Safety monitoring and management system for gas well pressure operation

Abstract

The present invention discloses a safety monitoring and management system for pressurized gas well operations, relates to the technical field of safety monitoring and management, and solves the technical problem in the prior art that, when performing pressurized operations, it cannot be guaranteed that the environmental fluctuations in the current pressurized area will not affect the pressurized operations. Specifically, a pressurized state monitoring unit presets pressure fluctuations according to the position characteristics of the pressure sensor, obtains different types of position marks, acquires pressure floating information and pressure control change information, and infers whether the pressurized state monitoring is normal based on information comparison. If it is abnormal, the pressurized operation will not be performed, and if it is normal, the pressurized operation will be performed. The operation execution monitoring unit performs pressurized operation execution monitoring on the pressurized area, collects operation execution monitoring information based on the pressurized operation execution monitoring, and obtains the pressurized operation execution monitoring coefficient through formula calculation, and infers whether the execution monitoring is normal based on the coefficient comparison.

Description

Technical Field

[0001] The present invention relates to the technical field of safety monitoring and management, and in particular to a safety monitoring and management system for gas well pressurized operations. Background Art

[0002] Monitoring the pressurized environment during pressurized operations is an important part of ensuring operational safety. Real-time monitoring of the pressurized environment can promptly identify potential dangers and enable appropriate measures to be taken to ensure the safety of operators and equipment.

[0003] However, in the existing technology, it is impossible to conduct safety monitoring of the pressurized state of the pressurized area before performing the pressurized operation, so that it is impossible to ensure that the current environment meets the requirements for the pressurized operation. Secondly, when the pressurized operation is performed, it is impossible to ensure that the environmental fluctuations in the current pressurized area will not affect the pressurized operation. In addition, it is impossible to perform risk monitoring on the pressurized operation, resulting in a decrease in the efficiency of the pressurized operation.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned problems and to propose a safety monitoring and management system for gas well pressurized operations.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A safety monitoring and management system for pressurized gas well operations includes a safety monitoring and management platform, wherein the safety monitoring and management platform is communicatively connected to a pressurized state monitoring unit, an operation execution monitoring unit, and an operation risk monitoring unit;

[0008] The pressurized state monitoring unit seals the pressurized area underground and marks it as a pressurized area, and sets pressure sensors at the wellhead position of the pressurized area and any area position other than the wellhead position, and presets pressure fluctuations according to the positional characteristics of the pressure sensor position to obtain different types of position marks, obtains pressure floating information and pressure control change information, and infers whether the pressurized state monitoring is normal based on information comparison. If it is abnormal, the pressurized operation will not be performed, and if it is normal, the pressurized operation will be performed. The operation execution monitoring unit performs pressurized operation execution monitoring on the pressurized area, collects operation execution monitoring information based on the pressurized operation execution monitoring, and calculates the pressurized operation execution monitoring coefficient through a formula, and infers whether the execution monitoring is normal based on the coefficient comparison. If it is abnormal, the operation execution control will be performed, and if it is normal, the operation risk monitoring will be performed;

[0009] The operation risk monitoring unit collects underground location risk information and underground time risk information, and infers whether the risk monitoring is performed normally based on information analysis. If it is abnormal, it will be rectified; if it is normal, it will continue to execute.

[0010] As a preferred embodiment of the present invention, the location type marking process is as follows:

[0011] The high depth position of the pressure sensor is marked as a relatively high pressure position relative to the low depth position. At the same time, the low depth position is marked as a relatively low pressure position relative to the high depth position. If the pressure value affects a large number of parameters or the parameter adjustment and control efficiency is low, the corresponding position will be marked as a high floating position. Conversely, if the pressure value affects a small number of parameters and the parameter adjustment and control efficiency is high, the corresponding position will be marked as a low floating position.

[0012] As a preferred embodiment of the present invention, the pressure floating information and the pressure control change information are respectively the speed value ratio of the decreasing speed of the pressure value floating duration at the high floating position in the pressurized area to the frequency acceleration speed peak value of the pressure value floating frequency at the low floating position, and the speed value ratio of the decreasing speed of the pressure value floating duration at the high floating position in the pressurized area to the frequency acceleration speed peak value of the pressure value floating frequency at the low floating position.

[0013] As a preferred embodiment of the present invention, if the pressure floating information exceeds the cumulative span and threshold, or the pressure control change information does not exceed the speed value ratio threshold, it is inferred that the pressure status monitoring of the pressurized operation area is abnormal; if the pressure floating information does not exceed the cumulative span and threshold, and the pressure control change information exceeds the speed value ratio threshold, it is inferred that the pressure status monitoring of the pressurized operation area is normal.

[0014] As a preferred embodiment of the present invention, the operation execution monitoring information includes the reciprocating numerical fluctuation of the smoothness of the oil and gas flow in the pressurized area corresponding to the starting time of the operation period and the current system time, the degree of damage to the oil well at any position in the operation area corresponding to different operation times within the operation period, and the overlapping duration of the pressurized operation execution period in the pressurized area and the permeability decrease period of the corresponding oil and gas layer in the pressurized area, and is labeled SZF, SSD, and CDS respectively.

[0015] As a preferred embodiment of the present invention, the formula is:

[0016] , where fvz1, fvz2 and fvz3 are preset proportional coefficients respectively.

[0017] As a preferred embodiment of the present invention, if the monitoring coefficient of the pressurized operation execution exceeds the monitoring coefficient threshold, it is inferred that the operation execution monitoring is abnormal; if the monitoring coefficient of the pressurized operation execution does not exceed the monitoring coefficient threshold, it is inferred that the operation execution monitoring is normal.

[0018] As a preferred embodiment of the present invention, the downhole position risk information is the distance deviation value between the maximum lowering distance of the tubing in the gas well and the actual lowering distance during the execution of pressurized operations in the pressurized area, and the corresponding span and value of the distance deviation increase span between the real-time path position of the tubing in the gas well and the preset path position; the downhole time risk information is the time delay value corresponding to the current moment of the real-time path position of the tubing at the high-risk position of the downhole path during the execution of pressurized operations and the moment when the path position is monitored.

[0019] As a preferred embodiment of the present invention, if the downhole time risk information exceeds the span and value threshold, or the downhole time risk information exceeds the time delay value threshold, it is inferred that the operation risk monitoring of the current pressurized area is abnormal; if the downhole time risk information does not exceed the span and value threshold, and the downhole time risk information does not exceed the time delay value threshold, it is inferred that the operation risk monitoring of the current pressurized area is normal.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the pressure state of the downhole pressurized operation area is monitored to ensure whether the current downhole pressurized operation area is capable of performing pressurized operation, and to ensure that the downhole safety during the pressurized operation meets the actual needs, thereby avoiding the imbalance of the gas well caused by the abnormal pressure state of the pressurized operation, which increases the safety hazards of the downhole operation. At the same time, the pressure state monitoring can make accurate decisions on the pressurized operation, ensure the efficiency of the pressurized operation and the safety performance of the pressurized operation, and promptly terminate the operation when the pressure state is different, thereby reducing the impact of pressure fluctuations;

[0022] Monitor the execution of pressurized operations in the pressurized area. During the pressurized operation, monitor the execution of operations in the pressurized area in the gas well to infer whether the state changes of the pressurized area during the pressurized operation are safe, and evaluate the real-time status of the entire gas well area to avoid abnormal pressure balance in the gas well during the pressurized operation, which may lead to safety hazards in the entire gas well area. This will facilitate timely discovery of safety hazards and timely adjustment and deployment of pressurized operations.

[0023] 2. In the present invention, real-time pressure operation risk monitoring is performed on the pressurized area. Through risk monitoring, it is inferred whether the current pressure operation affects the overall pressure state of the pressurized area, so as to avoid the pressure operation risk causing state changes in the pressurized area, thereby causing unnecessary safety hazards and reducing the risk of pressurized operation; environmental safety warnings are performed on the pressurized area where the pressurized operation is performed. When the pressure operation safety monitoring in the gas well is normal, the environmental safety warning of the pressurized area is used to ensure the safety of the pressurized operation execution area in real time, avoid the external environment affecting the inefficiency of the pressurized operation, which leads to a reduction in the safety performance of the pressurized area, and easily cause the risk of the pressurized area to be misjudged as the impact of the pressurized operation, resulting in an increase in unknown factors and unnecessary waste in adjusting the pressurized operation mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a principle block diagram of the first embodiment of the present invention;

[0026] Figure 2 This is a principle block diagram of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Example 1

[0030] This example performs safety monitoring on gas well pressurized operations. Figure 1 As shown, the safety monitoring and management system for pressurized gas well operations includes a safety monitoring and management platform, wherein the safety monitoring and management platform is communicatively connected to a pressurized state monitoring unit, an operation execution monitoring unit, and an operation risk monitoring unit;

[0031] When a gas well needs to be operated downhole, under the condition that there is pressure in the gas well, forced operation is performed without releasing blowout or killing the well. During the operation, there is no need to kill the well, thus avoiding the damage of killing fluid to the reservoir, which can protect the gas well production capacity to the greatest extent, eliminating the steps of killing well and draining fluid, shortening the operation time and improving the operation efficiency. At the same time, operating under pressure can avoid safety accidents such as blowout caused by improper killing well.

[0032] When the gas well is under pressure, it is necessary to keep the gas well in a sealed state. This system intervenes and after the safety monitoring management platform receives the downhole operation instruction, it generates a pressure state monitoring signal and sends it to the pressure state monitoring unit.

[0033] After receiving the pressure state monitoring signal, the pressure state monitoring unit monitors the pressure state of the downhole pressure operation area to ensure whether the current downhole pressure operation area is capable of pressure operation and to ensure that the downhole safety meets the actual needs when the pressure operation is performed, thereby avoiding the imbalance of the gas well caused by the abnormal pressure state of the pressure operation and the increase of the safety hazards of the downhole operation. At the same time, the pressure state monitoring unit can make accurate decisions on the pressure operation, ensure the efficiency of the pressure operation and the safety performance of the pressure operation, and terminate the operation in time when the pressure state is different to reduce the impact of pressure fluctuation.

[0034] The downhole pressurized area is sealed and marked as a pressurized area, and pressure sensors are set at the wellhead position of the pressurized area and at any area position other than the wellhead position, and the positions of the set pressure sensors are spaced apart and are not on the same horizontal line; the pressure fluctuation is preset according to the positional characteristics of the pressure sensor, specifically, the high-depth position of the pressure sensor is marked as a relatively high-pressure position relative to the low-depth position, and at the same time, the low-depth position is marked as a relatively low-pressure position relative to the high-depth position; it can be understood that different well depths correspond to different pressure values in the prior art, and the pressure floating is preset according to the different positions of the pressure sensor, specifically, the pressure numerical influencing parameters and the corresponding influencing parameter adjustment and control efficiency at different positions are different, then the number of pressure numerical influencing parameters is large or the influencing parameter adjustment and control efficiency is low, the corresponding position is marked as a high-floating position, conversely, the number of pressure numerical influencing parameters is small and the influencing parameter adjustment and control efficiency is high, the corresponding position is marked as a low-floating position;

[0035] When a pressurized area is obtained as a pending area for downhole operations, the cumulative spans of the corresponding values of the pressure peak rise span at the relatively high-pressure position and the pressure floating speed rise span at the relatively low-pressure position within the pressurized area are calculated. The influence of inconsistent units is not considered, and only the influence of value fluctuation is analyzed. That is, the floating values are span-collected to infer the pressure fluctuation changes at each position in the current pressurized area. At the same time, the speed ratio of the pressure value floating duration decrease speed at the high floating position in the pressurized area to the frequency acceleration speed peak of the pressure value floating frequency at the low floating position is obtained. When the pressurized area is used as a pending area for downhole operations, the cumulative spans of the pressure peak rise span at the relatively high-pressure position in the pressurized area and the pressure floating speed rise span at the relatively low-pressure position, and the speed ratio of the pressure value floating duration decrease speed at the high floating position in the pressurized area to the frequency acceleration speed peak of the pressure value floating frequency at the low floating position are marked as pressure fluctuation information and pressure control change information, respectively, and compared with the cumulative span, threshold, and speed ratio threshold, respectively:

[0036] If the sum of the corresponding cumulative spans of the pressure peak rising span at the relatively high-pressure position in the pressurized area and the corresponding cumulative span of the pressure floating speed rising span at the relatively low-pressure position exceeds the cumulative span and the threshold, or the speed ratio of the corresponding speed peak value of the pressure value floating duration at the high floating position in the pressurized area and the frequency acceleration speed of the pressure value floating frequency at the low floating position does not exceed the speed value ratio threshold, it is inferred that the pressurized state monitoring of the pressurized operation area is abnormal, and a state risk signal is generated and sent to the safety monitoring management platform. After receiving the state risk signal, the safety monitoring management platform adjusts the current pressurized area and does not perform pressurized operations at the current moment;

[0037] If the sum of the corresponding cumulative spans of the pressure peak rising span at the relatively high-pressure position and the pressure floating speed rising span at the relatively low-pressure position in the pressurized area does not exceed the cumulative span and the threshold, and the speed ratio of the decreasing speed of the pressure value floating duration at the high floating position in the pressurized area and the frequency acceleration speed peak corresponding to the pressure value floating frequency at the low floating position exceeds the speed value ratio threshold, it is inferred that the pressure status monitoring of the pressurized operation area is normal, and a status safety signal is generated and sent to the safety monitoring management platform;

[0038] After the pressure state monitoring is completed and the monitoring is qualified, the pressure operation is executed, and an operation execution monitoring signal is generated and sent to the operation execution monitoring unit. After receiving the operation execution monitoring signal, the operation execution monitoring unit performs pressure operation execution monitoring on the pressure area. During the pressure operation, the pressure area in the gas well is monitored to infer whether the state change of the pressure area during the pressure operation is safe, and to evaluate the real-time state of the entire gas well area. This avoids abnormal pressure balance in the gas well during the pressure operation, which may lead to safety hazards in the entire gas well area. This facilitates timely discovery of safety hazards and timely adjustment and deployment of pressure operations.

[0039] The execution period of the pressurized operation in the pressurized area is obtained and marked as the operation period. The area where the pressurized operation is performed in the pressurized area is marked as the operation area. The reciprocating numerical fluctuation of the oil and gas flow smoothness in the pressurized area corresponding to the starting time and the current system time in the operation period is obtained. The oil and gas flow smoothness is expressed as the sum of the floating span average of the oil and gas transportation speed in the current gas well when different oil and gas transportation rates are used for transportation and the corresponding span of the floating span value of the instantaneous drop in speed during the transportation process. The reciprocating numerical fluctuation of the oil and gas flow smoothness in the pressurized area corresponding to the starting time and the current system time in the operation period is marked as SZF.

[0040] The oil well damage degree at any location in the operating area at different operating times during the operating period is obtained. The oil well damage degree is expressed as the pressure deviation value at any location in the operating area corresponding to the same task delivery volume under the same wall thickness. The larger the value, the greater the oil well damage and the greater the pressure impact. The oil well damage degree at any location in the operating area at different operating times during the operating period is marked as SSD.

[0041] As the operation period continues to increase in the operation area, the overlapping time between the pressurized operation execution period in the pressurized area and the corresponding oil and gas layer permeability reduction period in the pressurized area is obtained, and the overlapping time between the pressurized operation execution period in the pressurized area and the corresponding oil and gas layer permeability reduction period in the pressurized area is marked as CDS;

[0042] The above collected data are uniformly marked as operation execution monitoring information, and substituted into the formula to obtain the pressure operation execution monitoring coefficient in the pressure area, where the formula is: , where fvz1, fvz2 and fvz3 are the preset proportional coefficients of the reciprocating value floating amount, oil well damage degree and overlap time respectively, and ZX represents the pressure operation execution monitoring coefficient;

[0043] Compare the monitoring coefficient for pressurized operation execution in the pressurized area with the monitoring coefficient threshold:

[0044] If the monitoring coefficient of pressurized operation execution in the pressurized area exceeds the monitoring coefficient threshold, it is inferred that the operation execution monitoring is abnormal during the pressurized operation in the pressurized area, and a regional danger signal is generated and sent to the safety monitoring management platform. After receiving the regional danger signal, the safety monitoring management platform will suspend the pressurized operation and set a monitoring period for each location in the pressurized area. During the monitoring period, the pressurized area maintenance monitoring will be carried out, and the pressurized operation will continue if it is qualified. Otherwise, it will be stopped and the pressurized operation time screening will be carried out in the next operation cycle;

[0045] If the monitoring coefficient of pressurized operation execution in the pressurized area does not exceed the monitoring coefficient threshold, it is inferred that the operation execution monitoring is normal during the pressurized operation in the pressurized area, and a regional safety signal is generated and sent to the safety monitoring management platform;

[0046] After completing the operation execution monitoring in the pressurized area, an operation risk monitoring signal is generated and sent to the operation risk monitoring unit. After receiving the operation risk monitoring signal, the operation risk monitoring unit performs real-time pressurized operation risk monitoring on the pressurized area. Through risk monitoring, it is inferred whether the current pressurized operation affects the overall pressure state of the pressurized area, thereby avoiding the pressurized operation risk causing state changes in the pressurized area, thereby causing unnecessary safety hazards, and reducing the risk of pressurized operation;

[0047] Obtain the distance deviation between the maximum possible lowering distance of the tubing string in the gas well and the actual lowering distance during the pressurized operation in the pressurized area. At the same time, obtain the distance deviation increase span between the real-time path position of the tubing string in the gas well in the pressurized area and the preset path position. The sum of the distance deviation value and the distance deviation increase span is calculated and marked as downhole position risk information.

[0048] Obtain the time delay value corresponding to the current real-time path position of the inner tubing string passing through a high-risk position in the well during the pressurized operation and the time when the path position is monitored, where the high-risk position is represented by a deviated well position, a horizontal well position, or a position in a confined space within the pressurized area; and mark the time delay value corresponding to the current real-time path position of the inner tubing string passing through the high-risk position in the well during the pressurized operation and the time when the path position is monitored as the well duration risk information;

[0049] And compared with the span value threshold and duration delay value threshold respectively:

[0050] If the sum of the distance deviation value and the distance deviation increase span exceeds the span sum threshold, or the time delay value corresponding to the current moment when the inner string passes the high-risk position in the well during the pressurized operation and the moment when the path position is monitored exceeds the time delay threshold, it is inferred that the operation risk monitoring of the current pressurized area is abnormal, and an operation risk increase signal is generated and sent to the safety monitoring management platform. After receiving the operation risk increase signal, the safety monitoring management platform adjusts the execution time of the pressurized operation in the pressurized area and adjusts the execution task volume, and terminates the operation if necessary;

[0051] If the sum of the distance deviation value and the distance deviation increase span does not exceed the span sum threshold, and the time delay value corresponding to the current moment when the inner string passes the high-risk position in the well during the pressurized operation and the moment when the path position is monitored does not exceed the time delay threshold, it is inferred that the operation risk monitoring of the current pressurized area is normal, and an operation risk stabilization signal is generated and sent to the safety monitoring management platform. After receiving the operation risk stabilization signal, the safety monitoring management platform continuously monitors the pressurized area.

[0052] Example 2

[0053] The previous embodiment performs safety monitoring on the gas well pressure operation. This embodiment is based on the previous embodiment. Figure 2 As shown, an environmental safety early warning unit is added. After the operation risk monitoring is completed and qualified, an environmental safety early warning signal is generated and sent to the environmental safety early warning unit. After receiving the environmental safety early warning signal, the environmental safety early warning unit issues an environmental safety early warning to the pressurized area where the pressurized operation is performed. When the safety monitoring of the pressurized operation in the gas well is normal, the environmental safety early warning of the pressurized area is used to ensure the safety of the pressurized operation execution area in real time, avoid the inefficiency of the pressurized operation caused by the external environment, so as to reduce the safety performance of the pressurized area, and easily cause the risk of the pressurized area to be misjudged as the impact of the pressurized operation, resulting in an increase in unknown factors and unnecessary waste in adjusting the pressurized operation mode;

[0054] Obtain the sum of the speed influence span value of the ambient temperature fluctuation speed at the location of any component of the operation execution equipment during the ambient temperature fluctuation stage when the pressurized operation is performed in the pressurized area and the speed span value corresponding to the floating speed span value of the component operation parameter caused by the ambient temperature trend at the location of the corresponding component, wherein the component operation parameter is the parameter that acts on the component itself according to the component type, such as the angle adjustment mechanism, the corresponding operation parameter is the angle adjustment value, and mark the sum of the speed influence span value of the ambient temperature fluctuation speed at the location of any component of the operation execution equipment during the ambient temperature fluctuation stage when the pressurized operation is performed in the pressurized area and the speed span value corresponding to the floating speed span value of the component operation parameter caused by the ambient temperature trend at the location of the corresponding component as the environmental speed influence parameter;

[0055] Obtain the numerical ratio of the continuous rising span value of any environmental parameter in the pressurized area during the period of increasing the operating time of the operation execution equipment when there is no parameter fluctuation in the pressurized area environment to the interval value of the corresponding environmental parameter from the set red line value, and mark the numerical ratio of the continuous rising span value of any environmental parameter in the pressurized area during the period of increasing the operating time of the operation execution equipment when there is no parameter fluctuation in the pressurized area environment to the interval value of the corresponding environmental parameter from the set red line value as the environmental equipment influencing parameter, where the numerical ratio is expressed as the ratio of the corresponding numerical values of the two collected data, without considering the influence of inconsistent units, and only collecting and analyzing the influence of the numerical fluctuation of the two data themselves;

[0056] The environmental speed impact parameter and the environmental equipment impact parameter are compared with the speed span sum value threshold and the span speed value ratio threshold respectively:

[0057] If the environmental speed influencing parameter exceeds the speed span and value threshold, or the environmental equipment influencing parameter exceeds the span speed value ratio threshold, it is inferred that the environmental safety monitoring in the pressurized area is abnormal, and an environmental warning signal is generated and sent to the safety monitoring management platform. After receiving the environmental warning signal, the safety monitoring management platform performs environmental parameter detection on the pressurized area, monitors the floating trends of environmental parameters and equipment operating parameters in real time, and makes timely adjustments. Environmental parameters are expressed as parameters such as temperature and humidity;

[0058] If the environmental speed impact parameter does not exceed the speed span and value threshold, and the environmental equipment impact parameter does not exceed the span-speed value ratio threshold, it is inferred that the environmental safety monitoring in the pressurized area is normal, and an environmental safety signal is generated and sent to the safety monitoring management platform;

[0059] The above formulas are obtained by collecting a large amount of data and performing software simulation to select a formula close to the actual value. The coefficients in the formula are set by those skilled in the art according to actual conditions;

[0060] When the present invention is in use, the pressurized state monitoring unit seals the underground pressurized area and marks it as a pressurized area, and sets pressure sensors at the wellhead position of the pressurized area and any area position other than the wellhead position, and presets pressure fluctuations according to the position characteristics of the position of the pressure sensor to obtain different types of position marks, obtain pressure floating information and pressure control change information, and infer whether the pressurized state monitoring is normal based on information comparison. If it is abnormal, the pressurized operation will not be performed, and if it is normal, the pressurized operation will be performed, and the operation execution monitoring unit performs pressurized operation execution monitoring on the pressurized area, collects operation execution monitoring information based on the pressurized operation execution monitoring, and obtains the pressurized operation execution monitoring coefficient through formula calculation, and infers whether the execution monitoring is normal based on coefficient comparison, and performs operation execution regulation if it is abnormal, and performs operation risk monitoring if it is normal; the operation risk monitoring unit collects underground position risk information and underground time risk information, and infers whether the execution risk monitoring is normal based on information analysis, and performs execution rectification if it is abnormal, and continues to perform execution if it is normal.

[0061] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A safety monitoring and management system for gas well pressure operation, characterized in that: It includes a safety monitoring and management platform, wherein the safety monitoring and management platform is communicatively connected with a pressure state monitoring unit, an operation execution monitoring unit, and an operation risk monitoring unit; The pressurized state monitoring unit seals the pressurized area underground and marks it as a pressurized area, and sets pressure sensors at the wellhead position of the pressurized area and any area position other than the wellhead position, and presets pressure fluctuations according to the positional characteristics of the pressure sensor position to obtain different types of position marks, obtains pressure floating information and pressure control change information, and infers whether the pressurized state monitoring is normal based on information comparison. If it is abnormal, the pressurized operation will not be performed, and if it is normal, the pressurized operation will be performed. The operation execution monitoring unit performs pressurized operation execution monitoring on the pressurized area, collects operation execution monitoring information based on the pressurized operation execution monitoring, and calculates the pressurized operation execution monitoring coefficient through a formula, and infers whether the execution monitoring is normal based on the coefficient comparison. If it is abnormal, the operation execution control will be performed, and if it is normal, the operation risk monitoring will be performed; The pressure floating information and the pressure control change information are respectively the speed ratio of the decreasing speed of the pressure value floating duration at the high floating position in the pressurized area to the frequency acceleration speed peak value of the pressure value floating frequency at the low floating position, and the speed ratio of the decreasing speed of the pressure value floating duration at the high floating position in the pressurized area to the frequency acceleration speed peak value of the pressure value floating frequency at the low floating position; The operation execution monitoring information includes the reciprocating numerical fluctuation of the oil and gas flow smoothness in the pressurized area corresponding to the starting time and the current system time within the operation period, the oil well damage degree at any position in the operation area at different operation times within the operation period, and the overlapping time of the pressurized operation execution period and the oil and gas layer permeability decline period in the pressurized area. The information is labeled SZF, SSD, and CDS respectively. The pressurized operation execution monitoring coefficient in the pressurized area is obtained by substituting it into the formula, where the formula is: , where fvz1, fvz2 and fvz3 are respectively proportional to the preset coefficients, and ZX represents the monitoring coefficient for the pressurized operation execution; The operation risk monitoring unit collects downhole position risk information and downhole duration risk information, and infers whether the execution of risk monitoring is normal based on information analysis. If abnormal, the execution is rectified, and if normal, the execution continues. The downhole position risk information is the distance deviation value between the maximum lowering distance of the tubing in the gas well and the actual lowering distance during the execution of pressurized operations in the pressurized area, and the corresponding span and value of the distance deviation increase between the real-time path position of the tubing in the gas well and the preset path position in the pressurized area. The downhole duration risk information is the time delay value corresponding to the current real-time path position of the tubing at a high-risk position in the downhole during the execution of pressurized operations and the moment when the path position is monitored.

2. The safety monitoring and management system for gas well pressurized operation according to claim 1, characterized in that: The location type marking process is as follows: The high depth position of the pressure sensor is marked as a relatively high pressure position relative to the low depth position. At the same time, the low depth position is marked as a relatively low pressure position relative to the high depth position. If the pressure value affects a large number of parameters or the parameter adjustment and control efficiency is low, the corresponding position will be marked as a high floating position. Conversely, if the pressure value affects a small number of parameters and the parameter adjustment and control efficiency is high, the corresponding position will be marked as a low floating position.

3. The safety monitoring and management system for gas well pressurized operation according to claim 2, characterized in that: If the pressure fluctuation information exceeds the cumulative span and threshold, or the pressure control change information does not exceed the speed value ratio threshold, it is inferred that the pressure status monitoring of the pressure operation area is abnormal; If the pressure fluctuation information does not exceed the cumulative span and threshold, and the pressure control change information exceeds the speed value ratio threshold, it is inferred that the pressure status monitoring of the pressurized operation area is normal.

4. The safety monitoring and management system for gas well pressurized operation according to claim 3, characterized in that: If the monitoring coefficient of the pressurized operation execution exceeds the monitoring coefficient threshold, it is inferred that the operation execution monitoring is abnormal; if the monitoring coefficient of the pressurized operation execution does not exceed the monitoring coefficient threshold, it is inferred that the operation execution monitoring is normal.

5. The safety monitoring and management system for gas well pressurized operation according to claim 4, characterized in that: If the downhole time risk information exceeds the span and value threshold, or the downhole time risk information exceeds the time delay value threshold, it is inferred that the operation risk monitoring of the current pressurized area is abnormal; If the downhole time risk information does not exceed the span and value thresholds, and the downhole time risk information does not exceed the time delay value threshold, it is inferred that the operation risk monitoring of the current pressurized area is normal.

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