CN211652204U - Polymer solution sampling device and polymer injection well wellhead assembly - Google Patents
Polymer solution sampling device and polymer injection well wellhead assembly Download PDFInfo
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- CN211652204U CN211652204U CN201921773871.1U CN201921773871U CN211652204U CN 211652204 U CN211652204 U CN 211652204U CN 201921773871 U CN201921773871 U CN 201921773871U CN 211652204 U CN211652204 U CN 211652204U
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Abstract
The utility model provides a polymer solution sampling device and a polymer injection well wellhead assembly, which comprises a decompression cylinder, a drainage tube, an emptying tube and a sampling tube, wherein the decompression cylinder is internally provided with a decompression cavity; annotate and gather well wellhead assembly including being used for to the well head tubular column of injecting polymer solution, locate the test valve of wellhead tubular column upper end and install the sampling device in the test gate top, polymer solution sampling device's drainage tube and test valve detachably are connected, and the internal diameter of drainage tube equals with the internal diameter of wellhead tubular column. The utility model discloses a sampling device compares with prior art, and is low to polymer solution's shearing degree, can realize the low-shear sample, guarantees authenticity and the validity of sample.
Description
Technical Field
The utility model relates to a sampling device, especially a polymer solution sampling device and notes gather well wellhead assembly.
Background
When the polymer flooding technology is implemented in an oil field development field, the authenticity and the effectiveness of a sample can be ensured by a scientific and reasonable sampling mode, so that the adhesion and damage condition of a ground flow can be accurately determined. However, the sampling device on the high-pressure pipeline in the current ground flow has a small pipe diameter, and a polymer sample flows into the sampling device at a high speed during sampling, so that the shearing degree of the sampling operation on the polymer solution is large, and the accuracy of the viscosity of the sample is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a polymer solution sampling device and notes gather well wellhead assembly to what exist when solving the prior art sample cuts serious problem to polymer solution.
In order to achieve the above object, the utility model provides a polymer solution sampling device, it includes that inside has the decompression chamber decompression section of thick bamboo, is used for with polymer solution drainage extremely drainage tube in the decompression chamber, be used for with the blow-down pipe of the polymer solution blowdown in the decompression chamber and be used for right the sampling tube of the polymer solution sample in the decompression chamber, the internal diameter in decompression chamber is greater than the internal diameter of drainage tube, the decompression section of thick bamboo have with inlet, leakage fluid dram and the sample connection of decompression chamber intercommunication, the drainage tube with the inlet passes through the control valve and connects, the blow-down pipe with the leakage fluid dram passes through the atmospheric valve and connects, the sampling tube with the sample connection passes through the sample valve and connects.
The polymer solution sampling device as described in, wherein the drain tube is detachably connectable to a test valve at an upper end of a wellhead string of the polymer injection well, and an inner diameter of the drain tube is equal to an inner diameter of the wellhead string.
The polymer solution sampling device, wherein the liquid inlet and the liquid outlet are respectively arranged at two opposite ends of the decompression cylinder, the decompression cavity is arranged between two ends of the decompression cylinder, the sampling port is arranged on the side wall of the decompression cylinder, and the sampling port is arranged between the liquid inlet and the decompression cavity.
The polymer solution sampling device, wherein, still be equipped with in the decompression section of thick bamboo with the water conservancy diversion passageway of decompression chamber intercommunication, the water conservancy diversion passageway is located the inlet with between the decompression chamber, the inlet, the water conservancy diversion passageway, the decompression chamber with the leakage fluid dram communicates in proper order, the internal diameter of water conservancy diversion passageway and the internal diameter of inlet all equal to the internal diameter of drainage tube, the sample connection is located on the lateral wall of water conservancy diversion passageway.
The polymer solution sampling device, wherein the decompression cavity comprises a first conical cavity, a cylindrical cavity and a second conical cavity which are sequentially arranged from the liquid inlet to the liquid outlet, the inner diameter of the first conical cavity is gradually enlarged from the liquid inlet to the cylindrical cavity, the inner diameter of the second conical cavity is gradually reduced from the cylindrical cavity to the liquid outlet, the maximum inner diameter of the first conical cavity and the maximum inner diameter of the second conical cavity are equal to the inner diameter of the cylindrical cavity, and the inner diameter of the liquid inlet and the minimum inner diameter of the first conical cavity are equal to the inner diameter of the drainage tube.
The polymer solution sampling device of claim, wherein the polymer solution sampling device further comprises a pressure gauge for measuring the pressure in the decompression cylinder, and the pressure gauge is arranged outside the decompression cylinder and connected with the decompression cylinder.
The polymer solution sampling device of, wherein the sampling valve is a high pressure ball valve.
The polymer solution sampling device of, wherein the blow valve is a high pressure needle type valve and the control valve is a high pressure ball valve.
The utility model also provides an annotate and gather well wellhead assembly, it is including the well head tubular column that is used for to the polymer solution of injection into in the well, locate well head tubular column upper end test valve and install the foretell polymer solution sampling device of test valve top, polymer solution sampling device's drainage tube with test valve detachably connects, the internal diameter of drainage tube with the internal diameter of well head tubular column equals.
The polymer injection well wellhead assembly of wherein the draft tube is removably connected to the test valve by slips.
The utility model discloses a polymer solution sampling device and notes gather well wellhead assembly's characteristics and advantage are:
1. the utility model discloses a polymer solution sampling device and notes gather well wellhead assembly through set up the decompression chamber in the decompression section of thick bamboo, can play the pressure release effect to the polymer solution that gets into sampling device, reduces the velocity of flow of polymer solution, controls the speed of emptying through setting up the atmospheric valve, also can make polymer solution get into sampling device with lower velocity of flow in, compare with prior art, the utility model discloses a sampling device is low to the shearing degree of polymer solution, can realize the low-shear sampling, guarantees authenticity and the validity of sample;
2. the utility model discloses a polymer solution sampling device and annotate and gather well wellhead assembly, through installing sampling device on wellhead assembly to connect sampling device and test valve detachably, make sampling device can to annotate the sample well of different and gather, solved the current sampling device can't dismantle and sample the fixed problem in position;
3. the utility model discloses a polymer solution sampling device and notes gather well wellhead assembly through setting up the decompression chamber into the middle part big, the little syllogic structure in both ends, can avoid shearing and the viscosity loss because of the polymer that sudden reducing caused.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural view of a polymer solution sampling device according to the present invention.
Main element number description:
1. a pressure reducing cylinder;
11. a decompression chamber; 111. a first conical cavity; 112. a cylindrical cavity; 113. a second conical cavity;
12. a liquid inlet; 13. a liquid discharge port; 14. a sampling port; 15. a flow guide channel;
2. a drainage tube; 3. an emptying pipe; 4. a sampling tube; 5. a control valve;
6. an atmospheric valve; 7. a sampling valve; 8. a pressure gauge; 9. a communication pipe is provided.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Where adjective or adverbial modifiers "horizontal" and "vertical", "upper" and "lower", "left" and "right", "top" and "bottom", "inner" and "outer" are used merely to facilitate relative reference between sets of terms, and do not describe any particular directional limitation on the modified terms. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in FIG. 1, the utility model provides a polymer solution sampling device, it includes that inside has a decompression section of thick bamboo 1 of decompression chamber 11, a drainage tube 2 for inciting somebody to action polymer solution drainage to decompression chamber 11, a blow-down pipe 3 for inciting somebody to action polymer solution in the decompression chamber 11 empties, and be used for the sampling tube 4 to the polymer solution sample in the decompression chamber 11, the internal diameter of decompression chamber 11 is greater than drainage tube 2's internal diameter, decompression section of thick bamboo 1 has inlet 12 with decompression chamber 11 intercommunication, discharge opening 13 with decompression chamber 11 intercommunication and the sample connection 14 that communicates with decompression chamber 11, drainage tube 2 passes through control valve 5 with inlet 12 and is connected, blow-down pipe 3 passes through blow-down valve 6 with discharge opening 13 and is connected, sampling tube 4 passes through sample valve 7 with sample connection 14.
The utility model discloses a polymer solution sampling device's application method does: firstly closing a control valve 5 and a sampling valve 7, then connecting a drainage tube 2 with a polymer injection pipeline, then opening the control valve 5 and an emptying valve 6, enabling the polymer solution to flow into a decompression cylinder 1 through the drainage tube 2, then discharging (namely emptying) through an emptying tube 3, controlling the emptying speed through adjusting the emptying valve 6 so as to enable the polymer solution to flow into the decompression cylinder 1 at a lower flow speed, simultaneously reducing the flow speed of the polymer solution due to the pressure relief effect of a decompression cavity 11, thereby avoiding the polymer solution from being violently sheared due to high-speed flow into a sampling device, when the emptying amount is larger than the capacity of the decompression cylinder 1, firstly closing the emptying valve 6, then closing the control valve 5 so as to enable the pressure in the decompression cylinder 1 not to be influenced by the high pressure in the polymer injection pipeline, reducing the shearing caused when closing the control valve 5, then slowly opening the emptying valve 6, discharging part of the solution in the decompression cylinder 1 through the emptying tube 3, the pressure in the decompression cylinder 1 is changed into the atmospheric pressure state, then the sampling valve 7 is opened, and the polymer solution in the decompression cylinder 1 flows out from the sampling pipe 4 at a lower flow rate, so that sampling is realized.
The utility model discloses a polymer solution sampling device compares with prior art, and is low to the shearing degree of polymer solution, can realize the low-shear sample, makes the sample of taking out and injects the polymer solution of well down and has good uniformity, ensures authenticity and the validity of sample.
The utility model discloses a withstand voltage 30MPa of sampling device, for high pressure sampling device, can be used for taking a sample on high-pressure line.
In one embodiment, drainage tube 2 can be connected with the test valve detachably of the well head tubular column upper end of notes polymer well, so that the utility model discloses a sampling device can take a sample on the notes polymer well head of difference, and drainage tube 2's internal diameter equals with the internal diameter of well head tubular column to avoid causing polymer viscosity loss because of the reducing. For example, the drain 2 is removably connected to the test valve by slips.
The utility model discloses a well head tubular column is used for injecting polymer solution into tubular column in the pit, well head tubular column is located annotates and gathers the well head, be connected with other notes on the lateral wall of well head tubular column and gather the pipeline, when annotating and gathering, polymer solution flows into in the well head tubular column via other notes gather the pipeline, then flow into in the tubular column in the pit downwards again, when not taking a sample, the test valve of well head tubular column upper end is in the closed condition, in order to prevent the blowout of polymer solution in the well head tubular column, when taking a sample, open test valve, polymer solution in the well head tubular column upwards flows into sampling device under the effect of injection pressure.
As shown in FIG. 1, in one embodiment, a liquid inlet 12 and a liquid outlet 13 are respectively disposed at two opposite ends of a pressure reducing cylinder 1, a pressure reducing cavity 11 is disposed between two ends of the pressure reducing cylinder 1, a sampling port 14 is disposed on a side wall of the pressure reducing cylinder 1, the sampling port 14 is disposed between the liquid inlet 12 and the pressure reducing cavity 11, an outlet end of a vent pipe 3 is arc-shaped, an outlet of the vent pipe 3 faces downward so as to facilitate outflow of a polymer solution during evacuation, an outlet end of the sampling pipe 4 is arc-shaped, and an outlet of the sampling pipe 4 faces downward so as to facilitate outflow of the polymer solution during sampling.
During the use, with the vertical installation of sampling device, namely the inlet 12 of decompression section of thick bamboo 1 is down, drainage tube 2 is located decompression section of thick bamboo 1 below, decompression section of thick bamboo 1's leakage fluid dram 13 is up, blow-down pipe 3 is located decompression section of thick bamboo 1 top, sampling tube 4 is located decompression section of thick bamboo 1's side direction, for example sampling tube 4 is located decompression section of thick bamboo 1's left side or right side, sample connection 14 is located decompression chamber 11 below, so that the polymer solution in decompression chamber 11 flows from sample connection 14 low-speed under the action of gravity, make things convenient for the sample, still be convenient for simultaneously discharge the raffinate after the sample is accomplished, namely after the sample is accomplished, remaining polymer solution in the decompression chamber thoroughly discharges via the sampling tube.
Specifically, in order to facilitate the installation of the sampling valve 7, a connection pipe is installed at the sampling port 14, and the sampling valve 7 is connected between the connection pipe and the sampling tube 4.
As shown in FIG. 1, in one embodiment, a flow guide channel 15 communicating with the pressure reduction cavity 11 is further disposed in the pressure reduction cylinder 1, the flow guide channel 15 is located between the liquid inlet 12 and the pressure reduction cavity 11, the liquid inlet 12, the flow guide channel 15, the pressure reduction cavity 11 and the liquid outlet 13 are sequentially communicated, the inner diameter of the flow guide channel 15 and the inner diameter of the liquid inlet 12 are equal to the inner diameter of the drainage tube 2, so as to prevent polymer viscosity loss caused by reducing, and the sampling port 14 is disposed on the side wall of the flow guide channel 15. The embodiment is convenient for sampling by arranging the flow guide channel 15.
As shown in fig. 1, in an embodiment, the pressure reducing chamber 11 is a three-section chamber, the pressure reducing chamber 11 includes a first conical chamber 111, a cylindrical chamber 112 and a second conical chamber 113 sequentially arranged from the liquid inlet 12 to the liquid outlet 13 (from bottom to top), an inner diameter of the first conical chamber 111 gradually expands from the liquid inlet 12 to the cylindrical chamber 112 (from bottom to top), an inner diameter of the second conical chamber 113 gradually decreases from the cylindrical chamber 112 to the liquid outlet 13 (from bottom to top), a maximum inner diameter of the first conical chamber 111 and a maximum inner diameter of the second conical chamber 113 are equal to an inner diameter of the cylindrical chamber 112, an inner diameter of the liquid inlet 12 and a minimum inner diameter of the first conical chamber 111 are equal to an inner diameter of the draft tube 2, that is, an inner diameter of the cylindrical chamber 112 is greater than an inner diameter of the draft tube 2 and an inner diameter of the flow guiding passage 15. For example, the taper angles of the first and second conical cavities 111 and 113 are 45 °.
This embodiment sets up two conical cavities as the transition chamber through the both ends that set up at the great cylinder chamber 112 of internal diameter, can avoid polymer shearing and viscosity loss because of reducing suddenly and causing.
Further, the minimum inner diameter of second conical cavity 113 and the inner diameter of liquid discharge port 13 are both equal to the inner diameter of vent pipe 3.
As shown in fig. 1, further, the decompression cylinder 1 is a split structure to facilitate processing of the decompression chamber. Specifically, the pressure reducing cylinder 1 comprises a first cylinder body and a second cylinder body connected to the first cylinder body, the first cylinder body comprises a cylindrical section and a conical section which are connected, the second cylinder body comprises a cylindrical section and a conical section which are connected, the cylindrical section of the first cylinder body is spliced with the cylindrical section of the second cylinder body, and the cylindrical section of the first cylinder body and the cylindrical section of the second cylinder body are sealed through a sealing ring; a cylindrical cavity 112 is formed inside the cylindrical section of the first cylinder and the cylindrical section of the second cylinder; the conical section of the first cylinder is positioned below the cylindrical section, a first conical cavity 111 is formed in the conical section of the first cylinder, the liquid inlet 12 is arranged at the bottom end of the first cylinder, the flow guide channel 15 is arranged in the first cylinder, and the sampling port 14 is arranged on the side wall of the first cylinder; the conical section of the second cylinder body is positioned above the cylindrical section, a second conical cavity 1113 is formed in the conical section of the second cylinder body, and the liquid discharge port 13 is arranged at the top end of the second cylinder body.
As shown in FIG. 1, in one embodiment, the polymer solution sampling device further comprises a pressure gauge 8 for measuring the pressure in the reduced pressure cylinder 1, so as to grasp the pressure change condition in the sampling process in real time and ensure the operation safety, wherein the pressure gauge 8 is arranged outside the reduced pressure cylinder 1 and connected with the reduced pressure cylinder 1.
Specifically, be connected with a communicating pipe 9 on the outer wall of decompression section of thick bamboo 1, communicating pipe 9 and the inside intercommunication of decompression section of thick bamboo 1, manometer 8 is installed on communicating pipe 9. For example, the communicating tube 9 and the sampling tube 4 are connected to the left and right sides of the pressure reducing cylinder 1, respectively.
In one embodiment, the sampling valve 7 is a high pressure ball valve, which is effective in reducing viscosity loss compared to other types of valves.
In one embodiment, the emptying valve 6 is a high-pressure needle valve, so that the emptying speed can be effectively controlled; the control valve 5 is a high-pressure ball valve, and is convenient to operate.
As shown in fig. 1, the utility model also provides an annotate and gather well wellhead assembly, it is including the well head tubular column that is used for to injecting polymer solution into to the well, locate the test valve of well head tubular column upper end and install the aforesaid polymer solution sampling device in the test valve top, and polymer solution sampling device's drainage tube 2 is connected with test valve detachably, and the internal diameter of drainage tube 2 equals with the internal diameter of well head tubular column.
The utility model discloses a notes gather well wellhead assembly and be equipped with detachable polymer solution sampling device, after the sample is accomplished, sampling device can lift off to take a sample to other notes gather well again, solved current sampling device undetachable and sample the fixed problem in position; because the sampling device is provided with the decompression cavity 11, compared with the prior art, the shearing of the polymer solution is small; in addition, because the internal diameter of drainage tube 2 is equal to the internal diameter of well head tubular column, can avoid because of the polymer viscosity loss that the reducing caused.
In one embodiment, the drainage tube 2 is detachably connected with the test valve through slips, so that the drainage tube is very convenient to disassemble and assemble, and different polymer injection wells can be sampled.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.
Claims (10)
1. The utility model provides a polymer solution sampling device, its characterized in that, polymer solution sampling device includes that inside has the decompression chamber decompression section of thick bamboo, is used for with polymer solution drainage extremely drainage tube in the decompression chamber, be used for with the blow-down pipe of the polymer solution unloading in the decompression chamber and be used for right the sampling tube of the polymer solution sample in the decompression chamber, the internal diameter in decompression chamber is greater than the internal diameter of drainage tube, the decompression section of thick bamboo have with inlet, leakage fluid dram and the sample connection of decompression chamber intercommunication, the drainage tube with the inlet passes through the control valve and connects, the blow-down pipe with the leakage fluid dram passes through the atmospheric valve and connects, the sampling tube with the sample connection passes through the sample valve and connects.
2. The polymer solution sampling device of claim 1, wherein the drain tube is detachably connectable to a test valve at an upper end of a wellhead string of the polymer injection well, and an inner diameter of the drain tube is equal to an inner diameter of the wellhead string.
3. The polymer solution sampling device of claim 1, wherein the liquid inlet and the liquid outlet are respectively disposed at opposite ends of the reduced pressure cylinder, the reduced pressure chamber is disposed between the two ends of the reduced pressure cylinder, the sampling port is disposed on a sidewall of the reduced pressure cylinder, and the sampling port is disposed between the liquid inlet and the reduced pressure chamber.
4. The polymer solution sampling device according to claim 3, wherein a diversion channel is further disposed in the pressure reducing cylinder and is communicated with the pressure reducing cavity, the diversion channel is disposed between the liquid inlet and the pressure reducing cavity, the liquid inlet, the diversion channel, the pressure reducing cavity and the liquid outlet are sequentially communicated, the inner diameter of the diversion channel and the inner diameter of the liquid inlet are both equal to the inner diameter of the drainage tube, and the sampling port is disposed on a side wall of the diversion channel.
5. The polymer solution sampling device according to any one of claims 1 to 4, wherein the decompression chamber comprises a first conical chamber, a cylindrical chamber, and a second conical chamber arranged in this order from the liquid inlet toward the liquid outlet, the first conical chamber having an inner diameter that gradually increases from the liquid inlet toward the cylindrical chamber, the second conical chamber having an inner diameter that gradually decreases from the cylindrical chamber toward the liquid outlet, the maximum inner diameter of the first conical chamber and the maximum inner diameter of the second conical chamber both equal the inner diameter of the cylindrical chamber, and the inner diameter of the liquid inlet and the minimum inner diameter of the first conical chamber both equal the inner diameter of the draft tube.
6. The polymer solution sampling device according to any one of claims 1 to 4, further comprising a pressure gauge for measuring the pressure inside the pressure reducing cylinder, the pressure gauge being disposed outside the pressure reducing cylinder and connected to the pressure reducing cylinder.
7. The polymer solution sampling device according to any one of claims 1 to 4, wherein the sampling valve is a high pressure ball valve.
8. The polymer solution sampling device according to any one of claims 1 to 4, wherein the vent valve is a high pressure needle type valve and the control valve is a high pressure ball valve.
9. A polymer injection well wellhead assembly, characterized in that the polymer injection well wellhead assembly comprises a wellhead string for injecting a polymer solution into a well, a test valve provided at an upper end of the wellhead string, and the polymer solution sampling device of any one of claims 1 to 8 mounted above the test valve, wherein a drainage tube of the polymer solution sampling device is detachably connected to the test valve, and an inner diameter of the drainage tube is equal to an inner diameter of the wellhead string.
10. The polymer injection well wellhead assembly of claim 9, wherein the draft tube is removably connected to the test valve by slips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773871.1U CN211652204U (en) | 2019-10-22 | 2019-10-22 | Polymer solution sampling device and polymer injection well wellhead assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773871.1U CN211652204U (en) | 2019-10-22 | 2019-10-22 | Polymer solution sampling device and polymer injection well wellhead assembly |
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| Publication Number | Publication Date |
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| CN211652204U true CN211652204U (en) | 2020-10-09 |
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| CN201921773871.1U Active CN211652204U (en) | 2019-10-22 | 2019-10-22 | Polymer solution sampling device and polymer injection well wellhead assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136702A (en) * | 2021-11-04 | 2022-03-04 | 河南恒聚新能源设备有限公司 | High-pressure sampler for sampling polymer solution and use method thereof |
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2019
- 2019-10-22 CN CN201921773871.1U patent/CN211652204U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136702A (en) * | 2021-11-04 | 2022-03-04 | 河南恒聚新能源设备有限公司 | High-pressure sampler for sampling polymer solution and use method thereof |
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