A deep-sea drilling and coring system based on seismic while drilling

Abstract

The present application discloses a deep-sea drilling coring system based on seismic while drilling, which relates to the technical field of geological exploration. The system includes: a coring drill string, a drill string assembly, a seismic source sub, an underwater node, a relay station, a deck control station, a umbilical cable, a winch, an underwater robot system, a derrick, a pulley, a top drive, and a drill pipe; the umbilical cable passes through the winch and the pulley in sequence, and then penetrates the hollow space inside the drill pipe from the first end of the drill pipe to reach the second end of the drill pipe, and then is connected to the coring drill string; the coring drill string is arranged on the drill string assembly; the first end of the drill pipe is connected to the top drive, and the pulley is fixed on the derrick; the underwater robot system is used to deploy the underwater node and the relay station underwater; the deck control station is communicatively connected to the coring drill string through the umbilical cable, and the coring drill string is communicatively connected to the seismic source sub; the underwater robot system, the underwater node, and the relay station are communicatively connected, and the underwater robot system is communicatively connected to the deck control station. The present application can improve the intelligent drilling ability.

Description

Technical Field

[0001] This application relates to the field of geological exploration technology, and particularly to a deep-sea drilling and coring system based on seismic while drilling. Background Art

[0002] At present, geological core drilling technologies such as wireline coring are used in hydrate drilling, ocean science drilling, deep-sea mineral drilling, etc. Wireline coring uses a combination of a core barrel and wireline fishing to obtain underground core data in real time, thus providing important data support for studying geological structures, reservoir distributions, evaluating development potential, and engineering geological surveys. Since a wireline is used to lower the coring tool inside the drill string, the drill string from the bit to the top drive is designed to be hollow, making it difficult to apply the logging-while-drilling technology in conventional oil and gas drilling to wireline coring. Therefore, the current wireline coring drilling process is a "blind drilling", that is, there is no logging-while-drilling technology to obtain downhole information in real time to guide drilling, and the overall level of informatization and intelligence is low. As the drilling depth increases, the formation conditions become more complex, and problems such as well collapse, stuck pipe, buried drill, low drilling efficiency, and poor coring quality are likely to occur in the case of "blind drilling". Summary of the Invention

[0003] The main purpose of the embodiments of this application is to propose a deep-sea drilling and coring system based on seismic while drilling to improve the intelligent drilling ability, the drilling and coring operation efficiency, and the quality of core samples.

[0004] To achieve the above object, the embodiments of this application propose a deep-sea drilling and coring system based on seismic while drilling, and the deep-sea drilling and coring system includes: a coring tool, a drill string assembly, a seismic source sub, an underwater node, a relay station, a deck control station, an umbilical cable, a winch, an underwater robot system, a derrick, a pulley, a top drive, and a drill string;

[0005] Wherein, the umbilical cable passes through the winch and the pulley in sequence, then penetrates the hollow space inside the drill string from the first end of the drill string to reach the second end of the drill string, and then is connected to the coring tool; the coring tool is arranged on the drill string assembly, and the drill string assembly is connected to the seismic source sub in combination; the first end of the drill string is connected to the top drive, and the pulley is fixed on the derrick;

[0006] The underwater robot system is used to deploy the underwater node and the relay station underwater;

[0007] The deck control station is communicatively connected to the coring tool through the umbilical cable, and the coring tool is communicatively connected to the seismic source sub;

[0008] The underwater robot system, the underwater node, and the relay station are communicatively connected, and the underwater robot system is communicatively connected to the deck control station.

[0009] In some embodiments, the deck control station is configured to send a seismic source signal to the coring tool through the umbilical cable;

[0010] The coring tool is configured to transmit the seismic source signal to the source sub;

[0011] The source sub is configured to generate vibrations in response to the seismic source signal.

[0012] In some embodiments, the deck control station is configured to send a seismic signal acquisition command to the underwater node;

[0013] The underwater node is configured to acquire seismic data in response to the seismic signal acquisition command;

[0014] The relay station is configured to receive and preprocess the seismic data;

[0015] The underwater robot system is configured to transmit the preprocessed seismic data to the deck control station.

[0016] In some embodiments, the deck control station is further configured to perform inversion and interpretation based on the preprocessed seismic data to obtain formation information for advanced detection; make a decision based on the formation information for advanced detection to obtain an optimization recommendation for drilling parameters; and control the operation of the coring tool according to the optimization recommendation for drilling parameters.

[0017] In some embodiments, the underwater robot system includes an underwater robot, a winch system, and an onshore control station communicatively connected via a CAN bus.

[0018] In some embodiments, the relay station and the underwater robot are connected in a wet pluggable manner.

[0019] In some embodiments, the underwater robot system, the underwater node, and the relay station are communicatively connected via a CAN bus;

[0020] The underwater robot system and the deck control station are communicatively connected via a CAN bus.

[0021] In some embodiments, the coring tool and the source sub are communicatively connected via Bluetooth.

[0022] In some embodiments, the deck booster cabinet boosts 380V alternating current to a target high voltage, and then the deck booster cabinet transmits the target high voltage to the motor of the coring tool through an optical slip ring and the umbilical cable.

[0023] In some embodiments, the umbilical cable is an optoelectronic composite cable, and the communication performed through the umbilical cable includes optical fiber communication and adopts a CAN bus communication protocol.

[0024] The embodiments of the present application include at least the following beneficial effects:

[0025] The deep-sea drilling coring system of the present application includes a coring drill tool, a drill tool assembly, a source short section, an underwater node, a relay station, a deck control station, an umbilical cable, a winch, an underwater robot system, a derrick, a pulley, a top drive and a drill string; through the present application, offshore geological core drilling such as hydrate drilling, ocean scientific drilling, and deep-sea mineral drilling can achieve large-scale closed-loop control both above and below the well, and has intelligent drilling capabilities. When drilling into complex formations, it no longer "drills blindly", greatly reducing the occurrence of accidents such as well collapse, stuck drill, and buried drill, and improving the efficiency of drilling and coring operations and the quality of core samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 An exemplary structural diagram of a deep-sea drilling coring system based on seismic while drilling provided in an embodiment of the present application;

[0028] Figure 2 A connection diagram of a deep-sea drilling coring system based on seismic while drilling provided in an embodiment of the present application;

[0029] Figure 3 An example diagram of lowering a drill string to the seabed provided in an embodiment of the present application;

[0030] Figure 4 An example diagram of deploying underwater nodes and relay stations through an ROV system provided in an embodiment of the present application;

[0031] Figure 5 This is an example diagram of conventional coring provided in an embodiment of the present application;

[0032] Figure 6 This is an example diagram of the seismic advance detection while drilling provided in an embodiment of the present application.

[0033] Reference numerals: 101 is a derrick, 102 is a pulley, 103 is an umbilical cable, 104 is a top drive, 105 is a driller's cabin, 106 is a deck control station, 107 is an on-water control station, 108 is a winch and reeling system, 109 is a winch, 110 is a drilling ship, 111 is an underwater robot, 112 is a relay station, 113 is an underwater node, 114 is a drill string, 115 is a seismic source sub, 116 is a drill string assembly, 117 is a core barrel, 118 is the seabed, 119 is an active high-frequency seismic wave. Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application detailed in the appended claims.

[0035] It can be understood that the terms "first", "second", etc. used in the present application can be used in this document to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the words "if", "when" used herein can be interpreted as "when...", "when...", or "in response to determining".

[0036] The terms "at least one", "multiple", "each", "any one", etc. used in the present application, at least one includes one, two or more than two, multiple includes two or more than two, each refers to each of the corresponding multiple, and any one refers to any one of the multiple.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0038] Before the embodiments of the present application are described in detail, some related technologies involved in the embodiments of the present application are described first, as follows:

[0039] Currently, in the process of conventional oil and gas exploration and development, the use of seismic while drilling technology can carry out borehole seismic without disturbing the drilling operation, obtaining high-precision formation information within dozens to hundreds of meters near the drill bit, which is used for advanced detection to guide the drilling operation. In wireline coring drilling, downhole motor coring tools convert the energy of drilling fluid into the power for rock breaking during drilling, improving the mechanical drilling rate and the drilling speed.

[0040] Disadvantages of the prior art:

[0041] (1) Conventional oil and gas seismic while drilling mainly includes two technologies, namely bit seismic while drilling and vertical seismic profile while drilling, according to the position of the seismic source. The seismic source of bit seismic while drilling is the vibration during the bit drilling, and the geophones are on the ground. When drilling in relatively soft formations and using polycrystalline diamond compact bits, the seismic wave form of the seismic source is not good, and satisfactory results cannot be obtained. For vertical seismic profile while drilling, the seismic source is a conventional seismic source (such as explosives, air guns, etc.) on the seabed or the sea surface, and the geophones are inside the downhole logging tool while drilling. Due to the requirement of wireline coring tools, it is impossible to install the downhole logging tool while drilling inside the drill string.

[0042] (2) The downhole motor coring tool uses drilling fluid as power and cannot achieve precise control of rotational speed, torque, and drilling pressure, resulting in the inability to adjust drilling parameters in real time according to the formation conditions, and the formation adaptability is poor.

[0043] (3) Conventional wireline coring drilling does not have high-speed communication between the wellhead and the downhole, and does not achieve large closed-loop control between the wellhead and the downhole. The level of automation and intelligent drilling is relatively low, resulting in problems such as poor safety, low operation efficiency, and low coring quality when encountering complex formations.

[0044] Referring to Figure 1 , an embodiment of the present application provides a deep-sea drilling coring system based on seismic while drilling. The deep-sea drilling coring system includes: a coring tool, a drill string assembly, a seismic source sub, an underwater node, a relay station, a deck control station, an umbilical cable, a winch, an underwater robot system, a derrick, a pulley, a top drive, and a drill string;

[0045] Among them, the umbilical cable passes through the winch and the pulley in sequence, and then penetrates the hollow space inside the drill string from the first end of the drill string to reach the second end of the drill string, and then is connected to the coring tool; the coring tool is arranged on the drill string assembly, and the drill string assembly is connected to the seismic source sub in combination; the first end of the drill string is connected to the top drive, and the pulley is fixed on the derrick;

[0046] The underwater robot system is used to deploy the underwater node and the relay station underwater;

[0047] The deck control station is communicatively connected to the coring tool through the umbilical cable, and the coring tool is communicatively connected to the seismic source sub;

[0048] The underwater robot system, the underwater node and the relay station are communicatively connected, and the underwater robot system is communicatively connected to the deck control station.

[0049] Optionally, the deck control station is configured to send an excitation source signal to the coring tool through the umbilical cable;

[0050] The coring tool is configured to transmit the excitation source signal to the source sub;

[0051] The source sub is configured to generate vibrations in response to the excitation source signal.

[0052] Optionally, the deck control station is configured to send a seismic signal acquisition command to the underwater node;

[0053] The underwater node is configured to acquire seismic data in response to the seismic signal acquisition command;

[0054] The relay station is configured to receive and preprocess the seismic data;

[0055] The underwater robot system is configured to transmit the preprocessed seismic data to the deck control station.

[0056] Optionally, the deck control station is further configured to perform inversion and interpretation based on the preprocessed seismic data to obtain formation information for advanced detection; make a decision based on the formation information for advanced detection to obtain an optimization suggestion for drilling parameters; and control the operation of the coring tool according to the optimization suggestion for drilling parameters.

[0057] Optionally, the underwater robot system includes an underwater robot, a winch system and an onshore control station communicatively connected through a CAN bus.

[0058] Optionally, the relay station and the underwater robot are connected in a wet pluggable manner.

[0059] Optionally, the underwater robot system, the underwater node and the relay station are communicatively connected through a CAN bus;

[0060] The underwater robot system and the deck control station are communicatively connected through a CAN bus.

[0061] Optionally, the coring tool and the source sub are communicatively connected through Bluetooth.

[0062] Optionally, the deck booster cabinet boosts 380V alternating current to a target high voltage, and the deck booster cabinet then transmits the target high voltage to the motor of the coring tool through an optical slip ring and the umbilical cable.

[0063] Optionally, the umbilical cable is an optical and electrical composite cable. The communication through the umbilical cable includes optical fiber communication and adopts the CAN bus communication protocol.

[0064] Next, specific application examples will be combined to introduce and explain the solution of the embodiment of the present application in detail.

[0065] Still referring to Figure 1 , the deep-sea coring system of this embodiment includes a downhole electric coring tool, a downhole seismic source sub, an underwater OBN (Ocean Bottom Node), an underwater relay station, a deck control station, an umbilical cable for the electric coring tool, and a winch. Among them, the ROV (Remote-Operated Vehicle) system (ROV, ROV deployment and recovery system, and ROV surface control station), derrick, pulley, top drive, driller's cabin, etc. are existing equipment on the drilling ship and are the main auxiliary equipment for completing the system functions. The ROV system is used to deploy and recover underwater equipment and provide a communication channel between the underwater equipment and the deck control station. The derrick is used to install the pulley and the top drive, and the top drive is used to raise and lower the drill string. The pulley, the umbilical cable for the electric coring tool, and the winch form a downhole electric coring tool deployment and recovery system.

[0066] The downhole electric coring tool is lowered and seated on the bottom hole assembly through the umbilical cable winch for the electric coring tool and is powered and communicated through the umbilical cable for the electric coring tool; when the coring is completed, it is recovered to the deck surface through the umbilical cable winch.

[0067] The downhole seismic source sub is connected to the bottom hole assembly, and above it is a drill string composed of drill collars, drill pipes, etc. The middle of the drill string is designed to be hollow and can pass through the coring tool and mud. The downhole seismic source sub and the downhole electric coring tool achieve wireless communication through Bluetooth and are powered by batteries. Since the seismic while drilling can detect the front dozens to hundreds of meters in advance and the seismic source energy required for different formations is different, in order to save power and adapt to the formation needs, a controllable excitation is adopted. That is, when it is necessary to detect the formation information in front by seismic while drilling, an excitation seismic source signal is sent from the deck control station to the downhole electric coring tool, and the downhole electric coring tool then forwards it to the downhole seismic source sub through Bluetooth, thereby exciting the seismic source.

[0068] The OBN and relay station are deployed to the seabed by the ROV and both are powered by batteries. The OBN, relay station, and ROV communicate via a wired CAN bus. The relay station and ROV are connected in a wet plug-and-play manner. When the deck control station sends a signal to activate the downhole electric coring tool, it also sends a seismic signal acquisition command to the OBN. The OBN starts to collect seismic data and sends the data to the relay station after collection. The relay station first preprocesses the seismic data collected by the OBN, and the processed data is uploaded to the deck control station through the ROV umbilical cable. At the same time, an original copy of the seismic data collected by the OBN and the preprocessed data are stored locally.

[0069] The deck control station is the control center of the entire system and is installed in the driller's cabin. The main functions of the deck control station include: issuing commands for seismic source activation and seismic acquisition; performing inversion and interpretation on the seismic data collected by the OBN to achieve advanced detection of the drilled formation; at the same time, based on the formation information obtained from the advanced detection, through artificial intelligence control, making intelligent decisions on optimization suggestions for drilling parameters; controlling the downhole electric coring tool for coring operations; and real-time monitoring of the operating status of the entire system.

[0070] As Figure 2 shown, the 380V distribution box on the deck supplies power to the umbilical cable winch for the electric coring tool and the downhole electric coring tool. The downhole electric coring tool needs to boost the 380V alternating current to high voltage through a deck booster cabinet, and then transmit the power to the motor on the downhole electric coring tool through an optical fiber slip ring and the umbilical cable. The deck control station is connected to the umbilical cable winch for the electric coring tool by an optical cable. The umbilical cable is an optical fiber composite cable. Therefore, the communication from the deck control station to the downhole electric coring tool is all fiber optic communication, using the CAN bus communication protocol. The deck control station is connected to the surface ROV control station by an optical cable. The ROV umbilical cable is an optical fiber composite cable. Therefore, the communication from the deck control station to the ROV is all fiber optic communication, using the CAN bus communication protocol. The ROV is connected to the relay station and the OBN by twisted pair, using the CAN bus communication protocol.

[0071] More specifically:

[0072] Step (1): As Figure 3 shown, after the drilling ship has taken its position, use drilling equipment such as the top drive, iron roughneck, pipe racking machine, slips, and power catwalk to connect the bottom hole assembly, downhole seismic source sub, drill collars, drill pipes, etc. into a drill string, lower it to the seabed, and determine the wellhead position.

[0073] Step (2): As Figure 4 shown, use the ROV system to lower and deploy the OBN and relay station to the seabed near the wellhead.

[0074] Step (3): As Figure 5As shown, conventional downhole coring tools are used to conduct drilling and coring until the downhole seismic source sub-section is completely inside the formation.

[0075] Step (4): As Figure 6 shown, lower the downhole electric coring tool to the bottom hole assembly. The driller's control station on the deck sends a seismic source excitation signal to the downhole seismic source sub-section to start seismic operations, and sends a seismic signal acquisition command to the OBN. The downhole seismic source sub-section generates active high-frequency seismic waves, and the OBN collects seismic data. After the collection is completed, the data is sent to the relay station. The relay station first preprocesses the seismic data collected by the OBN, and the processed data is uploaded to the deck control station through the ROV umbilical cable. At the same time, a copy of the original data and preprocessed data collected by the OBN is stored locally.

[0076] The deck control station performs inversion and interpretation on the seismic data collected by the OBN to achieve advanced detection of the drilled formation; at the same time, according to the formation information obtained from the advanced detection, through artificial intelligence control, intelligent decision-making on drilling parameter optimization suggestions is carried out. The driller manipulates the downhole electric coring tool for drilling and coring operations on the deck control station according to the drilling parameter optimization suggestions.

[0077] Step (5): Under the guidance of the seismic while drilling advanced detection, switch the downhole electric coring tool and the conventional downhole coring tool according to the formation information and operation needs to carry out drilling and coring operations, and perform adaptive seismic while drilling advanced detection operations. Repeat the above steps (3) and (4) until the predetermined drilling depth is reached.

[0078] The beneficial effects of this embodiment are:

[0079] It enables large closed-loop control of onshore and offshore geological core drilling such as hydrate drilling, ocean scientific drilling, and deep-sea mineral drilling, and initially has the ability of intelligent drilling. When drilling through complex formations, it no longer drills blindly, greatly reducing the occurrence of accidents such as well collapse, pipe sticking, and drill string burying, and improving the efficiency of drilling and coring operations and the quality of core samples.

[0080] In summary, this embodiment includes the following technical solutions:

[0081] (1) Replace the wire rope with an umbilical cable to achieve power supply and communication for the downhole electric coring tool;

[0082] (2) Achieve controllable excitation of the downhole seismic source through Bluetooth wireless communication;

[0083] (3) Achieve real-time transmission of the downhole seismic source signal through the ROV system;

[0084] (4) Achieve large closed-loop control of onshore and offshore through seismic while drilling detection and the downhole electric coring tool, and initially have the ability of intelligent drilling.

[0085] Compared with the prior art, this embodiment has at least the following beneficial effects:

[0086] (1) The downhole seismic source sub-section can excite seismic waves as needed, solving the problems that the seismic wave form of the drill bit seismic source in the drill-bit seismic-while-drilling technology is not good and satisfactory results cannot be obtained.

[0087] (2) The real-time transmission of downhole seismic source signals is achieved through the ROV system, solving the problems that the communication speed is slow through mud in the vertical seismic profile while drilling technology, and due to the need for wire ropes to deploy coring tools, downhole logging-while-drilling tools cannot be installed in the drill string, etc.

[0088] (3) The umbilical cable is used to replace the wire rope to achieve power supply and communication for downhole electric coring tools.

[0089] (4) Through seismic-while-drilling detection and downhole electric coring tools, large closed-loop control between the surface and the downhole is achieved, and the initial intelligent drilling ability is possessed. When encountering complex formations, "blind drilling" is no longer required, and drilling parameters can be quickly adjusted according to the advanced seismic-while-drilling detection information, greatly reducing the occurrence of accidents such as well collapse, pipe sticking, and drill string burying, and improving the efficiency of drilling and coring operations and the quality of core samples.

[0090] The embodiments described in the embodiments of this application are for more clearly explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art know that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0091] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer technical solutions than those shown in the figures, or combine some technical solutions, or different technical solutions.

[0092] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of this application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order different from those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0093] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can represent: only A exists, only B exists, and both A and B exist simultaneously. Among them, A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (piece) of the following" or its similar expression refers to any combination of these items, including any combination of a single item (piece) or multiple items (pieces). For example, at least one (piece) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0094] The preferred embodiments of the embodiments of this application have been described above with reference to the accompanying drawings, which does not limit the scope of rights of the embodiments of this application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of this application shall be within the scope of rights of the embodiments of this application.

Claims

1. A deep-sea drilling coring system based on seismic while drilling, characterized in that: The deep-sea drilling coring system includes: coring drill tools, drilling tool assembly, source short section, underwater node, relay station, deck control station, umbilical cable, winch, underwater robot system, derrick, pulley, top drive and drill string; The umbilical cable passes through the drawworks and the pulley in sequence, then passes through the hollow space in the drill string from the first end of the drill string to the second end of the drill string, and is then connected to the coring drill tool; the coring drill tool is arranged on the drill tool assembly, and the drill tool assembly is connected to the source sub assembly; the first end of the drill string is connected to the top drive, and the pulley is fixed to the derrick; The underwater robot system is used to deploy the underwater node and the relay station underwater; The deck control station is in communication connection with the coring drill tool via the umbilical cable, and the coring drill tool is in communication connection with the source sub; The underwater robot system, the underwater node and the relay station are communicatively connected, and the underwater robot system is communicatively connected to the deck control station; The deck control station is configured to send an excitation source signal to the coring drill tool via the umbilical cable; The coring drill is used to transmit the excitation source signal to the source sub; The source short section is used to generate vibration in response to the excitation source signal; The deck control station is used to send seismic signal acquisition commands to the underwater nodes; The underwater node is configured to collect seismic data in response to the seismic signal collection command; The relay station is used to receive and pre-process the seismic data; The underwater robot system is used to transmit the pre-processed seismic data to the deck control station.

2. A deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The deck control station is further used to perform inversion and interpretation based on the pre-processed seismic data to obtain advanced detection formation information; and to make decisions based on the advanced detection formation information to obtain drilling parameter optimization suggestions; The operation of the coring drill is controlled according to the drilling parameter optimization suggestion.

3. The deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The underwater robot system includes an underwater robot, a retraction and deployment system, and an above-water control station which are connected via CAN bus communication.

4. The deep sea drilling coring system based on seismic while drilling according to claim 3, characterized in that: The relay station and the underwater robot are connected in a wet plug-and-play manner.

5. The deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The underwater robot system, the underwater node and the relay station are connected via a CAN bus communication; The underwater robot system is connected to the deck control station via a CAN bus communication.

6. The deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The coring drill is connected to the source sub via Bluetooth communication.

7. The deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The deck booster cabinet boosts the 380V AC power to the target high voltage power, and the deck booster cabinet then transmits the target high voltage power to the motor of the core drilling tool through the photoelectric slip ring and the umbilical cable.

8. A deep sea drilling coring system based on seismic while drilling according to any one of claims 1 to 7, characterized in that: The umbilical cable is a photoelectric composite cable. The communication performed through the umbilical cable includes optical fiber communication and adopts the CAN bus communication protocol.

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