Deep sea drilling coring system based on earthquake while drilling

Abstract

The invention discloses a deep sea drilling coring system based on an earthquake while drilling, and relates to the technical field of geological exploration, the system comprises a coring drilling tool, a drilling tool combination, a seismic 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; the umbilical cable sequentially passes through the winch and the pulley, then penetrates through the hollow space in the drill string from the first end of the drill string to reach the second end of the drill string, and is further connected with the coring drilling tool; the coring drilling tool is arranged on the drilling tool assembly; the first end of the drill column is connected with the top drive; the pulley is fixed on the derrick; the underwater robot system is used for arranging the underwater nodes and the relay station underwater; the deck control station is in communication connection with the coring drilling tool through an umbilical cable, and the coring drilling tool is in communication connection with the seismic source short section; the underwater robot system, the underwater node and the relay station are in communication connection, and the underwater robot system is in communication connection with the deck control station. The intelligent drilling capability can be improved.

Description

Technical Field

[0001] This application relates to the technical field of geological exploration, and particularly to a deep-sea drilling 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 drilling 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 drilling. 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 informatization and intelligence levels are low. As the drilling depth increases, the formation conditions become more complex, and problems such as wellbore collapse, stuck pipe, buried drill, low drilling efficiency, and poor coring quality are likely to occur under the condition of "blind drilling". Summary of the Invention

[0003] The main purpose of the embodiments of this application is to propose a deep-sea drilling coring system based on seismic while drilling to improve the intelligent drilling ability, the drilling 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 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 repeater 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; Among them, 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; The underwater robot system is used to deploy the underwater node and the repeater station underwater; 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; The underwater robot system, the underwater node, and the repeater station are communicatively connected, and the underwater robot system is communicatively connected to the deck control station.

[0005] In some embodiments, the deck control station is configured to send a seismic source signal to the coring tool through the umbilical cable; The coring tool is configured to transmit the seismic source signal to the seismic source sub-section; The seismic source sub-section is configured to generate vibrations in response to the seismic source signal.

[0006] In some embodiments, the deck control station is configured to send a seismic signal acquisition command to the underwater node; The underwater node is configured to acquire seismic data in response to the seismic signal acquisition command; The relay station is configured to receive and preprocess the seismic data; The underwater robot system is configured to transmit the preprocessed seismic data to the deck control station.

[0007] 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 optimized drilling parameter recommendation; and control the operation of the coring tool according to the optimized drilling parameter recommendation.

[0008] In some embodiments, the underwater robot system includes an underwater robot, a deployment and retrieval system, and an onshore control station that are communicatively connected via a CAN bus.

[0009] In some embodiments, the relay station and the underwater robot are connected in a wet-mateable manner.

[0010] In some embodiments, the underwater robot system, the underwater node, and the relay station are communicatively connected via a CAN bus; The underwater robot system and the deck control station are communicatively connected via a CAN bus.

[0011] In some embodiments, the coring tool and the seismic source sub-section are communicatively connected via Bluetooth.

[0012] In some embodiments, a deck step-up cabinet steps up 380V alternating current to a target high voltage, and the deck step-up cabinet then transmits the target high voltage to the motor of the coring tool through an optical slip ring and the umbilical cable.

[0013] In some embodiments, the umbilical cable is an optical and electrical composite cable, and the communication through the umbilical cable includes optical fiber communication and uses the CAN bus communication protocol.

[0014] The embodiments of the present application at least include the following beneficial effects: The deep-sea drilling and coring system of the present application includes a coring drill tool, 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 string. With the present application, it is possible to achieve large closed-loop control of onshore and offshore geological core drilling such as hydrate drilling, ocean scientific drilling, and deep-sea mineral drilling, possess intelligent drilling capabilities, and when encountering complex formations, no longer drill blindly, greatly reducing accidents such as well collapse, pipe sticking, and drill pipe burial, and improving the efficiency of drilling and coring operations and the quality of core samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 FIG. is an exemplary structural diagram of a deep-sea drilling and coring system based on seismic while drilling provided by an embodiment of the present application; Figure 2 FIG. is a connection line diagram of a deep-sea drilling and coring system based on seismic while drilling provided by an embodiment of the present application; Figure 3 FIG. is an exemplary diagram of lowering the drill string to the seabed provided by an embodiment of the present application; Figure 4 FIG. is an exemplary diagram of deploying the underwater node and the relay station through the ROV system provided by an embodiment of the present application; Figure 5 FIG. is an exemplary diagram of conventional drilling and coring provided by an embodiment of the present application; Figure 6 FIG. is an exemplary diagram of seismic while drilling for advanced detection provided by an embodiment of the present application.

[0017] Reference numerals: 101 is the derrick, 102 is the pulley, 103 is the umbilical cable, 104 is the top drive, 105 is the driller's cabin, 106 is the deck control station, 107 is the onshore control station, 108 is the winch and reel system, 109 is the winch, 110 is the drilling ship, 111 is the underwater robot, 112 is the relay station, 113 is the underwater node, 114 is the drill string, 115 is the seismic source sub, 116 is the drill string assembly, 117 is the coring drill tool, 118 is the seabed, 119 is the active high-frequency seismic wave. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the objectives, technical solutions, and advantages of this application clearer and more understandable, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. When the following description involves 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 this application. They are merely examples of devices and methods that are consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0019] It can be understood that the terms "first", "second", etc. used in this 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 this application, the first information can also be referred to as the second information. Similarly, the second information can also be referred to as the first information. Depending on the context, the words "if", "when" as used herein can be interpreted as "when...", "while...", or "in response to determining".

[0020] The terms "at least one", "multiple", "each", "any one", etc. used in this application, "at least one" includes one, two, or more than two, "multiple" includes two or more than two, "each" refers to each one of the corresponding multiple, and "any one" refers to any one of the multiple.

[0021] 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 this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0022] Before elaborating in detail on the embodiments of this application, first, some related technologies involved in the embodiments of this application are described as follows: Currently, in the process of conventional oil and gas exploration and development, the use of seismic while drilling technology can conduct borehole seismic surveys without disturbing drilling operations, obtaining high-precision formation information within a range of dozens to hundreds of meters near the drill bit, which is used for advanced detection to guide drilling operations. In terms of wireline coring drilling, downhole motor coring tools convert the energy of drilling fluid into drilling rock-breaking power, improving the mechanical drilling rate and drilling speed.

[0023] Disadvantages of the prior art: (1)Conventional seismic while drilling for oil and gas is mainly divided into two technologies, namely, seismic while drilling with the bit and vertical seismic profiling while drilling, according to the position of the seismic source. The seismic source of seismic while drilling with the bit is the vibration during bit drilling, and the geophones are on the ground. In relatively soft formations and when 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 profiling 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 need for wireline coring tools, it is impossible to install downhole logging tools inside the drill string.

[0024] (2)Downhole motor coring tools use 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 formation conditions and poor formation adaptability.

[0025] (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 automated and intelligent drilling is relatively low, resulting in problems such as poor safety, low operation efficiency, and low core sampling quality when encountering complex formations.

[0026] 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; Among them, 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; 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 tool through the umbilical cable, and the coring tool 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.

[0027] Optionally, the deck control station is configured to send an excitation seismic source signal to the coring tool through the umbilical cable; The coring tool is configured to transmit the excitation seismic source signal to the seismic source sub; The seismic source sub is configured to generate vibrations in response to the excitation seismic source signal.

[0028] Optionally, the deck control station is configured to send a seismic signal acquisition command to the underwater node; The underwater node is configured to acquire seismic data in response to the seismic signal acquisition command; The relay station is configured to receive and preprocess the seismic data; The underwater robot system is configured to transmit the preprocessed seismic data to the deck control station.

[0029] 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.

[0030] Optionally, the underwater robot system includes an underwater robot, a winch system, and an onshore control station communicatively connected via a CAN bus.

[0031] Optionally, the relay station and the underwater robot are connected in a wet-mateable manner.

[0032] Optionally, the underwater robot system, the underwater node, and the relay station are communicatively connected via a CAN bus; The underwater robot system and the deck control station are communicatively connected via a CAN bus.

[0033] Optionally, the coring tool and the seismic source sub are communicatively connected via Bluetooth.

[0034] Optionally, a deck step-up cabinet steps up 380V AC to a target high voltage, and the deck step-up cabinet then transmits the target high voltage to the motor of the coring tool via an optical slip ring and the umbilical cable.

[0035] Optionally, the umbilical cable is an optical composite cable, and the communication via the umbilical cable includes optical fiber communication and adopts the CAN bus communication protocol.

[0036] Next, the solution of the embodiment of the present application will be introduced and described in detail with specific application examples.

[0037] Still referring to Figure 1, the deep - sea coring system of this embodiment includes downhole electric coring tools, downhole seismic source sub - joints, underwater OBN (Ocean Bottom Node), underwater relay stations, deck control stations, electric coring tool umbilical cables and winches. 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 underwater equipment and the deck control station. The derrick is used to install the pulley and top drive, and the top drive is used to raise and lower the drill string. The pulley, electric coring tool umbilical cable and winch form a downhole electric coring tool deployment and recovery system.

[0038] The downhole electric coring tool is lowered and seated on the bottom - hole assembly through the electric coring tool umbilical cable winch, and is powered and communicated through the electric coring tool umbilical cable; after the drilling and coring are completed, it is recovered to the deck surface through the umbilical cable winch.

[0039] The downhole seismic source sub - joint 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 the coring tool and mud. The downhole seismic source sub - joint and the downhole electric coring tool communicate wirelessly through Bluetooth and are powered by batteries. Since the seismic - while - drilling can detect the formation tens to hundreds of meters ahead in advance and different formations require different seismic source energies, in order to save power and adapt to the formation requirements, a controllable excitation method is adopted. That is, when it is necessary to detect the formation information ahead 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 - joint through Bluetooth, thereby exciting the seismic source.

[0040] The OBN and the relay station are deployed on the seabed through the ROV and are both powered by batteries. The OBN, relay station, and ROV communicate through a wired CAN bus. The relay station and the ROV are connected in a wet - plug - and - play manner. When the deck control station sends an excitation seismic source signal to the downhole electric coring tool, a seismic signal acquisition command is sent to the OBN at the same time. The OBN starts to collect seismic data, and after the collection is completed, the data is sent to the relay station. The relay station first pre - processes 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 pre - processed data are locally stored.

[0041] 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 excitation and seismic acquisition; inverting and interpreting the seismic data collected by 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 drill to carry out coring operations; and real-time monitoring of the operation status of the entire system, etc.

[0042] As Figure 2 shown, the 380V distribution box on the deck supplies power to the umbilical cable winch for the downhole electric coring drill and the downhole electric coring drill. Among them, the downhole electric coring drill needs to boost the 380V alternating current to high voltage through the deck step-up cabinet, and then transmit the power to the motor on the downhole electric coring drill through the optical-electrical slip ring and umbilical cable. The deck control station is connected to the umbilical cable winch for the downhole electric coring drill through an optical cable. The umbilical cable is an optical-electrical composite cable. Therefore, from the deck control station to the downhole electric coring drill, it is all fiber-optic communication, using the CAN bus communication protocol. The deck control station is connected to the underwater ROV control station through an optical cable. The ROV umbilical cable is an optical-electrical composite cable. Therefore, from the deck control station to the ROV, it is all fiber-optic communication, using the CAN bus communication protocol. The connection between the ROV and the relay station and OBN is through twisted pair, using the CAN bus communication protocol.

[0043] More specifically: 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 rack, slips, and power catwalk to connect the bottom hole assembly, downhole seismic source sub, drill collar, drill pipe, etc. into a drill string, lower it to the seabed, and determine the wellhead position.

[0044] 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.

[0045] Step (3): As Figure 5 shown, use a conventional downhole coring drill to carry out coring operations until the downhole seismic source sub completely enters the formation.

[0046] Step (4): As Figure 6 shown, lower the downhole electric coring drill to the bottom hole assembly. The deck control station in the driller's cabin issues a seismic source excitation signal to the downhole seismic source sub to start the seismic operation, and issues a seismic signal acquisition command to the OBN. The downhole seismic source sub emits 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, an original copy of the seismic data collected by the OBN and the preprocessed data are locally stored.

[0047] The deck control station performs inversion and interpretation on the seismic data collected by 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, intelligent decision-making on optimization suggestions for drilling parameters is carried out. The driller manipulates the downhole electric coring tool on the deck control station according to the optimization suggestions for drilling parameters to conduct coring operations.

[0048] Step (5): Under the guidance of the seismic advanced detection while drilling, switch the downhole electric coring tool and the conventional downhole coring tool according to the formation information and operation requirements to carry out coring operations, and perform adaptive excitation seismic advanced detection operations. Repeat the above steps (3) and (4) until the predetermined borehole depth is reached.

[0049] The beneficial effects of this embodiment are as follows: It enables large closed-loop control above and below the well for offshore geological core drilling such as hydrate drilling, ocean science drilling, and deep-sea mineral drilling, initially possessing intelligent drilling capabilities. When drilling through complex formations, it no longer drills blindly, greatly reducing accidents such as well collapse, pipe sticking, and drill pipe burial, and improving the efficiency of coring operations and the quality of core samples.

[0050] In summary, this embodiment includes the following technical solutions: (1) Replace the steel wire rope with an umbilical cable to achieve power supply and communication for the downhole electric coring tool. (2) Achieve controllable excitation of the downhole seismic source through Bluetooth wireless communication. (3) Realize real-time transmission of the downhole seismic source signal through the ROV system. (4) Achieve large closed-loop control above and below the well through seismic detection while drilling and the downhole electric coring tool, initially possessing intelligent drilling capabilities.

[0051] Compared with the prior art, this embodiment has at least the following beneficial effects: (1) The downhole seismic source sub-section can excite seismic waves as needed, solving the problems of poor seismic wave form of the bit seismic source and inability to obtain satisfactory results in the bit seismic while drilling technology.

[0052] (2) Realize real-time transmission of the downhole seismic source signal through the ROV system, solving the problems of slow communication speed through mud required by the vertical seismic profiling while drilling technology, and inability to install downhole logging-while-drilling tools in the drill string due to the need to lower the coring tool with a steel wire rope.

[0053] (3) Replace the steel wire rope with an umbilical cable to achieve power supply and communication for the downhole electric coring tool.

[0054] (4) Realize the large closed-loop control between the surface and downhole through seismic while drilling detection and downhole electric coring drill tools, and initially possess the intelligent drilling ability. When encountering complex formations, it is no longer necessary to "drill blindly". Instead, the 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 pipe burying, and improving the efficiency of drilling and coring operations and the quality of core samples.

[0055] 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 can 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.

[0056] 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.

[0057] 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 other than 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 that includes 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.

[0058] It should be understood that in this application, "at least one (item)" means one or more, and "multiple" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (one) of the following" or its similar expression refers to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b or c can mean: 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.

[0059] The preferred embodiments of the embodiments of the present application have been described above with reference to the accompanying drawings. This does not limit the scope of the rights of the embodiments of the present 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 the present application shall fall within the scope of the rights of the embodiments of the present 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, 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 winch and the pulley in sequence, and 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 then is 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 short sub assembly; the first end of the drill string 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 in communication connection with the coring drill via the umbilical cable, and the coring drill is in communication connection with the source short section; 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.

2. A deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The deck control station is used to send an excitation source signal to the coring drill through the umbilical cable; The coring drill is used to transmit the excitation source signal to the source sub; The seismic source short section is used to generate vibration in response to the excitation seismic source signal.

3. A deep sea drilling coring system based on seismic while drilling according to claim 1, characterized in that: The deck control station is used to send seismic signal acquisition commands to the underwater nodes; The underwater node is used 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.

4. A deep sea drilling coring system based on seismic while drilling according to claim 3, characterized in that: The deck control station is also used to perform inversion and interpretation based on the pre-processed seismic data to obtain the formation information of advance detection; and to obtain drilling parameter optimization suggestions based on the formation information of advance detection; The operation of the coring drill is controlled according to the drilling parameter optimization suggestion.

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

6. A deep sea drilling coring system based on seismic while drilling according to claim 5, characterized in that: The relay station and the underwater robot are connected in a wet plug-and-pull manner.

7. A 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.

8. 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.

9. 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 coring drill through the photoelectric slip ring and the umbilical cable.

10. A deep sea drilling coring system based on seismic while drilling according to any one of claims 1 to 9, characterized in that: The umbilical cable is an optoelectronic composite cable. The communication performed through the umbilical cable includes optical fiber communication and adopts the CAN bus communication protocol.

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