CN112781861A - Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method - Google Patents
Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method Download PDFInfo
- Publication number
- CN112781861A CN112781861A CN202110087433.5A CN202110087433A CN112781861A CN 112781861 A CN112781861 A CN 112781861A CN 202110087433 A CN202110087433 A CN 202110087433A CN 112781861 A CN112781861 A CN 112781861A
- Authority
- CN
- China
- Prior art keywords
- gas
- liquid
- valve
- throttling
- tested
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a device and an experimental method for testing the throttling characteristic of gas-liquid two-phase flow of a wellhead throttling valve, wherein the device comprises a water tank, a plunger pump, a back pressure valve, a check valve, a gas-liquid mixing pipeline and a circulating pipeline which is formed by the throttling valve to be tested in sequence; a first pressure sensor is arranged between the water tank and the throttle valve to be tested; a second pressure sensor is arranged between the gas-liquid mixing pipeline and the throttle valve to be tested; a liquid flow sensor is arranged between the check valve and the back pressure valve; a gas flow sensor is arranged between the check valve and the gas-liquid mixing pipeline; the gas flow sensor is also sequentially connected with a gas pressure regulating valve and an air compressor; the sensor respectively transmits wireless signals to the data acquisition box and the computer for data processing and storage. The invention realizes the throttle characteristic test of the gas phase flow, the liquid phase flow and the gas-liquid two-phase flow, and people can recognize the throttle characteristic of the throttle valve under the gas-liquid two-phase flow condition through experiments.
Description
Technical Field
The invention relates to the technical field of petroleum drilling, in particular to a device and an experimental method for testing the throttling characteristic of gas-liquid two-phase flow of a wellhead throttling valve.
Background
In the drilling operation, when the drill encounters a production layer and gas invasion or overflow occurs, the opening of a wellhead throttling valve needs to be adjusted to apply wellhead back pressure so as to inhibit the gas invasion or overflow. Therefore, accurate recognition of the throttling characteristic of the throttling valve in gas-liquid two-phase flow is a precondition for realizing rapid and safe control of wellhead pressure.
At present, a throttle characteristic testing device of a throttle valve mainly takes single-phase airflow, single-phase liquid flow, gas-solid two-phase flow and liquid-solid two-phase flow, and no related experimental device can test the throttle characteristic of the throttle valve under the condition of gas-liquid two-phase flow. Muir rock develops a throttle valve flow testing device and applies for invention patent (CN109374289A), and can realize the corresponding relation of fast defining throttle valve sheet opening and air-fuel ratio. However, the patent can only test the gas-phase throttling performance of the throttling valve, and cannot meet the requirement of testing the gas-liquid two-phase throttling performance of the throttling valve on site.
Disclosure of Invention
The invention aims to provide a device and an experimental method for testing the throttling characteristic of a gas-liquid two-phase flow of a wellhead throttling valve, and the device and the experimental method are used for researching the throttling characteristic of the throttling valve under the condition of the gas-liquid two-phase flow.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a device for testing the throttling characteristic of a gas-liquid two-phase flow of a wellhead throttling valve comprises a water tank, a plunger pump, a back pressure valve, a check valve, a gas-liquid mixing pipeline and a circulating pipeline which is sequentially formed by a throttling valve to be tested;
a first pressure sensor is arranged between the water tank and the throttle valve to be tested;
a second pressure sensor is arranged between the gas-liquid mixing pipeline and the throttle valve to be tested;
a liquid flow sensor is arranged between the check valve and the back pressure valve;
a gas flow sensor is arranged between the check valve and the gas-liquid mixing pipeline; the gas flow sensor is also sequentially connected with a gas pressure regulating valve and an air compressor;
the first pressure sensor, the second pressure sensor, the liquid flow sensor and the gas flow sensor are respectively transmitted into the data acquisition box and the computer through wireless signals to perform data processing and storage.
The gas-liquid mixing pipeline comprises an outer pipe, and helical blades are arranged inside the outer pipe. The materials are all stainless steel materials and are connected with other pipelines by flanges.
The water tank is open-air water tank, and the pipeline connection plunger pump of water tank bottom, the pipeline connection examination choke valve that awaits measuring at the water tank top. The back pressure valve is connected between the plunger pump and the liquid flowmeter and used for stabilizing the flow and the pressure of the plunger pump.
And the liquid-phase experimental working medium is pumped into the circulating pipeline through the plunger pump, is measured by the liquid flowmeter and the second pressure sensor, enters the gas-liquid mixing pipeline, is fully mixed with the gas experimental working medium, and then enters the throttle valve to be tested. And the water flows back to the water tank after flowing out of the throttle valve to be tested and being measured by the first pressure sensor.
And the gas-phase experimental working medium enters the circulating pipeline through the air inlet pipeline. And after the measurement is carried out by a second pressure sensor in the circulating pipeline, the flow enters a throttle valve to be tested. And discharging the water from the water tank to the atmosphere after flowing out of the throttle valve to be tested.
The liquid flowmeter should be installed between check valve and back pressure valve, and the inlet line should be installed between check valve and gas-liquid mixture pipeline, prevents that gaseous working medium from disturbing liquid flowmeter's measurement.
In the experiment, the opening of the throttle valve to be tested is adjusted by an opening adjusting device of the throttle valve. The flow of the liquid phase experiment working medium is regulated by the plunger pump and enters the circulating pipeline through the plunger pump. The flow of the working medium in the gas phase experiment is regulated by a gas pressure regulating valve and enters the circulating pipeline under the action of an air compressor. The gas content and the total flow can be calculated through the flow of the liquid phase experimental working medium measured by the liquid flowmeter and the flow of the gas phase experimental working medium measured by the gas flowmeter. The throttle pressure drop of the throttle valve can be obtained by the throttle inlet pressure measured by the second pressure sensor and the throttle outlet pressure measured by the first pressure sensor.
The invention also discloses an experimental method using the device for testing the gas-liquid two-phase flow throttling characteristic of the wellhead throttling valve, which comprises the following steps: a throttle valve gas phase throttling characteristic experiment, a throttle valve liquid phase throttling characteristic experiment and a throttle valve gas-liquid two-phase flow throttling characteristic experiment;
when a gas phase throttling characteristic experiment of the throttling valve is carried out, firstly, the throttling valve to be tested is adjusted to a certain opening degree, and the plunger pump and the check valve are closed; starting an air compressor, and regulating the gas flow through a gas pressure regulating valve and the air compressor; the gas experimental working medium enters the water tank to be discharged after passing through the second pressure sensor, the throttle valve to be tested and the first pressure sensor; in the experiment, the inlet pressure of the throttle valve to be tested is measured through the second pressure sensor, the outlet pressure of the throttle valve to be tested is measured through the first pressure sensor, and the gas flow is measured through the gas flow sensor.
When a liquid phase throttling characteristic experiment of the throttling valve is carried out, firstly, the throttling valve to be tested is adjusted to a certain opening degree, a plunger pump is started, an experiment working medium is drawn out from a water tank, and the liquid experiment working medium flows back to the water tank after passing through a liquid flow sensor, a back pressure valve, a check valve, a second pressure sensor, a gas-liquid mixing pipeline, the throttling valve to be tested and a first pressure sensor; in the experiment, the inlet pressure of the throttle valve to be tested is measured through the second pressure sensor, the outlet pressure of the throttle valve to be tested is measured through the first pressure sensor, and the liquid flow is measured through the liquid flow sensor.
When a gas-liquid two-phase throttling characteristic experiment of the throttling valve is carried out, firstly, the throttling valve to be tested is adjusted to a certain opening degree, a plunger pump is started, and an experimental working medium is pumped out from a water tank; then, starting an air compressor, and regulating the air flow through an air pressure regulating valve and the air compressor; the gas experimental working medium enters the water tank to be discharged after passing through the second pressure sensor, the gas-liquid mixing pipeline, the throttle valve to be tested and the first pressure sensor; the liquid experimental working medium flows back to the water tank after passing through the liquid flow sensor, the back pressure valve, the check valve, the second pressure sensor, the gas-liquid mixing pipeline, the throttle valve to be tested and the first pressure sensor; in the experiment, the inlet pressure of the throttle valve to be tested is measured by the second pressure sensor, the outlet pressure of the throttle valve to be tested is measured by the first pressure sensor, and the liquid flow is measured by the liquid flow sensor; the gas content can be obtained by the gas flow measured by the gas flow sensor and the liquid flow measured by the liquid flow sensor.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention realizes the throttle characteristic test of the gas phase flow, the liquid phase flow and the gas-liquid two-phase flow, and people can recognize the throttle characteristic of the throttle valve under the gas-liquid two-phase flow condition through experiments. By changing the flow of the air compressor, the flow of the plunger pump and the opening of the throttle valve, the throttle characteristic curves of the throttle valve under different gas contents and different flows can be explored, and a theoretical basis is provided for pressure-controlled drilling process optimization in petroleum engineering.
Drawings
FIG. 1 is a flow chart of an experimental setup according to an embodiment of the present invention;
fig. 2 is a schematic view of a gas-liquid mixing pipeline structure.
Detailed Description
In order to make the objects and embodiments of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the device for testing the gas-liquid two-phase flow throttling characteristic of the wellhead throttling valve comprises a circulating pipeline which is formed by a water tank 1, a plunger pump 2, a back pressure valve 3, a check valve 4, a gas-liquid mixing pipeline 5 and a throttling valve 6 to be tested in sequence;
a first pressure sensor A1 is arranged between the water tank 1 and the throttle valve 6 to be tested;
a second pressure sensor A2 is arranged between the gas-liquid mixing pipeline 5 and the throttle valve 6 to be tested;
a liquid flow sensor B2 is arranged between the check valve 4 and the back pressure valve 3;
a gas flow sensor B1 is arranged between the check valve 4 and the gas-liquid mixing pipeline 5; the gas flow sensor B1 is also sequentially connected with a gas pressure regulating valve 7 and an air compressor 8;
the first pressure sensor A1, the second pressure sensor A2, the liquid flow sensor B2 and the gas flow sensor B1 are respectively transmitted to the data acquisition box 9 and the computer 10 through wireless signals for data processing and storage.
The gas-liquid mixing pipeline 5 comprises an outer pipe 5-1, and helical blades 5-2 are arranged inside the outer pipe 5-1.
The experimental method for the device for testing the throttling characteristic of the gas-liquid two-phase flow of the wellhead throttling valve comprises the following steps: the method comprises a throttle valve gas-phase throttling characteristic experiment, a throttle valve liquid-phase throttling characteristic experiment and a throttle valve gas-liquid two-phase flow throttling characteristic experiment.
When a gas phase throttling characteristic experiment of the throttling valve is carried out, firstly, the throttling valve 6 to be tested is adjusted to a certain opening degree, and the plunger pump 2 and the check valve 4 are closed; starting an air compressor 8, and regulating the air flow through an air pressure regulating valve 7 and the air compressor 8; the gas experimental working medium enters the water tank 1 and is discharged after passing through the second pressure sensor A2, the throttle valve 6 to be tested and the first pressure sensor A1; in the experiment, the inlet pressure of the throttle valve 6 to be tested is measured by the second pressure sensor A2, the outlet pressure of the throttle valve 6 to be tested is measured by the first pressure sensor A1, and the gas flow is measured by the gas flow sensor B1.
When a throttle valve liquid phase throttling characteristic experiment is carried out, firstly, the throttle valve 6 to be tested is adjusted to a certain opening degree, the plunger pump 2 is started, an experiment working medium is drawn out from the water tank 1, and the liquid experiment working medium flows back to the water tank 1 after passing through the liquid flow sensor B2, the back pressure valve 3, the check valve 4, the second pressure sensor A2, the gas-liquid mixing pipeline 5, the throttle valve 6 to be tested and the first pressure sensor A1; in the experiment, the inlet pressure of the throttle valve 6 to be tested is measured by the second pressure sensor A2, the outlet pressure of the throttle valve 6 to be tested is measured by the first pressure sensor A1, and the liquid flow is measured by the liquid flow sensor B2.
When a throttle valve gas-liquid two-phase throttling characteristic experiment is carried out, firstly, the throttle valve 6 to be tested is adjusted to a certain opening degree, the plunger pump 2 is started, and an experimental working medium is pumped out from the water tank 1; then, the air compressor 8 is started, and the air flow is adjusted through the air pressure adjusting valve 7 and the air compressor 8; the gas experimental working medium enters the water tank 1 and is discharged after passing through the second pressure sensor A2, the gas-liquid mixing pipeline 5, the throttle valve 6 to be tested and the first pressure sensor A1; the liquid experimental working medium flows back to the water tank 1 after passing through a liquid flow sensor B2, a back pressure valve 3, a check valve 4, a second pressure sensor A2, a gas-liquid mixing pipeline 5, a throttle valve 6 to be tested and a first pressure sensor A1; in the experiment, the inlet pressure of the throttle valve 6 to be tested is measured by the second pressure sensor A2, the outlet pressure of the throttle valve 6 to be tested is measured by the first pressure sensor A1, and the liquid flow is measured by the liquid flow sensor B2; the gas void fraction can be found by the gas flow rate measured by the gas flow sensor B1 and the liquid flow rate measured by the liquid flow sensor B2.
The invention has the following advantages:
the experiment system can be used for the experiment of the throttling characteristics of gas single-phase flow and liquid single-phase flow of the throttling valve, can also be used for the experiment of the throttling characteristics of gas-liquid two-phase flow of the throttling valve, and can simultaneously simulate the throttling characteristics of the wellhead throttling valve under the working conditions of overflow, overflow and leakage simultaneous storage, gas invasion and the like.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner in which the invention is practiced, and it is to be understood that the scope of the invention is not limited to such specifically recited statements and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (6)
1. A wellhead choke valve gas-liquid two-phase flow throttling characteristic testing device is characterized in that: the device comprises a circulating pipeline consisting of a water tank (1), a plunger pump (2), a back pressure valve (3), a check valve (4), a gas-liquid mixing pipeline (5) and a throttle valve (6) to be tested in sequence;
a first pressure sensor (A1) is arranged between the water tank (1) and the throttle valve (6) to be tested;
a second pressure sensor (A2) is arranged between the gas-liquid mixing pipeline (5) and the throttle valve (6) to be tested;
a liquid flow sensor (B2) is arranged between the check valve (4) and the back pressure valve (3);
a gas flow sensor (B1) is arranged between the check valve (4) and the gas-liquid mixing pipeline (5); the gas flow sensor (B1) is also sequentially connected with a gas pressure regulating valve (7) and an air compressor (8);
the first pressure sensor (A1), the second pressure sensor (A2), the liquid flow sensor (B2) and the gas flow sensor (B1) are respectively transmitted into the data acquisition box (9) and the computer (10) through wireless signals to carry out data processing and storage.
2. The device for testing the throttling characteristic of the gas-liquid two-phase flow of the wellhead throttling valve according to claim 1, characterized in that: the gas-liquid mixing pipeline (5) comprises an outer pipe (5-1), and helical blades (5-2) are arranged inside the outer pipe (5-1).
3. The experimental method for the throttle characteristic testing device of the gas-liquid two-phase flow of the wellhead throttle valve according to claim 1 or 2, is characterized by comprising the following steps: the method comprises a throttle valve gas-phase throttling characteristic experiment, a throttle valve liquid-phase throttling characteristic experiment and a throttle valve gas-liquid two-phase flow throttling characteristic experiment.
4. The experimental method of a gas-liquid two-phase flow throttling characteristic testing device of a wellhead throttling valve according to claim 3, characterized in that when a throttling valve gas-phase throttling characteristic experiment is carried out, firstly, the throttling valve (6) to be tested is adjusted to a certain opening degree, and the plunger pump (2) and the check valve (4) are closed; starting an air compressor (8), and regulating the gas flow through a gas pressure regulating valve (7) and the air compressor (8); the gas experimental working medium enters the water tank (1) to be discharged after passing through the second pressure sensor (A2), the throttle valve (6) to be tested and the first pressure sensor (A1); in the experiment, the inlet pressure of the throttle valve (6) to be tested is measured by the second pressure sensor (A2), the outlet pressure of the throttle valve (6) to be tested is measured by the first pressure sensor (A1), and the gas flow is measured by the gas flow sensor (B1).
5. The experimental method of the throttle characteristic test device of the wellhead throttle valve gas-liquid two-phase flow is characterized in that when a throttle valve liquid-phase throttle characteristic experiment is carried out, firstly, the throttle valve (6) to be tested is adjusted to a certain opening degree, the plunger pump (2) is started, an experimental working medium is drawn out from the water tank (1), and the experimental working medium flows back to the water tank (1) after passing through the liquid flow sensor (B2), the back pressure valve (3), the check valve (4), the second pressure sensor (A2), the gas-liquid mixing pipeline (5), the throttle valve (6) to be tested and the first pressure sensor (A1); in the experiment, the inlet pressure of the throttle valve (6) to be tested is measured by the second pressure sensor (A2), the outlet pressure of the throttle valve (6) to be tested is measured by the first pressure sensor (A1), and the liquid flow is measured by the liquid flow sensor (B2).
6. The experimental method of the device for testing the throttling characteristics of the gas-liquid two-phase flow of the wellhead throttling valve according to claim 3, characterized in that when the device for testing the throttling characteristics of the gas-liquid two-phase flow of the throttling valve is used, firstly, the throttling valve (6) to be tested is adjusted to a certain opening degree, the plunger pump (2) is started, and the experimental working medium is drawn out of the water tank (1); then, an air compressor (8) is started, and the gas flow is regulated through a gas pressure regulating valve (7) and the air compressor (8); the gas experimental working medium enters the water tank (1) to be discharged after passing through the second pressure sensor (A2), the gas-liquid mixing pipeline (5), the throttle valve (6) to be tested and the first pressure sensor (A1); liquid experimental working media flow back to the water tank (1) after passing through a liquid flow sensor (B2), a back pressure valve (3), a check valve (4), a second pressure sensor (A2), a gas-liquid mixing pipeline (5), a throttle valve (6) to be tested and a first pressure sensor (A1); in the experiment, the inlet pressure of the throttle valve (6) to be tested is measured by a second pressure sensor (A2), the outlet pressure of the throttle valve (6) to be tested is measured by a first pressure sensor (A1), and the liquid flow is measured by a liquid flow sensor (B2); the gas void fraction can be obtained by the gas flow rate measured by the gas flow rate sensor (B1) and the liquid flow rate measured by the liquid flow rate sensor (B2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110087433.5A CN112781861A (en) | 2021-01-22 | 2021-01-22 | Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110087433.5A CN112781861A (en) | 2021-01-22 | 2021-01-22 | Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112781861A true CN112781861A (en) | 2021-05-11 |
Family
ID=75758478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110087433.5A Pending CN112781861A (en) | 2021-01-22 | 2021-01-22 | Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112781861A (en) |
-
2021
- 2021-01-22 CN CN202110087433.5A patent/CN112781861A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106884635B (en) | Low and ultra-low permeability reservoir CO2Method for measuring minimum flooding miscible pressure | |
| CN102169112B (en) | Device and method for research of low-dosage inhibitor of natural gas hydrate | |
| CN108344853B (en) | Method for testing absolute unobstructed flow of straight well in planar heterogeneous constant-volume dry gas reservoir | |
| US20220401899A1 (en) | Methods and systems for in-line mixing of hydrocarbon liquids | |
| CN103344539A (en) | Long-term multi-field coupling test device and method for seepage pressure and phase component proportion-controllable rock | |
| CN109596457B (en) | Pipe flow evaluation method of foaming agent for drainage and gas production | |
| CN103900755B (en) | A kind of application CT measures the apparatus and method of oil gas minimum miscibility pressure | |
| CN103983533A (en) | Test device and test method for crack evolution and seepage characteristic of gas-containing shale | |
| CN113533676A (en) | Laboratory simulation method for determining generation efficiency of natural gas hydrate in deep sea bottom | |
| CN102749197A (en) | Experiment device for hydraulic turbine applied to gas-liquid two-phase medium | |
| CN205826624U (en) | A kind of long cores hydrocarbon gas drives experimental provision | |
| CN108267391A (en) | A kind of experimental provision and method of the evaluation of machine-pumped oil well underground gas-tight tool | |
| CN213874948U (en) | Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device | |
| CN112781861A (en) | Wellhead throttling valve gas-liquid two-phase flow throttling characteristic testing device and experimental method | |
| CN204458305U (en) | A kind of detection facility of Double-liquid mud-injection pump | |
| CN110865010B (en) | Multi-gas seepage testing device and testing method under rock rheological loading condition | |
| CN111058822B (en) | Liquid CO2/N2Two-phase system dry fracturing fluid sand adding system and method | |
| Jianzhong et al. | An improved experimental procedure and mathematical model for determining gas-water relative permeability in tight sandstone gas reservoirs | |
| CN105841775B (en) | A kind of water-producing gas well hydrops anticipation experimental provision and method | |
| US11085259B2 (en) | Systems and processes for improved drag reduction estimation and measurement | |
| CN111720111B (en) | Production simulation device and method for water and gas producing well based on fixed-yield production | |
| CN211785431U (en) | Drag reducer evaluation instrument for convenient slickwater fracturing | |
| US11898094B2 (en) | Systems and processes for improved drag reduction estimation and measurement | |
| CN204789224U (en) | Anhydrous fracturing fluid of carbon dioxide rubs and hinders testing arrangement | |
| CN216206615U (en) | Visual high pressure oil-gas mixture transportation experimental apparatus of wax deposit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiao Dong Inventor after: Xiang Min Inventor after: Hu Yifan Inventor after: Xu Jiaxin Inventor after: Li Gao Inventor after: Tang Gui Inventor after: Meng Yingfeng Inventor after: Xu Zhikai Inventor after: Liu Dianchen Inventor after: Li Yongjie Inventor after: Li Hongtao Inventor before: Xiao Dong Inventor before: Wan Min Inventor before: Hu Yifan Inventor before: Xu Jiaxin Inventor before: Li Gao Inventor before: Tang Gui Inventor before: Meng Yingfeng Inventor before: Xu Zhikai Inventor before: Liu Dianchen Inventor before: Li Yongjie Inventor before: Li Hongtao |