Visual recovery device for oil well produced fluid sampling

Abstract

The utility model discloses an oil well produced liquid sampling visual recovery device which comprises a liquid storage tank, and an exhaust valve is arranged on the liquid storage tank. The transparent sampling tube is connected to the liquid storage tank; the liquid pumping assembly is arranged on the liquid storage tank; the liquid flow pipe is connected to an oil well liquid production device, is communicated with the transparent sampling pipe through a liquid inlet valve, and is connected with the output end of the liquid pumping assembly through a liquid outlet one-way valve; according to the device, when sampling analysis is not needed, the sampling valve can be closed, the seed state and form of the produced fluid can be observed only through the transparent sampling pipe, the produced fluid is pumped back through the liquid pumping assembly, waste of the produced fluid and hazardous waste treatment are avoided, when sampling analysis is needed, only the sampling valve needs to be opened, part of the produced fluid is taken from the sampling valve for sample inspection, and the sampling efficiency is improved. The device is simple and convenient, prevents a worker from sucking toxic gas in produced liquid by mistake, improves the sampling safety, and in addition, in the sampling process, the whole device is in closed circulation, oil leakage is avoided, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well sampling, in particular to a visual recovery device for oil well production liquid sampling. Background Art

[0002] Oil well sampling is a process in which oil workers take a certain amount of oil and water samples from the oil well for testing and analysis in order to determine the oil quality, oil production capacity, water content and other information of the oil layer during oil well production.

[0003] The sampling method currently commonly used on site is: the sampling personnel stand at the upwind position, align the sewage bucket with the sampling elbow, slowly open the sampling valve, put the dead oil into the sewage bucket, and when fresh production fluid spurts out, change the sampling bucket to receive it, and then analyze the sample; when the oil well production fluid is relatively stable, the sample is not analyzed, and sampling is only for visual observation of the oil and water content.

[0004] The existing sampling method has high requirements on operators. Standing downwind will inhale harmful gases in the produced liquid. Careless operation may cause the sampling liquid to spray onto the ground and pollute the environment. At the same time, the volume of the sampling liquid will increase, increasing the difficulty of on-site hazardous waste treatment. Summary of the invention

[0005] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a visual recovery device for oil well production fluid sampling, aiming to solve the problems of low efficiency, inconvenient observation and sample waste in the sampling method of the prior art.

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

[0007] In a first aspect, a visualization recovery device for sampling oil well production fluids comprises:

[0008] A liquid storage tank, wherein an exhaust valve is provided on the liquid storage tank;

[0009] A transparent sampling tube is detachably connected to the liquid storage tank, and a sampling valve is extended from the lower part of the transparent sampling tube;

[0010] A pump assembly is arranged on the liquid storage tank and connected to the bottom of the liquid storage tank;

[0011] The liquid flow pipe is connected to the oil well liquid production device and is connected to the transparent sampling tube through the liquid inlet valve, and the liquid flow pipe is connected to the output end of the pump liquid component through the liquid outlet one-way valve;

[0012] The funnel is connected to the liquid storage tank through a valve.

[0013] Furthermore, it also includes:

[0014] A ball valve assembly is provided at the upper end of the transparent sampling tube;

[0015] The ball valve switch is arranged on the ball valve assembly.

[0016] Furthermore, connecting flanges are provided at both ends of the transparent sampling tube, and a plurality of rods are provided between the two connecting flanges.

[0017] Furthermore, the transparent sampling tube is connected to the liquid storage tank through a bellows, and a sampling valve is extended and connected to the bellows.

[0018] Furthermore, the liquid storage tank comprises a shell and an upper cover, and the shell and the upper cover are sealed and connected.

[0019] Furthermore, the pump liquid assembly includes a hand pump, which is arranged on the liquid storage tank and extends inwardly, and is also provided with a hand crank, a hand sleeve and a hand rod.

[0020] The technical solution adopted by the utility model has the following beneficial effects:

[0021] In the present application, when sampling and analysis are not needed, the sampling valve can be closed, and only the type and form of the produced liquid can be observed through the transparent sampling tube, and the produced liquid can be pumped back through the liquid pump assembly to avoid waste of produced liquid and hazardous waste treatment. When sampling and analysis are needed, it is only necessary to open the sampling valve and take part of the produced liquid from the sampling valve for sample inspection. This is simple and convenient, avoids the staff from accidentally inhaling toxic gases in the produced liquid, and improves the safety of sampling. In addition, during the sampling process, the device is in a closed cycle as a whole, and no oil leakage will occur, reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a first-view device for visually recovering oil well production fluid sampling provided by the utility model;

[0023] Figure 2 This is a second-view structural schematic diagram of an oil well production fluid sampling visualization recovery device provided by the utility model.

[0024] 1. Liquid storage tank; 2. Exhaust valve; 3. Transparent sampling tube; 4. Sampling valve; 5. Hand pump; 6. Liquid flow tube; 7. Liquid inlet valve; 8. Liquid outlet check valve; 9. Ball valve assembly; 10. Ball valve switch; 11. Connecting flange; 12. Rod; 13. Bellows; 14. Funnel; 15. Valve. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. 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.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0027] It should also be noted that the same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is 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. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In this example, see Figure 1 and Figure 2 A visualization recovery device for sampling produced fluid in an oil well comprises a fluid storage tank 1, on which is provided an exhaust valve 2; a transparent sampling tube 3 is detachably connected to the fluid storage tank 1, and a sampling valve 4 is extended from the lower portion of the transparent sampling tube 3; a pump liquid assembly is arranged on the fluid storage tank 1 and is connected to the bottom of the fluid storage tank 1; a liquid flow tube 6 is connected to the fluid production device of the oil well, and is communicated with the transparent sampling tube 3 through a liquid inlet valve 7, and the liquid flow tube 6 is connected to the output end of the pump liquid assembly through a liquid outlet one-way valve 8; a funnel 14 is connected to the fluid storage tank 1 through a valve 15.

[0030] When sampling and analysis are not required, the sampling valve 4 can be closed, and only the type and form of the produced liquid can be observed through the transparent sampling tube 3, and the produced liquid can be pumped back through the liquid pump assembly to avoid waste of produced liquid and hazardous waste treatment. When sampling, inspection and analysis are required, it is only necessary to open the sampling valve 4 and take part of the produced liquid from the sampling valve 4 for sample testing. This is simple and convenient, avoids the staff from accidentally inhaling toxic gases in the produced liquid, and improves the safety of sampling. In addition, during the sampling process, the device is in a closed cycle as a whole, and no oil leakage will occur, reducing environmental pollution.

[0031] It should be noted that, in this embodiment, please refer to Figure 1 and Figure 2 The liquid flow tube 6 is a three-way liquid flow tube 6. When sampling, the liquid inlet valve 7 is opened, and the produced liquid flows into the liquid storage tank 1 through the transparent sampling tube 3. The state of the produced liquid can be observed through the transparent sampling tube 3; when returning the liquid, the liquid inlet valve 7 is closed, and the produced liquid in the liquid storage tank 1 is pumped back to the surface process of the oil well production liquid by the pump liquid component, so as to realize the recovery of the produced liquid and avoid the treatment of hazardous waste.

[0032] In the implementation of the present utility model, please refer to Figure 1 and Figure 2 , connecting flanges 11 are provided at both ends of the transparent sampling tube 3, and a plurality of rods 12 are provided between the two connecting flanges 11 to form an enclosure protection for the transparent sampling tube 3. A ball valve assembly 9 is connected to the connecting flange 11 at the upper end, and a ball valve switch 10 is also provided on the ball valve assembly 9. When cleaning the transparent sampling tube 3, the ball valve switch 10 can be opened, and the inside of the tube can be scrubbed with cleaning tools such as cotton yarn; and a bellows 13 is connected to the connecting flange 11 at the lower end, so as to be connected and fixed with the liquid storage tank 1, and a sampling valve is extended from the bellows 13 to facilitate the collection of production liquid samples.

[0033] In addition, it should be noted that in this embodiment, the transparent sampling tube 3 is made of glass material, which is convenient for observation and can prevent corrosion caused by liquid production. The transparent sampling tube 3 can also be made of other transparent materials to observe the state of liquid production.

[0034] In this example, see Figure 1 and Figure 2 The liquid storage tank 1 includes a shell and an upper cover, and the shell and the upper cover are sealed to prevent leakage of produced liquid.

[0035] It should be understood that in this embodiment, please refer to Figure 1 and Figure 2 The pumping liquid component adopts a hand pump 5, which is arranged on the liquid storage tank 1 and extends inward, so as to pump all the produced liquid in the liquid storage tank 1 back to the surface process, and the hand pump 5 is also provided with a hand crank, a hand sleeve and a hand rod (not shown in the figure); in addition, the pumping liquid component can also adopt an electric liquid pump and other devices to save manpower and improve efficiency.

[0036] In other embodiments of the utility model, the transparent sampling tube can also be made of other materials with higher strength and better air tightness, such as Pam board, and similarly, valve elements such as the liquid inlet valve 7 can also be valve elements with better air tightness. Therefore, when in use, not only can the oil well production fluid be visually sampled, but also the gas products of oil and gas wells can be visually sampled and observed, thereby realizing diversified use of the device.

[0037] Specifically, the present invention includes the following steps when implemented:

[0038] 1. Installation: Connect the pipeline between the sampling port and the liquid flow pipe 6 of this device.

[0039] 2. Sampling: First, open the inlet valve 7 and the exhaust valve 2 of the device, close the ball valve switch 10, and the oil well produced liquid flows from the sampling port through the liquid flow tube 6, the inlet valve 7, the transparent sampling tube 3, the bellows 13, and the liquid storage tank 1. The air in the liquid storage tank 1 and the gas in the produced liquid are discharged from the exhaust valve 2. During the sampling process, the type and form of the oil well produced fluid flowing through the transparent sampling tube 3 are visually observed. If the sampling needs to be analyzed, the sampling valve 4 can be opened, and part of the produced liquid can be collected through the sampling valve 4 for inspection and analysis. After the analysis is completed, the valve 15 can be opened again, and the remaining produced liquid can be poured into the liquid storage tank 1 through the funnel 14, so as to facilitate the recovery of the analyzed samples.

[0040] 3. Recovery: Close the liquid inlet valve 7, open the sampling valve 4, operate the hand pump 5, and pump the sampled fluid back to the surface process.

[0041] 4. Scrub: After the recovery is completed, open the ball valve switch 10, use cotton yarn or other cleaning tools to reach into the transparent sampling tube 3 and scrub it.

[0042] The technical solution adopted by the utility model can achieve safe, convenient and environmentally friendly sampling during use, and has the following beneficial effects:

[0043] 1. Safety: Operators can stay away from the sampling ports in the ground process to avoid accidentally inhaling toxic gases;

[0044] 2. Convenient: After the device is connected to the sampling port, the sampling operation is simple and convenient;

[0045] 3. Environmental protection: The sampled liquid after inspection and analysis can be pumped back to the ground process, leaving no hazardous waste at the work site.

[0046] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the solutions disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the claims.

Claims

1. A visual recovery device for oil well production fluid sampling, characterized in that: include: A liquid storage tank, wherein an exhaust valve is provided on the liquid storage tank; A transparent sampling tube is detachably connected to the liquid storage tank, and a sampling valve is extended from the lower part of the transparent sampling tube; A pump assembly is arranged on the liquid storage tank and connected to the bottom of the liquid storage tank; The liquid flow pipe is connected to the oil well liquid production device and is connected to the transparent sampling tube through the liquid inlet valve, and the liquid flow pipe is connected to the output end of the pump liquid component through the liquid outlet one-way valve; The funnel is connected to the liquid storage tank through a valve.

2. The oil well production fluid sampling visualization recovery device according to claim 1, characterized in that: It also includes: A ball valve assembly is provided at the upper end of the transparent sampling tube; The ball valve switch is arranged on the ball valve assembly.

3. The oil well production fluid sampling visualization recovery device according to claim 1, characterized in that: The two ends of the transparent sampling tube are provided with connecting flanges, and a plurality of rods are provided between the two connecting flanges.

4. The oil well production fluid sampling visualization recovery device according to claim 1, characterized in that: The transparent sampling tube is connected to the liquid storage tank through a bellows, and a sampling valve is extended and connected to the bellows.

5. The oil well production fluid sampling visualization recovery device according to claim 1, characterized in that: The liquid storage tank comprises a shell and an upper cover, and the shell and the upper cover are sealed and connected.

6. The oil well production fluid sampling visualization recovery device according to claim 1, characterized in that: The pump assembly comprises a hand pump, which is arranged on the liquid storage box and extends inwardly. The hand pump is also provided with a hand crank, a hand sleeve and a hand rod.

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