CN115704308A - Well control safety system - Google Patents
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- CN115704308A CN115704308A CN202110932775.2A CN202110932775A CN115704308A CN 115704308 A CN115704308 A CN 115704308A CN 202110932775 A CN202110932775 A CN 202110932775A CN 115704308 A CN115704308 A CN 115704308A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 154
- 238000012806 monitoring device Methods 0.000 claims abstract description 52
- 230000003993 interaction Effects 0.000 claims description 56
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The invention discloses a well control safety system, relates to the technical field of oil and gas field development, and mainly aims to improve timeliness and accuracy of well control risk monitoring. The main technical scheme of the invention is as follows: a well control safety system comprising: a monitoring device; the monitoring device comprises a first monitoring part, wherein the first monitoring part is arranged at a preset underground position and is used for monitoring preset monitoring data of the preset underground position; and/or the monitoring device comprises a second monitoring part, wherein the second monitoring part is arranged at a preset position on the well and is used for monitoring preset monitoring data of the preset position on the well; and the monitoring end is connected with the monitoring device and used for receiving the monitoring data of the monitoring device. The well control safety system is mainly used for safe well control operation.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a well control safety system.
Background
In oil and gas field exploitation operation, such as drilling, production, well workover and the like, in order to ensure safe operation, a blowout preventer is installed at a wellhead, and accidents such as well kick, blowout and the like are prevented by closing the blowout preventer.
At present, the operation for preventing the above accidents is generally: and after the abnormal phenomena such as overflow and the like of the well mouth are observed on the spot by a worker, an alarm is sent to the driller, and the driller implements the operation of closing the blowout preventer according to the related well control program.
However, the on-site observation of the staff may result in the discovery of abnormal phenomena such as overflow and the like in time, or misjudgment and the like due to insufficient experience, and further may cause serious safety risk liability accidents.
Disclosure of Invention
In view of this, embodiments of the present invention provide a well control safety system, which mainly aims to improve timeliness and accuracy of well control risk monitoring.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
the embodiment of the invention provides a well control safety system, which comprises:
a monitoring device; the monitoring device comprises a first monitoring part, wherein the first monitoring part is arranged at a preset underground position and is used for monitoring preset monitoring data of the preset underground position; and/or the monitoring device comprises a second monitoring part, wherein the second monitoring part is arranged at a preset position on the well and is used for monitoring preset monitoring data of the preset position on the well;
and the monitoring end is connected with the monitoring device and used for receiving the monitoring data of the monitoring device.
Specifically, when the monitoring device comprises a first monitoring part, the number of the first monitoring parts is multiple, the number of the underground preset positions is multiple, and the multiple first monitoring parts are respectively arranged at the multiple underground preset positions;
when the monitoring device comprises a second monitoring part, the number of the second monitoring part is multiple, the number of the underground preset positions is multiple, and the second monitoring part is respectively arranged in multiple underground preset positions.
Specifically, the monitoring end comprises a controller, the controller is connected with a blowout preventer control device, and the controller is used for controlling the blowout preventer control device to close the blowout preventer in a preset well control mode when monitoring data received from the monitoring device are abnormal.
The monitoring end further comprises a human-computer interaction and network access device, the human-computer interaction and network access device is connected with the controller, and the human-computer interaction and network access device is used for sending a preset well control mode to implement a well control preparation operation instruction to the controller when monitoring data of the monitoring device are received to be abnormal, so that the controller controls the blowout preventer control device to close the blowout preventer according to the preset well control mode.
Specifically, the monitoring end further comprises a control console, and the control console is a monitoring operation console for well control personnel; the control console is connected with the human-computer interaction and network access equipment and used for receiving a preset well control mode implementation well control preparation operation instruction sent by the human-computer interaction and network access equipment.
Specifically, the control console is further configured to control the human-computer interaction and network access device, so that the human-computer interaction and network access device controls the controller to control the blowout preventer control device to close the blowout preventer according to the preset well control mode.
The monitoring terminal further comprises a mobile terminal, the mobile terminal is connected with the human-computer interaction and network access device, and the mobile terminal is used for receiving monitoring information of the human-computer interaction and network access device.
Specifically, the mobile terminal is further configured to send a first control instruction to the human-computer interaction and network access device, so that the human-computer interaction and network access device controls the controller to control the blowout preventer control device to close the blowout preventer according to the preset well control mode;
and/or the presence of a gas in the atmosphere,
the mobile terminal is connected to the blowout preventer control device and is used for sending a second control command to the blowout preventer control device so as to control the blowout preventer control device to close the blowout preventer.
Specifically, the preset well control mode implementing well control preparation operation instruction comprises a well shut-in preparation operation program for overflow in the drilling process, and/or a well shut-in preparation operation program for overflow in a tripping drill pipe, and/or a well shut-in preparation operation program for overflow in a tripping drill collar, and/or a well shut-in preparation operation program for overflow in an empty well.
Specifically, the above-mentioned well control safety system further comprises:
the blowout preventer is an annular blowout preventer, a half-seal blowout preventer, a full-seal blowout preventer, a shear blowout preventer, a blowout preventer or a well control blowout preventer.
According to the well control safety system provided by the embodiment of the invention, the monitoring device is arranged, namely the first monitoring part is arranged at the underground preset position and/or the second monitoring part is arranged at the aboveground preset position and is used for monitoring corresponding preset monitoring data, namely data related to well control risks, for example, mud overflow, well kick, blowout preventer control device fault information, well site equipment pressure value and the like are monitored by acquiring corresponding pressure, flow, working pictures and the like, the monitoring device transmits the monitored data to the monitoring end, and a worker can acquire well control conditions in time through the monitoring end. The monitoring device is used for monitoring the related data of the well control risk, the obtained data is more accurate than the manual observation in the prior art, the monitoring end can obtain the monitoring data of the monitoring device in time, the staff can find the well control risk in time, the timeliness and the accuracy of the well control risk monitoring are improved, and therefore the safety risk liability accident is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a well control safety system according to an embodiment of the present invention.
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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a well control safety system, including: a monitoring device 1; the monitoring device 1 comprises a first monitoring part (not shown in the figure), wherein the first monitoring part is arranged at a preset underground position and is used for monitoring preset monitoring data of the preset underground position; and/or, the monitoring device 1 includes a second monitoring portion (not shown in the figure), which is disposed at an uphole preset position and is used for monitoring preset monitoring data of the uphole preset position; and the monitoring end 2 is connected with the monitoring device 1, and the monitoring end 2 is used for receiving monitoring data of the monitoring device 1.
Wherein, can set up monitoring devices 1 on the ground and/or in the pit and monitor data such as oil gas well exploitation in-process overflow, kick, blowout, preventer control device fault information, well site equipment pressure, can send these data to control end 2 so that make the staff in time, accurately obtain the operational aspect, when phenomenons such as the overflow takes place, unusual is gone out in the quick accurate monitoring of accessible monitoring devices 1 for the staff in time makes counter-measure.
The monitoring device 1 can adopt a sensor, a camera and the like, and can be arranged at a wellhead, or at a preset height position in a well, or at a preset position on the well; whether the abnormality exists can be monitored by measuring data such as fluid pressure, flow and the like or shooting working conditions of the underground and the aboveground as well as working tools, equipment and the like of the underground and the aboveground. The sensor can be a pressure sensor, a flow sensor, a gas sensor, etc.
The method comprises the steps that a first monitoring part is arranged underground, wherein the first monitoring part can comprise the sensor, a camera and the like, can be suspended at an underground preset position, or is arranged on an underground operation tool and goes into the underground preset position along with the underground operation tool; the first monitoring part monitors preset monitoring data of a preset position in the well, and the preset monitoring data can comprise high-risk gas content in the well, fluid pressure, fluid flow, a working picture in the well and the like. The first monitoring part is selected and used and the setting position is set according to the required monitoring data, and the setting position is not limited here.
The second monitoring part is arranged on the well, can comprise the sensor, the camera and the like, can be connected with a pipeline on the well to measure the pressure, the flow and the like of fluid in the pipeline, or shoot working pictures of equipment on the well head and the well. The second monitoring part is selected and used and the setting position is set according to the required monitoring data, and the setting position is not limited here.
According to the well control safety system provided by the embodiment of the invention, the monitoring device 1 is arranged, namely the first monitoring part is arranged at the underground preset position and/or the second monitoring part is arranged at the aboveground preset position and is used for monitoring corresponding preset monitoring data, namely data related to well control risks, for example, the monitoring device 1 transmits the monitored data to the monitoring end 2 by acquiring data such as corresponding pressure, flow, working pictures and the like for monitoring mud overflow, well kick, blowout preventer control device fault information, well site equipment pressure values and the like, and a worker can acquire well control conditions in time through the monitoring end 2. Wherein, monitor device 1 through to well control risk relevant data monitoring, the data that obtain compare among the prior art that the manual work is surveyd more accurately, and control end 2 can in time obtain monitoring data of monitoring device 1, can make the staff in time discover the well control risk, improve the promptness and the accuracy of well control risk monitoring to avoid the emergence of safe risk liability accident.
Specifically, when the monitoring device 1 includes a plurality of first monitoring portions, the number of the first monitoring portions is plural, the number of the downhole preset positions is plural, and the plurality of first monitoring portions are respectively disposed at the plurality of downhole preset positions; when monitoring devices 1 includes second monitoring portion, the quantity of second monitoring portion is a plurality of, and the quantity of position is predetermine to the well and is a plurality of, and a plurality of second monitoring portions set up respectively in a plurality of positions of predetermineeing to the well. Wherein, first monitoring portion and second monitoring portion can set up a plurality ofly respectively, select for use sensor, camera etc. of a plurality of differences according to the monitoring demand to make the data of surveying more comprehensive, accurate, a plurality of first monitoring portions and second monitoring portion can set up the position of a plurality of differences respectively, with survey more data more comprehensively, thereby guarantee well control safety better.
Specifically, the monitoring end 2 comprises a controller 21, the controller 21 is connected with the blowout preventer control device 3, and the controller 21 is configured to control the blowout preventer control device 3 to close the blowout preventer 4 in a preset well control manner when monitoring data received from the monitoring device 1 are abnormal. For example, the blowout preventer control device 3 may be designed to include an electromagnetic valve 31 and a three-position four-way rotary valve 32 connected to the electromagnetic valve 31, and when the controller 21 receives abnormal monitoring data of the monitoring device 1, that is, a well control risk may occur, the controller 21 may control the electromagnetic valve 31 to operate according to a preset well control mode corresponding to the monitoring data, so as to ventilate the cylinder 33 of the three-position four-way rotary valve 32, and drive the handle of the three-position four-way rotary valve 32 to turn over to close the blowout preventer 4. The preset well control mode is that according to the requirements of field operation, before the blowout preventer 4 is closed, the preset well control mode needs to be carried out to implement well control preparation operation, the preset well control mode has multiple well control preparation operations, and corresponding setting needs to be carried out according to the well control requirements. In this embodiment, a well control mode may be set in advance in the controller 21, a well control preparation operation may be performed, and then the blowout preventer control device 3 may be controlled to close the blowout preventer 4, so that automatic monitoring and control are more intelligent, rather than simply and directly closing the blowout preventer 4. Meanwhile, when the monitoring end receives abnormal monitoring data of the monitoring device 1, the staff can also know and take corresponding measures in time through the monitoring end.
Specifically, the monitoring end 2 further includes a human-computer interaction and network access device 22, the human-computer interaction and network access device 22 is connected to the controller 21, and the human-computer interaction and network access device 22 is configured to send a preset well control mode implementation well control preparation operation instruction to the controller 21 when receiving that the monitoring data of the monitoring device 1 is abnormal, so that the controller 21 controls the blowout preventer control device 3 to close the blowout preventer 4 according to the preset well control mode. The human-computer interaction and network access device 22 may include a computer, an industrial personal computer, and the like. The human-machine interaction and network access device 22 may receive the monitoring data of the monitoring apparatus 1, and when the monitoring data is abnormal, for example, when it is monitored that an overflow or a kick is sent, the human-machine interaction and network access device 22 sends a corresponding instruction to the controller 21, so that the controller 21 controls the blowout preventer control apparatus 3 to close the blowout preventer according to a preset well control manner. The man-machine interaction and network access equipment 22 is adopted, so that a worker can more directly obtain monitoring data through a man-machine interaction screen, automatic control or manual control can be performed on the controller 21 through the man-machine interaction and network access equipment 22, the man-machine interaction and network access equipment 22 can send an instruction to the controller 21, the blowout preventer control device 3 is controlled to close the blowout preventer according to a preset well control mode, or the worker can close the blowout preventer 4 after performing well control preparation operation according to the preset well control mode. The human-computer interaction and network access equipment 22 enables monitoring data to be clearer and more intuitive, and monitoring operation is more convenient and diversified.
Specifically, the monitoring end 2 further comprises a control console 23, and the control console 23 is a monitoring operation console for well control personnel; the control console 23 is connected with the human-computer interaction and network access device 22, and the control console 23 is used for receiving a preset well control mode implementation well control preparation operation instruction sent by the human-computer interaction and network access device 22. The monitoring data received by the human-computer interaction and network access device 22 can be transmitted to the control console 23, so that well control personnel at the control console 23 can obtain the monitoring data in time, when the monitoring data is abnormal, the human-computer interaction and network access device 22 sends a corresponding instruction to the control console 23 to indicate that well control preparation operation is implemented according to a preset well control mode, the well control personnel at the control console 23 can inform field workers of corresponding operation in time, and the well control personnel at the control console 23 can monitor continuously.
Specifically, the console 23 is further configured to control the human-computer interaction and network access device 22, so that the human-computer interaction and network access device 22 controls the controller 21 to control the blowout preventer control apparatus 3 to close the blowout preventer according to a preset well control manner. The well control personnel at the console 23 can send a control command to the human-computer interaction and network access device 22 by operating at the console 23, so that the human-computer interaction and network access device 22 controls the controller 21, and the controller 21 controls the blowout preventer control device 3 to close the blowout preventer according to a preset well control mode. Well control personnel at the control console 23 can conveniently and timely remotely control the human-computer interaction and network access equipment 22 so as to ensure timely monitoring of well control risks and further avoid safety risk liability accidents.
Specifically, the monitoring terminal 2 further includes a mobile terminal 24, the mobile terminal 24 is connected to the human-computer interaction and network access device 22, and the mobile terminal 24 is configured to receive monitoring information of the human-computer interaction and network access device 22. The mobile terminal 24 can be held by a worker, monitoring information received by the human-computer interaction and network access device 22 can be known at any time through the mobile terminal 24, the worker can conveniently monitor well control risks at any time and any place, and once abnormity is monitored, the worker can timely know and take corresponding measures.
Specifically, the mobile terminal 24 is further configured to send a first control instruction to the human-computer interaction and network access device 22, so that the human-computer interaction and network access device 22 controls the controller 21 to control the blowout preventer control device 3 to close the blowout preventer 4 according to a preset well control manner. When monitoring abnormality is known by a worker through the mobile terminal 24, well control preparation operation can be performed according to a plurality of preset well control modes, and then the blowout preventer 4 is closed; the worker can also operate the mobile terminal 24 to send a first control instruction to the human-computer interaction and network access device 22, so that the human-computer interaction and network access device 22 controls the controller 21 to control the blowout preventer control device 3 to close the blowout preventer 4 according to a preset well control mode. The mobile terminal 24 is used for remotely controlling the human-computer interaction and the network access equipment 22, so that safe well control operation can be carried out more timely.
Specifically, the mobile terminal 24 is connected to the blowout preventer control device 3, and the mobile terminal 24 is configured to send a second control command to the blowout preventer control device 3 to control the blowout preventer control device 3 to close the blowout preventer. The staff can operate the mobile terminal 24 to directly control the blowout preventer control device 3, so that the blowout preventer control device 3 closes the blowout preventer 4, and the blowout preventer 4 can be ensured to be closed more conveniently and timely.
The mobile terminal 24 can log in the cloud server 25 to perform well control real-time control on the wellhead blowout preventer 4, perform fault diagnosis and maintenance on the blowout preventer control device 3 by acquiring parameter information of the blowout preventer control device 3, and can dynamically browse information such as equipment parameters and pressure in the operation process.
Specifically, the preset well control mode implementing well control preparation operation instruction comprises a well shut-in preparation operation program for overflow in the drilling process, and/or a well shut-in preparation operation program for overflow in a tripping drill rod, and/or a well shut-in preparation operation program for overflow in a tripping drill collar, and/or a well shut-in preparation operation program for overflow in an empty well. Corresponding well control modes are set in the controller 21 according to the well shut-in preparation operation program so as to realize different well control preparation operations at different stages.
The well control safety system of the embodiment of the invention also comprises: the blowout preventer 4, the blowout preventer 4 is an annular blowout preventer, a half seal blowout preventer, a full seal blowout preventer, a shear blowout preventer, a blowout preventer or a well control blowout preventer.
According to the well control safety system provided by the embodiment of the invention, the monitoring device 1 is arranged, namely the first monitoring part is arranged at the underground preset position and/or the second monitoring part is arranged at the aboveground preset position and is used for monitoring corresponding preset monitoring data, namely data related to well control risks, for example, the monitoring device 1 transmits the monitored data to the monitoring end 2, including the controller 21 and the human-computer interaction and network access equipment 22, by acquiring data such as corresponding pressure, flow, working pictures and the like for monitoring mud overflow, well kick, fault information of the blowout preventer control device 3, pressure values of well site equipment and the like, and a worker can timely acquire a well control condition through the monitoring end 2; when the controller 21 or the human-computer interaction and network access equipment 22 monitors that abnormal conditions such as overflow or well kick occur, well control preparation operation is correspondingly implemented according to the abnormal conditions in a preset well control mode, the preset well control mode can be set in the controller 21, or the operation is carried out by a worker, and then the blowout preventer is controlled to be closed through the blowout preventer control device 3; well control personnel at the console 23 receive monitoring data sent by the human-computer interaction and network access equipment 22 through the console 23, and can remotely control the human-computer interaction and network access equipment 22 through operating on the console 23 to perform safe well control operation; the worker can receive the monitoring data sent by the human-computer interaction and network access device 22 through the mobile terminal 24, and can remotely control the human-computer interaction and network access device 22 and the blowout preventer control device 3 through operating the mobile terminal 24 to perform safe well control operation. According to the embodiment of the invention, the monitoring device 1 is used for monitoring the related data of the well control risk, the obtained data is more accurate than the manual observation in the prior art, and the monitoring end 2 can timely obtain the monitoring data of the monitoring device 1, so that the workers can timely find the well control risk, the timeliness and the accuracy of well control risk monitoring are improved, and the occurrence of safety risk liability accidents is avoided.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A well control safety system, comprising:
a monitoring device; the monitoring device comprises a first monitoring part, wherein the first monitoring part is arranged at a preset underground position and is used for monitoring preset monitoring data of the preset underground position; and/or the monitoring device comprises a second monitoring part, wherein the second monitoring part is arranged at a preset position on the well and is used for monitoring preset monitoring data of the preset position on the well;
and the monitoring end is connected with the monitoring device and used for receiving the monitoring data of the monitoring device.
2. The well control safety system of claim 1,
when the monitoring device comprises a plurality of first monitoring parts, the number of the first monitoring parts is multiple, the number of the underground preset positions is multiple, and the first monitoring parts are respectively arranged at the plurality of underground preset positions;
when the monitoring device comprises a second monitoring part, the number of the second monitoring part is multiple, the number of the underground preset positions is multiple, and the second monitoring part is respectively arranged in multiple underground preset positions.
3. A well control safety system according to claim 1 or 2,
the monitoring end comprises a controller, the controller is connected with a blowout preventer control device, and the controller is used for controlling the blowout preventer control device to close the blowout preventer according to a preset well control mode when monitoring data received from the monitoring device are abnormal.
4. A well control safety system according to claim 3,
the monitoring end further comprises a human-computer interaction and network access device, the human-computer interaction and network access device is connected with the controller, and the human-computer interaction and network access device is used for sending a preset well control mode to implement a well control preparation operation instruction to the controller when monitoring data of the monitoring device are received to be abnormal, so that the controller controls the blowout preventer control device to close the blowout preventer according to the preset well control mode.
5. A well control safety system according to claim 4,
the monitoring end also comprises a control console, and the control console is a monitoring operation console for well control personnel; the control console is connected with the human-computer interaction and network access equipment and used for receiving a preset well control mode implementation well control preparation operation instruction sent by the human-computer interaction and network access equipment.
6. A well control safety system according to claim 5,
the control console is further used for controlling the human-computer interaction and network access equipment, so that the human-computer interaction and network access equipment controls the controller to control the blowout preventer control device to close the blowout preventer according to the preset well control mode.
7. A well control safety system according to claim 4,
the monitoring terminal also comprises a mobile terminal, the mobile terminal is connected with the human-computer interaction and network access equipment, and the mobile terminal is used for receiving monitoring information of the human-computer interaction and network access equipment.
8. A well control safety system according to claim 7,
the mobile terminal is further used for sending a first control instruction to the human-computer interaction and network access equipment so that the human-computer interaction and network access equipment controls the controller to control the blowout preventer control device to close the blowout preventer according to the preset well control mode;
and/or the presence of a gas in the gas,
the mobile terminal is connected to the blowout preventer control device and is used for sending a second control command to the blowout preventer control device so as to control the blowout preventer control device to close the blowout preventer.
9. A well control safety system according to any one of claims 4 to 8,
the preset well control mode implementation well control preparation operation instruction comprises a well shut-in preparation operation program for overflow in drilling, and/or a well shut-in preparation operation program for overflow in tripping down a drill rod, and/or a well shut-in preparation operation program for overflow in tripping down a drill collar, and/or a well shut-in preparation operation program for overflow in an empty well.
10. A well control safety system as defined in claim 3, further comprising:
the blowout preventer is an annular blowout preventer, a half-seal blowout preventer, a full-seal blowout preventer, a shearing blowout preventer, a blowout preventer or a well control blowout preventer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932775.2A CN115704308A (en) | 2021-08-13 | 2021-08-13 | Well control safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932775.2A CN115704308A (en) | 2021-08-13 | 2021-08-13 | Well control safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115704308A true CN115704308A (en) | 2023-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110932775.2A Pending CN115704308A (en) | 2021-08-13 | 2021-08-13 | Well control safety system |
Country Status (1)
| Country | Link |
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| CN (1) | CN115704308A (en) |
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2021
- 2021-08-13 CN CN202110932775.2A patent/CN115704308A/en active Pending
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