CN114136702A - High-pressure sampler for sampling polymer solution and use method thereof - Google Patents
High-pressure sampler for sampling polymer solution and use method thereof Download PDFInfo
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- CN114136702A CN114136702A CN202111302452.1A CN202111302452A CN114136702A CN 114136702 A CN114136702 A CN 114136702A CN 202111302452 A CN202111302452 A CN 202111302452A CN 114136702 A CN114136702 A CN 114136702A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 125
- 238000005070 sampling Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Hydrology & Water Resources (AREA)
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Abstract
The application relates to a high-pressure sampler for sampling polymer solution, which belongs to the field of samplers and comprises a connecting pipeline and a sampling unit, wherein the sampling unit is positioned on the side of the connecting pipeline and communicated with the inside of the connecting pipeline; the sampling unit comprises a hollow cylinder, an inlet valve is arranged at one end of the cylinder, a discharge valve is arranged at the other end of the cylinder, and one end of the cylinder with the inlet valve is detachably connected with a valve group. The application also discloses a use method of the high-pressure sampler for sampling the polymer solution, and the application has the effect of reducing the labor cost and the time cost in the sampling process of the polymer solution.
Description
Technical Field
The present application relates to the field of samplers, and more particularly, to a high pressure sampler for sampling polymer solutions and a method of using the same.
Background
The polyacrylamide is also called polymer, in the tertiary oil recovery application of oil fields, after the polymer solution is prepared, the polymer solution is aged for a period of time and then injected into an oil reservoir, but before the polymer solution is injected into an oil well, sampling is needed to detect relevant parameters such as viscosity, filtration factors and the like, and the polymer solution can be injected into the oil reservoir under the condition that the relevant parameters are qualified.
In the process of sampling the polymer, because of the huge pressure difference between the sampler and the pipeline, the polymer solution can be directly sprayed into the sampler at the moment of opening the inlet valve of the sampler, and the polymer solution has strict requirements on the flow rate, and the mechanical shear generated by overhigh flow rate easily causes the loss of the viscosity of the polymer solution, thereby influencing the detection data.
To preserve the viscosity and authenticity of other parameters to the maximum extent, the solution in the tubing is allowed to slowly flow into the sampler during sampling. In order to replace the rejected solution which has just been injected into the sampler, 3-5 times the amount of the rejected solution (the sampling flow rate does not exceed 0.3 m/s) is required to replace the rejected solution. The whole sampling process therefore takes 40-60 minutes. The environment of the oil field is generally severe, such as desert areas and the like. The sampling process several times a day is a huge waste of physical strength and time for the operator.
Disclosure of Invention
In order to reduce labor and time costs in the sampling of polymer solutions. The present application provides a high pressure sampler for sampling a polymer solution.
The high-pressure sampler for sampling polymer solution provided by the application adopts the following technical scheme:
a high-pressure sampler for sampling polymer solution comprises a connecting pipeline and a sampling unit which is positioned on the side of the connecting pipeline and communicated with the inside of the connecting pipeline, wherein a valve group is arranged between the sampling unit and the connecting pipeline, and the connection and disconnection between the connecting pipeline and the sampling unit are controlled through the valve group; the sampling unit comprises a hollow cylinder, an inlet valve is arranged at one end of the cylinder, a discharge valve is arranged at the other end of the cylinder, and one end of the cylinder with the inlet valve is detachably connected with a valve group.
Through adopting above-mentioned technical scheme, when taking a sample to polymer solution, at first will dock pipeline and sampling unit intercommunication through the valve group, the inside of sampling unit is sprayed to the inside polymer solution of docking pipeline under the effect of pressure to the flow through, sprays to the inside polymer solution of sampling unit because of spraying to the sampling unit fast to be unqualified polymer solution under the effect of mechanical shearing. The discharge valve of the sampling unit is opened slowly, when the discharge valve is opened, the pressure difference between the butt joint pipeline and the sampling unit is utilized, the air in the sampling unit and the unqualified polymer solution sprayed into the sampling unit are discharged from the discharge valve under the pushing of the qualified polymer solution slowly entering the sampling unit, after the air in the sampling unit and the unqualified polymer solution are completely discharged through the discharge valve, the qualified polymer solution is reserved in the sampling unit, and finally the sampling unit is taken down and sent to the detection mechanism for detection, so that the parameter value with high accuracy can be obtained.
Optionally, a flow channel capable of continuously changing directions is arranged in the cylinder.
By adopting the technical scheme, the flow channel for continuously changing the direction is arranged in the barrel, the unqualified polymer solution sprayed into the barrel is difficult to mix with the qualified polymer solution entering the barrel, so that the sampling quality of the qualified polymer reserved in the final sampling unit is improved, and the accuracy of data in the detection of the polymer solution in the sampling unit is improved.
Optionally, the flow channel is shaped as a spiral.
Through adopting above-mentioned technical scheme, through setting up the runner into the heliciform to the length of extension polymer solution at the inside flow path of barrel, when polymer solution sprays inside the barrel, the heliciform runner can slow down the flow direction of spraying into the inside polymer solution of barrel gradually, plays the purpose of protecting the barrel.
Optionally, the inlet valve and the discharge valve both adopt three-way valves, and one of the interfaces of the inlet valve and the discharge valve is provided with a drain pipe.
By adopting the technical scheme, when the unqualified polymer solution and air in the sampling unit are discharged, the discharge valve is opened, so that the unqualified polymer solution is discharged from the liquid discharge pipe on the discharge valve; when the qualified polymer solution is taken out from the sampling pipe, the qualified polymer solution is discharged from the liquid discharge pipe on the inlet valve, so that the problem of cross contamination of the qualified polymer solution is reduced.
Optionally, the cylinder is a transparent cylinder.
Through adopting above-mentioned technical scheme, thereby the sampling personnel can see through the lateral wall of barrel and see the condition of the inside polymer solution of barrel when taking a sample.
Optionally, a metal sheath is sleeved outside the barrel, and an observation port penetrating through the side wall of the sheath is formed in the side wall of the sheath.
Through adopting above-mentioned technical scheme, through setting up the sheath, can protect the barrel, reduce the barrel because of the damage that external environment caused, can increase the compressive capacity of barrel simultaneously.
Optionally, the two ends of the cylinder body are both provided with a tapered closing-in structure.
By adopting the technical scheme, when high-pressure polymer solution enters the cylinder body, the polymer solution is scattered in a radiation mode due to the guiding effect of the tapered closing-in structure when passing through the tapered closing-in structure, the polymer solution can be diffused at a wide tapered angle to form tapered water flow when flowing through the end with a larger diameter in the tapered closing-in structure, and partial energy is eliminated through friction and aeration between the water flow and air in the cylinder body, so that the efficiency effect is achieved.
Optionally, two ends of the connecting pipeline are both provided with pipeline butt flanges.
Through adopting above-mentioned technical scheme, when being connected connecting tube and the pipeline of transportation polymer solution, conveniently be in the same place connecting tube and pipeline butt joint, and when needs are dismantled, be convenient for connecting tube's dismantlement.
Optionally, the valve group includes at least two valves connected in sequence.
Through adopting above-mentioned technical scheme, because the pressure in the polymer solution pipeline is higher, after dismantling the sample unit, can reduce the difficult condition that reveals appears from valve group department of polymer solution through a plurality of valves.
The application provides a use method of a high-pressure sampler for sampling polymer solution, which adopts the following technical scheme:
a method for using a high-pressure sampler for sampling polymer solution comprises the following steps:
when sampling the polymer solution, firstly, an inlet valve and a discharge valve of a sampling unit are in a closed state;
opening the valve group, then opening an inlet valve of the sampling unit to communicate the connecting pipeline with the interior of the cylinder of the sampling unit, spraying the polymer solution into the interior of the cylinder under the action of pressure, wherein the polymer solution sprayed into the interior of the cylinder is unqualified polymer solution;
slowly opening the discharge valve and controlling the discharge flow rate of the discharge valve, and slowly discharging the air in the cylinder and the unqualified polymer solution sprayed into the cylinder until the unqualified polymer solution is completely discharged out of the cylinder, wherein the qualified polymer solution slowly enters the cylinder and is fully stored in the cylinder;
and closing the discharge valve, the inlet valve and the valve group in sequence to enable the qualified polymer solution to be retained in the cylinder body, and finishing sampling.
Through adopting above-mentioned technical scheme, can discharge the unqualified polymer solution that sprays the sample cell inside, the solution that finally makes the interior retention of sample cell is qualified polymer solution to when the polymer solution to taking out in the sample cell detects, can obtain more accurate parameter.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the unqualified polymer solution sprayed into the sampling unit can be discharged, and finally the solution remained in the sampling unit is qualified polymer solution, so that more accurate parameters can be obtained when the polymer solution taken out of the sampling unit is detected;
2. through the runner that sets up the continuous transform direction in the inside of barrel, spout at first into the inside nonconforming polymer solution of barrel and be difficult for and enter into the qualified polymer solution of barrel inside after and take place to mix to improve the sampling quality of the qualified polymer of the interior retention of final sampling unit, promote the accuracy to the polymer solution detection time data in the sampling unit.
Drawings
FIG. 1 is a schematic diagram of a high pressure sampler according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a sampling unit according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a cartridge according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a sampling unit with a sheath wrapped outside a barrel according to an embodiment of the present application.
Description of reference numerals: 1. connecting a pipeline; 11. a pipeline butt flange; 12. a communicating pipe; 2. a sampling unit; 21. a barrel; 211. a mouth-closing section; 22. an inlet valve; 23. a discharge valve; 24. a first drain pipe; 25. a second drain pipe; 26. a helical blade; 27. a sheath; 271. a viewing port; 3. a valve group; 31. and (4) a valve.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a high-pressure sampler for sampling a polymer solution.
Referring to fig. 1, a high pressure sampler for sampling a polymer solution includes a connection pipe 1 and a sampling unit 2 located laterally of the connection pipe 1 and communicating with the inside of the connection pipe 1. The axial direction of the sampling unit 2 is arranged perpendicular to the axial direction of the connecting pipe 1. A valve group 3 formed by sequentially arranging and communicating a plurality of valves 31 is arranged between the sampling unit 2 and the connecting pipeline 1.
The number of the valves 31 in the valve group 3 is at least two, in this embodiment, the number of the valves 31 is two, and different kinds of valves are used for the valves 31. The valve group 3 connects the sampling unit 2 and the connecting pipe 1 together and the connection or disconnection between the sampling unit 2 and the connecting pipe 1 can be controlled by the valve group 3.
When a high-pressure sampler for sampling a polymer solution is installed in a polymer solution production system, the connection pipe 1 communicates with a pipe for conveying the polymer solution in the polymer solution production system. The produced polymer solution passes through the inside of the connecting pipe 1 during transportation.
Both ends of connecting tube 1 all are provided with pipeline flange 11, thereby can be quick put through connecting tube 1 and the pipeline of carrying polymer solution among the polymer solution production system mutually through pipeline flange 11. The pipe butt flange 11 can be fixed with the connecting pipe 1 by adopting a threaded connection or a direct welding way.
Referring to fig. 1 and 2, the sampling unit 2 includes a hollow cylinder 21 having two open ends, and the cylinder 21 is a transparent cylinder made of a transparent material. Through being the transparent barrel with barrel 21 design to can be when taking a sample to polymer solution, the condition that the inside polymer solution of barrel 21 flows can be seen clearly to the personnel of being convenient for to take a sample.
An inlet valve 22 is installed at an opening of one end of the cylinder 21, and a discharge valve 23 is installed at an opening of the other end. The inlet valve 22 and the discharge valve 23 are three-way valves. One port of the inlet valve 22 is connected with the cylinder 21 through threads, one port is connected with a valve 31 which is farthest away from the connecting pipeline 1 in the valve group 3 through threads or a flange, the rest ports are provided with a first exhaust pipe 24, and the first exhaust pipe 24 is connected with the port of the inlet valve 22 through threads. One of the ports of the discharge valve 23 is screw-coupled to the cylinder 21, and a second discharge pipe 25 is mounted on one port, and the second discharge pipe 25 is screw-coupled to the port of the discharge valve 23. The remaining port of the discharge valve 23 is left idle and used for connecting other pipes according to actual needs, for example, the remaining port of the discharge valve 23 is connected with a pipeline, and the qualified polymer solution is directly discharged into the holding container. This kind of mode is fit for the sample point and the nearer operating mode in laboratory, and the advantage need not make a round trip to install sampling tube 2, makes sampling tube 2 be in always installing on valve group 3.
The end of the first drain pipe 24 remote from the inlet valve 22 is bent in the direction of the connecting pipe 1. The end of the second drain pipe 25 remote from the drain valve 23 is also bent in the direction of the connecting line 1.
Referring to fig. 3, a spiral blade 26 is provided inside the cylinder 21, and the spiral blade 26 is fixed inside the cylinder 21. By providing the helical blades 26 inside the cylindrical body 21, a helical flow path whose direction is continuously changed is formed inside the cylindrical body 21. The flow passage is formed to communicate with the inlet valve 22 at one end and the discharge valve 23 at the other end.
The two ends of the cylinder 21 are provided with tapered closing sections 211 with the cross-sectional area gradually reduced from the middle part of the cylinder 21 to the end of the cylinder 21.
Referring to fig. 4, in order to increase the structural strength of the cylindrical body 21, a metal-supported jacket 27 is additionally provided outside the cylindrical body 21, the jacket 27 is fixed to the outside of the cylindrical body 21, and the inner surface of the jacket 27 is attached to the outer surface of the cylindrical body 21. The side wall of the sheath 27 is provided with an observation port 271 penetrating through the side wall of the sheath 27, and the observation port 271 enables a sampler to see the barrel 21 clearly.
Referring to fig. 1, a communication pipe 12 extending outward is disposed on a side wall of the connecting pipe 1, and the communication pipe 12 and the connecting pipe 1 are integrally formed. The inside of the communication pipe 12 communicates with the inside of the connection pipe 1. The valve 31 of the valve group 3 close to the connecting pipeline 1 is butted and communicated with one end of the communicating pipe 12 far away from the connecting pipeline 1. The valve 31 is connected with the connecting pipeline 1 through flanges or threads. Adjacent valves 31 are either threaded or flanged.
The specific method of use of the high pressure sampler for sampling polymer solutions is as follows:
when sampling the polymer solution, the inlet valve 22 and the discharge valve 23 of the sampling unit 2 are first closed;
after ensuring that the inlet valve 22 and the discharge valve 23 are in the closed state, all the valves 31 of the valve group 3 are opened to communicate the inside of the connecting pipe 1 with the ports of the inlet valve 22 that meet the valves 31. Then, the inlet valve 22 of the sampling unit 2 is opened to communicate the inside of the sampling unit 2 with the connection pipe 1. After the sampling unit 2 is communicated with the inside of the connecting pipeline 1, the polymer solution in the connecting pipeline 1 is in a high-pressure environment, the inside of the sampling unit 2 is in a normal-pressure state, the polymer solution in the connecting pipeline 1 is sprayed into the inside of the cylinder 21 of the sampling unit 2 under the action of pressure, and the polymer solution sprayed into the inside of the cylinder 21 is unqualified polymer solution.
The discharge valve of the sampling unit 2 is slowly opened to communicate the second drain pipe 25 with the inside of the cylinder 21, and at this time, the air located inside the sampling unit 2 and the off-grade polymer solution sprayed into the inside of the cylinder 21 are discharged through the discharge valve 23. At the time of discharging the gas and the off-grade polymer solution, the discharge amount of the discharge valve 23 is controlled to control the flow rate of the polymer solution until the off-grade polymer solution is completely discharged and the off-grade polymer solution slowly enters the inside of the cylinder 21 and fills the cylinder 21.
The discharge valve 23, the inlet valve 22 and each valve 31 of the valve group 3 are closed in turn so that the interior of the cylinder 21 forms a completely closed space so that the qualified polymer solution entering the interior of the cylinder remains inside the cylinder 21.
And finally, taking down the whole sampling unit 2 from the valve 31 farthest from the connecting pipeline 1 to finish sampling.
Alternatively, a hose is connected to the remaining port of the discharge valve 23, and the acceptable polymer solution is discharged into the holding container through the hose.
The implementation principle of the high-pressure sampler for sampling the polymer solution in the embodiment of the application is as follows:
when sampling, the valve set 3 and the inlet valve 22 of the sampling unit 2 are opened, the polymer solution is sprayed into the sampling unit due to the pressure, the polymer solution sprayed into the cylinder 21 is unqualified polymer solution, and the qualified polymer solution needs to be replaced to ensure the accuracy of the final detection data of the polymer solution. By slowly opening the discharge valve 23 and controlling the discharge speed of the discharge valve 23, the air inside the cylinder 21 and the unqualified polymer solution are slowly discharged, and the qualified polymer solution slowly enters the inside of the cylinder 21 until the cylinder 21 is full of the qualified polymer solution.
By providing the flow channel with continuously changing directions inside the cylinder 21, when the polymer solution enters the flow channel, the polymer solution flows in the direction of the discharge valve 23 under the guidance of the flow channel. Therefore, the defective polymer solution that has entered the cylinder 21 first is accumulated in the cylinder 21 and mixed with the defective polymer solution that has entered the cylinder 21 later, and the detection result of the polymer solution is not affected.
When the discharged polymer solution reaches the volume of the cylinder 21, it means that the defective liquid in the cylinder 21 is replaced by the acceptable liquid. At this point the discharge valve 23 is closed and then all the valves 31 of the valve group 3 are closed in sequence. After the inlet valve 22 and all the valves 31 of the valve group 3 are closed, the inlet valve 22 is separated from the connected valves 31, and the sampling unit 2 can be completely removed and sent to a detection mechanism to detect the polymer solution in the cylinder 21.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A high pressure sampler for sampling a polymer solution, the high pressure sampler comprising: the device comprises a connecting pipeline (1) and a sampling unit (2) which is positioned on the lateral side of the connecting pipeline (1) and communicated with the inside of the connecting pipeline (1), wherein a valve group (3) is arranged between the sampling unit (2) and the connecting pipeline (1), and the connection and disconnection between the connecting pipeline (1) and the sampling unit (2) are controlled through the valve group (3); the sampling unit (2) comprises an internal hollow cylinder (21), an inlet valve (22) is arranged at one end of the cylinder (21), a discharge valve (23) is arranged at the other end of the cylinder (21), and one end of the cylinder (21) with the inlet valve (22) is detachably connected with a valve set (3).
2. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: and a flow channel for continuously changing the direction is arranged in the cylinder (21).
3. A high pressure sampler for sampling a polymer solution according to claim 2, wherein: the flow channel is in a spiral shape.
4. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: the inlet valve (22) and the discharge valve (23) both adopt three-way valves, and a liquid discharge pipe is arranged on one of the interfaces of the inlet valve (22) and the discharge valve (23).
5. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: the cylinder body (21) adopts a transparent cylinder body (21).
6. A high pressure sampler for sampling polymer solution according to claim 5 wherein: the outer sleeve of barrel (21) is equipped with sheath (27) of metal material, set up on the lateral wall of sheath (27) and run through viewing aperture (271) of sheath (27) lateral wall.
7. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: the two ends of the cylinder body (2) are provided with tapered closing-in structures.
8. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: and two ends of the connecting pipeline (1) are provided with pipeline butt flanges (11).
9. A high pressure sampler for sampling a polymer solution according to claim 1, wherein: the valve group (3) comprises at least two valves (31) which are connected in sequence.
10. A method of using a high pressure sampler for sampling polymer solutions according to any one of claims 1 to 9, characterized in that: the method comprises the following specific steps:
when sampling the polymer solution, firstly, an inlet valve (22) and a discharge valve (23) of a sampling unit (2) are in a closed state;
opening the valve group (3), then opening an inlet valve (22) of the sampling unit (2) to enable the connecting pipeline (1) to be communicated with the interior of a cylinder body (21) of the sampling unit (2), at the moment, spraying the polymer solution into the interior of the cylinder body (21) under the action of pressure, and enabling the polymer solution sprayed into the interior of the cylinder body (21) to be unqualified polymer solution;
slowly opening the discharge valve (23) and controlling the discharge flow rate of the discharge valve (23), and slowly discharging the air in the cylinder (21) and the unqualified polymer solution sprayed into the cylinder (21) until the unqualified polymer solution is completely discharged out of the cylinder (21), wherein the qualified polymer solution slowly enters the cylinder (21) and fills the cylinder (21);
and closing the discharge valve (23), the inlet valve (22) and the valve group (3) in sequence to enable the qualified polymer solution to be retained in the cylinder body (21) to finish sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302452.1A CN114136702A (en) | 2021-11-04 | 2021-11-04 | High-pressure sampler for sampling polymer solution and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302452.1A CN114136702A (en) | 2021-11-04 | 2021-11-04 | High-pressure sampler for sampling polymer solution and use method thereof |
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| CN114136702A true CN114136702A (en) | 2022-03-04 |
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| CN202111302452.1A Pending CN114136702A (en) | 2021-11-04 | 2021-11-04 | High-pressure sampler for sampling polymer solution and use method thereof |
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