Pneumatic continuous liquid filling device for oil testing operation site

Abstract

The utility model discloses an oil testing operation site pneumatic continuous liquid filling device which comprises a box body, a pneumatic diaphragm pump is installed inside the box body, an air inlet pipe and an air outlet pipe are fixed on one side of the box body and connected with the pneumatic diaphragm pump, a liquid inlet pipe and a liquid outlet pipe are installed on one side of the box body, a flow meter is installed on the liquid outlet pipe, and the flow meter is connected with the pneumatic diaphragm pump. A fixing assembly is fixed to one side of the box body through a connecting block and comprises a first L-shaped fixing plate, a telescopic hole is formed in the upper end of one side of the first L-shaped fixing plate, the telescopic hole is in sliding fit with a second L-shaped fixing plate, limiting grooves are formed in the two sides of the telescopic hole, and sliding blocks matched with the limiting grooves are fixed to the two sides of the second L-shaped fixing plate. And connecting plates are fixed on the top surfaces of the first L-shaped fixing plate and the second L-shaped fixing plate. By arranging the pneumatic diaphragm pump and the flow meter, filled liquid is accurately metered, the liquid filling amount can be accurately controlled, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield construction, in particular to a pneumatic continuous liquid filling device at an oil testing operation site. Background Art

[0002] At present, the formations of non-flowing wells in oil fields that use oil testing operations will also have a certain pressure. In order to ensure that no blowout occurs during the oil testing operation, it is necessary to maintain a certain height of the liquid level in the wellbore to balance the formation pressure. The oil testing operation requires all the oil pipes in the oil well to be lifted out. Since the oil pipes occupy a certain volume in the wellbore, lifting the oil pipes will inevitably cause the liquid level in the wellbore to drop. Therefore, during the process of lifting the oil pipes in the oil testing operation, a certain volume of liquid needs to be poured into the wellbore for each certain number of oil pipes lifted to keep the liquid level in the wellbore at a certain height, thereby preventing blowouts.

[0003] For example, the Chinese patent publication number CN204663472 discloses a liquid filling device for well repair operations, which consists of a handrail, an upper part of a tank body, a lower part of a tank body, a tank body outlet, an upper coupling, a guide pipe, a lower coupling, and a special joint. The special features of the device are: the handrail is welded to the upper part of the tank body, the upper part of the tank body is welded to the lower part of the tank body, one end of the tank body outlet is welded to the lower part of the tank body, and the other end is threadedly connected to the upper coupling, one end of the guide pipe is threadedly connected to the upper coupling, and the other end is threadedly connected to the lower coupling, and the special joint is threadedly connected to the lower coupling.

[0004] This device uses the height difference of the liquid column to allow the liquid to flow smoothly into the well along the well-killing pipeline by the liquid's own weight, solving the problem of requiring a cement truck to pump liquid into the work site. However, it cannot accurately measure the well-killing fluid and cannot accurately control the amount of liquid injected. If the amount of liquid injected is too small, the pressure of the injected liquid will be lower than the pressure of the oil and gas in the well, which will cause a blowout and a safety accident. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a pneumatic continuous liquid filling device at the oil testing operation site.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pneumatic continuous liquid filling device for oil testing operation site includes a box body, a pneumatic diaphragm pump is installed inside the box body, an air inlet pipe and an air outlet pipe are fixed on one side of the box body and connected to the pneumatic diaphragm pump, a liquid inlet pipe and a liquid outlet pipe are installed on one side of the box body, a flow meter is installed on the liquid outlet pipe, and a fixing component is fixed on one side of the box body through a connecting block.

[0008] As a further solution of the utility model: the fixing assembly includes an L-shaped fixing plate 1, a telescopic hole is opened at the upper end of one side of the L-shaped fixing plate 1, and the telescopic hole is slidably matched with the L-shaped fixing plate 2.

[0009] As a further solution of the utility model: limiting grooves are provided on both sides of the telescopic hole, and sliding blocks matching with the limiting grooves are fixed on both sides of the L-shaped fixing plate.

[0010] As a further solution of the utility model: connecting plates are fixed to the top surfaces of the L-shaped fixing plate 1 and the L-shaped fixing plate 2, and the connecting plates cooperate with each other.

[0011] As a further solution of the utility model: bolts are passed through the connecting plate.

[0012] As a further solution of the utility model: a rubber pad is fixed to the outer wall of the box body, and fixing clips are fixed to the upper ends of both sides of the box body.

[0013] As a further solution of the utility model: the fixing clamp includes a connecting frame, and a rotating shaft is fixed inside the connecting frame.

[0014] As a further solution of the utility model: a clamping plate is passed through the rotating shaft, the clamping plate is matched with the surface of the box body, and a torsion spring is fixed on the rotating shaft to match the clamping plate.

[0015] Compared with the prior art, the utility model provides a pneumatic continuous liquid filling device for oil testing operation site, which has the following beneficial effects:

[0016] 1. The utility model is provided with a pneumatic diaphragm pump and a flow meter to accurately measure the injected liquid, thereby accurately controlling the injection amount and reducing safety hazards.

[0017] 2. The utility model improves the stability of the device by providing a fixing component, making it easier to load and unload the device.

[0018] 3. The utility model is provided with a fixing clip, which facilitates the replacement of the rubber pad, ensures the buffering effect of the rubber pad, and improves the practicability of the device.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a pneumatic continuous liquid filling device at an oil testing operation site proposed by the utility model;

[0021] Figure 2 This is a structural schematic diagram of a pneumatic continuous liquid filling device at an oil testing operation site proposed by the utility model;

[0022] Figure 3This is a structural schematic diagram of a pneumatic continuous liquid filling device at an oil testing operation site proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of a box of a pneumatic continuous liquid filling device at an oil testing operation site proposed by the utility model;

[0024] Figure 5 The utility model is a structural schematic diagram of a fixing clamp of a pneumatic continuous liquid filling device at an oil testing operation site.

[0025] In the figure: 1-box, 2-pneumatic diaphragm pump, 3-inlet pipe, 4-liquid outlet pipe, 5-liquid inlet pipe, 6-flow meter, 7-L-type fixing plate 1, 8-L-type fixing plate 2, 9-connecting plate, 10-bolt, 11-telescopic hole, 12-limiting groove, 13-sliding block, 14-fixing clamp, 15-connecting frame, 16-rotating shaft, 17-torsion spring, 18-clamp, 19-connecting block, 20-rubber pad, 21-outlet pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Example 1

[0029] A pneumatic continuous liquid filling device at an oil testing operation site comprises a box 1, such as Figure 1 , Figure 2 , Figure 4 As shown, a pneumatic diaphragm pump 2 is installed inside the box body 1, an air inlet pipe 3 and an air outlet pipe 21 are fixed on one side of the box body 1 and connected to the pneumatic diaphragm pump 2, a liquid inlet pipe 5 and a liquid outlet pipe 4 are installed on one side of the box body 1, a flow meter 6 is installed on the liquid outlet pipe 4, a fixing component is fixed on one side of the box body 1 through a connecting block 19, and a rubber pad 20 is fixed on the outer wall of the box body 1.

[0030] During operation, the device is fixed to the side wall of the circulation pool by means of a fixing assembly, the air inlet pipe 3 is connected to the air source, the liquid inlet pipe 5 is connected to the circulation pool, the liquid outlet pipe 4 is connected to the wellbore, compressed air is injected into the pneumatic diaphragm pump 2, the pneumatic diaphragm pump 2 is started, and the liquid is injected into the wellbore through the liquid inlet pipe 5 and the liquid outlet pipe 4, the flow meter 6 accurately measures the liquid flowing through the liquid outlet pipe 4 and displays it, and the rubber pad 20 cushions the device during transportation and loading and unloading to prevent parts of the device from being damaged due to collision.

[0031] By providing the pneumatic diaphragm pump 2 and the flow meter 6, the injected liquid can be accurately measured, the injection amount can be accurately controlled, and potential safety hazards can be reduced.

[0032] In order to facilitate the loading and unloading of the device, Figure 2 , Figure 3 As shown, the fixing assembly includes an L-shaped fixing plate 7, a telescopic hole 11 is opened on the upper end of one side of the L-shaped fixing plate 7, the telescopic hole 11 is slidably matched with an L-shaped fixing plate 2 8, limiting grooves 12 are opened on both sides of the telescopic hole 11, and sliding blocks 13 matched with the limiting grooves 12 are fixed on both sides of the L-shaped fixing plate 2 8, and connecting plates 9 are fixed on the top surfaces of the L-shaped fixing plate 1 7 and the L-shaped fixing plate 2 8, the connecting plates 9 cooperate with each other, and bolts 10 are passed through the connecting plates 9.

[0033] When fixing, loosen the bolts 10, move the L-shaped fixing plate 1 7 and the L-shaped fixing plate 2 8 away from each other, clamp the side wall of the circulating pool between the L-shaped fixing plate 1 7 and the L-shaped fixing plate 2 8, tighten the bolts 10, and fix the device.

[0034] By setting the fixing components, the stability of the device is improved and the loading and unloading of the device is facilitated.

[0035] Example 2

[0036] A pneumatic continuous liquid filling device for oil testing operation site, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 1 , Figure 5 As shown, fixing clips 14 are fixed to the upper ends of both sides of the box body 1, and the fixing clips 14 include a connecting frame 15. A rotating shaft 16 is fixed inside the connecting frame 15. A splint 18 is passed through the rotating shaft 16. The splint 18 cooperates with the surface of the box body 1. A torsion spring 17 is fixed on the rotating shaft 16 to cooperate with the splint 18, and a spike is provided on one side of the splint 18.

[0037] When fixing the rubber pad 20 , press the clamp 18 to open it, put the rubber pad 20 on the surface of the box 1 , loosen the clamp 18 , and under the action of the torsion spring 17 , the clamp 18 rotates to insert the spike into the rubber pad 20 to fix the rubber pad 20 .

[0038] By providing the fixing clip 14 , it is convenient to replace the rubber pad 20 , thereby ensuring the buffering effect of the rubber pad 20 and improving the practicability of the device.

[0039] Working principle: During operation, the device is fixed to the side wall of the circulation pool through the fixing assembly, the air inlet pipe 3 is connected to the air source, the liquid inlet pipe 5 is connected to the circulation pool, the liquid outlet pipe 4 is connected to the wellbore, and compressed air is injected into the pneumatic diaphragm pump 2. The pneumatic diaphragm pump 2 is started, and the liquid is injected into the wellbore through the liquid inlet pipe 5 and the liquid outlet pipe 4. The flow meter 6 accurately measures the liquid flowing through the liquid outlet pipe 4 and displays it. The rubber pad 20 cushions the device during transportation and loading and unloading to prevent the device from causing damage to parts due to collision. When fixing the rubber pad 20, press the clamp 18 to open the clamp 18, place the rubber pad 20 on the surface of the box 1, loosen the clamp 18, and under the action of the torsion spring 17, the clamp 18 rotates, inserts the spike into the rubber pad 20, and fixes the rubber pad 20.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pneumatic continuous liquid filling device for oil testing operation site, comprising a box (1), characterized in that: A pneumatic diaphragm pump (2) is installed inside the box (1); an air inlet pipe (3) and an air outlet pipe (21) are fixed on one side of the box (1) and are connected to the pneumatic diaphragm pump (2); a liquid inlet pipe (5) and a liquid outlet pipe (4) are installed on one side of the box (1); a flow meter (6) is installed on the liquid outlet pipe (4); and a fixing component is fixed on one side of the box (1) via a connecting block (19).

2. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 1 is characterized in that: The fixing assembly comprises an L-shaped fixing plate (7), a telescopic hole (11) is provided at the upper end of one side of the L-shaped fixing plate (7), and the telescopic hole (11) is slidably matched with an L-shaped fixing plate (8).

3. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 2 is characterized in that: Limiting grooves (12) are provided on both sides of the telescopic hole (11), and sliding blocks (13) cooperating with the limiting grooves (12) are fixed on both sides of the second L-shaped fixing plate (8).

4. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 2 is characterized in that: The top surfaces of the L-shaped fixing plate 1 (7) and the L-shaped fixing plate 2 (8) are both fixed with connecting plates (9), and the connecting plates (9) cooperate with each other.

5. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 4 is characterized in that: Bolts (10) are passed through the connecting plate (9).

6. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 1 is characterized in that: A rubber pad (20) is fixed to the outer wall of the box body (1), and fixing clips (14) are fixed to the upper ends of both sides of the box body (1).

7. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 6 is characterized in that: The fixing clamp (14) comprises a connecting frame (15), and a rotating shaft (16) is fixed inside the connecting frame (15).

8. The on-site pneumatic continuous liquid filling device for oil testing operation according to claim 7 is characterized in that: A clamping plate (18) is provided on the rotating shaft (16), and the clamping plate (18) matches with the surface of the box body (1). A torsion spring (17) is fixed on the rotating shaft (16) and matches with the clamping plate (18).

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