CN212774225U - Intelligent control system for high-pressure gas wellhead - Google Patents
Intelligent control system for high-pressure gas wellhead Download PDFInfo
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- CN212774225U CN212774225U CN201922468532.9U CN201922468532U CN212774225U CN 212774225 U CN212774225 U CN 212774225U CN 201922468532 U CN201922468532 U CN 201922468532U CN 212774225 U CN212774225 U CN 212774225U
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Abstract
The utility model provides a high pressure gas wellhead intelligent control system, include: RTU9, a main power control loop, a downhole safety valve driving loop, a ground main safety valve driving loop, a ground wing safety valve driving loop, a wellhead throttling control loop and a low-pressure control loop; the downhole safety valve driving circuit comprises a first pilot control valve; the ground main safety valve driving circuit comprises a second pilot control valve; the ground wing safety valve driving circuit comprises a third pilot control valve; the wellhead throttling control loop comprises a first throttling valve and a second throttling valve which are connected, and the low-pressure control loop is used for driving the first pilot control valve, the second pilot control valve and the third pilot control valve. The utility model discloses a RTU through collection, the analysis of data, realizes corresponding logic control to carry out organic with subsurface safety valve, ground main safety valve, ground wing relief valve, well head choke valve and combine the realization integration control.
Description
Technical Field
The utility model relates to a high pressure gas wellhead technical field specifically relates to a high pressure gas wellhead intelligence control system.
Background
The high-pressure natural gas well has the characteristics of high pressure, high temperature and high yield, the corresponding production process is more complicated than that of a conventional well head, and the corresponding control requirement is higher than that of the conventional well head. At present, the control of a safety valve, the regulation of flow pressure and the acquisition of ground data are separately realized on a plurality of devices in a high-pressure gas well, and the integrated control of underground equipment, wellhead equipment and ground equipment cannot be realized. The equipment can not realize organic linkage according to the production process and the control requirement, and particularly, the logic control related to the safety can not ensure the safety production on site. Therefore, the existing high-pressure gas well site has the following defects: the equipment is dispersed, and integrated control cannot be realized; secondly, the intelligent degree of the equipment is low, and the logic control cannot be well realized; (III) stability and reliability are to be enhanced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a high pressure gas wellhead intelligent control system, include: the system comprises an RTU, a main power control loop, an underground safety valve driving loop, a ground main safety valve driving loop, a ground wing safety valve driving loop, a wellhead throttling control loop and a low-pressure control loop;
the output end of the driving force control loop is respectively connected with the input ends of the underground safety valve driving loop and the ground main safety valve driving loop;
the driving circuit of the downhole safety valve comprises a first one-way valve, a first energy accumulator, a first pilot control valve, a second pressure transmitter, a second pressure gauge and the downhole safety valve which are sequentially connected in series;
the ground main safety valve driving circuit comprises a first pressure regulating valve, a second one-way valve, a second pilot control valve, a third pressure transmitter, a third pressure gauge and a ground main safety valve which are sequentially connected in series;
the input end of the ground wing safety valve driving loop is arranged between the first pressure regulating valve and the second one-way valve, and the ground wing safety valve driving loop comprises a fourth pressure gauge, a third one-way valve, a third pilot control valve, a fourth pressure transmitter, a fifth pressure gauge and a ground wing safety valve which are sequentially connected in series;
the input end of the wellhead throttling control loop is connected with the output end of the ground wing safety valve, and the wellhead throttling control loop comprises a first throttling valve, a second throttling valve, a fifth pressure transmitter, a sixth pressure transmitter and a seventh pressure transmitter which are sequentially connected in series;
the input end of the low-pressure control loop is arranged between the first pressure regulating valve and the second one-way valve, and the output end of the low-pressure control loop is respectively connected with the input ends of the pilot control loop of the underground safety valve and the pilot control loop of the ground main safety valve;
and the second pressure transmitter, the third pressure transmitter, the fourth pressure transmitter, the first throttling valve, the second throttling valve, the fifth pressure transmitter, the sixth pressure transmitter and the seventh pressure transmitter are connected with the RTU.
Further, the low-pressure control loop comprises a second pressure regulating valve, a fourth one-way valve, a third energy accumulator, a sixth pressure gauge and a first electromagnetic valve which are sequentially connected; the pilot control loop of the downhole safety valve comprises a first one-way throttle valve, and the output end of the first one-way throttle valve is connected with the pilot end of the first pilot control valve; the ground main safety valve pilot control loop comprises a second electromagnetic valve and a second one-way throttle valve which are connected, and the output end of the second one-way throttle valve is connected with the pilot end of the second pilot control valve.
The ground wing safety valve pilot control circuit comprises a third electromagnetic valve, and the output end of the third electromagnetic valve is connected with the pilot end of the third pilot control valve.
Further, still include the fusible plug return circuit, the input setting of fusible plug return circuit is in between sixth manometer and the first solenoid valve, the fusible plug return circuit includes consecutive fourth pilot control valve, third throttle valve, pressure switch, fusible plug, still includes fusible plug pilot control return circuit, the input setting of fusible plug pilot control return circuit is in between sixth manometer and the fourth pilot control valve, the output with the pilot end of fourth pilot control valve is continuous, fusible plug pilot control return circuit includes continuous pressure charging valve, fifth check valve.
Further, the main power control loop comprises an oil tank, a first electric pump, a first pressure transmitter and a first pressure gauge which are sequentially connected in series, and the first electric pump and the first pressure transmitter are connected with the RTU.
Furthermore, the oil tank further comprises a manual pump, one end of the manual pump is connected with the oil tank, and the other end of the manual pump is connected with the first pressure transmitter.
Further, a second energy accumulator is arranged between the first pressure regulating valve and the second one-way valve.
Further, a wellhead pressure transmitter and a wellhead temperature transmitter are arranged between the ground wing safety valve and the first throttling valve.
The utility model discloses a RTU through collection, the analysis of data, realizes corresponding logic control to carry out organic combination with downhole safety valve, ground main safety valve, ground wing relief valve, well head choke valve and realize integrated control, thereby realize the reliable and stable intelligent control of high pressure gas well head. The main power control circuit is used for providing hydraulic power required by the system; the wellhead throttling control loop adopts a two-stage throttling valve, and controls the output pressure and flow of the high-pressure gas well by controlling and adjusting the first throttling valve and the second throttling valve to meet the requirements of the production process; and three pressure transmitters are arranged behind the second-stage throttle valve and are connected with the RTU, and the RTU adopts a 2-out-of-3 voting logic judgment to serve as a condition for controlling the closing of the electrically controllable valve, so that a high-reliability high-voltage protection function is achieved.
The underground safety valve driving loop provides driving force for opening of the underground safety valve, the underground safety valve pilot control loop provides pilot conditions for opening and closing of the underground safety valve, in the production process, low pressure provided by the underground safety valve pilot control loop drives a pilot end of a first pilot control valve to enable an inlet and an outlet of the first pilot control valve to be communicated, and high pressure drives hydraulic oil to be output to the underground safety valve to enable the underground safety valve to be opened; after production is finished, due to the fact that the system is powered off, the pressure of the pilot end of the first pilot control valve is released, the inlet and the outlet of the first pilot control valve are not communicated, and the underground safety valve is automatically closed due to the fact that the pressure is lost.
The ground main safety valve driving circuit provides driving force for opening the ground main safety valve, the ground main safety valve pilot control circuit provides pilot conditions for opening and closing the ground main safety valve, in the production process, low pressure provided by the ground main safety valve pilot control circuit drives a pilot end of a second pilot control valve to enable an inlet and an outlet of the second pilot control valve to be communicated, and medium pressure drives hydraulic oil to be output to the ground main safety valve to enable the ground main safety valve to be opened; after production is finished, the pressure of the pilot end of the second pilot control valve is released, the inlet and the outlet of the second pilot control valve are not communicated, and the ground main safety valve is closed due to pressure loss.
The ground wing safety valve driving circuit provides driving force for opening the ground wing safety valve, the ground wing safety valve pilot control circuit provides pilot conditions for opening and closing the ground wing safety valve, in the production process, low pressure provided by the ground wing safety valve pilot control circuit drives a pilot end of a third pilot control valve to enable an inlet and an outlet of the third pilot control valve to be communicated, and medium pressure drives hydraulic oil to be conveyed to the ground wing safety valve to enable the ground wing safety valve to be opened; after production is finished, the pressure of the pilot end of the third pilot control valve is released, the inlet and the outlet of the third pilot control valve are not communicated, and the ground wing safety valve is closed due to pressure loss.
The manual pump is used as a spare device for preparing for the need from time to time, so that the reliability and the stability of the equipment are improved, and the requirement of continuous production is ensured.
The fusible plug loop provides safety guarantee for the whole system, when a fire disaster happens, the fusible plug is melted, and when the pressure switch detects that the pressure is lower, the RTU controls the electrically controlled valve to be closed.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent control system for a high-pressure gas wellhead provided by the invention;
wherein, 1, an oil tank; 21. a first electric pump; 22. a first pressure transmitter; 23. a first pressure gauge; 24. A manual pump; 31. a first check valve; 32. a first energy storage; 33. a first pilot control valve; 34. a second pressure transmitter; 35. a second pressure gauge; 36. a downhole safety valve; 41. a first pressure regulating valve; 42. a second one-way valve; 43. a second pilot control valve; 44. a third pressure transmitter; 45. a third pressure gauge; 46. a ground primary safety valve; 51. a second energy storage; 52. a fourth pressure gauge; 53. a third check valve; 54. a third pilot control valve; 55. a fourth pressure transmitter; 56. a fifth pressure gauge; 57. a ground wing safety valve; 61. a wellhead pressure transmitter; 62. a wellhead temperature transmitter; 63. a first throttle valve; 64. a second throttle valve; 65. a fifth pressure transmitter; 66. a sixth pressure transmitter; 67. a seventh pressure transmitter; 71. a second pressure regulating valve; 72. A fourth check valve; 73. a third energy storage; 74. a sixth pressure gauge; 75. a first solenoid valve; 751. a first one-way throttle valve; 76. a second solenoid valve; 761. a second one-way throttle valve; 77. a third electromagnetic valve; 81. A pressure charging valve; 82. a fifth check valve; 83. a fourth pilot control valve; 84. a third throttle valve; 85. a pressure switch; 86. a fusible plug; 9. and (7) RTU.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model provides a high pressure gas wellhead intelligent control system, include: RTU9, main power control loop, downhole safety valve driving loop, ground main safety valve driving loop, ground wing safety valve driving loop, wellhead throttling control loop, low-pressure control loop and fusible plug loop.
And the output end of the driving force control loop is respectively connected with the input ends of the underground safety valve driving loop and the ground main safety valve driving loop. The main power control loop comprises an oil tank 1, a first electric pump 21, a first pressure transmitter 22, a first pressure gauge 23 and a manual pump 24 which are sequentially connected in series, wherein one end of the manual pump 24 is connected with the oil tank 1, and the other end of the manual pump is connected with the first pressure transmitter 22; the first electric pump 21 and the first pressure transmitter 22 are connected with the RTU 9. The first electric pump 21 here uses an electric hydraulic pump with overpressure protection and a manual pump as a back-up pump, in order to ensure continuous production, as needed.
The driving circuit of the downhole safety valve comprises a first check valve 31, a first energy storage 32, a first pilot control valve 33, a second pressure transmitter 34, a second pressure gauge 35 and a downhole safety valve 36 which are sequentially connected in series, wherein the second pressure transmitter 34 is connected with the RTU 9. The second pressure transmitter transmits the detected pressure to the RTU in real time.
The ground main safety valve driving loop comprises a first pressure regulating valve 41, a second one-way valve 42, a second pilot control valve 43, a third pressure transmitter 44, a third pressure gauge 45 and a ground main safety valve 46 which are sequentially connected in series, wherein the third pressure transmitter 44 is connected with the RTU 9. The third pressure transmitter transmits the detected pressure to the RTU in real time.
The input end of the ground wing safety valve driving circuit is arranged between the first pressure regulating valve 41 and the second check valve 42, the ground wing safety valve driving circuit comprises a fourth pressure gauge 52, a third check valve 53, a third pilot control valve 54, a fourth pressure transmitter 55, a fifth pressure gauge 56 and a ground wing safety valve 57 which are sequentially connected in series, and the fourth pressure transmitter 55 is connected with the RTU 9. The fourth pressure transmitter transmits the detected pressure to the RTU in real time.
The input end of the wellhead throttling control loop is connected with the output end of the ground wing safety valve 57, the wellhead throttling control loop comprises a first throttling valve 63, a second throttling valve 64, a fifth pressure transmitter 65, a sixth pressure transmitter 66 and a seventh pressure transmitter 67 which are sequentially connected in series, and the first throttling valve 63, the second throttling valve 64, the fifth pressure transmitter 65, the sixth pressure transmitter 66 and the seventh pressure transmitter 67 are connected with the RTU 9. The output pressure and the flow of the high-pressure gas well are controlled by controlling and adjusting the first throttling valve and the second throttling valve, so that the requirements of the production process are met; and three pressure transmitters are arranged behind the second-stage throttle valve and are connected with the RTU, and the RTU adopts a 2-out-of-3 voting logic judgment to serve as a condition for controlling the closing of the electrically controllable valve, so that a high-reliability high-voltage protection function is achieved.
The input end of the low-pressure control loop is arranged between the first pressure regulating valve 41 and the second one-way valve 42, and the output end of the low-pressure control loop is respectively connected with the input ends of the pilot control loop of the downhole safety valve and the pilot control loop of the ground main safety valve; the low-pressure control loop comprises a second pressure regulating valve 71, a fourth one-way valve 72, a third energy accumulator 73, a sixth pressure gauge 74 and a first electromagnetic valve 75 which are connected in sequence; the pilot control loop of the downhole safety valve comprises a first one-way throttle 751, wherein the output end of the first one-way throttle 751 is connected with the pilot end of the first pilot control valve 33; the ground safety valve pilot control loop comprises a second electromagnetic valve 76 and a second one-way throttle valve 761 which are connected, and the output end of the second one-way throttle valve 761 is connected with the pilot end of the second pilot control valve 43. The ground wing safety valve pilot control loop is characterized by further comprising a ground wing safety valve pilot control loop, wherein the input end of the ground wing safety valve pilot control loop is arranged between the second electromagnetic valve 76 and the second one-way throttle valve 761, the ground wing safety valve pilot control loop comprises a third electromagnetic valve 77, and the output end of the third electromagnetic valve 77 is connected with the pilot end of the third pilot control valve 54. The first solenoid valve 75, the second solenoid valve 76, and the third solenoid valve 77 are connected to the RTU 9.
The input setting of fusible plug return circuit is in between sixth manometer 74 and the first solenoid valve 75, the fusible plug return circuit still includes fusible plug pilot control return circuit including consecutive fourth pilot control valve 83, third throttle 84, pressure switch 85, fusible plug 86, the input setting of fusible plug pilot control return circuit is in between sixth manometer 74 and the fourth pilot control valve 83, the output with the pilot end of fourth pilot control valve 83 links to each other, fusible plug pilot control return circuit is including continuous pressure charging valve 81, fifth check valve 82, pressure switch 85 with RTU9 links to each other.
Further, a second accumulator 51 is provided between the first pressure regulating valve 41 and the second check valve 42. After the first pressure regulating valve 41 regulates the pressure, the second accumulator 51 helps to stabilize the pressure and provide emergency oil supply.
Further, a wellhead pressure transmitter 61 and a wellhead temperature transmitter 62 are arranged between the ground wing safety valve 57 and the first throttling valve 63, and the wellhead pressure transmitter 61 and the wellhead temperature transmitter 62 are connected with the RTU 9.
The utility model discloses a theory of operation does:
starting the first electric pump and other electrically controllable devices, wherein the first electric pump 21 outputs a high voltage of about 70 MPa; the underground safety valve driving loop is used for conveying high-pressure driving hydraulic oil of about 70MPa to an inlet of the first pilot control valve 33, at the moment, the inlet and the outlet of the first pilot control valve are not communicated, and the high-pressure driving hydraulic oil cannot reach the underground safety valve 36; a ground main safety valve driving loop, wherein the first pressure regulating valve 41 reduces the high pressure of about 70MPa to the medium pressure of about 21MPa, the reduced medium pressure drives hydraulic oil to be conveyed to an inlet of the second pilot control valve 43, at the moment, the inlet and the outlet of the second pilot control valve are not communicated, and the medium pressure drives hydraulic oil to not reach a ground main safety valve 46; and in the ground wing safety valve driving circuit, the medium-pressure driving hydraulic oil is conveyed to the inlet of the third pilot control valve 54, at the moment, the inlet and the outlet of the third pilot control valve are not communicated, and the medium-pressure driving hydraulic oil cannot reach the ground wing safety valve 57. A low pressure control circuit, the second pressure regulating valve 71 further reduces the medium pressure of about 21MPa to a low pressure of about 0.7MPa, the low pressure control hydraulic oil output by the second pressure regulating valve 71 is transmitted to the first one-way throttle 751 through the first electromagnetic valve 75, the inlet and the outlet of the first pilot control valve 33 are driven to be communicated, the high pressure drive hydraulic oil is transmitted to the downhole safety valve 36, and the downhole safety valve 36 is opened; the low-pressure control hydraulic oil is transmitted to the second one-way throttle valve 761 through the second electromagnetic valve 76, the inlet and the outlet of the second pilot control valve 43 are driven to be communicated, and the medium-pressure drive hydraulic oil reaches the ground main safety valve 46, so that the ground main safety valve is opened; the low pressure control hydraulic oil is transmitted to the pilot end of the third pilot control valve 54 through the third electromagnetic valve 77, the inlet and the outlet of the third pilot control valve 54 are driven to be communicated, and the medium pressure driving hydraulic oil reaches the ground wing safety valve 57, so that the ground main safety valve is opened.
In the fusible plug circuit, the low-pressure control hydraulic oil reaches the charging valve 81 and the inlet of the fourth pilot control valve 83, at this time, the inlet and the outlet of the fourth pilot control valve 83 are not connected, so the low-pressure control hydraulic oil flows to the check valve 82 through the charging valve 81, further the inlet and the outlet of the fourth pilot control valve 83 are driven to be connected, and then the low-pressure control hydraulic pressure is transmitted to the throttle valve 84 through the fourth pilot control valve 83, further flows to the pressure switch 85 and the fusible plug 86, and the pressure switch 85 transmits the detected pressure to the SCADA system 9. When a fire occurs, the fusible plug 86 melts, the pressure in the fusible plug circuit decreases, and the pressure switch 85 detects the pressure decrease, the RTU9 controls all the electrically controllable valves to close, thus ensuring the safety of the system.
After the production job is finished, the RTU9 controls the electrically controllable valve to close.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The utility model provides a high pressure gas wellhead intelligent control system which characterized in that includes: the system comprises an RTU (9), a main power control loop, an underground safety valve driving loop, a ground main safety valve driving loop, a ground wing safety valve driving loop, a wellhead throttling control loop and a low-pressure control loop;
the output end of the driving force control loop is respectively connected with the input ends of the underground safety valve driving loop and the ground main safety valve driving loop;
the driving circuit of the downhole safety valve comprises a first one-way valve (31), a first energy storage device (32), a first pilot control valve (33), a second pressure transmitter (34), a second pressure gauge (35) and a downhole safety valve (36) which are sequentially connected in series;
the ground main safety valve driving circuit comprises a first pressure regulating valve (41), a second one-way valve (42), a second pilot control valve (43), a third pressure transmitter (44), a third pressure gauge (45) and a ground main safety valve (46) which are sequentially connected in series;
the input end of the ground wing safety valve driving circuit is arranged between the first pressure regulating valve (41) and the second one-way valve (42), and the ground wing safety valve driving circuit comprises a fourth pressure gauge (52), a third one-way valve (53), a third pilot control valve (54), a fourth pressure transmitter (55), a fifth pressure gauge (56) and a ground wing safety valve (57) which are sequentially connected in series;
the input end of the wellhead throttling control loop is connected with the output end of the ground wing safety valve (57), and the wellhead throttling control loop comprises a first throttling valve (63), a second throttling valve (64), a fifth pressure transmitter (65), a sixth pressure transmitter (66) and a seventh pressure transmitter (67) which are sequentially connected in series;
the input end of the low-pressure control loop is arranged between the first pressure regulating valve (41) and the second one-way valve (42), and the output end of the low-pressure control loop is respectively connected with the input ends of the pilot control loop of the underground safety valve and the pilot control loop of the ground main safety valve;
and the second pressure transmitter (34), the third pressure transmitter (44), the fourth pressure transmitter (55), the first throttle valve (63), the second throttle valve (64), the fifth pressure transmitter (65), the sixth pressure transmitter (66) and the seventh pressure transmitter (67) are connected with the RTU (9).
2. The intelligent control system for the high-pressure gas well mouth as claimed in claim 1, wherein the low-pressure control loop comprises a second pressure regulating valve (71), a fourth one-way valve (72), a third energy storage device (73), a sixth pressure gauge (74) and a first electromagnetic valve (75) which are connected in sequence; the pilot control loop of the downhole safety valve comprises a first one-way throttle valve (751), and the output end of the first one-way throttle valve (751) is connected with the pilot end of the first pilot control valve (33); the ground main safety valve pilot control loop comprises a second electromagnetic valve (76) and a second one-way throttle valve (761) which are connected, and the output end of the second one-way throttle valve (761) is connected with the pilot end of the second pilot control valve (43).
3. The high-pressure gas wellhead intelligent control system as claimed in claim 2, further comprising a surface wing safety valve pilot control loop, an input end of which is arranged between the second solenoid valve (76) and a second one-way throttle valve (761), the surface wing safety valve pilot control loop comprising a third solenoid valve (77), an output end of the third solenoid valve (77) being connected with a pilot end of the third pilot control valve (54).
4. The intelligent control system for the high-pressure gas wellhead as claimed in claim 2 further comprises a fusible plug loop, wherein an input end of the fusible plug loop is arranged between the sixth pressure gauge (74) and the first electromagnetic valve (75), the fusible plug loop comprises a fourth pilot control valve (83), a third throttle valve (84), a pressure switch (85) and a fusible plug (86) which are sequentially connected, the fusible plug loop further comprises a fusible plug pilot control loop, an input end of the fusible plug pilot control loop is arranged between the sixth pressure gauge (74) and the fourth pilot control valve (83), an output end of the fusible plug pilot control loop is connected with a pilot end of the fourth pilot control valve (83), and the fusible plug pilot control loop comprises a charging valve (81) and a fifth one-way valve (82) which are connected.
5. The intelligent control system for the high-pressure gas wellhead as claimed in claim 1, characterized in that the main power control loop comprises an oil tank (1), a first electric pump (21), a first pressure transmitter (22) and a first pressure gauge (23) which are connected in series in sequence, wherein the first electric pump (21) and the first pressure transmitter (22) are connected with the RTU (9).
6. The intelligent control system for high-pressure gas wellhead as claimed in claim 5 further comprising a manual pump (24), wherein one end of the manual pump (24) is connected with the oil tank (1) and the other end is connected with the first pressure transmitter (22).
7. The intelligent control system for the high-pressure gas wellhead as claimed in claim 1 wherein a second energy storage device (51) is further arranged between the first pressure regulating valve (41) and the second one-way valve (42).
8. The intelligent control system for the high-pressure gas well mouth as recited in claim 1, characterized in that a well mouth pressure transmitter (61) and a well mouth temperature transmitter (62) are arranged between the surface wing safety valve (57) and the first throttling valve (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468532.9U CN212774225U (en) | 2019-12-31 | 2019-12-31 | Intelligent control system for high-pressure gas wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468532.9U CN212774225U (en) | 2019-12-31 | 2019-12-31 | Intelligent control system for high-pressure gas wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774225U true CN212774225U (en) | 2021-03-23 |
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ID=75025651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468532.9U Active CN212774225U (en) | 2019-12-31 | 2019-12-31 | Intelligent control system for high-pressure gas wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774225U (en) |
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2019
- 2019-12-31 CN CN201922468532.9U patent/CN212774225U/en active Active
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