CN114060000A - Shrinkage data processing method, device, equipment and system for injection-production string - Google Patents
Shrinkage data processing method, device, equipment and system for injection-production string Download PDFInfo
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Abstract
The application provides a shrinkage data processing method, a device, equipment and a system of an injection-production string, which are used for determining shrinkage data of an open hole section through simulation processing. The method comprises the following steps: acquiring stratum crustal stress data of a salt layer where a target pipe column is located, wherein the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage also comprises a metal pipe column connected with the target pipe column; acquiring gas load data of gas transmitted in a target pipe column; after a rock core collected by a salt layer where a target pipe column is located is arranged in a contraction simulation device, the contraction simulation device is triggered to apply acting force matched with formation ground stress data to the rock core, and gas load data matched acting force is applied to the rock core according to a middle hole configured by the target pipe column; monitoring deformation data of the middle hole in the working process of the contraction simulation device; and determining shrinkage data of the target tubular column according to the deformation data.
Description
Technical Field
The application relates to the field of geology, in particular to a shrinkage data processing method, device, equipment and system of an injection-production string.
Background
Natural gas is a clean and environment-friendly high-quality energy, and has the advantages of little carbon dioxide generated during combustion, almost no sulfur dioxide and dust, no toxicity, easy volatilization and the like, so the natural gas is widely applied in the world. The underground gas storage is one of five large links of 'production, transportation, storage, marketing and use' in the natural gas industry, is a natural gas reservoir formed by injecting natural gas into an underground cavern, and is an energy infrastructure facility integrating functions of seasonal peak regulation, accident emergency gas supply, national strategic storage and the like. Compared with exhausted oil-gas reservoir and aquifer reservoir, the salt cavern reservoir has the advantages of high safety, high injection and production efficiency, small using amount of cushion gas, large working gas amount and the like.
In the operation process of the salt cavern gas storage, the connection between a ground pipeline and an underground salt cavern needs to be realized through an injection-production pipe column, in order to prevent the pipe column from being damaged by tension due to the tensile strain at the top of a salt cavity, a section of open hole section with a certain length needs to be reserved at the top of the salt cavity of the injection-production pipe column, namely, the injection-production pipe column comprises a metal pipe column and a pipe column which is directly dug out from a salt stratum, wherein the pipe column is connected with the metal pipe column, and the pipe column part formed by the salt stratum can be called the open hole section.
In the existing research process of the related technology, the inventor finds that the diameter of the open hole section is gradually reduced along with the continuous increase of the accumulated working time, which obviously affects the gas injection and production efficiency of the salt cavern gas storage and seriously affects the normal operation of the salt cavern gas storage.
Disclosure of Invention
The application provides a shrinkage data processing method, a device, equipment and a system of an injection-production string, which are used for determining shrinkage data of an open hole section through simulation processing, so that accurate and effective data support can be provided for work evaluation processing of the injection-production string, and normal operation of a salt cavern gas storage is guaranteed.
In a first aspect, the present application provides a method for processing shrinkage data of an injection-production string, the method including:
acquiring stratum crustal stress data of a salt layer where a target pipe column is located, wherein the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage also comprises a metal pipe column connected with the target pipe column;
acquiring gas load data of gas transmitted in a target pipe column;
after a rock core collected by a salt layer where a target pipe column is located is arranged in a contraction simulation device, the contraction simulation device is triggered to apply acting force matched with formation ground stress data to the rock core, and gas load data matched acting force is applied to the rock core according to a middle hole configured by the target pipe column;
monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and determining shrinkage data of the target tubular column according to the deformation data.
With reference to the first aspect of the present application, in a first possible implementation manner of the first aspect of the present application, the triggering shrinkage simulation apparatus applies an acting force matched with formation ground stress data to the core, and applies an acting force matched with gas load data to the core according to a middle hole configured by a target string, and the triggering shrinkage simulation apparatus specifically includes:
and triggering the shrinkage simulation device to inject gas into the core according to a middle hole configured by the target pipe column so that the middle hole receives a gas load matched with the gas load data.
With reference to the first possible implementation manner of the first aspect of the present application, in a second possible implementation manner of the first aspect of the present application, the triggering and shrinking simulation device injects hydraulic oil into the internal closed cavity, so that the core is subjected to a hydraulic oil load matched with formation ground stress data, and the triggering and shrinking simulation device injects gas into the core according to a middle hole configured by the target tubular column, so that the middle hole is subjected to a gas load matched with gas load data, including:
calculating the hydraulic oil injection amount required by the hydraulic oil load matched with the formation ground stress data of the core according to the volume of a closed cavity in the shrinkage simulation device;
and generating a first control instruction according to the injection amount of the hydraulic oil, sending the first control instruction to a servo hydraulic switch configured in the oil tank, enabling the servo hydraulic switch to adjust the working state, and injecting the hydraulic oil stored in the oil tank into the closed cavity, so that the rock core is subjected to a hydraulic oil load matched with the formation ground stress data.
With reference to the first possible implementation manner of the first aspect of the present application, in a third possible implementation manner of the first aspect of the present application, triggering a shrinkage simulation apparatus to inject gas into a middle hole configured in a core according to a target string, so that the middle hole receives a gas load matched with gas load data, includes:
calculating the gas injection amount required by the gas load of the middle hole matched with the gas load data according to the volume of the middle hole configured by the target pipe column;
and generating a second control instruction according to the gas injection amount, sending the second control instruction to a valve configured in the cylinder, enabling the valve to adjust the working state, and injecting the gas stored in the cylinder into the middle hole, so that the middle hole is subjected to the gas load matched with the gas load data.
With reference to the first aspect of the present application, in a fourth possible implementation manner of the first aspect of the present application, the acquiring formation geostress data of a salt layer where the target string is located includes:
acquiring initial stratum crustal stress data of a salt layer where a target pipe column is located;
on the basis of the initial stratum crustal stress data, combining the predicted stratum crustal stress change to generate target stratum crustal stress data;
acquiring gas load data of a transmission gas in a target tubular string, comprising:
acquiring initial gas load data of gas transmitted in a target pipe column;
target gas load data is generated based on the initial gas load data in combination with the predicted gas load change.
With reference to the first aspect of the present application, in a fifth possible implementation manner of the first aspect of the present application, during a working process of the contraction simulation device, monitoring deformation data of the middle hole includes:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the linear displacement sensor, two ends of the linear displacement sensor are in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the linear displacement sensor to change correspondingly, the linear position sensor records the change of the length of the linear displacement sensor, and a diameter monitoring result is obtained and serves as the deformation data.
With reference to the first aspect of the present application, in a sixth possible implementation manner of the first aspect of the present application, during a working process of the contraction simulation device, monitoring deformation data of the middle hole includes:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the annular displacement sensor, the annular body of the annular displacement sensor is in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the annular displacement sensor to change correspondingly, the annular displacement sensor records the change of the length of the annular displacement sensor, and a perimeter monitoring result is obtained and serves as the deformation data.
In a second aspect, the present application provides a shrinkage data processing apparatus for an injection and production string, the apparatus comprising:
the system comprises an acquisition unit, a storage unit and a control unit, wherein the acquisition unit is used for acquiring stratum crustal stress data of a salt layer where a target pipe column is located, the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage further comprises a metal pipe column connected with the target pipe column;
the acquisition unit is also used for acquiring gas load data of the gas transmitted in the target pipe column;
the triggering unit is used for triggering the shrinkage simulation device to apply acting force matched with stratum crustal stress to the rock core after the rock core collected by the salt layer where the target pipe column is located is arranged in the shrinkage simulation device, and applying acting force matched with gas load data to the rock core according to a middle hole configured by the target pipe column;
the monitoring unit is used for monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and the determining unit is used for determining the shrinkage data of the target tubular column according to the deformation data.
With reference to the second aspect of the present application, in a first possible implementation manner of the second aspect of the present application, the trigger unit is specifically configured to:
and triggering the shrinkage simulation device to inject gas into the core according to a middle hole configured by the target pipe column so that the middle hole receives a gas load matched with the gas load data.
With reference to the first possible implementation manner of the second aspect of the present application, in a second possible implementation manner of the second aspect of the present application, the triggering unit is specifically configured to:
calculating the hydraulic oil injection amount required by the hydraulic oil load matched with the formation ground stress data of the core according to the volume of a closed cavity in the shrinkage simulation device;
and generating a first control instruction according to the injection amount of the hydraulic oil, sending the first control instruction to a servo hydraulic switch configured in the oil tank, enabling the servo hydraulic switch to adjust the working state, and injecting the hydraulic oil stored in the oil tank into the closed cavity, so that the rock core is subjected to a hydraulic oil load matched with the formation ground stress data.
With reference to the first possible implementation manner of the second aspect of the present application, in a third possible implementation manner of the second aspect of the present application, the triggering unit is specifically configured to:
calculating the gas injection amount required by the gas load of the middle hole matched with the gas load data according to the volume of the middle hole configured by the target pipe column;
and generating a second control instruction according to the gas injection amount, sending the second control instruction to a valve configured in the cylinder, enabling the valve to adjust the working state, and injecting the gas stored in the cylinder into the middle hole, so that the middle hole is subjected to the gas load matched with the gas load data.
With reference to the second aspect of the present application, in a fourth possible implementation manner of the second aspect of the present application, the obtaining unit is specifically configured to:
acquiring initial stratum crustal stress data of a salt layer where a target pipe column is located;
on the basis of the initial stratum crustal stress data, combining the predicted stratum crustal stress change to generate target stratum crustal stress data;
acquiring initial gas load data of gas transmitted in a target pipe column;
target gas load data is generated based on the initial gas load data in combination with the predicted gas load change.
With reference to the second aspect of the present application, in a fifth possible implementation manner of the second aspect of the present application, the monitoring unit is specifically configured to:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the linear displacement sensor, two ends of the linear displacement sensor are in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the linear displacement sensor to change correspondingly, the linear position sensor records the change of the length of the linear displacement sensor, and a diameter monitoring result is obtained and serves as the deformation data.
With reference to the second aspect of the present application, in a sixth possible implementation manner of the second aspect of the present application, the monitoring unit is specifically configured to:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the annular displacement sensor, the annular body of the annular displacement sensor is in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the annular displacement sensor to change correspondingly, the annular displacement sensor records the change of the length of the annular displacement sensor, and a perimeter monitoring result is obtained and serves as the deformation data.
In a third aspect, the present application provides a shrinkage data processing apparatus for an injection-production string, including a processor and a memory, where the memory stores a computer program, and the processor executes the method provided in the first aspect of the present application or any one of the possible implementation manners of the first aspect of the present application when calling the computer program in the memory.
In a fourth aspect, the present application provides a shrinkage data processing system for an injection and production string, the system comprising a shrinkage simulation apparatus and a shrinkage data processing device for an injection and production string as provided in the third aspect of the present application.
In a fifth aspect, the present application provides a computer-readable storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the method provided in the first aspect of the present application or any one of the possible implementations of the first aspect of the present application.
From the above, the present application has the following advantageous effects:
for the shrinkage prediction of the 'open hole section', the method obtains stratum ground stress data of a salt layer where a target pipe column, namely the 'open hole section', is located and gas load data of transmission gas of the salt layer under the condition that a shrinkage simulation device is configured, triggers acting force corresponding to a rock core collected to the 'open hole section' by the shrinkage simulation device based on the stratum ground stress data and the gas load data, simulates acting force received in the working process of the 'open hole section', determines shrinkage data of the target pipe column according to monitored deformation data of a middle hole of the rock core, and well reduces the shrinkage condition of the target pipe column in the shrinkage simulation processing process, so that the shrinkage condition of the target pipe column can be accurately predicted and analyzed, accurate and effective data support is provided for the work evaluation processing of an injection-production pipe column, and the normal operation of a salt cavern reservoir is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a configuration of a contraction simulation device according to the present application;
FIG. 2 is a schematic diagram of a core structure according to the present application;
FIG. 3 is a schematic flow chart of a shrinkage data processing method of the injection-production string according to the present application;
FIG. 4 is a schematic diagram of a configuration of a shrinkage data processing apparatus of an injection and production string according to the present application;
FIG. 5 is a schematic diagram of a configuration of a shrinkage data processing apparatus of a production and injection string according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps appearing in the present application does not mean that the steps in the method flow have to be executed in the chronological/logical order indicated by the naming or numbering, and the named or numbered process steps may be executed in a modified order depending on the technical purpose to be achieved, as long as the same or similar technical effects are achieved.
The division of the modules presented in this application is a logical division, and in practical applications, there may be another division, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed, and in addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, and the indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.
The background to which this application relates will first be described.
The shrinkage data processing method and device for the injection-production string and the computer-readable storage medium can be applied to shrinkage data processing equipment for the injection-production string, are used for determining shrinkage data of an open hole section through simulation processing, can provide accurate and effective data support for work evaluation processing of the injection-production string, and are beneficial to guaranteeing normal operation of a salt cavern gas storage.
In the method for processing shrinkage data of an injection-production string, an execution main body may be a shrinkage data processing device of the injection-production string, or shrinkage data processing Equipment of different types of injection-production strings, such as a server, a physical host, or User Equipment (UE) that integrates the apparatus for processing shrinkage data of the injection-production string. The shrinkage data processing device of the injection-production string may be implemented in a hardware or software manner, the UE may specifically be a terminal device such as a smart phone, a tablet computer, a notebook computer, a desktop computer, or a Personal Digital Assistant (PDA), and the shrinkage data processing device of the injection-production string may be set in a device cluster manner.
The present application also relates to a shrinkage simulation device, which may include a shrinkage data processing device associated with the injection-production string, or may be independent of the shrinkage data processing device of the injection-production string, and form a shrinkage data processing system of the injection-production string with the shrinkage data processing device of the injection-production string, so as to accurately predict and analyze the shrinkage condition of the target string through simulation processing.
Before describing the shrinkage data processing method of the injection-production string mentioned in the present application, a shrinkage simulation device on which the shrinkage simulation processing of the present application depends will be described.
The shrinkage simulation device is a hardware device, and is used for simulating acting force of a target tubular column, namely a naked eye section, in an underground environment in a ground working scene, so that the shrinkage condition of the naked eye section can be simulated and restored according to deformation data monitored in an acting process and a simulation process, and then shrinkage data is determined.
Specifically, the processing object of the shrinkage simulation device is a sample of an "open hole section", that is, a core (a sample) collected from a salt layer where the "open hole section" is located, and the core is processed and provided with a middle hole, so that the "open hole section" is restored from a stratigraphic structure and a shape structure.
The shrinkage simulation device can particularly apply relevant acting force to the rock core to restore the acting force which is applied to the 'open hole section' in the underground environment and can cause shrinkage, so that the shrinkage condition of the 'open hole section' can be simulated.
Specifically, in the application, the acting force applied to the core by the shrinkage simulation device is mainly composed of two kinds, the first kind, which is the acting force applied to the core by matching the formation ground stress; and secondly, applying acting force matched with the gas load data to the core according to a middle hole configured in the target pipe column.
It will be appreciated that for a target string, i.e., an "open hole section," the present application recognizes it as being subjected primarily to the ground stresses imposed by the salt formation located outside the string and the gas loads imposed by the transmission gas (e.g., natural gas) originating inside the string in an actual subterranean environment.
Therefore, the shrinkage simulation device can simulate a salt layer where a 'naked eye section' is located from the outside of the core to apply acting force matched with formation ground stress to the core on one hand, and simulate transmission gas inside the 'naked eye section' to apply acting force matched with gas load data to the core according to a middle hole configured by the target pipe column on the other hand.
Specifically, the contraction simulation device can complete the application of the relevant acting force by adjusting the environments of the core inside and outside.
For example, starting from a gas environment, the transmission gas of the open hole section in the working process is reduced by injecting corresponding gas into the core according to the middle hole configured by the target pipe column, so that the purpose of applying acting force matched with gas load data to the core according to the middle hole configured by the target pipe column is achieved;
for another example, starting from a liquid environment, by injecting hydraulic oil to the outside of the core, the salt bed of the "open hole section" in the working process is reduced, and the purpose of simulating the salt bed of the "open hole section" and applying the acting force matched with the formation ground stress to the core is achieved.
The contraction simulation device can be combined with a gas environment, a liquid environment and even a fixed environment to adjust the environments of the rock core inside and outside, complete adjustment of related acting force, and restore and simulate the working scene of a naked eye section in an underground environment.
The specific environmental type of the environment in which the core is located, or the environmental adjustment mode, obviously can be adjusted according to actual conditions and actual needs, and therefore, the application is not particularly limited.
But for ease of understanding, the present application may also provide an example of a contraction simulation device as a supplementary description.
Referring to a schematic structural diagram of the contraction simulation device shown in fig. 1, in an example structure of the contraction simulation device shown in fig. 1, 1 is a middle hole on a core, 2 is the core, 3 is a pressure head, 4 is an upper steel plate, 5 is a waste gas tank, 6 is a lower steel plate, 7 is a base, 8 is a valve, 9 is a cylinder, 10 is a triaxial chamber, 11 is a servo hydraulic switch, 12 is an oil tank, and 13 is a valve, wherein, as a supplement, reference may also be made to a schematic structural diagram of the core shown in fig. 2.
It can be found that, the contraction simulation device, for the environment of the better reduction "bore hole section", also for the environment of the more convenient adjustment "bore hole section", the device can be the stroke enclosed construction, namely, there is airtight space, specifically, still can be according to two kinds of effort that required application, form two airtight spaces, one is the airtight space that the hydraulic oil environment corresponds, and the other is the airtight space that the gaseous environment corresponds, and two spaces can be according to the volume of hydraulic oil, the gaseous of injecting into, the effort size that corresponds is adjusted to the volume.
In the working process, the prepared core can be fixed at the bottom of the triaxial chamber by matching with the holder, and then a small force (about 0.5-1kN) can be applied to the axial direction of the core through the pressure head, the upper steel plate and the lower steel plate, so that the core is contacted with the axial loading device, and the fixation of the core is completed.
Then, on one hand, confining pressure can be applied to the rock core to a preset value through hydraulic oil in a triaxial chamber on the outer surface of the rock core, hydraulic oil load in the triaxial chamber can be controlled through a servo hydraulic switch, the source of the hydraulic oil is in an oil tank, on the other hand, gas in a cylinder can be injected into a hole in the middle of the rock core through a valve so as to apply gas load, wherein the values of the confining pressure and the gas load can be determined according to the 'naked eye section' design of the salt cavern gas storage, the gas load applied to a middle hole is smaller than the confining pressure corresponding to the actual underground environment, and in the process, deformation of the middle hole of the rock core can be recorded so as to provide data support for subsequent analysis of shrinkage data.
In this regard, the core is processed by taking it from the salt formation where the "open hole" of the salt cavern reservoir is located and drilling a vertical through hole in the middle of the core. In actual operation, the salt rock is considered to have water solubility and hygroscopicity, the rock core can be processed in a linear cutting processing mode, and multiple rock cores can be processed by considering the discreteness of the strength and the mechanical property of rock materials, so that repeated tests can be conveniently carried out.
Secondly, in the shrinkage simulation device, considering that the length from a salt layer where an open hole section is located to the ground surface is far longer than that of the open hole section (generally 10-20m), on the basis of the assumption of a plane strain problem in elasticity, one end of the salt layer connected with the ground surface is assumed to be a fixed constraint, the top of a salt cavity is arranged below the open hole section, free deformation is allowed, and therefore the lower end of the core is fixed on a holder of the core to limit the deformation of the core in the vertical direction
In addition, since the contraction simulation device involves injecting compressed gas into the middle hole of the core to apply a gas load, in order to ensure the stability of the gas load and prevent gas leakage, the whole device is generally required to be checked for gas tightness in advance to ensure the tightness of the internal closed space, and of course, hydraulic oil may also be checked for tightness.
On the basis of the simple introduction of the shrinkage simulation device, the shrinkage data processing method of the injection-production string provided by the application is introduced.
Referring to fig. 2 and fig. 2, a schematic flow chart of the shrinkage data processing method of an injection-production string according to the present application is shown in fig. 2, and the shrinkage data processing method of an injection-production string according to the present application may specifically include the following steps S301 to S305:
step S301, acquiring stratum crustal stress data of a salt layer where a target pipe column is located, wherein the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage further comprises a metal pipe column connected with the target pipe column;
it can be understood that the target string, namely the "open hole section" of the injection-production string of the salt cavern gas storage is arranged to prevent the whole injection-production string from being damaged by tension due to the tensile strain at the top of the salt cavity, and is directly obtained by hollowing out the salt layer stratum of the underground environment to form a hollow pipeline which can be connected with the metal string to form the whole injection-production string.
Before the 'naked eye section' is subjected to simulation treatment, stratum crustal stress data of a salt layer where the 'naked eye section' is located can be obtained in advance according to acting force required to be applied in the simulation treatment process and used as data basis, and the stratum crustal stress data is used for describing stratum crustal stress of the salt layer where the 'naked eye section' is located.
And measuring formation ground stress data, namely configuring a corresponding measuring component according to a specifically adopted ground stress measuring scheme, and measuring the formation ground stress data at an open hole section.
The acquisition of the formation ground stress data here may be a real-time measurement process, or a data retrieval process.
Further, processing of the data may also be involved.
As an exemplary implementation manner, initial formation ground stress data of a salt formation where the target pipe column is located can be obtained, and then on the basis of the initial formation ground stress data, the predicted formation ground stress change is continuously combined to generate the target formation ground stress data.
It can be understood that the initial formation ground stress data may be measured in real time or scheduled, and after the initial formation ground stress data is obtained, the present application considers that there may be a small amount of data and data samples in the actually acquired formation ground stress data, and at this time, data enhancement and data expansion may be performed on the data to expand the data amount, and specifically, new formation ground stress data may be generated in combination with the predicted change in the formation ground stress.
The predicted formation ground stress change can be configured by combining different events which may occur in practical application, such as formation creep, open hole adjustment position and other events, so that formation ground stress data with different and more data quantities can be configured according to different prediction requirements.
Step S302, acquiring gas load data of gas transmitted in a target pipe column;
in addition to the formation ground stress data, according to the acting force required to be applied in the simulation treatment process, as a data basis, gas load data of the transmission gas in the "open hole section" can be obtained in advance, and the gas load data is used for describing the gas load of the transmission gas in the "open hole section".
Measuring gas load data, namely configuring a corresponding measuring component according to a specifically adopted gas load measuring scheme, and measuring the gas load data of the gas transmitted in the naked eye section; or, because the transmission gas in the naked eye section is natural gas which is a working object in the normal operation process of the salt cavern gas storage, the monitoring of factors such as gas flow and the like can be involved in the normal operation, and therefore, the gas load data can also be directly extracted from the database.
Here, the acquisition of the gas load data may be a real-time measurement process or a data retrieval process.
Similar to formation ground stress data, processing of the data may also be involved.
As yet another exemplary implementation, initial gas load data for the transmission gas within the target string may be obtained; target gas load data is then generated based on the initial gas load data in combination with the predicted gas load change.
Step S303, after installing a rock core collected by a salt layer where the target pipe column is located in a contraction simulation device, triggering the contraction simulation device to apply acting force matched with formation ground stress data to the rock core, and applying acting force matched with gas load data to the rock core according to a middle hole configured by the target pipe column;
after the formation ground stress data and the gas load data are obtained, the shrinkage simulation device can be controlled based on the formation ground stress data and the gas load data, the shrinkage simulation device is triggered to apply corresponding acting force to the rock core, and the working scene of the open hole section in the underground environment is simulated and restored.
For a basic description of the contraction simulation device, reference is made to the foregoing description, and details are not repeated herein.
As an implementation suitable for practical use, the contraction simulation device may be combined with a liquid environment or a gas environment to perform the application of the relevant acting force.
For example, the shrinkage simulation device may be specifically triggered to inject hydraulic oil into the internal closed cavity, so that the core is subjected to a hydraulic oil load matched with formation geostress data, and the shrinkage simulation device is triggered to inject gas into the core according to a middle hole configured in the target string, so that the middle hole is subjected to a gas load matched with gas load data.
On the basis, the specific acting force application process specifically comprises the following steps:
1. hydraulic oil injection corresponding to formation ground stress
Calculating the hydraulic oil injection amount required by the hydraulic oil load matched with the formation ground stress data of the core according to the volume of a closed cavity in the shrinkage simulation device;
and generating a first control instruction according to the injection amount of the hydraulic oil, sending the first control instruction to a servo hydraulic switch configured in the oil tank, enabling the servo hydraulic switch to adjust the working state, and injecting the hydraulic oil stored in the oil tank into the closed cavity, so that the rock core is subjected to a hydraulic oil load matched with the formation ground stress data.
2. Gas injection corresponding to gas load
Calculating the gas injection amount required by the gas load of the middle hole matched with the gas load data according to the volume of the middle hole configured by the target pipe column;
and generating a second control instruction according to the gas injection amount, sending the second control instruction to a valve configured in the cylinder, enabling the valve to adjust the working state, and injecting the gas stored in the cylinder into the middle hole, so that the middle hole is subjected to the gas load matched with the gas load data.
It can be seen from the above two acting force applying processes that for the injection of hydraulic oil/gas, the acting force is applied by firstly determining the injection amount according to the volume of the closed space and the required applied formation ground stress/gas load, and then generating a corresponding control command to trigger the injection of the corresponding hydraulic oil/gas after determining the injection amount.
Furthermore, it can be seen that the shrinkage simulation device according to the present application, the body (for example, the structure shown in fig. 1) of which is free from complex data processing, and the processing of the related work instructions related thereto can be performed by an external device, that is, the shrinkage data processing device of the injection and production string provided by the present application, but of course, in some cases, the shrinkage simulation device body can also be understood as being included in the shrinkage data processing device of the injection and production string.
Step S304, monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and when the shrinkage simulation device applies relevant acting force to the rock core therein, and the condition of the open hole section in the underground environment is simulated and restored, deformation data of the middle hole in the rock core can be collected and monitored through relevant sensors.
It is understood that the deformation data is a raw shrinkage data, the data type of which is related to the sensing type of a specific sensor, and data processing can be performed subsequently, and data type conversion, data integration, data prediction and the like can be involved in the data processing process to obtain the final shrinkage data which can be output.
As another practical implementation manner, during the operation of the contraction simulation device, the deformation data of the middle hole can be monitored by the linear displacement sensor, two ends of the linear displacement sensor are in contact with the hole wall of the middle hole, during the deformation of the middle hole, the hole wall of the middle hole causes the length of the linear displacement sensor to change correspondingly, and the linear position sensor records the change of the length of the linear position sensor to obtain a diameter monitoring result as the deformation data.
As another practical implementation manner, during the operation of the contraction simulation device, the deformation data of the middle hole may be monitored by the annular displacement sensor, the annular body of the annular displacement sensor contacts with the hole wall of the middle hole, during the deformation of the middle hole, the hole wall of the middle hole causes the length of the annular displacement sensor to change correspondingly, and the annular displacement sensor records the change of the length thereof to obtain the circumference monitoring result as the deformation data.
It will be appreciated that in addition to the linear position sensor and the annular displacement sensor, in practical operation, other types of sensors, such as infrared sensors, ultrasonic sensors, even image sensors, etc., may be configured, and the specific sensor types and monitoring schemes thereof may be adjusted according to practical requirements.
For example, a selection can be made from the types of sensors that the retraction simulator can accommodate and can be easily configured, and the sensor type can be determined, for example, from the aspect of monitoring accuracy.
Step S305, determining shrinkage data of the target tubular column according to the deformation data.
After deformation data of a middle hole on a rock core is obtained through monitoring of a related sensor, it can be understood that the middle hole corresponds to an open hole section, deformation, namely shrinkage of the middle hole section is simulated and reduced, and therefore data processing can be carried out on the deformation data, the deformation data can be analyzed to obtain the open hole section, namely shrinkage data of a target tubular column, and the shrinkage data can be output.
In the data processing process, data type conversion, data integration, data prediction and other processing can be involved, and the analysis of the shrinkage condition of the naked eye section is completed on the basis of simulation processing.
In combination with the above, in general, for the shrinkage prediction of the "naked eye segment", the present application, in case of being configured with a shrinkage simulation device, acquiring formation ground stress data of a salt layer where a target pipe column, namely an open hole section, is located and gas load data of transmission gas of the salt layer, triggering a shrinkage simulation device to acquire acting force corresponding to a rock core of the open hole section based on the formation ground stress data and the gas load data, simulating the acting force applied in the working process of the open hole section, determining the shrinkage data of the target pipe column according to the monitored deformation data of the middle hole of the core, in the shrinkage simulation treatment process, the shrinkage condition of the target pipe column is well reduced, so that the shrinkage condition of the target pipe column can be accurately predicted and analyzed, accurate and effective data support is provided for the work evaluation treatment of the injection and production pipe column, and the normal operation of the salt cavern gas storage is favorably ensured.
The above is the introduction of the shrinkage data processing method for the injection and production string provided by the application, and the application also provides a shrinkage data processing device for the injection and production string from the perspective of a functional module, so as to better implement the shrinkage data processing method for the injection and production string provided by the application.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a shrinkage data processing apparatus of an injection-production string according to the present application, in which the shrinkage data processing apparatus 400 of an injection-production string may specifically include the following structures:
the acquisition unit 401 is configured to acquire formation ground stress data of a salt layer where a target string is located, where the target string is a string part formed by a salt layer formation structure in an injection-production string of a salt cavern gas storage, and the injection-production string of the salt cavern gas storage further includes a metal string connected to the target string;
the acquiring unit 401 is further configured to acquire gas load data of the gas transmitted in the target tubular column;
the triggering unit 402 is used for triggering the shrinkage simulation device to apply an acting force matched with the formation ground stress to the rock core after the rock core collected by the salt layer where the target pipe column is located is arranged in the shrinkage simulation device, and applying an acting force matched with the gas load data to the rock core according to the middle hole configured by the target pipe column;
a monitoring unit 403, configured to monitor deformation data of the middle hole during a working process of the contraction simulation device;
a determining unit 404 for determining shrinkage data of the target tubular string based on the deformation data.
In an exemplary implementation manner, the triggering unit 402 is specifically configured to:
and triggering the shrinkage simulation device to inject gas into the core according to a middle hole configured by the target pipe column so that the middle hole receives a gas load matched with the gas load data.
In another exemplary implementation manner, the triggering unit 402 is specifically configured to:
calculating the hydraulic oil injection amount required by the hydraulic oil load matched with the formation ground stress data of the core according to the volume of a closed cavity in the shrinkage simulation device;
and generating a first control instruction according to the injection amount of the hydraulic oil, sending the first control instruction to a servo hydraulic switch configured in the oil tank, enabling the servo hydraulic switch to adjust the working state, and injecting the hydraulic oil stored in the oil tank into the closed cavity, so that the rock core is subjected to a hydraulic oil load matched with the formation ground stress data.
In another exemplary implementation manner, the triggering unit 402 is specifically configured to:
calculating the gas injection amount required by the gas load of the middle hole matched with the gas load data according to the volume of the middle hole configured by the target pipe column;
and generating a second control instruction according to the gas injection amount, sending the second control instruction to a valve configured in the cylinder, enabling the valve to adjust the working state, and injecting the gas stored in the cylinder into the middle hole, so that the middle hole is subjected to the gas load matched with the gas load data.
In another exemplary implementation manner, the obtaining unit 401 is specifically configured to:
acquiring initial stratum crustal stress data of a salt layer where a target pipe column is located;
on the basis of the initial stratum crustal stress data, combining the predicted stratum crustal stress change to generate target stratum crustal stress data;
acquiring initial gas load data of gas transmitted in a target pipe column;
target gas load data is generated based on the initial gas load data in combination with the predicted gas load change.
In another exemplary implementation manner, the monitoring unit 403 is specifically configured to:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the linear displacement sensor, two ends of the linear displacement sensor are in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the linear displacement sensor to change correspondingly, the linear position sensor records the change of the length of the linear displacement sensor, and a diameter monitoring result is obtained and serves as the deformation data.
In another exemplary implementation manner, the monitoring unit 403 is specifically configured to:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through the annular displacement sensor, the annular body of the annular displacement sensor is in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the annular displacement sensor to change correspondingly, the annular displacement sensor records the change of the length of the annular displacement sensor, and a perimeter monitoring result is obtained and serves as the deformation data.
The present application further provides a shrinkage data processing device for an injection and production string from a hardware structure perspective, referring to fig. 5, fig. 5 shows a schematic structural diagram of the shrinkage data processing device for an injection and production string in the present application, specifically, the processing device in the present application may include a processor 501, a memory 502, and an input/output device 503, where the processor 501 is configured to implement each step of the shrinkage data processing method for an injection and production string in the corresponding embodiment of fig. 1 when executing a computer program stored in the memory 502; alternatively, the processor 501 is configured to implement the functions of the units in the embodiment corresponding to fig. 4 when executing the computer program stored in the memory 502, and the memory 502 is configured to store the computer program required by the processor 501 to execute the method for processing the shrinkage data of the injection and production string in the embodiment corresponding to fig. 1.
Illustratively, a computer program may be partitioned into one or more modules/units, which are stored in memory 502 and executed by processor 501 to accomplish the present application. One or more modules/units may be a series of computer program instruction segments capable of performing certain functions, the instruction segments being used to describe the execution of a computer program in a computer device.
The shrinkage data processing equipment of the injection and production string may include, but is not limited to, a processor 501, a memory 502, and input-output equipment 503. It will be appreciated by those skilled in the art that the illustration is merely an example of a constriction data processing apparatus of a production and injection string and does not constitute a limitation of a constriction data processing apparatus of a production and injection string, and may include more or fewer components than those illustrated, or some components in combination, or different components, for example, the constriction data processing apparatus of a production and injection string may also include a network access device, a bus, etc., and the processor 501, the memory 502, the input-output device 503, etc., are connected via the bus.
The Processor 501 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center for the shrink data processing apparatus of the production string, with various interfaces and lines connecting the various parts of the overall apparatus.
The memory 502 may be used to store computer programs and/or modules, and the processor 501 may implement various functions of the computer device by running or executing the computer programs and/or modules stored in the memory 502, as well as invoking data stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the like; the stored data area may store data created from use of the contracted data processing apparatus of the injection and production string, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The processor 501, when executing the computer program stored in the memory 502, may specifically implement the following functions:
acquiring stratum crustal stress data of a salt layer where a target pipe column is located, wherein the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage also comprises a metal pipe column connected with the target pipe column;
acquiring gas load data of gas transmitted in a target pipe column;
after a rock core collected by a salt layer where a target pipe column is located is arranged in a contraction simulation device, the contraction simulation device is triggered to apply acting force matched with formation ground stress data to the rock core, and gas load data matched acting force is applied to the rock core according to a middle hole configured by the target pipe column;
monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and determining shrinkage data of the target tubular column according to the deformation data.
In addition, as mentioned above, the shrinkage simulation device may include a shrinkage data processing device associated with the injection and production string, or may be independent of the shrinkage data processing device of the injection and production string, and form a shrinkage data processing system of the injection and production string with the shrinkage data processing device of the injection and production string.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described shrinkage data processing apparatus, device, system and corresponding units of the injection-production string may refer to the description of the shrinkage data processing method of the injection-production string in the embodiment corresponding to fig. 3, and are not described herein again in detail.
It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be performed by instructions or by associated hardware controlled by the instructions, which may be stored in a computer readable storage medium and loaded and executed by a processor.
For this reason, the present application provides a computer-readable storage medium, in which a plurality of instructions are stored, where the instructions can be loaded by a processor to execute the steps of the method for processing the contraction data of the injection-production string in the embodiment corresponding to fig. 3 in the present application, and specific operations may refer to the description of the method for processing the contraction data of the injection-production string in the embodiment corresponding to fig. 3, which is not described herein again.
Wherein the computer-readable storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Since the instructions stored in the computer-readable storage medium can execute the steps of the method for processing the shrinkage data of the injection-production string in the embodiment corresponding to fig. 3, the beneficial effects that can be achieved by the method for processing the shrinkage data of the injection-production string in the embodiment corresponding to fig. 3 can be achieved, for details, see the foregoing description, and are not repeated herein.
The method, the device, the equipment, the system and the computer-readable storage medium for processing the shrinkage data of the injection-production string provided by the application are introduced in detail, specific examples are applied in the description to explain the principle and the implementation mode of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A method for processing shrinkage data of a production and injection string, the method comprising:
acquiring stratum crustal stress data of a salt layer where a target pipe column is located, wherein the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage also comprises a metal pipe column connected with the target pipe column;
acquiring gas load data of the gas transmitted in the target pipe column;
after a rock core collected by a salt layer where the target pipe column is located is arranged in a shrinkage simulation device, the shrinkage simulation device is triggered to apply acting force matched with the formation ground stress data to the rock core, and the acting force matched with the gas load data is applied to the rock core according to a middle hole configured by the target pipe column;
monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and determining shrinkage data of the target tubular column according to the deformation data.
2. The method according to claim 1, wherein the triggering the shrinkage simulation device to apply the formation geostress data matching force to the core, and the triggering the shrinkage simulation device to apply the gas load data matching force to the core according to the intermediate hole configured in the target string specifically comprise:
and triggering the contraction simulation device to inject hydraulic oil into an internal closed cavity so that the rock core is subjected to a hydraulic oil load matched with the formation ground stress data, and triggering the contraction simulation device to inject gas into the rock core according to a middle hole configured by the target tubular column so that the middle hole is subjected to a gas load matched with the gas load data.
3. The method according to claim 2, wherein the triggering the shrinkage simulation device to inject hydraulic oil into the internal closed cavity so that the core is subjected to a hydraulic oil load matched with the formation geostress data comprises:
calculating the hydraulic oil injection amount required by the rock core subjected to the hydraulic oil load matched with the formation ground stress data according to the volume of a closed cavity in the shrinkage simulation device;
and generating a first control instruction according to the injection amount of the hydraulic oil, sending the first control instruction to a servo hydraulic switch configured in an oil tank, enabling the servo hydraulic switch to adjust the working state, and injecting the hydraulic oil stored in the oil tank into the closed cavity, so that the core is subjected to a hydraulic oil load matched with the formation ground stress data.
4. The method as recited in claim 2, wherein triggering the contraction simulation device to inject gas into an intermediate bore of the core configured according to the target string such that the intermediate bore is subjected to a gas load matching the gas load data comprises:
calculating the gas injection amount required by the gas load matched with the gas load data of the middle hole according to the volume of the middle hole configured by the target pipe column in the core;
and generating a second control instruction according to the gas injection amount, sending the second control instruction to a valve configured in a cylinder, enabling the valve to adjust the working state, and injecting the gas stored in the cylinder into the middle hole, so that the middle hole is subjected to the gas load matched with the gas load data.
5. The method of claim 1, wherein the obtaining formation geostress data for a salt formation in which the target string is located comprises:
acquiring initial stratum crustal stress data of a salt layer where the target pipe column is located;
on the basis of the initial stratum crustal stress data, combining the predicted stratum crustal stress change to generate target stratum crustal stress data;
the acquiring gas load data of the transmission gas in the target string comprises:
acquiring initial gas load data of the gas transmitted in the target pipe column;
target gas load data is generated in combination with the predicted gas load change on the basis of the initial gas load data.
6. The method of claim 1, wherein monitoring deformation data of the central bore during operation of the contraction simulation device comprises:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through a linear displacement sensor, two ends of the linear displacement sensor are in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the length of the linear displacement sensor is enabled to change correspondingly through the hole wall of the middle hole, the linear position sensor records the change of the length of the linear displacement sensor, and a diameter monitoring result is obtained and serves as the deformation data.
7. The method of claim 1, wherein monitoring deformation data of the central bore during operation of the contraction simulation device comprises:
in the working process of the contraction simulation device, deformation data of the middle hole is monitored through an annular displacement sensor, an annular body of the annular displacement sensor is in contact with the hole wall of the middle hole, in the deformation process of the middle hole, the hole wall of the middle hole enables the length of the annular displacement sensor to change correspondingly, the annular displacement sensor records the change of the length of the annular displacement sensor, and a perimeter monitoring result is obtained and serves as the deformation data.
8. A shrinkage data processing apparatus for a production and injection string, the apparatus comprising:
the system comprises an acquisition unit, a storage unit and a control unit, wherein the acquisition unit is used for acquiring stratum crustal stress data of a salt layer where a target pipe column is located, the target pipe column is a pipe column part consisting of a salt layer stratum structure in an injection and production pipe column of a salt cavern gas storage, and the injection and production pipe column of the salt cavern gas storage further comprises a metal pipe column connected with the target pipe column;
the acquisition unit is also used for acquiring gas load data of the gas transmitted in the target pipe column;
the triggering unit is used for triggering the shrinkage simulation device to apply acting force matched with the formation ground stress to the rock core after the rock core collected by the salt layer where the target pipe column is located is arranged in the shrinkage simulation device, and applying acting force matched with the gas load data to the rock core according to a middle hole configured by the target pipe column;
the monitoring unit is used for monitoring deformation data of the middle hole in the working process of the contraction simulation device;
and the determining unit is used for determining the shrinkage data of the target tubular column according to the deformation data.
9. A shrink data processing apparatus for a production string comprising a processor and a memory, the memory having stored therein a computer program, the processor when calling the computer program in the memory performing the method of any of claims 1 to 7.
10. A contraction data processing system for an injection and production string, the system comprising a contraction simulation apparatus and the contraction data processing apparatus for an injection and production string according to claim 9.
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