). The transmission shaft (7) is used to enable the dividing turntable (6) and the flow dividing turntable (5) to rotate relative to each other.

3. The anti-jamming discharge structure for gas extraction by foaming according to claim 2 is characterized in that: The diversion turntable (5) has a plurality of notches one (51) in a circular array, and the dividing turntable (6) is provided with a single notch two (61). The notch one (51) is used to divert a single or multiple bubble volleyballs (9), and the notch two (61) is used to pass a single or multiple bubble volleyballs (9).

4. The anti-jamming discharge structure for bubble extraction and gas collection according to claim 2 is characterized in that: The connecting rod (81) is fixedly connected to the lower end surface of the indexing turntable (6); The tooth-shaped piece (82) has a notch for the volleyball ball (9) to pass through, and the upper part of the tooth-shaped piece (82) is arranged at an angle.

5. The anti-jamming discharge structure for gas extraction by foaming according to claim 3 is characterized in that: The number of the gap one (51) is four, and the number of the gap two (61) is one.

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