256results about "Underwater drilling" patented technology

Integrated underwater rock drilling and splitting device, characterized in that it comprises: a supporting structure (1); a drilling unit (2) mounted on the support structure (1); a splitting unit (3) mounted on the support structure (1), wherein the splitting unit (3) and drilling unit (2) are arranged at intervals; and wherein the splitting unit (3) comprises a splitting rod (301) provided with a plurality of telescopic piston segments (302); a positioning and borehole alignment system comprising a positioning pin (401) and at least one auxiliary positioning device, wherein the positioning pin (401) is designed to bear against and be fixed to a rock body (7) and the auxiliary positioning device is arranged relatively fixedly on the support structure (1); a workstation switching mechanism (5), wherein the support structure (1) is arranged on the drive side at a switching end of the workstation switching mechanism (5); wherein the workstation switching mechanism (5) is configured as a rotary switching mechanism or a translation switching mechanism; wherein the rotary switching mechanism is configured to drive the support structure (1) to rotate so that the splitting unit (3) is able to move and be aligned with the drilling position of the drilling unit (2); and wherein the translation switching mechanism is configured to drive the support structure (1) to translate so that the splitting unit (3) is able to move and be aligned with the drilling position of the drilling unit (2); and a connecting rod (6), wherein the connecting rod (6) is adapted to be connected to a ship-based manipulator arm in order to adjust the underwater depth of the device.

The invention belongs to the technical field of marine geological exploration, and provides a static sounding device and method based on a seabed drilling machine. The device is detachably connected into a drill pipe of a seabed drilling machine, and specifically comprises a hoisting unit, a driving unit, a penetration unit and a static sounding probe which are sequentially connected from top to bottom, the driving unit comprises a lead screw driving shaft, an inner rotating frameless motor and a shell which are sequentially arranged from inside to outside. During sounding, the rotor of the inward-rotating frameless motor rotates to drive the penetration sleeve and the static sounding probe to penetrate into the stratum so as to obtain related data. The internal rotation frameless motor is adopted, so that the number of parts is greatly reduced, and the complexity is reduced; and the size of the whole structure in the vertical direction is greatly reduced, and the penetration stroke of the static sounding probe can be increased within the effective stroke of the drill pipe.

A natural gas hydrate in-situ drilling and drilling fluid treatment system, comprising an offshore control platform (16), a natural gas hydrate subsea in-situ drilling device, a disassembly and assembly servo system, a drilling fluid feeding system, a wellhead flowback drilling fluid treatment system, a hydrate decomposition gas treatment system, a wellhead flowback drilling fluid tailings treatment system, a buoyancy control system (15), and a main control electric-power communication support system (17) connected to each system and controlling same, wherein the natural gas hydrate subsea in-situ drilling device and the drilling fluid feeding system are separately detachably connected to the wellhead flowback drilling fluid treatment system; and the hydrate decomposition gas treatment system is separately connected to the wellhead flowback drilling fluid treatment system, the natural gas hydrate subsea in-situ drilling device and the drilling fluid feeding system. Using unattended automation technology realizes the operation of the natural gas hydrate in-situ drilling and drilling fluid treatment system, such that the production process is simplified, automation and modularization are achieved, and subsea in-situ drilling can be performed on a large scale, thus greatly reducing the operation costs.

Systems and methods for mobile offshore carbon capture and sequestration operations. One system includes a first installation featuring a direct air carbon dioxide capture (DAC) system, carbon dioxide dehydration, carbon dioxide compression and a second installation featuring carbon dioxide injection facilities to inject carbon dioxide into an underground reservoir or other suitable subsurface formation.

The invention relates to a water-resisting and water-pumping integrated device for a water-rich stratum foundation pit, and belongs to the field of water-resisting and water-pumping device.The water-resisting and water-pumping integrated device comprises a first barrel, a supporting assembly is installed on the outer side of the first barrel, a water-resisting assembly is arranged below the supporting assembly, a shell is arranged below the water-resisting assembly, and a first through hole is formed in the shell; a first through hole is formed in the first cylinder body, a convex plate is fixedly connected to the first cylinder body, a second cylinder body is fixedly arranged at the bottom of the first cylinder body, a guide drilling tool is installed at the bottom of the second cylinder body, a drilling frame is fixedly arranged on the outer side of the guide drilling tool, and an inner plate and a water pump are installed in the first cylinder body. The water pumping device solves the problems that an existing water pumping device cannot adapt to the gravel stratum for use, cannot automatically increase the self weight while pumping water so as to go deep into the gravel stratum for continuous water pumping, and cannot adapt to uneven wall surfaces on the two sides of a construction foundation pit to achieve the water insulation function.

The invention discloses underwater rock drilling and splitting integrated equipment and a working method thereof, and relates to the field of underwater rock breaking. The equipment comprises a bearing structure, a drilling unit, a splitting unit, a positioning and hole aligning system and a connecting rod; the drilling unit carries out drilling operation, the position of the drilling unit and the position of the splitting unit are rapidly switched on the same equipment through the station switching mechanism, the splitting unit can be aligned to the drilling position of the drilling unit, and the positioning and hole aligning system guarantees that a splitting rod is accurately inserted into a drilled hole. Through a non-blasting drilling and splitting mode, vibration / noise pollution is reduced, the environmental protection requirement is met, through a mode of switching the drilling unit and the splitting unit, continuous connection and splitting after drilling operation are promoted, the operation efficiency can be improved, and the time cost and the labor cost of frequent replacement of equipment are reduced; compact integrated design is adopted, the equipment size is reduced, the connecting rod is matched with the shipborne mechanical arm, depth adjustment is achieved, and the device is suitable for the narrow environment.

The invention discloses a small hole heat conduction and gas migration channel construction system and method based on seabed horizontal directional drilling, and relates to the technical field of ocean engineering and energy exploitation. A sea surface operation module is used for controlling all modules of the system to work cooperatively and supplying energy to the system; the seabed drilling guide module is used for realizing layer-entering drilling and channel pre-construction; the signal detection module is used for monitoring the spatial position and attitude parameters of the seabed drilling guide module in a seabed bottom layer in real time; the small hole perforation flow guide module is used for constructing a heat conduction and gas migration channel network after the drill bit enters a target hydrate layer; after the heat conduction and gas migration channel network is formed, the seabed drilling guide module continues to drill out of the seabed bottom layer, and a channel formed by the seabed drilling guide module is used for dragging a pipeline into a reservoir. A reusable mining channel suitable for the deep sea environment is constructed, the gasification efficiency is effectively improved, and stratum disturbance and energy consumption are reduced.

The present invention belongs to the technical field of underwater drilling and blasting, and in particular, is a combined protective device of a bubble curtain and a vibration reduction hole for underwater drilling and blasting, comprising a bedrock, an air outlet and a fixed rope, wherein a vibration reduction hole is arranged inside the bedrock, a clamp is fixed at the lower left side of the air outlet, a counterweight is arranged below the fixed rope, a first leather hose is connected above the bubble curtain tube, and a connecting mechanism is installed above the first leather hose. The combined protective device of a bubble curtain and a vibration reduction hole for underwater drilling and blasting removes water from the vibration reduction hole through bubbles generated by the bubble curtain tube, thereby solving the problem that water in the hole cannot be removed, and enhancing the shock-absorbing effect of the vibration reduction hole. There is no need to set up multiple rows of vibration reduction holes, thereby reducing costs. A large number of bubbles are removed from the orifices of multiple vibration reduction holes, thereby forming a stable bubble curtain, which has a better weakening effect on underwater shock waves than traditional bubble curtains, and multiple bubble curtain tubes reduce the failure rate.

The invention provides a deepwater drilling method for inhibiting bottom stratum erosion of a multi-wellhead suction pile and the suction pile. The drilling method comprises the steps that guide pipes and pre-inclined casing pipes are prefabricated and installed at a plurality of wellheads at the top of a pile cylinder to form the suction pile, the pre-inclined casing pipes and the guide pipes at the same wellhead are sequentially arranged in a sleeving mode from inside to outside, and the pre-inclined casing pipes and the guide pipes are arranged at the same wellhead in a sleeving mode from inside to outside; the shaft sleeve is coaxial with the wellhead; the suction pile is conveyed to a water entry position opposite to the drilling position; the suction pile is put down and penetrates into the set position of the stratum; a first well hole with the preset depth is drilled downwards in each pre-inclined casing pipe, and a first casing pipe is placed downwards in each first well hole; cement is injected into the first casing pipe for well cementation, so that the preset pressure intensity is achieved, and stratum erosion is restrained; and a second well hole with the preset depth is drilled downwards in the first casing pipe, a second casing pipe is placed downwards in the second well hole, well drilling is completed, erosion of the bottom stratum of the pile barrel can be restrained, and stage well drilling operation can be completed safely and efficiently.

The invention belongs to the field of marine drilling, relates to a data analysis technology, and aims to solve the problem that control parameters cannot be reasonably set when set numerical analysis results of the same control parameter are inconsistent in the prior art, in particular to an intelligent control system for marine fine pressure control drilling based on an AI technology. Comprising a parameter control module, a compensation control module, a protection adjustment module and a protection optimization module which are connected in sequence. The parameter control module is used for performing parameter control analysis on the seabed drilling equipment; a plurality of control groups are generated, deviation coefficients of the control groups are calculated, and set optimization values are marked through the deviation coefficients; the set optimization value is sent to a compensation control module; according to the method, the problem of control instruction conflict caused by multi-source monitoring parameters is effectively solved, meanwhile, the wellbore blockage risk caused by control lag is avoided, and the safety and control precision of deep sea drilling operation are improved.

The invention belongs to the technical field of overwater drilling, and provides an overwater drilling operation platform which comprises a platform frame, a drilling station, a propulsion system station, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders, a plurality of hydraulic cylinders and a plurality of hydraulic cylinders. The platform frame is sequentially provided with a plurality of containing spaces in the same direction. The wood plate is laid on the top of the platform frame; the buoy is arranged in the containing space and fixedly connected with the platform frame, an annular space and a counterweight space are arranged in the buoy, and the annular space surrounds the exterior of the counterweight space; the buoyancy adjusting assembly is arranged in the annular space; the counterweight device is arranged in the counterweight space; the drilling machine is arranged at the drilling station; and the propelling system is arranged at the propelling system station. Through organic combination of the platform frame, the buoy, the buoyancy adjusting assembly, the counterweight device, the drilling machine, the propelling system and other parts, the functions of stable floating, flexible movement, accurate drilling, safe operation and the like of the platform are achieved.

The invention discloses an oil exploitation underground injection-production device with an anti-blocking function, and relates to the technical field of offshore drilling and oil extraction, the oil exploitation underground injection-production device comprises a drill rod and a drill bit, and further comprises a fixing cylinder rotationally connected to the top of the drill bit and installed at the bottom of the drill rod, and a plurality of water holes are formed in the drill bit in a penetrating mode; the driving mechanism is mounted in the fixed cylinder and is used for driving the drill bit to rotate; the linkage eye cleaning mechanism comprises a turntable mounted on the driving mechanism and a plurality of ejector rods mounted on the turntable; the sub-control mechanism comprises an adjusting seat mounted in the fixed cylinder and an elastic reset assembly mounted outside the ejector rod; according to the technical scheme, all the ejector rods are driven to sequentially clean blockages in all the water holes, the smoothness of the water holes is guaranteed, the problem that the water holes are blocked by rock debris generated by well drilling is solved, all the ejector rods are driven to sequentially clean the blockages in all the water holes, and the problem that the throughput of drilling fluid is affected when the water holes are cleaned at the same time is solved.

The invention discloses a deepwater seabed drilling integrated control system, a control method, equipment, a device and a storage medium. The system comprises a deck slurry pump control unit, a deck cementing pump control unit, an electric drilling tool control unit, an underwater continuous pipe system control unit, an underwater iron roughneck control unit and an underwater calandria system control unit. The deck slurry pump control unit and the deck cementing pump control unit are both arranged on water; the electric drilling tool control unit, the underwater continuous pipe system control unit, the underwater iron roughneck control unit and the underwater calandria system control unit are all arranged underwater; the electric drilling tool control unit, the underwater continuous pipe system control unit, the underwater iron roughneck control unit and the underwater calandria system control unit are connected with the deck cementing pump control unit; and the underwater continuous pipe system control unit, the underwater iron roughneck control unit and the underwater calandria system control unit are connected with the deck slurry pump control unit. The method can be widely applied to the technical field of seabed drilling.

The invention relates to a long-distance land-to-sea horizontal directional drilling submarine cable landing construction method for rock-soil staggered geology. The method comprises the following steps: (1) construction preparation; (2) preparing slurry; (3) rock section guide drilling; (4) forward pushing and reaming of the rock section; (5) guiding and drilling a soil layer; (6) mounting a bracket and connecting the bracket with a drill rod; (7) grading stretching and expanding of the rock sections; (8) mounting a steel sleeve on the rock section; (9) staged stretching and expanding of the remaining soil layer; and (10) the pipeline is dragged back in a segmented mode. According to the invention, the stability of a soil layer and the safety of drill rod equipment during directional drilling and reaming construction of a rock layer section are effectively ensured. The problems that follow-up pipelines are dragged back and stuck due to hole collapse and stepped holes easily caused by reaming under the rock-soil interlaced geological condition and breakage occurs during long-distance penetrating drill rod connection are solved, and guarantee is provided for high-precision green and safe construction of long-distance land-to-sea horizontal directional drilling submarine cable landing construction under the rock-soil interlaced geological condition.

According to the environment-friendly drilling ship and the using method thereof, the environment-friendly drilling ship comprises a moving mechanism and a mounting frame arranged on the moving mechanism, a submerged drill bit is arranged on the mounting frame and comprises a base body and a rotary disc arranged on the base body, a guide beam is arranged on the rotary disc, and the guide beam is arranged on the base body. A positioning drill bit is arranged at the end of the guide beam, and guide frames are arranged on the two sides of the guide beam respectively. The hydraulic rod is arranged on the rotary disc, accurate positioning can be achieved through the positioning drill bit in the middle, the drill rod driven by the motor and the hydraulic rod driven by the driving cylinder are combined, rapid drilling can be conducted through the drill rod, and rapid conversion is conducted through the action of the rotary disc to drive the hydraulic rod to expand holes. On one hand, rock on the hole wall can be extruded to cause cracks and reduce the blasting difficulty, and on the other hand, due to the acting force on the rock on the hole wall, holes are formed in the hole wall, more and different spaces are provided for filling explosives in the later period, and the blasting strength and effect are improved.

The invention discloses a movable deep-sea large-depth rock core sampling drilling machine, and relates to the technical field of rock core sampling, the movable deep-sea large-depth rock core sampling drilling machine comprises a main machine and a drilling unit assembled at the front end of the main machine, and the drilling unit is used for executing drilling operation; the multiple drill rod drilling tools are arranged on the main machine in a stacked mode, and a conveying unit used for conveying the drill rod drilling tools to the front end is arranged on the main machine; the drill rod processing arm is arranged on the drilling unit in a sliding manner; comprising an output motor. According to the movable deep-sea large-depth core sampling drilling machine, the drilling machine stretching arm is driven to stretch and contract in the horizontal direction so as to drive the drilling unit to incline forwards or swing backwards along the rotating shaft, so that the drilling unit is deflected to a proper angle and is nearly perpendicular to the drilling ground, and it is guaranteed that drilling force is stable; and the bearing-feeding action is completed through the arrangement of the drill rod processing arm, so that the replacement of the drill rod and the drill tool is simpler.

Underwater drilling assemblies and systems are disclosed. The underwater drilling assemblies and systems include drill assemblies, frames for drill assemblies, and connection flange assemblies to be fastened to a ship skin. The underwater drilling assemblies and systems further include waste cartridges and automatic air-bleed valve assemblies.

The invention belongs to the technical field of offshore wind power construction, and discloses an offshore wind power platform single pile auxiliary piling device and method.The device comprises a plurality of rock breaking units distributed at the lower end of a single pile at intervals in the circumferential direction, and each rock breaking unit comprises a connecting piece, a power unit and a drill rod; the upper end of the connecting piece is fixed to the lower end of the single pile, and a power mounting cavity is formed in the connecting piece; the power unit is arranged in the power mounting cavity; the upper end of the drill rod is connected with the power unit, and the lower end of the drill rod penetrates out of the lower end of the connecting piece and is provided with a drill bit. The method solves the problems that according to a traditional method that a hydraulic impact hammer is directly used for pile sinking, bearing force eccentricity is likely to happen at the critical point of the hammer encountering a hard stratum, the puncture slippage phenomenon is generated, and certain potential safety hazards are caused to installation of equipment such as a generator set in the later period.

The invention relates to the technical field of rock drilling, in particular to a hydraulic rock drilling machine for underwater construction, and solves the problems that in the existing underwater rock drilling construction process, silt particles easily permeate into the rock drilling machine along with reciprocating motion of a crushing drill rod, sealing failure and hydraulic oil leakage are caused, sealing stability cannot be guaranteed through single gas injection isolation, and the rock drilling efficiency is high. The rock drilling machine comprises a rock drilling mechanism, the rock drilling mechanism comprises a ventilation driving assembly, and an air injection isolation rock drilling assembly is installed below the ventilation driving assembly; the ventilation driving assembly comprises a ventilation hood, a plurality of one-way ventilation units are installed on the outer side of the bottom end of the ventilation hood, and each one-way ventilation unit comprises a conical air guide sleeve. The rock drill is subjected to multi-channel gas injection isolation, permeation of silt particles can be effectively avoided, sealing stability is kept, and efficient and stable rock drilling operation is achieved through hydraulic and electric synchronous driving.

The invention discloses a radial well cluster mining system and method for deep sea natural gas hydrate and shallow gas. The small and medium-sized workboat is sequentially connected and fixed with the seabed drilling machine and the multi-well guide suction anchor, and the small and medium-sized workboat controls the seabed drilling machine through an umbilical cable to complete drilling and arrangement of a vertical well and an inclined well of drilling and fixing integrated hydrate in the multi-well guide suction anchor; the vertical well and the inclined well are connected with a multi-pipe Christmas tree arranged on the multi-well guide suction anchor, and then the multi-pipe Christmas tree is connected with a mining and transportation pipeline through a seabed supercharging electric submersible pump to form a natural gas hydrate one-machine multi-well type radial well cluster efficient mining and transportation path. According to the hydrate anchor base radial well cluster mining system, the mining range is greatly enlarged, the mining efficiency is improved, integrated drilling and one-machine multi-well arrangement are achieved through the seabed drilling machine, the operation cost is remarkably reduced, the drilling and mining efficiency is improved, and the integrated operation process of drilling, well cementation, well completion and mining of the deep sea hydrate reservoir is achieved.

The invention belongs to the technical field of deepwater drilling, and discloses a deepwater drilling system and a deepwater drilling method. The deepwater drilling system comprises a drilling ship, a waterproof unit, a regulation and control device, a blowout prevention device and a drilling device. The upper end of the waterproof unit is connected with a drilling ship and provided with a first penetrating channel. The regulation and control device is arranged at the lower end of the waterproof unit and provided with a plurality of connecting channels. The connecting channel has an open state and a closed state, and in the open state, the first penetrating channel communicates with the outside through the connecting channel. And the blowout preventer is arranged at the wellhead and is connected with the waterproof unit. And the first penetrating channel can be communicated with a second penetrating channel of the blowout preventer. The drilling device is arranged on the drilling ship and penetrates through the first penetrating channel, the second penetrating channel and the well mouth. The well drilling device is provided with a conveying channel, and drilling fluid can be conveyed to the lower end of the well drilling device through the conveying channel. When the system is used for drilling operation, the pressure borne by a stratum at a wellhead can be effectively reduced, and stratum fracturing is avoided.

The present invention discloses a spiral pile type conductor frame device for an offshore booster station and a construction method thereof, the device comprising a conductor frame unit, a spiral pile unit and an intermediate connection pile shoe unit; the conductor frame unit comprises a vertical chord and an inclined chord; the spiral pile unit comprises a straight portion at the top and a spiral portion at the bottom, the spiral pile unit is detachably fixedly arranged at the end of the intermediate connection pile shoe unit; the intermediate connection pile shoe unit comprises a plurality of groups of pile shoe clamps and hoop structures arranged horizontally at intervals and hingedly connected. The conductor frame device of the present invention can facilitate the connection and installation of the conductor frame unit and the spiral pile unit by setting the intermediate connection pile shoe unit, and in addition, the spiral pile is used to replace the existing pile legs, and then by abutting the lower end of the inclined chord against the seabed, the bottom surface of the pile shoe clamp located at the bottom abuts against the seabed surface, which plays the role of an anti-sinking plate and improves the bearing capacity of the entire conductor frame device.

The present invention relates to a deep-water bare rock punching and drilling rectangular groove rock-embedded double-walled steel cofferdam and a construction method, which uses a long-arm excavator to comprehensively and thoroughly excavate and clean the riverbed, especially the rectangular groove; controls the sinking and deviation correction of the double-walled steel cofferdam through compartment water injection and anchoring systems, symmetrically and evenly injects water into each compartment to allow the steel cofferdam blade to smoothly embed in the groove; finally, the foundation is cleared and the bottom is sealed with concrete. The beneficial effects of the present invention are: utilizing the operating advantages of the excavator, such as strong power, great force, fast speed, and high efficiency, not only achieves the purpose of cleaning riverbed garbage, but also reduces the steel cofferdam foundation clearing time and shortens the construction period; combined with an intelligent control system for construction control, improves the safety of construction personnel and construction efficiency, solves the problems of difficult and low efficiency construction of steel cofferdams in deep-water steep bare rock environments, and has significant economic, environmental and social benefits.

The invention discloses a marine natural gas hydrate in-situ drilling and production robot which comprises a drilling group base body, the drilling group base body is of a cylindrical structure, the drilling group base body is sequentially connected with a large motor box and a data acquisition instrument box, the data acquisition instrument box is connected with a front small motor box, and a large motor is arranged in the large motor box and connected with a planetary gear assembly; the front small motor box is connected with a central shaft, the central shaft is sequentially sleeved with a front movement mechanism and a rear movement mechanism, the end part of the central shaft is connected with a rear small motor box, the front small motor box controls the front movement mechanism, the rear small motor box controls the rear movement mechanism, and the rear small motor box is connected with a post-processing container; a center pipe is arranged on the planetary gear assembly, a flow channel is arranged in the center of the center pipe, flow channel teeth are arranged on the periphery of the end of the center pipe, and a plurality of roller bits are arranged on the outer edge of the drill group base body towards the well bottom face. The problem that in the existing marine natural gas hydrate exploitation process, the integrity and stability of a shaft are damaged is solved.

The utility model discloses a multi-head drilling machine driven by a submersible drilling machine, which comprises a lifting cross beam, a submersible drilling machine module, a multi-head drilling linkage box and a drill bit module, the lifting cross beam is fixedly connected with the submersible drilling machine module, the submersible drilling machine module is connected with the input end of the multi-head drilling linkage box, and the output end of the multi-head drilling linkage box is connected with the drill bit module. The transmission pipe module is arranged between the inner wall of the box body shell and the gear module and used for perfecting the working environment of the multi-head drilling machine during construction or pouring a concrete wall, the drill bit module comprises a plurality of drill bits, and the number of the drill bits is the same as that of the linkage gears; the submersible drilling machine module is driven by the lifting drill rod to drive all the linkage gears to rotate, and each linkage gear drives the corresponding drill bit to conduct downward drilling construction. The device disclosed by the utility model is low in total manufacturing cost, beneficial to field maintenance and repair, low in construction cost and good in market prospect.

A lightweight subsea intervention equipment pressure control head and a grease injection hydraulic control system therefor, belonging to the technical field of offshore oil engineering. The pressure control head comprises a grease injection assembly (1), a grease discharge assembly (2) and a grease sealing assembly (3); the grease injection assembly is provided with a sealing grease injection port (13); the grease injection assembly injects sealing grease via the sealing grease injection port; a first-direction end of the grease injection assembly is connected to the grease discharge assembly; the grease discharge assembly is provided with a sealing grease discharge port (26); a second-direction end of the grease injection assembly is connected to the grease sealing assembly; thus, the sealing grease injected via the sealing grease injection port can be discharged via the sealing grease discharge port for recovery, and the sealing grease can also be discharged to the grease sealing assembly for sealing. The pressure control head achieves dynamic sealing of fluids or gases by means of injection of lubricating grease.

This invention discloses an underwater drilling assembly and system. The underwater drilling assembly and system includes a drilling assembly, a frame for the drilling assembly, and a connecting flange assembly to be secured to a hull. The underwater drilling assembly and system also includes a waste bin and an automatic vent valve assembly.

The utility model discloses an overwater ultra-deep mixing pile machine power head device which comprises a slurry supply system, an inner pipe is arranged at the pipeline connecting end of the slurry supply system, a drill rod and a drill bit are arranged on the lower portion of the inner pipe, and the inner pipe is fixedly connected with the drill rod and the drill bit through flanges. An outer pipe is arranged outside the inner pipe, a driven gear is arranged on the surface of the outer pipe, a gear box is arranged on the side face of the outer pipe, a power system is arranged on the upper portion of the gear box, and a transmission shaft of the power system extends into the gear box and is provided with a driving gear. Connection between the drill rod and the power head gear box is changed from rigidity to flexibility, the power head gear box, the drill rod and a drill bit are protected, impact of sea waves and surges on construction machinery in actual production is truly avoided, the equipment failure rate is reduced, offshore operation is difficult, efficiency is low, the construction period is long, input cost is low, and the device is suitable for popularization and application. The device is very convenient to mount and dismount, and has wide adaptability and good economic and social values.

System 200 comprises first offshore installation 60 comprising a jack-up structure comprising floatable hull 62 and three or more legs 64, configured to be raised and lowered vertically and engaged with or landed on seafloor 90. The jack-up structure has a carbon dioxide, CO2, removal system comprising CO2 removal unit(s) 3 (including fans and CO2 adsorption and / or absorption units), CO2 dehydration unit(s) 5, and CO2 compressor(s) 7. The CO2 removal unit is configured to remove CO2 from atmospheric air through Direct Air Capture (DAC) and form captured CO2. The system also comprises transfer conduit(s) 92 fluidly connecting the CO2 compressor(s) with a second offshore installation 70. The CO2 compressor is configured to transfer the captured CO2 through the conduits to the second installation. Second offshore installation 70 comprises CO2 injection well 94 configured to route the captured CO2 into a subsurface storage formation 110.

Underwater drilling assemblies and systems are disclosed. The underwater drilling assemblies and systems include drill assemblies, frames for drill assemblies, and connection flange assemblies to be fastened to a ship skin. The underwater drilling assemblies and systems further include waste cartridges and automatic air-bleed valve assemblies.