CN108920835B - Marine vessel fracturing operation decision-making knowledge acquisition system - Google Patents
Marine vessel fracturing operation decision-making knowledge acquisition system Download PDFInfo
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Abstract
The invention discloses a decision-making knowledge acquisition system for marine vessel fracturing operation. The method can effectively solve the problems of fracturing operation of marine vessel fracturing operation under complex sea conditions and acquisition of vessel operation decision knowledge. The method can effectively simulate complex sea conditions, the motion attitude of the ship platform and the fracturing operation process by adopting a modeling simulation technology and a virtual simulation technology, can explore fracturing operation schemes under various complex sea conditions, can also explore ship operation schemes under the complex sea conditions and the fracturing operation, obtains decision schemes of fracturing operation and ship operation under different sea conditions, and effectively breaks through the bottleneck faced by the traditional knowledge acquisition method.
Description
Technical Field
The invention relates to the technical field of marine oil and gas fracturing operation, in particular to a decision-making knowledge acquisition system for marine ship fracturing operation.
Background
The fracturing operation of the oil and gas well is an important method for improving the oil and gas yield, the fracturing operation of the marine oil and gas well is complex in process and difficult to operate, and a fracturing system and the ship posture are mutually influenced in the fracturing operation process of a marine ship. Sea interference factors such as sea wind and swell directly influence the stability and the motion attitude of the ship platform and also influence the fracturing process; the sand mixing system, the acid liquor system, the fracturing pump, the cooling system and the like in the fracturing operation process can cause huge vibration and changes of the stable center and the gravity center of the ship, and further influence the adjustment of the motion posture of the ship and the implementation of the fracturing operation process. The marine vessel and the fracturing operation system are mutually coupled and restricted and are influenced by external marine environment interference factors, so that the fracturing operation of the marine vessel is extremely difficult especially under complex sea conditions.
At present, aiming at the problem of marine vessel fracturing operation under complex sea conditions, the proposed marine fracturing operation auxiliary decision is to construct an expert knowledge base according to fracturing operation expert knowledge, but in the construction process of the marine fracturing auxiliary decision knowledge base, the most key step is to obtain the domain expert knowledge, and knowledge and experience provided by consulting of literature data, experts with abundant experience and first-line operation technicians are mainly adopted at present. The consulting of literature and the expert experience are incomplete, and the problems of the marine fracturing operation cannot be covered, so the development of an auxiliary decision-making system for the marine fracturing operation is directly restricted by the knowledge acquisition mode.
Disclosure of Invention
In view of the above, the invention provides a decision knowledge acquisition system for marine vessel fracturing operation, which can explore effective decision schemes for marine vessel fracturing operation under various sea conditions in a simulation environment through information technologies such as a modeling simulation technology, a virtual simulation technology, a decision optimization technology and the like, solve the problem of acquisition of fracturing operation and vessel operation decision knowledge of marine vessel fracturing operation under complex sea conditions, provide decision support for marine vessel fracturing operation, and further ensure the safety of fracturing operation in complex marine environment.
The marine vessel fracturing operation decision knowledge acquisition system comprises a man-machine interaction module, a vessel operation module, a vessel motion module, a fracturing operation behavior module, a fracturing operation module, a virtual simulation environment module, an evaluation module and a knowledge storage module;
the man-machine interaction module is used for setting marine environment state parameters, initial state parameters and motion parameters of a ship and initial parameters of fracturing operation;
the virtual simulation environment module is used for simulating marine environment and visualizing ship and fracturing operation;
the ship operation module generates ship operation parameters for eliminating ship attitude deviation according to the marine environment interference parameters sent by the virtual simulation environment module and the ship real-time attitude parameters sent by the ship motion model;
the ship motion model constructs a ship motion model containing marine environment interference and fracturing operation interference according to the initial state parameters and the motion parameters of the ship set by the man-machine interaction module; according to the fracturing operation interference parameters sent by the fracturing operation module, the marine environment interference parameters sent by the virtual simulation environment module and the ship operation parameters sent by the ship operation model, the attitude parameters of the ship are solved in real time according to the constructed ship motion model;
the fracturing operation behavior module generates all possible fracturing operation behavior sequences according to the fracturing operation initial parameters set by the man-machine interaction module and sequentially outputs the fracturing operation behavior sequences to the fracturing operation module;
the fracturing operation module constructs a fracturing system model and carries out fracturing action operation on the fracturing system model according to a fracturing operation action sequence output by the fracturing operation action module, wherein before each fracturing action operation, whether the current operation condition is in a fracturing operation safety range or not is judged according to a ship attitude parameter sent by a ship motion model and an ocean environment interference parameter sent by a virtual simulation environment module, if not, the current fracturing action operation is stopped, and the fracturing operation result of the current fracturing operation action sequence is 0; if the current interference parameter meets the requirement, executing the current fracturing behavior operation, after the fracturing behavior operation is executed, solving the interference parameter of the current fracturing behavior operation on the fracturing operation of the ship by the fracturing system model, and outputting the interference parameter of the fracturing operation to the ship motion model; then, continuously judging whether the next fracturing action operation is carried out or not, repeating the operation till all action operations in the fracturing action sequence are executed, and obtaining a fracturing operation result corresponding to the fracturing action sequence; outputting fracturing operation results corresponding to the fracturing behavior sequence to an evaluation module;
the evaluation module carries out safety and effectiveness evaluation on the fracturing operation results of all the fracturing behavior sequences under the same marine environment to obtain the optimal fracturing behavior sequence under the marine environment; and outputting the marine environment parameters, the optimal fracturing behavior sequence under the marine environment, the fracturing operation result and the evaluation result to a knowledge storage module for storage, and displaying the results by a human-computer interaction module.
Further, the ship operation module comprises a dynamic positioning unit and a ship movement operation unit;
the dynamic positioning unit obtains the attitude offset of the ship according to the real-time attitude parameters of the ship sent by the ship motion model; generating operating parameters of power propulsion equipment distributed around the ship according to the ship attitude offset and marine environment interference parameters sent by the virtual simulation environment module, and eliminating the ship attitude offset;
when the dynamic positioning unit can not completely eliminate the ship attitude offset, starting a ship motion operation unit; the ship motion operation unit generates an operation parameter of a ship main propeller and an operation parameter of a ship position attitude according to the ship attitude offset, the marine environment interference parameter sent by the virtual simulation environment module and the operation parameter of the power propulsion device generated by the power positioning unit, and eliminates the ship attitude offset.
Further, after obtaining fracturing operation results corresponding to all fracturing operation behavior sequences in the same marine environment, the evaluation module firstly deletes the fracturing operation behavior sequence with the fracturing operation result of 0; and then performing multi-attribute decision analysis on other fracturing operation behavior sequences in the marine environment according to the state of the ship and the fracturing operation efficiency to obtain the optimal fracturing operation behavior sequence in the marine environment.
Has the advantages that:
1) The modeling simulation technology and the virtual simulation technology can effectively simulate complex sea conditions, the motion posture of a ship platform and the fracturing operation process, can explore fracturing operation schemes under various complex sea conditions, can also explore ship operation schemes under the complex sea conditions and the fracturing operation, obtains decision schemes of fracturing operation and ship operation under different sea conditions, and effectively breaks through the bottleneck faced by the traditional knowledge acquisition method.
2) The method has the characteristics of high efficiency in exploring the marine fracturing operation decision knowledge by adopting a modeling simulation technology and a virtual simulation technology, can set different marine environment interference factors and fracturing operation working conditions according to actual requirements, and can obtain corresponding decision knowledge through a simulation test of a knowledge acquisition system.
3) The decision-making scheme is analyzed and evaluated by adopting a multi-attribute decision-making method, a group of optimal ship operation and fracturing operation matching schemes are selected by comprehensively considering a plurality of attributes, the dimensionality of a ship operation and fracturing operation decision-making space is effectively reduced, the problem of redundant decision-making knowledge decision-making during emergency decision-making of fracturing operation under complex sea conditions is avoided, and the efficiency and the safety of marine ship fracturing operation are effectively improved.
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Fig. 1 is a structural diagram of a decision-making knowledge acquisition system for marine vessels and fracturing operations.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
In order to effectively solve the problem of acquisition of marine fracturing operation knowledge, the invention provides a marine vessel fracturing operation decision knowledge acquisition system, which breaks through the bottleneck of acquisition of vessel fracturing operation decision knowledge under complex sea conditions through information technologies such as a modeling simulation technology, a virtual simulation technology, a decision optimization technology and the like, and effectively solves the problem of search of vessel fracturing operation decision expert knowledge.
The invention relates to a decision-making knowledge acquisition system for marine vessel fracturing operation, which comprises: the system comprises a human-computer interaction module, a ship operation module, a fracturing operation behavior module, a ship motion module, a fracturing operation module, a virtual simulation environment module, an evaluation module and a knowledge storage module.
Wherein the content of the first and second substances,
man-machine interactive module
The man-machine interaction module is an interaction window between an operator and the knowledge acquisition system, and the operator can set test environment parameters (including simulated marine environment, ship and motion state thereof, fracturing operation parameters), test step length, test initial conditions, test finishing conditions and the like through the man-machine interaction module. The test step length and the test ending condition are simulation test control parameters, the test step length limits the calculation frequency of the marine vessel fracturing operation test, and the test ending condition is a reference condition for judging whether the test is ended. The man-machine interaction module comprises: the device comprises a fracturing operation parameter setting unit, a ship state and motion parameter setting unit and a marine environment state setting unit.
(1) Fracturing operation parameter setting unit
The fracturing operation parameter setting unit is used for setting the basic state of the fracturing operation system and setting a related initial state for offshore fracturing operation. The fracturing operation system comprises a fracturing pump system (a power system, a transmission system and a pumping system), a sand mixing system (a transmission system, a liquid supply system and a sand conveying system) and a manifold system. The initial parameters include: the system comprises a liquid supply system, a sand mixing system, a fracturing pump, a transmission system, a fracturing pump, a cooling system and subsystems, wherein the liquid supply system comprises a liquid level initial height, the sand mixing system discharges flow, the fracturing pump discharge port pressure, the transmission system initial state, the fracturing pump initial state, the cooling system initial state and the alarm states of the subsystems. Outputting the set base state and initial state of the fracturing job to a fracturing operation behavior module.
(2) Ship state and motion parameter setting unit
The ship state and motion parameter setting unit is used for setting ship state initial parameters, such as: parameters such as ship type, initial longitude, initial latitude, initial navigational speed, initial course, transverse inclination angle, longitudinal inclination angle, heading angle and the like are output to the ship operation module; meanwhile, the ship state and motion parameter setting unit is also used for setting hydrodynamic coefficients (namely basic motion parameters of the ship) of the corresponding type of fracturing ship, and outputting the set hydrodynamic parameters to a ship motion model to prepare for a ship fracturing operation decision test.
(3) Marine environment state setting unit
The offshore fracturing operation can be influenced by the motion attitude of the ship platform, and the marine environmental interference factors which can influence the motion state of the ship motion platform mainly comprise: ocean currents, sea winds, and swell. Marine environment state setting unit mainly used sets up marine environment state data, includes: sea current direction, sea current size, sea wind direction, sea wind speed, surge wavelength, surge frequency, and surge height. And outputting the set marine environment state data to the virtual simulation environment module.
(II) Ship operation Module
The ship operation module provides operation behavior actions for the virtual marine fracturing ship constructed by the virtual simulation model module; the ship operation module carries out ship attitude control resolving according to the ship state initial parameters sent by the ship state and motion parameter setting unit, the marine environment interference factors sent by the virtual simulation environment module and the real-time ship attitude data sent by the ship motion module, and outputs the operation parameters of the virtual marine fracturing ship to the ship motion model, so that the attitude of the virtual marine fracturing ship is always in a stable state, and normal fracturing operation is guaranteed. The ship operation module includes: the dynamic positioning unit and the ship motion operation unit.
The dynamic positioning unit calculates the attitude offset of the ship in real time according to the ship state initial parameters sent by the ship state and motion parameter setting unit and the ship attitude data sent by the ship dynamic model, and when the ship attitude offset exceeds a set threshold value, the dynamic propulsion equipment distributed around the ship is started according to the marine environment interference factors sent by the virtual simulation environment module and the ship attitude information sent by the ship motion module, the operating parameters of the dynamic propulsion equipment around the ship are calculated, the attitude offset is eliminated, and the ship attitude is in a stable state.
A ship movement operation unit: when the dynamic positioning unit can effectively eliminate the ship attitude offset, the ship movement operation unit does not work; the ship motion operation unit is started according to marine environment interference factors sent by the virtual simulation environment module, real-time ship attitude data sent by the ship motion module and ship peripheral power propulsion equipment operation parameters sent by the power positioning unit, a main propeller and a rudder of a ship platform are started, operation parameters of the main propeller and the rudder of the ship platform are calculated, steering and propulsion power is provided for the movement of the ship, the ship attitude offset is eliminated, and the ship attitude is ensured to be in a stable state.
(III) Ship motion model
The ship motion model adopts a general water surface ship kinematics basic model and is a six-degree-of-freedom rigid body motion equation, the kinematics equation comprises 18 hydrodynamic parameters, and different ship models are determined by different hydrodynamic parameters. Firstly, constructing a basic motion model of the marine fracturing operation ship according to the ship type set by the ship state and motion parameter setting unit and the hydrodynamic coefficient corresponding to the ship of the type; and then, calculating the motion attitude and position of the ship in real time according to the operation parameters output by the ship operation module, the marine environment interference parameters output by the virtual simulation environment module, the fracturing operation interference parameters output by the fracturing operation module and the ship basic motion parameters set by the ship state and motion parameter setting unit, and outputting the real-time motion attitude and position of the ship to the ship operation module, the fracturing operation module and the virtual simulation environment module.
(IV) fracturing operation behavior module
The fracturing system comprises a fracturing pump subsystem (a power system, a transmission system and a pumping system), a sand mixing subsystem (a transmission system, a liquid supply system and a sand conveying system), a manifold subsystem and an instrument monitoring subsystem. In the process of carrying out ocean fracturing operation, a fracturing pump subsystem and a sand mixing subsystem are mainly operated to carry out fracturing operation, a manifold subsystem is utilized to realize operations such as liquid supply, sand conveying and the like, and an instrument monitoring subsystem is adopted to carry out real-time monitoring on the state and the progress of the fracturing operation. Therefore, the fracturing operation behaviors related to the system mainly comprise the operation behaviors of a fracturing pump subsystem and a sand mixing subsystem, wherein the operation behaviors of the fracturing pump subsystem comprise a power system operation behavior, a transmission system operation behavior and a pumping system operation behavior, and the operation behaviors of the sand mixing subsystem comprise a transmission system operation behavior, a liquid supply system operation behavior and a sand conveying system operation behavior.
The fracturing operation behavior module constructs all possible fracturing operation behavior sequences of the marine fracturing operation according to onshore operation specifications of the fracturing operation, and sequentially sends all possible fracturing operation behavior sequences to the fracturing operation module. A sequence of fracturing operation activities includes individual fracturing operation activities on a fracturing system in a fracturing operation.
(V) fracturing operation module
The fracturing operation module constructs a fracturing system model; according to the fracturing operation behavior sequence sent by the fracturing operation behavior module, performing related behavior operations on the fracturing system model in sequence according to various behavior operation parameters in the sequence, simulating marine fracturing operation, calculating interference force and interference moment (namely fracturing operation interference parameters) generated by the fracturing system after each fracturing behavior operation on a ship by using the fracturing system model, and feeding the fracturing operation interference parameters generated after each fracturing behavior operation back to the ship motion module; and after all the action operations in one fracturing operation action sequence are completed, obtaining a fracturing operation result corresponding to the action sequence, and sending the fracturing operation result to the evaluation module.
When the fracturing system is used for carrying out ocean fracturing operation, the systems capable of influencing a ship are a fracturing pump subsystem and a sand mixing subsystem. When the fracturing pump is used for fracturing operation, high-pressure and large-discharge fracturing fluid is injected into the deep well by pressurization, a transmission system, a liquid supply system and a sand conveying system which are loaded on a ship can work simultaneously along with the operation of the fracturing pump, the fracturing fluid and mixed sand are continuously injected into the deep well along with the operation of the fracturing pump, the gravity center of the ship can be changed, and therefore the stability of the ship is changed. Therefore, the fracturing system model constructed by the fracturing operation module mainly comprises a fracturing pump subsystem model and a sand mixing subsystem model. The fracturing behavior operation is mainly the behavior operation of the two subsystem models.
In addition, the fracturing operation needs to work under safe operation conditions, and therefore, before each fracturing action operation is executed, the fracturing operation model needs to judge whether the fracturing action operation can be executed according to the current marine environment and the attitude information of the ship.
Before each fracturing action operation is executed, the fracturing operation module firstly judges whether the current operation condition is in a safe range of the ocean fracturing action according to ship attitude data sent by a ship motion model and ocean environment interference parameters sent by a virtual simulation environment module, if the current operation condition is not in the safe range of the ocean fracturing action, the fracturing action operation is stopped, and the fracturing operation result corresponding to the fracturing operation action sequence is 0; if the behavior is satisfied, performing fracturing behavior operation on the fracturing system model according to the corresponding behavior operation in the fracturing operation behavior sequence sent by the fracturing operation behavior module, after the fracturing behavior operation is executed, the fracturing system model calculates the interference force and the interference moment on the ship generated by the fracturing behavior operation and outputs the interference force and the interference moment to the ship motion model, and then continuously judging whether the next fracturing behavior operation is performed or not, repeating the operation until all the behavior operations in the fracturing operation behavior sequence are executed, and obtaining the fracturing operation result corresponding to the fracturing operation behavior sequence.
And traversing all the fracturing operation behavior sequences in sequence according to the method, and outputting the fracturing operation results of all the fracturing operation behavior sequences to the evaluation module.
(VI) evaluation Module
And the evaluation module evaluates the fracturing operation results of each fracturing operation behavior sequence output by the fracturing operation module and selects an optimal fracturing operation behavior sequence.
The marine fracturing operation needs a stable ship attitude, but the ship attitude is influenced by marine interference factors, and meanwhile, the fracturing operation also generates interference force and moment on the ship in the action operation process, so that the ship attitude is influenced; according to the invention, marine environment state parameters can be set through the man-machine interaction module, and then the safety and effectiveness of the fracturing operation behaviors of all possible fracturing operation behavior sequences are evaluated under the same marine environment state parameter (namely marine environment interference parameter), so that the optimal fracturing operation behavior sequence under the sea condition is obtained. In the evaluation process, firstly, the fracturing operation behavior sequence with the fracturing operation result of 0 is eliminated, and the rest fracturing operation behavior sequences are comprehensively evaluated by adopting a multi-attribute decision method, for example, by comprehensively evaluating the attributes of the ship such as trim, heeling, stability, operation efficiency and the like, a group of optimal fracturing operation behavior sequences are selected and output to a knowledge storage module for storage.
(VII) virtual simulation environment module
The virtual simulation environment module is used for simulating the visual display of the marine environment and the test process. And constructing a virtual marine environment according to the marine environment state data (sea wind, sea current, surge and the like) set by the marine environment state setting unit, generating interference parameters of the marine environment (sea wind, sea current, surge and the like), and outputting the interference parameters of the marine environment to the ship operation module, the ship motion model and the fracturing operation module. Meanwhile, in order to effectively show the fracturing operation condition and the posture condition of the ship in the fracturing operation process, a virtual ship model and a fracturing system model are constructed; transmitting ship attitude data and position information output by a ship motion model to a ship model, and visually displaying the attitude of a ship by adopting a virtual technology in a virtual environment; and transmitting the fracturing operation result output by the fracturing operation module to a fracturing system model, graphically displaying the fracturing operation of the fracturing system by adopting a virtual technology in a virtual environment, and prompting the abnormal state of the fracturing operation in a warning mode.
The virtual simulation environment module visually displays the test process, so that the exchange efficiency between an operator and the test system is improved, the operator can comprehensively control the progress condition of the test, and the acquisition efficiency and quality of decision-making knowledge of marine ship fracturing operation are improved. The simulation of the virtual simulation environment on various ocean environment interference factors enriches the external interference factors suffered by ocean fracturing operation and enhances the authenticity of the ocean fracturing operation under the complex ocean interference factors.
(eight) knowledge storage module
The knowledge storage module stores the fracturing operation schemes of the fracturing ship under various sea conditions, and corresponding interference factors and ship platform operation schemes need to be stored in the process of storing the operation decision-making schemes, wherein the knowledge storage module comprises: the ship type of the fracturing ship, the initial state of the fracturing operation, the interference factors of marine environment and the like. The storage system adopts an Oracle database system and sequentially stores the fracturing ships under different sea conditions. And when the fracturing operation decision sequence under a certain sea condition is stored, informing the man-machine interaction module that the fracturing operation test under the sea condition is finished.
The equipment used for implementing the ocean oil and gas fracturing operation decision knowledge acquisition system comprises: 4 PC machines, 1 graphic workstation, a real-time computer communication network and 1 set of Oracle database management software.
The PC mainly configures: 4G memory, 1G display card, four-core processor, double display card and double display. The four PC machines respectively have the following operation tasks: the system comprises a running human-computer interaction module, a running ship operation module, a ship motion model, a running fracturing operation behavior module, a fracturing operation module, a running evaluation module and a knowledge storage module. 1 graphic workstation operates a virtual simulation environment module, and is mainly configured with: 4CPU, 32G memory, K6000 graphic display card. The real-time computer network connects 4 PCs and the graphic workstation together, and realizes real-time data interaction among all functional modules of the system. And the Oracle data management software is used for storing decision-making knowledge of the marine oil and gas fracturing operation.
The specific execution steps of the marine oil and gas fracturing operation decision knowledge acquisition system are as follows:
step1: the method comprises the steps of inputting a test initial parameter, a ship initial state parameter, a ship basic motion parameter, a marine environment state parameter and a fracturing operation initial parameter into a man-machine interaction module, inputting the test initial parameter and the ship basic motion parameter into a ship motion model, inputting the ship initial state parameter into a ship operation module, inputting the marine environment state parameter into a virtual simulation environment module, and inputting the fracturing operation initial parameter into a fracturing operation behavior module.
Step2: the ship operation module reads ship attitude data input by the ship motion model and marine environment interference factors input by the virtual simulation environment module, constructs a ship behavior operation set by taking the ship motion attitude and the external marine environment interference factors as constraint conditions, and outputs a ship operation behavior sequence to the ship motion model.
Step3: and the fracturing operation behavior module reads the initial parameters of the fracturing operation and constructs all possible marine fracturing operation behavior sequences according to the fracturing operation specifications.
Step4: the ship motion model determines the ship type and the test basic rule of a fracturing ship according to the ship basic motion parameters and the test initial parameters, sequentially receives the ship operation behavior set, the marine environment interference factors and the fracturing operation interference factors input by the ship operation module, the virtual simulation environment module and the fracturing operation module, resolves ship attitude data under the action of a test control time sequence, and outputs the resolved ship motion attitude to the ship operation module, the fracturing operation module, the evaluation module and the virtual environment simulation module according to the control time sequence.
Step5: the fracturing operation module reads a fracturing operation behavior sequence, ship attitude data and marine environment interference factors, and sequentially reads fracturing behavior operation steps in the fracturing operation behavior sequence according to a test control time sequence to respectively start a fracturing pump system model and a sand mixing system model to perform fracturing operation, wherein before each fracturing behavior operation, the fracturing operation environment is judged, if the fracturing operation environment is not met, the fracturing operation is stopped, and the fracturing result of the fracturing operation behavior sequence is 0; if the simulation result meets the requirement, executing the fracturing behavior operation to obtain the fracturing operation interference parameters of the fracturing behavior operation on the ship, outputting the fracturing operation interference parameters to the ship motion model, calculating the ship attitude parameters under a new interference condition by the ship motion model, reading the next fracturing behavior operation in the fracturing operation behavior sequence, judging the fracturing operation environment, repeating the steps in sequence until all the fracturing behavior operations in the fracturing operation behavior sequence are executed, obtaining the fracturing operation result corresponding to the fracturing operation behavior sequence, and completing one fracturing operation simulation. And then the fracturing operation behavior module inputs the next fracturing operation behavior sequence to the fracturing operation module, repeats step5 until all the fracturing operation behavior sequences are traversed to obtain fracturing operation results corresponding to all the fracturing operation behavior sequences, and outputs the fracturing operation results to the evaluation module.
Step6: and the evaluation module performs multi-attribute judgment analysis on the fracturing operation results of all the fracturing operation behavior sequences under the same sea condition to obtain an optimal fracturing operation behavior sequence.
And then changing the state parameters of the marine environment, and repeating step 2-step 6 to obtain the optimal fracturing operation behavior sequence under the corresponding marine conditions.
Step7: and storing the optimal fracturing operation behavior sequence, the ship operation decision scheme and the corresponding marine environment interference factors output by the evaluation module into a database management system of the knowledge storage module, and displaying the optimal fracturing operation behavior sequence, the ship operation decision scheme and the corresponding marine environment interference factors in the man-machine interaction module.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A decision-making knowledge acquisition system for marine vessel fracturing operation is characterized by comprising a man-machine interaction module, a vessel operation module, a vessel motion module, a fracturing operation behavior module, a fracturing operation module, a virtual simulation environment module, an evaluation module and a knowledge storage module;
the man-machine interaction module is used for setting marine environment state parameters, initial state parameters and motion parameters of a ship and initial parameters of fracturing operation;
the virtual simulation environment module is used for simulating marine environment and visualizing ship and fracturing operation;
the ship operation module generates ship operation parameters for eliminating ship attitude deviation according to the marine environment interference parameters sent by the virtual simulation environment module and the ship real-time attitude parameters sent by the ship motion model;
the ship motion module constructs a ship motion model containing marine environment interference and fracturing operation interference according to the initial state parameters and motion parameters of the ship set by the man-machine interaction module; calculating attitude parameters of the ship in real time according to the constructed ship motion model according to the fracturing operation interference parameters sent by the fracturing operation module, the marine environment interference parameters sent by the virtual simulation environment module and the ship operation parameters sent by the ship operation module;
the fracturing operation behavior module generates all possible fracturing operation behavior sequences according to the fracturing operation initial parameters set by the man-machine interaction module and sequentially outputs the fracturing operation behavior sequences to the fracturing operation module;
the fracturing operation module constructs a fracturing system model and carries out fracturing action operation on the fracturing system model according to a fracturing operation action sequence output by the fracturing operation action module, wherein before each fracturing action operation, whether the current operation condition is in a fracturing operation safety range or not is judged according to a ship attitude parameter sent by a ship motion model and an ocean environment interference parameter sent by a virtual simulation environment module, if not, the current fracturing action operation is stopped, and the fracturing operation result of the current fracturing operation action sequence is 0; if the current interference parameter meets the requirement, executing the current fracturing behavior operation, after the fracturing behavior operation is executed, solving the interference parameter of the current fracturing behavior operation on the fracturing operation of the ship by the fracturing system model, and outputting the interference parameter of the fracturing operation to the ship motion model; then, continuously judging whether the next fracturing action operation is carried out or not, repeating the operation till all action operations in the fracturing action sequence are executed, and obtaining a fracturing operation result corresponding to the fracturing action sequence; outputting a fracturing operation result corresponding to the fracturing action sequence to an evaluation module;
the evaluation module carries out safety and effectiveness evaluation on the fracturing operation results of all the fracturing behavior sequences under the same marine environment to obtain the optimal fracturing behavior sequence under the marine environment; and outputting the marine environment parameters, the optimal fracturing behavior sequence under the marine environment, the fracturing operation result and the evaluation result to a knowledge storage module for storage, and displaying the results by a human-computer interaction module.
2. The marine vessel fracturing operation decision knowledge acquisition system of claim 1, wherein the vessel operations module comprises a dynamic positioning unit and a vessel motion operations unit;
the dynamic positioning unit obtains the attitude offset of the ship according to the real-time attitude parameters of the ship sent by the ship motion model; generating operating parameters of power propulsion equipment distributed around the ship according to the ship attitude offset and marine environment interference parameters sent by the virtual simulation environment module, and eliminating the ship attitude offset;
when the dynamic positioning unit can not completely eliminate the ship attitude offset, starting a ship motion operation unit; the ship motion operation unit generates an operation parameter of a ship main propeller and an operation parameter of a ship position attitude according to the ship attitude offset, the marine environment interference parameter sent by the virtual simulation environment module and the operation parameter of the power propulsion device generated by the power positioning unit, and eliminates the ship attitude offset.
3. The decision-making knowledge acquisition system for marine vessel fracturing operation according to claim 1, wherein the evaluation module deletes the fracturing operation behavior sequence of which the fracturing operation result is 0 first after obtaining the fracturing operation results corresponding to all the fracturing operation behavior sequences in the same marine environment; and then performing multi-attribute decision analysis on other fracturing operation behavior sequences in the marine environment according to the state of the ship and the fracturing operation efficiency to obtain an optimal fracturing operation behavior sequence in the marine environment.
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