CN113251232A - Gas storage wellhead throttling device - Google Patents
Gas storage wellhead throttling device Download PDFInfo
- Publication number
- CN113251232A CN113251232A CN202110723147.3A CN202110723147A CN113251232A CN 113251232 A CN113251232 A CN 113251232A CN 202110723147 A CN202110723147 A CN 202110723147A CN 113251232 A CN113251232 A CN 113251232A
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- Prior art keywords
- gas storage
- fixed
- wellhead
- gas
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/70—Cooling of pipes or pipe systems
- F16L53/75—Cooling of pipes or pipe systems using cooling fins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
- F16T1/48—Monitoring arrangements for inspecting, e.g. flow of steam and steam condensate
Abstract
The invention discloses a gas storage wellhead throttling device, relates to the technical field of oil gas storage and transportation, and comprises a flange plate fixed at a gas storage wellhead, wherein the top of the flange plate is fixedly connected with a fixed pipe a, the outer side wall of the fixed pipe a is fixedly sleeved with a fixed cylinder with a sealed lower end, and a containing bin is arranged between the inner side wall of the fixed cylinder and the fixed pipe a. According to the invention, the finned heat exchanger is arranged in the connecting cylinder, and is used for cooling high-temperature and high-pressure gas, so that the effect of cooling the gas is achieved, meanwhile, heat in the gas can be conveyed into the arc-shaped container, the arc-shaped container can be arranged on a wellhead pipeline and is used for heating a wellhead, substances such as alcohol and the like do not need to be injected into the wellhead for anti-freezing and anti-blocking, the operation cost is reduced, and the problems that in the prior art, the heat in the gas output by the gas storage warehouse is not utilized, and the operation cost needs to be increased for anti-freezing and anti-blocking treatment of the wellhead are solved.
Description
Technical Field
The invention relates to the technical field of oil and gas storage and transportation, in particular to a wellhead throttling device for a gas storage reservoir.
Background
The gas storage well depends on higher formation pressure for gas production by self-injection, because the formation pressure is higher, the well mouth is generally provided with an air nozzle, and the pressure is reduced by controlling the flow so as to meet the requirements of dew point treatment and external transportation. However, the air tap throttling mode only plays a role in reducing pressure, the energy utilization rate is low, if the kinetic energy of air flow is not utilized, the heat energy generated after throttling is not utilized, and substances such as alcohol and the like need to be injected into a wellhead to prevent freezing and blocking, so that the operating cost is increased.
Through retrieval, the Chinese patent No. CN105507856B discloses a gas storage wellhead throttling device, which comprises an inlet device, a conical screw, a transmission device, a driven shaft, a generator, a separation bin, a water ring surface, an oil ring surface, a gas area, a liquid discharge device and an exhaust device, wherein gas stored in the gas storage is sent into a screw expander to push the conical screw to rotate, the energy stored in the gas is converted into the kinetic energy of the conical screw, the temperature and the pressure of the gas are continuously reduced, and the better throttling is realized. In addition, the gas is pushed to push the conical screw to rotate, and meanwhile, the conical screw drives the generator to generate electricity. And then, the high-temperature high-pressure gas pushes the conical screw to rotate, the temperature and the pressure are continuously reduced, oil and water condensed in the high-temperature high-pressure gas are gradually separated out, and when the oil and water flow out of the conical screw and enter the separation bin, oil and gas separation is realized under the action of high-speed rotation and gravity.
The device does not utilize the heat energy of gas, has only reached and has carried out the effect that steps down and cool down to the air current, still need to annotate material such as mellow wine at the well head and prevent to freeze stifled, increases the working costs.
To this end, we propose a gas reservoir wellhead choke to solve the above problems.
Disclosure of Invention
The invention provides a gas storage wellhead throttling device, which solves the technical problems in the background technology.
In order to solve the technical problem, the gas storage wellhead throttling device provided by the invention comprises a flange plate fixed on a gas storage wellhead, wherein the top of the flange plate is fixedly connected with a fixed tube a, the outer side wall of the fixed tube a is fixedly sleeved with a fixed cylinder with a sealed lower end, a containing bin is arranged between the inner side wall of the fixed cylinder and the fixed tube a, the side wall of the fixed cylinder is provided with a discharging device, the top of the fixed cylinder is connected with a fixed tube b through a connecting cylinder, the inner side wall of the connecting cylinder is fixedly connected with a fin heat exchanger, the output end of the fin heat exchanger is connected with an arc container through a liquid inlet tube, the output end of the arc container is connected with the input end of the fin heat exchanger through a liquid conveying tube, the liquid conveying tube is provided with a water pump, and the fixed tube b is provided with a pressure reducing device.
Preferably, the discharging device comprises a discharging pipe fixedly connected to the outer side wall of the bottom of the fixed cylinder, a fixed flange is installed on the outer side wall of one end, far away from the fixed cylinder, of the discharging pipe, and a control valve is installed on the discharging pipe.
Preferably, a liquid level sensor is installed on the inner side wall of the bottom of the fixed cylinder and is located in the containing bin.
Preferably, the number of the liquid level sensors is two, and the liquid level sensors are arranged in an upper row and a lower row.
Preferably, the fin heat exchanger is a cylindrical fin heat exchanger, and the fin heat exchanger is arranged in a round table shape.
Preferably, the connecting cylinder is composed of two half connecting cylinders arranged in a circular truncated cone shape.
Preferably, the pressure reducing means comprises a screw expander installed in the fixed pipe b.
Preferably, the output shaft of the screw expander is connected with a transmission shaft through a gear transmission box, and the two ends of the transmission shaft are provided with generators.
Compared with the related art, the gas storage wellhead throttling device provided by the invention has the following beneficial effects:
1. the invention provides a gas storage wellhead throttling device, which is characterized in that a finned heat exchanger is arranged in a connecting cylinder, and is used for cooling high-temperature and high-pressure gas, so that the effect of cooling the gas is achieved, meanwhile, heat in the gas can be conveyed into an arc container, the arc container can be arranged on a wellhead pipeline and is used for heating a wellhead, substances such as alcohol and the like do not need to be injected into the wellhead to prevent freezing and blocking, the operation cost is reduced, and the problems that in the prior art, the heat in the gas output by a gas storage is not utilized, and the operation cost needs to be increased to perform freezing and blocking prevention treatment on the wellhead are solved.
2. The invention provides a wellhead throttling device of an air reservoir, which is characterized in that a fixed cylinder is sleeved on the outer side wall of the fixed pipe a, a containing bin is formed between the fixed pipe a and the fixed cylinder and used for containing an oil-water mixture, a liquid level sensor is arranged in the containing bin, when the liquid level in the containing bin exceeds a threshold value, a control valve is opened, the oil-water mixture in the containing bin is discharged, and when the liquid level in the containing bin is lower than the threshold value, the control valve is closed. The purpose is conveniently clear up the inside oil water mixture of the device, can also avoid gaseous discharge through the discharge pipe simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of a gas storage wellhead throttling device;
FIG. 2 is a top view of a gas storage wellhead throttling device;
FIG. 3 is a schematic right view of a gas storage wellhead choke;
FIG. 4 is a cross-sectional view of a gas storage wellhead choke;
fig. 5 is a schematic view of the structure at a in fig. 4.
Reference numbers in the figures: 1. a flange plate; 2. a fixed pipe a; 3. a fixed cylinder; 4. a connecting cylinder; 5. a fixed tube b; 6. an arc-shaped container; 7. a liquid inlet pipe; 8. a transfusion tube; 9. a water pump; 10. a discharge pipe; 11. a control valve; 12. a drive shaft; 13. a generator; 14. a screw expander; 15. a gear transmission case; 16. a containing bin; 17. a finned heat exchanger; 18. a liquid level sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The gas storage wellhead throttling device is provided by figures 1-5, including being used for fixing flange plate 1 at the gas storage wellhead, flange plate 1's top fixedly connected with fixed pipe a2, the fixed cylinder 3 that the lower extreme is sealed has been cup jointed to the lateral wall of fixed pipe a2, be provided with between the inside wall of fixed cylinder 3 and fixed pipe a2 and hold storehouse 16, be provided with eduction gear on the lateral wall of fixed cylinder 3, the top of fixed cylinder 3 is connected with fixed pipe b5 through connecting cylinder 4, the inside wall fixedly connected with fin heat exchanger 17 of connecting cylinder 4, fin heat exchanger 17's output is connected with arc container 6 through feed liquor pipe 7, arc container 6's output passes through the transfer line 8 and is connected with fin heat exchanger 17's input, install water pump 9 on the transfer line 8, install pressure reduction means on the fixed pipe b 5.
The storage bin 16 is used for storing the oil-water mixture.
6 concatenations of two arc containers can constitute a ring for the parcel is on well head pipeline's lateral wall, so that prevent to freeze stifled the processing to well head pipeline.
The discharging device comprises a discharging pipe 10 fixedly connected to the outer side wall of the bottom of the fixed cylinder 3, a fixed flange is installed on the outer side wall of one end, far away from the fixed cylinder 3, of the discharging pipe 10, and a control valve 11 is installed on the discharging pipe 10.
The fin heat exchanger 17 is a cylindrical fin heat exchanger, and the fin heat exchanger 17 is arranged in a circular truncated cone shape.
The finned heat exchanger 17 is a cylindrical finned heat exchanger, and aims to not influence the normal circulation of gas and reduce the impact force of high-temperature and high-pressure gas on the finned heat exchanger 17, and in addition, the high-temperature and high-pressure gas enters a fixed pipe b5 through a fixed pipe a2, and oil-water mixtures attached to the finned heat exchanger 17 can be flushed away, so that the oil-water mixtures flow into the containing bin 16 along the side walls of the connecting cylinder 4 and the fixed cylinder 3, and are conveniently discharged through the discharge pipe 10.
The effect of water pump 9 is in being convenient for carry the coolant liquid in the arc container 6 to fin heat exchanger 17 in, carry the gaseous thermal coolant liquid in fin heat exchanger 17 and carry in the arc container 6 to heat the well head pipeline, avoid the well head to appear freezing stifled.
It should be noted that the liquid inlet pipe 7 is a copper pipe, and can dissipate certain heat in the transmission process, so as to ensure that the temperature in the arc-shaped container 6 is at a safe temperature and avoid affecting the safety performance of a wellhead pipeline.
The connecting cylinder 4 is composed of two half connecting cylinders arranged in a circular truncated cone shape.
The purpose is to increase the diameter of the connecting cylinder 4 and avoid the decrease of the flow area of the gas caused by the installation of the finned heat exchanger 17 inside the connecting cylinder 4, thereby increasing the gas pressure of the gas.
The pressure reducing means includes a screw expander 14 installed in a fixed pipe b 5.
An output shaft of the screw expander 14 is connected with a transmission shaft 12 through a gear transmission case 15, and both ends of the transmission shaft 12 are provided with generators 13.
The gas is subjected to pressure reduction and temperature reduction through the screw expander 14, the gas stored in the gas storage is sent into the screw expander 14 to push the conical screw to rotate, the energy stored in the gas storage is converted into the kinetic energy of the conical screw, the temperature and the pressure of the gas are continuously reduced, and better throttling is realized. In addition, the gas pushes the conical screw to rotate, and simultaneously, the conical screw drives the generator 13 to generate electricity. Furthermore, high temperature high pressure gas promotes the conical screw and rotates, and temperature and pressure constantly reduce, and the profit of condensing in high temperature high pressure gas is separated out gradually, is got rid of on the inside wall of fixed pipe b5, and the profit mixture enters into along fixed pipe b5, connecting cylinder 4 and fixed cylinder 3 and holds the storehouse 16 in.
Example two
On the basis of the first embodiment, a liquid level sensor 18 is installed on the inner side wall of the bottom of the fixed cylinder 3, and the liquid level sensor 18 is positioned in the containing bin 16.
The level sensors 18 are two in number and are arranged in an upper-lower array.
Utilize the solid fixed cylinder 3 to cup joint on the lateral wall of solid fixed tube a2 for form between solid fixed tube a2 and the solid fixed cylinder 3 and hold storehouse 16, be used for holding the oil water mixture, and install level sensor 18 in holding storehouse 16, when holding the inside liquid level in storehouse 16 and surpassing the threshold value, control valve 11 opens, holds the oil water mixture in the storehouse 16 and passes through discharge pipe 10 and discharge, when holding the inside liquid level in storehouse 16 and be less than the threshold value, control valve 11 closes. The purpose is to facilitate cleaning of the oil-water mixture inside the device, while also avoiding gas discharge through the discharge pipe 10.
The working principle is as follows:
gas in the gas receiver at first enters into connecting cylinder 4 through fixed pipe a2 and solid fixed cylinder 3 in, install finned heat exchanger 17 in the connecting cylinder 4 and absorb the heat in the high temperature high-pressure gas, the coolant liquid that carries gaseous heat enters into arc container 6, be used for carrying out anti-freezing stifled processing to the well head pipeline, and the coolant liquid in the arc container 6 passes through water pump 9 and carries finned heat exchanger 17, so that follow-up high temperature high-pressure gas that enters into in the connecting cylinder 4 cools down, and high pressure high-temperature gas after the cooling sends into screw expander 14, promote conical screw and rotate, the energy conversion that self contains is conical screw's kinetic energy, gas temperature and pressure constantly reduce, realize better throttle. In addition, the gas pushes the conical screw to rotate, and simultaneously, the conical screw drives the generator 13 to generate electricity. Furthermore, high temperature high pressure gas promotes the conical screw and rotates, and temperature and pressure constantly reduce, and the profit of condensing in high temperature high pressure gas is separated out gradually, is got rid of on the inside wall of fixed pipe b5, and the profit mixture enters into along fixed pipe b5, connecting cylinder 4 and fixed cylinder 3 and holds the storehouse 16 in. When the liquid level inside the containing bin 16 exceeds the threshold value, the control valve 11 is opened, the oil-water mixture inside the containing bin 16 is discharged through the discharge pipe 10, and when the liquid level inside the containing bin 16 is lower than the threshold value, the control valve 11 is closed. The purpose is to facilitate cleaning of the oil-water mixture inside the device, while also avoiding gas discharge through the discharge pipe 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Gas storage storehouse well head throttling arrangement, including being used for fixing ring flange (1) at the gas storage storehouse well head, its characterized in that: the top of the flange plate (1) is fixedly connected with a fixed pipe a (2), the outer side wall of the fixed pipe a (2) is fixedly sleeved with a fixed cylinder (3) with the lower end sealed, a holding bin (16) is arranged between the inner side wall of the fixed cylinder (3) and the fixed pipe a (2), the side wall of the fixed cylinder (3) is provided with a discharge device, the top of the fixed cylinder (3) is connected with a fixed pipe b (5) through a connecting cylinder (4), the inner side wall of the connecting cylinder (4) is fixedly connected with a finned heat exchanger (17), the output end of the fin heat exchanger (17) is connected with an arc-shaped container (6) through a liquid inlet pipe (7), the output end of the arc-shaped container (6) is connected with the input end of the fin heat exchanger (17) through a liquid conveying pipe (8), a water pump (9) is installed on the infusion tube (8), and a pressure reduction device is installed on the fixed tube b (5).
2. The gas storage wellhead throttling device according to claim 1, characterized in that the discharging device comprises a discharging pipe (10) fixedly connected to the outer side wall of the bottom of the fixed cylinder (3), a fixed flange is installed on the outer side wall of one end of the discharging pipe (10) far away from the fixed cylinder (3), and a control valve (11) is installed on the discharging pipe (10).
3. The gas storage wellhead throttling device according to claim 1, characterized in that a liquid level sensor (18) is mounted on the inner side wall of the bottom of the fixed cylinder (3), and the liquid level sensor (18) is positioned in the containing bin (16).
4. A gas storage reservoir wellhead restriction device according to claim 3 wherein the level sensors (18) are two in number and arranged in an up and down arrangement.
5. The gas storage wellhead throttling device according to claim 1, characterized in that the finned heat exchanger (17) is a cylindrical finned heat exchanger, and the finned heat exchanger (17) is arranged in a circular truncated cone shape.
6. The gas storage wellhead throttling device according to claim 1, characterized in that said connecting cylinder (4) is composed of two half-cylinders arranged in a truncated cone shape.
7. A gas storage reservoir wellhead restriction according to claim 1 characterised in that the pressure reduction means comprises a screw expander (14) mounted within a fixed pipe b (5).
8. The gas storage wellhead throttling device according to claim 7, characterized in that the output shaft of the screw expander (14) is connected with a transmission shaft (12) through a gear transmission box (15), and both ends of the transmission shaft (12) are provided with generators (13).
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| CN202110723147.3A CN113251232B (en) | 2021-06-29 | 2021-06-29 | Gas storage wellhead throttling device |
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| CN202110723147.3A CN113251232B (en) | 2021-06-29 | 2021-06-29 | Gas storage wellhead throttling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818847A (en) * | 2021-10-11 | 2021-12-21 | 西南石油大学 | Throttle device for gas storage |
| CN116696472A (en) * | 2023-07-13 | 2023-09-05 | 山东省煤田地质规划勘察研究院 | Gas storage well head throttling arrangement |
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