WO2024092886A1 - Heave compensation system for floating platform for ocean engineering survey - Google Patents

Abstract

The present invention relates to a heave compensation system for a floating platform for ocean engineering survey. The system comprises a control mechanism, an air compressor mechanism, a compensation hydraulic station mechanism, an upward heave compensation frame mechanism and a compensation energy storage mechanism, wherein the control mechanism is arranged on an operation platform on a sea-going ship, the air compressor mechanism and the compensation hydraulic station mechanism are arranged on a main deck of the sea-going ship, the upward heave compensation frame mechanism is arranged on a derrick of the sea-going ship, and the compensation energy storage mechanism is arranged on the upward heave compensation frame mechanism; the control mechanism is in control connection with the air compressor mechanism, the compensation hydraulic station mechanism, the upward heave compensation frame mechanism and the compensation energy storage mechanism; and the air compressor mechanism and the compensated hydraulic station mechanism are connected to the compensation energy storage mechanism. The heave compensation system provided by the present invention can allow a marine top drive drilling system to meet both the technological requirements of diamond wireline coring at a high rotation speed in a seabed hard rock stratum and the technological and functional requirements of low-speed rotary drilling and CPT sampling tool passage in seabed soft rocks.

Description

A heave compensation system for floating platform for marine engineering survey Technical Field

The invention belongs to the technical field of marine engineering survey, and in particular relates to a heave compensation system for a marine engineering survey floating platform.

Background technique

The floating drilling platform of offshore oil drilling produces periodic heave and sink motion under the action of waves, which causes the offshore top drive to produce reciprocating motion, causing changes in the drilling pressure at the bottom of the well, and even causing the drill bit to separate from the bottom of the well, affecting the drilling efficiency, reducing the life of the drill bit and drill pipe, causing operational safety hazards, and even leading to drilling failure and shutdown in bad weather. In order to reduce downtime and reduce drilling costs, appropriate compensation measures must be taken for the heave and sinking motion of the top drive system.

Summary of the invention

1. Technical issues to be resolved

In view of the existing technical problems, the present invention provides a heave compensation system for an offshore engineering survey floating platform, which solves the problem of setting up a heave compensation system that can meet the drilling top drive system requirements in a limited space on board.

(II) Technical solution

In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a control mechanism, an air compressor mechanism, a compensation hydraulic station mechanism, a rising and sinking compensation frame mechanism and a compensation energy storage mechanism;

The control mechanism is arranged on an operating platform on the seagoing vessel;

The air compression mechanism and the compensation hydraulic station mechanism are both arranged on the main deck of the seagoing vessel;

The rise and fall compensation frame mechanism is arranged on the derrick of the sea vessel;

The compensation energy storage mechanism is arranged on the rising and sinking compensation frame mechanism;

The control mechanism is respectively controlled and connected with the air compressor mechanism, the compensation hydraulic station mechanism, the rising and sinking compensation frame mechanism and the compensation energy storage mechanism;

The air compressor mechanism and the compensating hydraulic station mechanism are both connected to the compensating energy storage mechanism, and can provide air pressure power and hydraulic power to the compensating energy storage mechanism respectively;

The compensation energy storage mechanism is connected to the offshore top drive and is used for performing heave compensation for the offshore top drive in operation.

Preferably, the control mechanism comprises: an integrated control seat and a heave compensation control cabinet;

The heave compensation control cabinet is arranged in the VFD room and connected to the integrated control seat;

The integrated control seat is arranged in the driller's room;

The integrated control cabinet is respectively controlled and connected with the air compressor mechanism, the compensation hydraulic station mechanism, the rising and sinking compensation frame mechanism and the compensation energy storage mechanism.

Preferably, the compensation energy storage mechanism comprises: an energy storage component, a compensation oil cylinder component and a compensation control component;

The energy storage assembly, the compensation oil cylinder assembly and the compensation control assembly are all arranged on the rising and sinking compensation frame mechanism;

The energy storage component is connected to the compensation cylinder component for energy supply;

The compensation control component is respectively control-connected with the energy storage component and the compensation cylinder component;

The compensation control component is also control-connected to the integrated control cabinet.

Preferably, the energy storage assembly comprises: a piston accumulator, a working gas cylinder unit, a spare gas cylinder unit and a hydraulic pipeline unit;

The air compressor mechanism is connected to the working gas cylinder unit and the standby gas cylinder unit;

The working gas cylinder unit and the standby gas cylinder unit are both connected to the piston accumulator;

The compensation hydraulic station mechanism is connected to the piston accumulator;

The piston accumulator is connected to the compensation cylinder assembly for energy supply via the hydraulic pipeline unit;

The hydraulic pipeline unit is provided with an isolation valve;

The compensation control assembly is control-connected to the isolation valve.

Preferably, the compensating cylinder assembly comprises: a first compensating cylinder unit and a second compensating cylinder unit;

The first compensating cylinder unit has the same structure as the second compensating cylinder unit;

The first compensation cylinder unit and the second compensation cylinder unit are arranged on the heave compensation frame mechanism, and are respectively connected to the upper jump mechanisms on both sides of the offshore top drive to compensate for the heave of the offshore top drive.

Preferably, the first compensation cylinder unit comprises: an active heave compensation cylinder and a passive heave compensation cylinder;

The active heave compensation cylinder and the passive heave compensation cylinder are both connected to the piston accumulator by means of the hydraulic pipeline unit.

Preferably, the compensation hydraulic station mechanism comprises: a hydraulic station, a hydraulic control valve assembly and a hydraulic station control box;

The hydraulic control valve assembly is arranged on the hydraulic station to control the output of hydraulic pressure energy;

The hydraulic station control box is control-connected to the hydraulic control valve assembly;

The hydraulic control box is communicatively connected to the heave compensation control cabinet via a cable.

Preferably, the air compressor mechanism comprises: a high-pressure compressor, a high-pressure gas tank and a compensating gas valve control box;

The high-pressure compressor is connected to the high-pressure gas tank;

The high-pressure gas tank is provided with a compensating gas valve assembly;

The compensation gas valve control box is control-connected to the compensation gas valve assembly;

The compensation gas valve control box is communicatively connected to the heave compensation control cabinet via a cable;

The high-pressure gas tank is connected to the working gas cylinder unit.

Preferably, the integrated control seat comprises: a seat and a human-machine interaction device;

The human-computer interaction device is arranged on the seat;

The seat is arranged in the driller's room;

The human-machine interaction device is communicatively connected to the heave compensation control cabinet mechanism via a cable;

The human-computer interaction device is a device that integrates start-stop control, system operation status and emergency shutdown functions.

Preferably, the heave compensation control cabinet is provided with a PLC logic control module instruction set;

The PLC logic control module instruction set includes: a control instruction set of a compensation hydraulic station, a normal working instruction set of drill string heave compensation, a locking and unlocking control instruction set of a heave compensation frame, and a base plate compensation control instruction set.

(III) Beneficial effects

The beneficial effects of the present invention are:

1. The wave heave compensation system used in offshore areas adopts targeted compensation parameter design to meet the compensation needs of most working conditions. It also takes into account the capacity design of extreme special working conditions, thereby improving the applicability of the entire exploration platform, reducing the cost of use, and enhancing operational reliability.

2. The high-pressure air power station for drill string compensation and base plate compensation is integrated in a container design, which has obvious advantages from special structural design, modular assembly process, quick connection application environment to simplified well site pipelines, simple operation and maintenance, and ultimately improved cost-effectiveness.

3. The passive drill string compensation system is widely used because of its simple structure, energy saving and stability. It has high adaptability to compensation of different loads. It is equipped with an integrated gas-liquid accumulator and nitrogen cylinder to improve the compensation speed.

4. The integrated design of the high-pressure gas control valve group is installed in the high-pressure gas source container, which is matched with the industrial topology network design to facilitate centralized control.

5. The compensation structure is assembled together with the top drive, forming a double-layer truss structure. The top drive no longer has an anti-torsion frame, and the torque is directly transmitted through the heave compensation lower frame, which reduces the overall height and has a high degree of integration.

6. When the upper heave compensation frame is kept vertical relative to the hull, the lower heave compensation frame can be adjusted in the cross-sectional direction of the ship, so that the drill pipe can still be connected after the drill pipe is tilted due to the rolling or lateral movement of the ship.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an up-and-down heave compensation mechanism and a down-and-down heave compensation mechanism of a heave compensation system for an offshore engineering survey floating platform provided by the present invention;

FIG2 is a front structural schematic diagram of a heave compensation mechanism of a heave compensation system for an offshore engineering survey floating platform provided by the present invention;

FIG3 is a schematic side view of the structure of a heave compensation mechanism of a heave compensation system for a floating platform for marine engineering survey provided by the present invention;

FIG4 is a system block diagram of a heave compensation system for an offshore engineering survey floating platform provided by the present invention;

FIG5 is a control schematic diagram of a compensation valve of a heave compensation system for an offshore engineering survey floating platform provided by the present invention;

FIG6 is a schematic diagram of the gas-liquid control principle of a drill string passive compensation system for a floating platform for marine engineering survey provided by the present invention.

[Description of Reference Numerals]

1: Compensation cylinder; 2: Nitrogen bottle; 3: Piston accumulator; 4: Upper frame; 5: Pulley box; 6: Pulley; 7: Guardrail; 8: Pulley; A: Heave compensation upper frame; B: Heave compensation lower frame; C: Offshore top drive.

Detailed ways

In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

As shown in Figures 1 to 6: This embodiment discloses a heave compensation system for a floating platform for marine engineering survey, including: a control mechanism, an air compressor mechanism, a compensation hydraulic station mechanism, a heave compensation frame mechanism and a compensation energy storage mechanism. The control mechanism is arranged on the working platform on the sea-going vessel; the air compressor mechanism and the compensation hydraulic station mechanism are both arranged on the main deck of the sea-going vessel; the heave compensation frame mechanism is arranged on the derrick of the sea-going vessel; the compensation energy storage mechanism is arranged on the heave compensation frame mechanism; the control mechanism is respectively connected to the air compressor mechanism, the compensation hydraulic station mechanism, the heave compensation frame mechanism and the compensation energy storage mechanism.

The air compressor mechanism and the compensating hydraulic station mechanism are both connected to the compensating energy storage mechanism, and can provide air pressure power and hydraulic power to the compensating energy storage mechanism respectively; the compensating energy storage mechanism is connected to the offshore top drive C to perform heave compensation for the offshore top drive C in operation.

The control mechanism described in this embodiment includes: an integrated control seat and a heave compensation control cabinet; the heave compensation control cabinet is arranged in the VFD room and connected to the integrated control seat; the integrated control seat is arranged in the driller's room. The integrated control cabinet is respectively controlled and connected with the air compressor mechanism, the compensation hydraulic station mechanism, the heave compensation frame mechanism and the compensation energy storage mechanism.

The compensation energy storage mechanism in this embodiment includes: an energy storage component, a compensation cylinder component and a compensation control component; the energy storage component, the compensation cylinder component and the compensation control component are all arranged on the rising and sinking compensation frame mechanism.

The energy storage component is connected to the compensation cylinder component for energy supply; the compensation control component is respectively connected to the energy storage component and the compensation cylinder component for control; the compensation control component is also connected to the integrated control cabinet for control.

The energy storage assembly in this embodiment includes: a piston accumulator, a working gas cylinder unit, a spare gas cylinder unit and a hydraulic pipeline unit; the air compressor mechanism is connected to the working gas cylinder unit and the spare gas cylinder unit; the working gas cylinder unit and the spare gas cylinder unit are both connected to the piston accumulator; the compensating hydraulic station mechanism is connected to the piston accumulator.

The piston accumulator is connected to the compensation cylinder assembly for energy supply through the hydraulic pipeline unit; an isolation valve is provided on the hydraulic pipeline unit; and the compensation control assembly is control-connected to the isolation valve.

The compensation cylinder assembly in this embodiment includes: a first compensation cylinder unit and a second compensation cylinder unit; the first compensation cylinder unit and the second compensation cylinder unit have the same structure; the first compensation cylinder unit and the second compensation cylinder unit are arranged on the rising and sinking compensation frame mechanism, and are respectively connected to the upper jump mechanisms on both sides of the offshore top drive C, so as to compensate for the rising and sinking of the offshore top drive C.

In this embodiment, the first compensation cylinder unit includes: an active heave compensation cylinder and a passive heave compensation cylinder; the active heave compensation cylinder and the passive heave compensation cylinder are both connected to the piston accumulator by means of the hydraulic pipeline unit.

The compensation hydraulic station mechanism described in this embodiment includes: a hydraulic station, a hydraulic control valve assembly and a hydraulic station control box; the hydraulic control valve assembly is arranged on the hydraulic station to control the output of hydraulic pressure energy; the hydraulic station control box is control-connected to the hydraulic control valve assembly; the hydraulic control box is communicatively connected to the heave compensation control cabinet via a cable.

The air compressor mechanism described in this embodiment includes: a high-pressure compressor, a high-pressure gas tank and a compensating gas valve control box; the high-pressure compressor is connected to the high-pressure gas tank; a compensating gas valve assembly is provided on the high-pressure gas tank; the compensating gas valve control box is control-connected to the compensating gas valve assembly; the compensating gas valve control box is communicatively connected to the heave compensation control cabinet via a cable; the high-pressure gas tank is connected to the working gas cylinder unit.

The integrated control seat in this embodiment includes: a seat and a human-machine interaction device; the human-machine interaction device is arranged on the seat; the seat is arranged in the driller's room; the human-machine interaction device is communicatively connected with the heave compensation control cabinet mechanism via a cable; the human-machine interaction device is a device integrating start-stop control, system operation status and emergency shutdown functions.

In this embodiment, the heave compensation control cabinet is equipped with a PLC logic control module instruction set; the PLC logic control module instruction set includes: a control instruction set of the compensation hydraulic station, a normal working instruction set of the drill string heave compensation, a locking and unlocking control instruction set of the heave compensation frame, and a base plate compensation control instruction set.

The heave compensation system for the floating platform for offshore engineering survey provided in this embodiment has the following parameters: compensation mode: passive compensation; compensation capacity: the total weight of the drill bit (400m 127 drill bit weighs 75kN in the sea), drill collar (weighs 35kN in the sea) and top drive (40kN), and the initial compensation capacity is set to 150kN. Compensation stroke: the wave height under the operating condition is not more than 2.5m, and the compensation stroke is ±1.5m. Compensation speed: 0.8m/s.

Overall layout: The system components in this embodiment include: top drive pulley, deep compensation frame, high-pressure gas station, driller's room, piston accumulator, compensation cylinder, auxiliary pump station and pipeline system, etc.

Working principle: The operation of each equipment of the above compensation system is connected to the driller's room (general control room) through the bus for centralized control. The simplified operation principle diagram is shown in Figure 4. As the drilling platform rises and falls, the top drive pulley is connected to the hydraulic cylinders placed at both ends and moves up and down. The top drive pulley is connected to the piston rod of the hydraulic cylinder. The top drive and drill string load are supported by hydraulic pressure or air pressure. There is a diaphragm in the gas-liquid accumulator that communicates with the hydraulic cylinder and the gas cylinder. By adjusting the pressure of the gas cylinder, the liquid pressure can be changed. The rod chamber of the hydraulic cylinder is connected to the gas-liquid accumulator to achieve lubrication and control. When performing compensation control, the gas-liquid accumulator can directly flush a higher pressure liquid into the rod chamber of the hydraulic cylinder to reduce pressure drop and impact load.

The parameters of the high pressure gas source station in this embodiment are shown in Table 1.

Table 1 Main technical parameters

The heave compensation structure in this embodiment. The heave compensation upper frame A is suspended by steel wire rope and slidably connected to the guide rail of the tower. The heave compensation lower frame B is connected to the heave compensation upper frame A through a compensation oil cylinder and is suspended below the heave compensation upper frame A. The cylinder body of the compensation oil cylinder is hinged on the body of the heave compensation upper frame A. The piston rod of the compensation oil cylinder is connected to the marine top drive through a pin shaft. The heave compensation lower frame B is also slidably connected to the guide rail of the tower.

As shown in Figures 2 and 3, it is a schematic structural diagram of the heave compensation frame A, which consists of a frame body 4, a compensation cylinder 1 hinged on the upper frame body 4, a piston accumulator 3 and a guardrail 7 fixed on the upper frame body 4, a nitrogen bottle 2 fixed on the piston accumulator 3, a pulley box 5 fixed on both sides of the upper frame body 4, a pulley 8 fixed on both sides of the pulley box 5, and a pulley 6 connected to the inside of the pulley box by a pin.

The structure of the heave compensation lower frame B consists of the heave compensation lower frame body and the pulley. The offshore top drive C is connected to the heave compensation lower frame B by means of upper pin connection and lower fixed connection. The pulley of the heave compensation lower frame B is fixed with a lead screw. When the wave fluctuation causes the tower to bend slightly, the radial restriction of the offshore top drive C can be released by loosening the lead screw, thereby reducing the radial force exerted by the top drive on the drill string.

The design parameters of the heave compensation structure in this embodiment are shown in Table 2.

Table 2 Main technical parameters of heave compensation structure

High pressure gas control valve group:

In this embodiment, the system includes a passive heave compensation system for the drill string and a constant tension control system for the winch wire rope when the base plate is lifted and lowered.

The principle of the compensation gas valve control box is shown in Figure 5; the gas control valve group is modularly installed and concentrated on a mounting skid, which is vertically fixed to the side of the gas tank rack in a detachable manner.

Drill string heave compensation gas control valve group: It includes high-pressure gas cylinder charging valve (YV02), main isolation valve (YV01), bypass valve (YV04), high-pressure gas cylinder exhaust valve (YV03) and gas-liquid accumulator exhaust valve (YV05), among which the high-pressure charging valve is responsible for pressurizing and replenishing gas to the working group gas storage tank, the main isolation valve is responsible for the shutoff and connection of the large diameter between the working group gas storage tank and the gas-liquid accumulator, the bypass valve is responsible for the shutoff and connection of the small diameter between the working group gas storage tank and the gas-liquid accumulator, and the high-pressure gas cylinder exhaust valve and the gas-liquid accumulator exhaust valve are responsible for the decompression and deflation of the working group gas storage tank and the decompression and deflation of the gas-liquid accumulator respectively;

Base plate compensation gas control valve group: including base plate working gas cylinder charging valve (YV11) and base plate working gas cylinder exhaust valve (YV12). The base plate working gas cylinder charging valve is responsible for replenishing gas and pressurizing the base plate compensation working gas cylinder, and the base plate working gas cylinder exhaust valve is responsible for decompressing and venting the base plate working gas cylinder;

Gas-liquid compensation valve group system:

The principle of gas-liquid control of passive compensation of drill string is shown in Figure 6; the working principle characteristics of the passive compensation principle of one-sided drill string are described as follows:

The electromagnetic reversing valve and the hydraulically controlled one-way valve form a liquid charging and discharging valve group, which is used for system liquid replenishment and adjustment of the initial position of the compensation cylinder.

When the passive compensation system is working, the accumulator + charging and discharging valve group (the reversing valve is in the neutral position and does not work) + isolation valve group (YV06 loses power) + compensation hydraulic cylinder, the gas and liquid are compressed and released with the rise and fall of waves to complete the compensation work.

When drilling accidents such as drill string breakage or drill bit falling off occur during the operation of the compensation device, the compensation cylinder will suddenly lose its load, and the cylinder will rapidly retreat due to the expansion of air, causing a cylinder flushing accident. For this reason, an isolation valve group is designed in the hydraulic system. When the above accident occurs, the pressure sensor detects that the pipeline pressure suddenly drops sharply, and the isolation valve group (YV06 is energized) cuts off the oil circuit between the compensation cylinder and the piston accumulator, thereby avoiding the occurrence of a cylinder flushing accident.

The one-way valve and the sequence valve form a pressure balancing valve group, which is used to balance the pressure on the compensation cylinder side and the pressure on the piston accumulator side when the oil circuit between the compensation cylinder and the piston accumulator is cut off by the isolation valve, so that the pressures on both sides tend to be the same.

The compensating cylinder plug cavity is connected to the small nitrogen bottle equipped with the cylinder, which is beneficial to reduce the cylinder buffer, maintain the cleanliness of the gas in the cylinder, and reduce the erosion of the cylinder by the ocean.

The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations here, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims (10)

1. A heave compensation system for a floating platform for marine engineering survey, characterized in that it comprises: a control mechanism, an air compressor mechanism, a compensation hydraulic station mechanism, a heave compensation frame mechanism and a compensation energy storage mechanism;

   The control mechanism is arranged on an operating platform on the seagoing vessel;

   The air compression mechanism and the compensation hydraulic station mechanism are both arranged on the main deck of the seagoing vessel;

   The rise and sink compensation frame mechanism is arranged on the derrick of the sea vessel;

   The compensation energy storage mechanism is arranged on the rising and sinking compensation frame mechanism;

   The control mechanism is respectively controlled and connected with the air compressor mechanism, the compensation hydraulic station mechanism, the rising and sinking compensation frame mechanism and the compensation energy storage mechanism;

   The air compressor mechanism and the compensating hydraulic station mechanism are both connected to the compensating energy storage mechanism, and can provide air pressure power and hydraulic power to the compensating energy storage mechanism respectively;

   The compensation energy storage mechanism is connected to the offshore top drive and is used for performing heave compensation for the offshore top drive in operation.
2. The heave compensation system according to claim 1, characterized in that:

   The control mechanism includes: an integrated control seat and a heave compensation control cabinet;

   The heave compensation control cabinet is arranged in the VFD room and connected to the integrated control seat;

   The integrated control seat is arranged in the driller's room;

   The integrated control cabinet is respectively controlled and connected with the air compressor mechanism, the compensation hydraulic station mechanism, the rising and sinking compensation frame mechanism and the compensation energy storage mechanism.
3. The heave compensation system according to claim 2, characterized in that:

   The compensation energy storage mechanism comprises: an energy storage component, a compensation oil cylinder component and a compensation control component;

   The energy storage assembly, the compensation oil cylinder assembly and the compensation control assembly are all arranged on the rising and sinking compensation frame mechanism;

   The energy storage component is connected to the compensation cylinder component for energy supply;

   The compensation control component is controllably connected to the energy storage component and the compensation cylinder component respectively;

   The compensation control component is also control-connected to the integrated control cabinet.
4. The heave compensation system according to claim 3, characterized in that:

   The energy storage assembly comprises: a piston accumulator, a working gas cylinder unit, a spare gas cylinder unit and a hydraulic pipeline unit;

   The air compressor mechanism is connected to the working gas cylinder unit and the standby gas cylinder unit;

   The working gas cylinder unit and the standby gas cylinder unit are both connected to the piston accumulator;

   The compensation hydraulic station mechanism is connected to the piston accumulator;

   The piston accumulator is connected to the compensation cylinder assembly for energy supply via the hydraulic pipeline unit;

   The hydraulic pipeline unit is provided with an isolation valve;

   The compensation control assembly is control-connected to the isolation valve.
5. The heave compensation system according to claim 4, characterized in that:

   The compensating cylinder assembly comprises: a first compensating cylinder unit and a second compensating cylinder unit;

   The first compensating cylinder unit has the same structure as the second compensating cylinder unit;

   The first compensation cylinder unit and the second compensation cylinder unit are arranged on the heave compensation frame mechanism, and are respectively connected to the upper jump mechanisms on both sides of the offshore top drive to compensate for the heave of the offshore top drive.
6. The heave compensation system according to claim 5, characterized in that:

   The first compensation cylinder unit includes: an active heave compensation cylinder and a passive heave compensation cylinder;

   The active heave compensation cylinder and the passive heave compensation cylinder are both connected to the piston accumulator by means of the hydraulic pipeline unit.
7. The heave compensation system according to claim 1, characterized in that:

   The compensation hydraulic station mechanism comprises: a hydraulic station, a hydraulic control valve assembly and a hydraulic station control box;

   The hydraulic control valve assembly is arranged on the hydraulic station to control the output of hydraulic pressure energy;

   The hydraulic station control box is control-connected to the hydraulic control valve assembly;

   The hydraulic control box is communicatively connected to the heave compensation control cabinet via a cable.
8. The heave compensation system according to claim 7, characterized in that:

   The air compressor mechanism includes: a high-pressure compressor, a high-pressure gas tank and a compensation gas valve control box;

   The high-pressure compressor is connected to the high-pressure gas tank;

   The high-pressure gas tank is provided with a compensating gas valve assembly;

   The compensation gas valve control box is control-connected to the compensation gas valve assembly;

   The compensation gas valve control box is communicatively connected to the heave compensation control cabinet via a cable;

   The high-pressure gas tank is connected to the working gas cylinder unit.
9. The heave compensation system according to claim 8, characterized in that:

   The integrated control seat comprises: a seat and a human-machine interaction device;

   The human-computer interaction device is arranged on the seat;

   The seat is arranged in the driller's room;

   The human-machine interaction device is communicatively connected to the heave compensation control cabinet mechanism via a cable;

   The human-computer interaction device is a device that integrates start-stop control, system operation status and emergency shutdown functions.
10. The heave compensation control system according to claim 9, characterized in that:

    The heave compensation control cabinet is provided with a PLC logic control module instruction set;

    The PLC logic control module instruction set includes: a control instruction set of a compensation hydraulic station, a normal working instruction set of drill string heave compensation, a locking and unlocking control instruction set of a heave compensation frame, and a base plate compensation control instruction set.

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