Well control emergency disposal system

Abstract

The invention discloses an emergency disposal system for well control emergencies. An overflow early warning system comprises an overflow classification analysis system and an overflow alarm system. The overflow classification analysis system comprises a drilling abnormal high-pressure layer analysis system and an annular pressure loss disappearance analysis system; the drilling abnormal high-pressure layer analysis system comprises a dc index calculation system and a temperature gradient method calculation system; the annulus pressure loss disappearance analysis system comprises a backflow monitoring analysis system and a single gas receiving analysis system; the overflow early warning system can send overflow early warning information to the overflow alarm system. By designing an early warning monitoring algorithm and monitoring the real-time change of the pressure of the shaft based on the real-time data of the shaft, the change of the well control can be monitored and prevented, and the well control is prevented from being out of control by automatically monitoring and sending the early warning information.

Description

Technical Field

[0001] The present invention belongs to the technical field of informatization construction in the oil and gas industry, and particularly relates to a well control emergency disposal system. Background Art

[0002] Blowout accidents are serious safety production accidents in oilfields, and well control management is of utmost importance for oilfield safety production.

[0003] Once the engineering and technical department receives well control emergencies such as overflow and well kick, it immediately initiates a well control emergency response, and notifies the emergency teams, experts, equipment, materials, and vehicles near the accident site for rescue through communication means such as telephone and WeChat. However, it is impossible to accurately locate the position of emergency resources and track the running trajectory of vehicles in real time.

[0004] The patent application with the publication number CN114021893A and the name of a method and system for coupling analysis of well control risks in controlled pressure drilling includes six main steps: identifying risk factors, establishing a coupling model, tracking and updating risk states, determining dynamic factors, determining model structures, and determining model parameters. The well control risk coupling analysis system for controlled pressure drilling includes four parts: a data analysis and processing subsystem, a state monitoring subsystem for controlled pressure drilling mechanical equipment, an overflow monitoring subsystem, and a bottom hole pressure monitoring subsystem. Although this patent application can evaluate well control risks in drilling, the system composition is complex, and it is difficult to achieve automatic overflow alarm, and it cannot solve the problem of how to further handle risks when they occur. Summary of the Invention

[0005] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a well control emergency disposal system, which can automatically search and locate emergency resources around the accident well to assist in rapid resource allocation; monitor the running trajectory of vehicles, on-site videos, and rescue progress in real time to master the on-site situation in real time; the system provides a kill operation simulation tool and a large amount of technical data of the well and adjacent wells to assist experts in studying measures and remote command. Through risk identification and early warning, and emergency resource monitoring, it provides technical support for emergency response.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A well control emergency disposal system, comprising:

[0008] An overflow early warning system, which includes an overflow classification analysis system and an overflow alarm system;

[0009] Among them, the overflow classification analysis system includes a drilling encounter abnormal high-pressure layer analysis system and an annulus pressure loss disappearance analysis system; the drilling encounter abnormal high-pressure layer analysis system includes a dc index calculation system and a temperature gradient method calculation system. The dc index calculation system can judge abnormal formation pressure by comparing with the dc index pressure trend line in the normal section, and the temperature gradient method calculation system can judge the abnormal high-pressure transition zone according to the change of temperature gradient. When any one of the dc index calculation system or the temperature gradient method calculation system exceeds the critical value, an overflow warning is issued; the annulus pressure loss disappearance analysis system includes a backflow monitoring analysis system and a connection gas analysis system. The backflow monitoring analysis system can compare the liquid volume in the pump-off state with the liquid volume before the pump is stopped, and the connection gas analysis system can compare the peak gas pressure in the pump-off state with the reference gas pressure. When any one of the backflow monitoring analysis system or the connection gas analysis system exceeds the critical value, an overflow warning is issued; the overflow warning system can send the overflow warning information to the overflow alarm system.

[0010] Optionally, the overflow alarm system makes an overflow alarm judgment manually based on the overflow warning information and sends the overflow alarm information.

[0011] Optionally, the well control emergency response system further includes a remote console real-time monitoring system. The remote console real-time monitoring system includes a pressure sensor, a position sensor, and a liquid level sensor. The pressure sensor can collect gas source pressure, power supply pressure, manifold pressure, annular pressure, and accumulator pressure information. The position sensor can collect handle position information, and the liquid level sensor can collect fuel tank liquid level information; among them, when any one of the gas source pressure, power supply pressure, manifold pressure, annular pressure, and accumulator pressure exceeds the threshold value, an abnormal alarm is issued; when the fuel tank liquid level exceeds the lower limit of the page scale, an abnormal alarm is issued; when the handle position is judged to be abnormal by the monitoring personnel, an abnormal alarm is issued.

[0012] Optionally, the threshold value of the gas source pressure is 0.65 Mpa to 1.3 Mpa, the threshold value of the power supply pressure is 0.65 Mpa to 1.3 Mpa, the threshold value of the manifold pressure is 9.8 Mpa to 11.2 Mpa, the threshold value of the annular pressure is 8.5 Mpa to 10.5 Mpa, and the threshold value of the accumulator pressure is 18.5 Mpa to 21 Mpa.

[0013] Optionally, the well control emergency response system further includes a main interface system, and the main interface system can display the abnormal alarm information of the remote console real-time monitoring system, the overflow warning information, and the overflow alarm information of the overflow warning system.

[0014] Optionally, the main interface system includes a map system and an emergency resource visualization system. The map system can display a regional map. The emergency resource visualization system includes a location display module and a road information module. The location information in both the location display module and the road information module can be displayed on the regional map of the map system. The location display module includes a well position module, a mud station position module, an emergency team position module, and a hospital position module.

[0015] Optionally, the well position module in the emergency resource visualization system stores the information on the quantity of emergency supplies reserved for each well.

[0016] Optionally, the road information module stores the information on arterial roads and exploration access roads.

[0017] Optionally, the location information stored in the location display module is in longitude and latitude or geodetic coordinates, and the location information is displayed in the map system by means of plane projection.

[0018] Optionally, the main interface system further includes an emergency response visualization system, which can display the movement trajectory of emergency vehicles on the regional map in real time.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By designing a warning and monitoring algorithm and based on the real-time data of the wellbore, the present invention monitors the real-time changes in the wellbore pressure, can monitor and prevent changes in well control, and prevents out-of-control well control by automatically monitoring and sending warning messages.

[0021] Furthermore, the present invention can achieve the visualization of emergency resources, monitor the positions of emergency teams, experts, equipment, materials, and vehicles. Through emergency response visualization, it can monitor the site, real-time parameters of construction operations, real-time parameters of equipment operation, and the movement trajectory of emergency vehicles in real time. Thus, an emergency resource allocation list can be quickly generated.

[0022] The present invention can improve the level of well control risk prediction, use real-time data for risk identification and overflow alarm, change the well control risk from a passive type after the event to a pre-judgment type before the event. At the same time, it can improve the guarantee ability of emergency resources, monitor the dynamics of teams, personnel, materials, and equipment resources in real time, and enhance the level of emergency resource guarantee. It can enhance the emergency response ability, and improve the emergency response level by means of integrated cooperation between the base and the site, online resource tracking, rapid resource allocation, and optimized emergency plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure of the present invention in any way.

[0024] In the drawings:

[0025] Figure 1 This is the interface of the emergency resource visualization system of the present invention;

[0026] Figure 2 This is the interface of the emergency response visualization system of the present invention;

[0027] Figure 3 This is the interface for monitoring the kill well construction of the present invention;

[0028] Figure 4 This is the interface of the well control equipment file of the present invention;

[0029] Figure 5 This is the interface of the dynamic well control materials of the present invention;

[0030] Figure 6 This is the interface for monitoring the operation of the remote control console of the present invention;

[0031] Figure 7 This is the early warning monitoring interface of the present invention;

[0032] Figure 8 This is the implementation idea diagram for overflow early warning of the present invention;

[0033] Figure 9 This is the real-time detection idea diagram of the remote control console of the present invention. Detailed implementation manners

[0034] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim listing several means, several of these means can be embodied by the same item of hardware. The use of the words first, second, third, etc. does not denote any order. These words can be interpreted as names.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0038] The present invention will be described in detail below with reference to the accompanying drawings.

[0039] An emergency disposal system for well control emergencies of the present invention includes: an overflow warning system, a remote console real-time monitoring system, and a main interface system. Among them, the overflow warning system includes an overflow classification and analysis system and an overflow alarm system.

[0040] The overflow classification and analysis system includes a system for analyzing abnormal high-pressure formations encountered during drilling and a system for analyzing the disappearance of annulus pressure loss; the system for analyzing abnormal high-pressure formations encountered during drilling includes a dc index calculation system and a temperature gradient method calculation system. The dc index calculation system can judge abnormal formation pressure by comparing with the dc index pressure trend line in the normal section, and the temperature gradient method calculation system can judge the abnormal high-pressure transition zone according to the change of temperature gradient. When either the dc index calculation system or the temperature gradient method calculation system exceeds the critical value, an overflow warning is issued.

[0041] The annulus pressure loss disappearance analysis system includes a reflux monitoring and analysis system and a connection gas analysis system. The reflux monitoring and analysis system can compare the liquid volume in the pump-off state with the liquid volume before the pump is stopped, and the connection gas analysis system can compare the peak gas pressure in the pump-off state with the reference gas pressure. When either the reflux monitoring and analysis system or the connection gas analysis system exceeds the critical value, an overflow warning is issued; the overflow warning system can send the overflow warning information to the overflow alarm system. The overflow alarm system makes an overflow alarm judgment manually according to the overflow warning information and sends the overflow alarm information.

[0042] The overflow warning system can automatically and real-time monitor the drilling and well completion operation process for 24 hours, analyze in real time the possibility of abnormal overflow in the lower formation of the well being drilled, and the monitoring engineer receives the overflow abnormal warning information, views the real-time data and curves, and jointly analyzes and confirms the possibility of overflow with the on-site engineering supervisor.

[0043] The overflow warning information is divided into three levels: likely to occur, highly likely to occur, and about to occur. The warning information at the three levels is first pushed to the monitoring engineer in the operation center of the exploration company. The warning information of likely to occur is pushed to the monitoring engineer, the information of highly likely to occur is pushed to the monitoring engineer and technical experts, and the information of about to occur is pushed to the monitoring engineer, the leading supervisors of the two business departments, and technical experts. The pushed content includes the text description of the warning information, the real-time data and real-time curves before and after the warning time, and the implementation idea is as Figure 8 shown.

[0044] The real-time monitoring system of the remote control console includes a pressure sensor, a position sensor, and a liquid level sensor. The pressure sensor can collect the air source pressure, power supply pressure, manifold pressure, annular pressure, and accumulator pressure information. The position sensor can collect the handle position information. The liquid level sensor can collect the fuel tank liquid level information. Among them, when any value of the air source pressure, power supply pressure, manifold pressure, annular pressure, and accumulator pressure exceeds the threshold, an abnormal alarm is given. When the fuel tank liquid level exceeds the lower limit of the liquid level scale, an abnormal alarm is given. When the handle position is judged to be abnormal by the monitoring personnel, an abnormal alarm is given. The threshold of the air source pressure is 0.65 Mpa to 1.3 Mpa, the threshold of the power supply pressure is 0.65 Mpa to 1.3 Mpa, the threshold of the manifold pressure is 9.8 Mpa to 11.2 Mpa, the threshold of the annular pressure is 8.5 Mpa to 10.5 Mpa, and the threshold of the accumulator pressure is 18.5 Mpa to 21 Mpa.

[0045] By obtaining the pressure parameters, oil quantity, handle violation, violation operation images, and remote control console panel model data of the remote control console, the real-time state of the remote control console is monitored, and an alarm prompt is given for the abnormality of the remote control console, ensuring that the console is always in a normal state and can complete the well killing operation at any time, providing support for refined well control management. The abnormal alarm information of the remote control console is pushed to the monitoring engineer and the leading supervisors of the two business departments.

[0046] The pushed content includes the text description of the alarm information, the real-time data, video data, and real-time curves before and after the alarm time. As Figure 9 shown.

[0047] The main interface system includes: a map system, an emergency resource visualization system, an emergency response visualization system, and a well control dynamic system.

[0048] The main interface system can display the abnormal alarm information of the remote console real-time monitoring system, the overflow warning information and overflow alarm information of the overflow warning system. The map system can display the regional map.

[0049] The emergency resource visualization system includes a location display module, a road information module, a supervision dynamic module, and an expert dynamic list module.

[0050] The location information in the location display module and the road information module can both be displayed on the regional map of the map system. The location display module includes a well location module, a mud station location module, an emergency team location module, and a hospital location module. The road information module stores the main road information and exploration access road information. The expert dynamic list module can display expert information. The supervision dynamic module can display the on-site supervisor information of each well location, as Figure 1 shown.

[0051] Optionally, the well location module in the emergency resource visualization system stores the single-well emergency material reserve quantity information.

[0052] Optionally, the location information stored in the location display module is longitude and latitude or geodetic coordinates, and the location information is displayed in the map system by means of plane projection.

[0053] The emergency response visualization system includes a vehicle location information module, a surrounding resource query module, a well operation condition module, an emergency contact list module, and a mud logging engineering real-time parameter module. The surrounding resource query module can query the well operation conditions and mud logging engineering real-time parameters in the area by generating a buffer zone. The vehicle location information module can display the movement track of the emergency vehicle on the regional map in real time.

[0054] The well operation condition module can display the single-well basic information, construction overview, drill string assembly, well structure, wellhead device, personnel and materials, virtual reality materials, accidents and complexities, and kill operation construction data, providing basic data support for emergency rescue, as Figure 3 shown.

[0055] The well control dynamic system includes a well control data module and a well control equipment module.

[0056] The well control data module can display data such as single-well well control management dynamics, blowout prevention drills, target layer well weekly reports, and records of drilling into oil and gas layers, providing support for daily well control management and emergency rescue. The well control equipment module can display the general situation of well control equipment and the dynamics of well control equipment. The general situation of the well control equipment includes the equipment's use in the well, workshop maintenance, on-site well control service conditions, equipment three-dimensional ledger, equipment file details, as well as equipment resource dynamic analysis and inventory dynamic analysis information, such as Figure 4 、Figure 5 As shown. The dynamic well control equipment includes well control logs, warning information, equipment lists, wellhead assemblies, pressure test records, real-time status, inspection reports, installation and pressure test violation records, one-key alarm information, ground rupture test and low pump stroke test information, providing a basis for equipment failure analysis, such as Figure 6 as shown Figure 7 as shown

[0057] Those skilled in the art of this technology should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code

[0058] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks

[0059] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implement the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks

[0060] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks

[0061] Unless otherwise specified, the working methods or control methods involved in the above embodiments are all conventional working methods or control methods in the art.

[0062] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. An emergency response system for well control emergencies, characterized in that, Including: An overflow warning system, which includes an overflow classification and analysis system and an overflow alarm system; Among them, the overflow classification and analysis system includes a system for analyzing abnormal high-pressure formations encountered during drilling and a system for analyzing the disappearance of annulus pressure loss; the system for analyzing abnormal high-pressure formations encountered during drilling includes a dc exponent calculation system and a temperature gradient method calculation system. The dc exponent calculation system can judge abnormal formation pressure by comparing with the dc exponent pressure trend line in the normal section, and the temperature gradient method calculation system can judge the abnormal high-pressure transition zone according to the change of temperature gradient. When any one of the dc exponent calculation system or the temperature gradient method calculation system exceeds the critical value, an overflow warning is issued; the annulus pressure loss disappearance analysis system includes a reflux monitoring and analysis system and a connection gas analysis system. The reflux monitoring and analysis system can compare the liquid volume in the pump-off state with the liquid volume before the pump is stopped, and the connection gas analysis system can compare the peak gas pressure in the pump-off state with the reference gas pressure. When any one of the reflux monitoring and analysis system or the connection gas analysis system exceeds the critical value, an overflow warning is issued; The overflow warning system can send the overflow warning information to the overflow alarm system.

2. The emergency response system for well control emergencies according to claim 1, wherein, The overflow alarm system makes an overflow alarm judgment manually according to the overflow warning information and sends the overflow alarm information.

3. The emergency response system for well control emergencies according to claim 1, wherein The well control emergency response system also includes a remote console real-time monitoring system, which includes a pressure sensor, a position sensor and a liquid level sensor. The pressure sensor can collect information on gas source pressure, power supply pressure, manifold pressure, annular pressure and accumulator pressure. The position sensor can collect handle position information, and the liquid level sensor can collect fuel tank liquid level information; among them, when any one of the gas source pressure, power supply pressure, manifold pressure, annular pressure and accumulator pressure exceeds the threshold value, an abnormal alarm is issued; when the fuel tank liquid level exceeds the lower limit of the page scale, an abnormal alarm is issued; when the handle position is judged to be abnormal by the monitoring personnel, an abnormal alarm is issued.

4. The emergency response system for well control emergencies according to claim 3, wherein The threshold value of the gas source pressure is 0.65 Mpa to 1.3 Mpa, the threshold value of the power supply pressure is 0.65 Mpa to 1.3 Mpa, the threshold value of the manifold pressure is 9.8 Mpa to 11.2 Mpa, the threshold value of the annular pressure is 8.5 Mpa to 10.5 Mpa, and the threshold value of the accumulator pressure is 18.5 Mpa to 21 Mpa.

5. The emergency response system for well control emergencies according to claim 3, characterized in that, The well control emergency response system also includes a main interface system, which can display the abnormal alarm information of the remote console real-time monitoring system, the overflow warning information and the overflow alarm information of the overflow warning system.

6. The emergency response system for well control emergencies according to claim 5, wherein, The main interface system includes a map system and an emergency resource visualization system. The map system can display the regional map; the emergency resource visualization system includes a position display module and a road information module; the position information in the position display module and the road information module can be displayed on the regional map of the map system. The position display module includes a well position module, a mud station position module, an emergency team position module and a hospital position module.

7. The emergency response system for well control emergencies according to claim 6, characterized in that, The well position module in the emergency resource visualization system stores the information on the quantity of emergency supplies reserved for each well.

8. An emergency response system for well control emergencies according to claim 6, characterized in that, The road information module stores the information on arterial roads and exploration access roads.

9. The emergency response system for well control emergencies according to claim 6, wherein, The location information stored in the location display module is longitude and latitude or geodetic coordinates, and the location information is displayed in the map system by means of planar projection.

10. The emergency response system for well control emergencies according to claim 6, characterized in that, The main interface system further includes an emergency response visualization system, which can display the movement trajectory of emergency vehicles on the regional map in real time.

Images