123results about "Underwater drilling" patented technology

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.

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 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 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.

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.

The application provides a pressurized rotary hydraulic control system with multiple working modes, comprising a load-sensitive pump, a pilot oil pump, a multi-way valve assembly, a hydraulic cylinder, a hydraulic motor, a proportional pressure reducing valve, an electromagnetic reversing valve, a hydraulic control reversing valve and a manual overflow valve, etc. The application has three working modes of pressurized feeding, single-pump driving rotary rock breaking and double-pump driving rotary rock breaking; wherein the pressurized feeding working mode is the extension and retraction work of the hydraulic cylinder driven by the hydraulic pump, having the advantages of fast feeding and pressurized propulsion of the drilling tool for active rock breaking; the single-pump driving rotary rock breaking working mode is the forward and reverse rotation work of the double motor driven by the single hydraulic pump, having the advantages of stepless speed regulation and multiple torque output; the double-pump driving rotary rock breaking working mode is the forward and reverse rotation work of the double motor driven by the double hydraulic pump, having the advantages of high power output and fast cutting of the rock layer. The application can meet the needs of high and low speed rotary rock breaking of the drilling tool, pressurized drilling in super deep ground and load-sensitive regulation and control in the well forming process.

The utility model discloses novel drilling equipment for underwater geology. The novel drilling equipment comprises a sleeve, a drill rod and a drill bit assembly. An opening is formed in the lower end of the sleeve and is communicated with the accommodating space; the drill rod is arranged in the containing space, the drill bit assembly comprises a drill bit body, at least two movable parts and reset parts arranged corresponding to the movable parts, the drill bit body is connected to the lower end of the drill rod and extends to the lower end of the sleeve through the opening, and the movable parts have a drilling state and a recycling state; the upper end of the abutting face is located in the axial extending space position of the containing space, the lower end of the abutting face is located outside the axial extending space position of the containing space, and in the recovery state, the upper end and the lower end of the abutting face are both located in the axial extending space position of the containing space. According to the technical scheme, the drill bit can be conveniently taken out of the drill hole.

The application belongs to the technical field of static rock breaking, and discloses an underwater static rock breaking device and method, which are used for breaking rock. The rock is provided with a containing hole, and the underwater static rock breaking device is arranged in the containing hole. The underwater static rock breaking device comprises a fixed pipe assembly, a first flexible pipe, a water injection pipe and a freezing pipe line. The first flexible pipe is connected with one end of the fixed pipe assembly and surrounds the fixed pipe assembly to form a freezing cavity. The water injection pipe can extend into the freezing cavity and inject liquid water into the freezing cavity. When the liquid water is injected into the freezing cavity through the water injection pipe, the first flexible pipe can expand and tightly adhere to the hole wall of the containing hole, and the fixed pipe assembly can be clamped with the hole wall to lock the first flexible pipe. The freezing pipe line can extend into the freezing cavity and freeze the liquid water in the freezing cavity. When the liquid water in the freezing cavity is frozen into solid water, the volume of the solid water is increased, which can make the first flexible pipe further expand and press the hole wall until the rock is broken, and no vibration, explosion or toxic substance is generated, which is safe and environmentally friendly.

The invention discloses a drilling and fixing integrated drilling device and method for a deep sea natural gas hydrate exploitation system. The drilling device comprises a hollow drill rod, a plurality of continuous pipe separation units and a hollow drill bit which are fixedly connected from top to bottom in the axial direction, and according to the method, the multi-well guiding suction anchor, the rope soil taking equipment, the drilling device and the seabed drilling machine are lowered to a seabed to be positioned and leveled through a small and medium-sized workboat and are fixedly connected with the multi-well guiding suction anchor; the seabed drilling machine controls the drilling device to drill along the multi-well guide suction anchor, and the rope soil taking equipment takes soil; and the pipe is replaced until the target depth is drilled, the drilling device conducts self well cementation and well completion through the self-expansion packer and the pre-filled gravel screen pipe, and the drilling device is completed after equipment is recycled. The device has continuous and integrated operation capacity of well drilling, soil taking, well cementation and well completion, the cost is effectively reduced, the efficiency is remarkably improved, rapid construction, convenient well cementation and economic well completion of a deep sea hydrate mining system are achieved, and a new thought and method are provided for safe and efficient mining of deep sea hydrates.

A method for providing a subsea template system with a tail pipe, and a subsea template system are disclosed. The subsea template system comprising a structure including a guide with an opening, and including a plurality of supports for engaging a seabed; a tail pipe being cylindrical and comprising a serrated end structure at a first (lower) end of the tail pipe, the tail pipe arranged at the opening, and the tail pipe comprising an interface for rotating and axially move the tail pipe relative to the structure. The method comprising: placing the structure and the tail pipe on the seabed; rotating and moving axially the tail pipe relative to the guide and into the seabed; drilling with the drill string an opening for an outer conductor casing; and installing the outer conductor casing and applying cement between the outer conductor casing and the tail pipe.

A subsea vertical drilling machine is disclosed, having a drill assembly formed by a riser pipe having a first end, a second end, and a length extending between the first and second ends; and a drilling machine body, including a drilling head, coupled to the first end of the riser pipe, and a vertical feed system configured for advancing the drill assembly in a vertical direction. The riser pipe is provided with at least one rack extending along at least a part of the length of the riser pipe, and the vertical feed system comprises a motor coupled to a pinion, the pinion arranged for engaging with the rack for advancing the drill assembly. Unlocking insights from Geo-Data, the present invention further relates to improvements in sustainability and environmental developments: together we create a safe and liveable world.

The present invention relates to a civil engineering apparatus for excavation, comprising multiple device modules, the civil engineering apparatus having an excavation mechanism constructed from at least two device modules and a load-bearing structure for suspending the excavation mechanism and moving it vertically to form a pit in the ground, wherein a personnel passage is constructed in or at the at least two device modules, the personnel passage allowing personnel to pass horizontally along the at least two device modules.

The invention discloses an underwater pebble covering layer drilling method which comprises the following steps that S1, a variable-diameter casing pipe is pressed into water in a hydraulic pressing-in mode, the bottom of the variable-diameter casing pipe penetrates through a pebble layer and abuts against underwater rock, and the variable-diameter casing pipe comprises a large casing pipe body and a small casing pipe body which are connected with each other; s2, a drill rod is inserted into the variable-diameter casing pipe, and the drill rod is started; and S3, firstly crushing the cobblestones by the drill rod, and then drilling holes in the underwater rock. The variable-diameter casing pipe can penetrate through a cobblestone layer through hydraulic pressing, and the problem that a traditional casing pipe is difficult to penetrate through the cobblestone layer is solved. The large sleeve and the small sleeve form the variable-diameter sleeve, when the variable-diameter sleeve is lowered, the influence of water flow on the large sleeve is small, when the small sleeve penetrates through the cobblestone layer, the diameter of the small sleeve is smaller, the small sleeve can be inserted into the cobblestone layer more easily, the junction of the small sleeve and the large sleeve is in smooth transition, and the large sleeve can be inserted into the cobblestone layer along with the small sleeve conveniently. The small casing pipe is more attached to the drill rod, accurate guiding is conveniently provided for the drill rod, and work of the drill rod is facilitated.

The present application belongs to the technical field of submarine pipeline laying, and particularly relates to a high-precision butt joint method, system and equipment for submarine pipeline laying under rocks, aiming to solve the problem that the accurate butt joint construction of the existing submarine directional drilling crossing technology can only be carried out in the horizontal direction of land or the crossing drilling between land and land. The present application comprises the following steps: through a sea drilling ship, a positioning drill bit carrying a magnetic source beacon is made to drill down through a drill rod in the butt joint sea area, a guide source is set, the first butt joint drilling tool is guided to drill to a preset butt joint area and the through position is recorded through the guide source, the first butt joint drilling tool is retracted, the second butt joint drilling tool is guided to the through position through the guide source, and directional drilling is completed. The present application enables the horizontal directional drilling construction based on magnetic source positioning to carry out rock butt joint operation in any sea area where offshore drilling operation can be carried out, and solves the problem that the butt joint in rocks between the ocean and islands can only be carried out in one-way operation.

The present application relates to a kind of unmanned wellhead platform upper module layout design method of deep water chicken eggshell formation, belong to the field of offshore oil engineering technology, comprising: fire wall is set on the upper portion of unmanned wellhead platform, and the both sides of the module of the upper portion of unmanned wellhead platform are divided into dangerous area and safe area;In the safe area, the first layer electrical room is divided into the left side of the first layer electrical room and the right side of the first layer electrical room;Helicopter deck is arranged above the second layer room;The lower edge of the upper module of unmanned wellhead platform is outwardly convex to form crane area, and crane is arranged in the crane area;By adjusting well slot spacing, production tree is arranged in the lower deck of the module of the wellhead of unmanned wellhead platform, double-layer production tree is improved into single-layer production tree, and upper deck production tree and its cover are cancelled.The present application solves the problem of mutual interference between cantilever beam of drilling ship and module equipment and facilities during drilling ship positioning and drilling operation under the condition of 100-meter water depth chicken eggshell formation.

The invention discloses a suction anchor wellhead device for a deep sea natural gas hydrate radial well cluster exploitation system and an operation method. The deep sea suction anchor comprises a top cover and a peripheral barrel, the top cover is fixed to an upper port of the peripheral barrel, a top cover rail is arranged on the top cover, and the drilling machine is installed on the top cover rail through a drilling machine moving platform; the deep-sea suction anchor is provided with a vertical pipeline used for a vertical well on the central axis of a barrel shell structure, a guide supporting plate is arranged in the barrel shell structure of the deep-sea suction anchor, a mining well guide pipeline used for an inclined well is embedded in the barrel shell structure of the deep-sea suction anchor, and the mining well guide pipeline vertically penetrates through the guide supporting plate in the inclined direction and extends. The stability of a multi-well structure is guaranteed through multi-plate staggered supporting and guiding combination, the drilling machine moving platform and the top cover rail cooperate to achieve inter-well movement of the drilling machine, efficient and automatic construction operation of a deep-sea radial well cluster exploitation system is integrally achieved, and novel seabed fixing equipment and an operation method are provided for a deep-sea natural gas hydrate exploitation system.

This utility model provides a multi-stage correction system for offshore wind power exploration guide casings. The guide casing includes a connecting casing section, a correction casing, a drill collar, and a cutting edge casing. Adjacent connecting casing sections are connected by correction casings. The lower end of the lowest connecting casing section is sequentially connected to the drill collar and the cutting edge casing. M winches are evenly distributed circumferentially at the upper end of the guide casing. M correction latches are evenly distributed circumferentially on the drill collar. Each correction latch is connected to the corresponding winch via a steel wire rope. The upper end of the guide casing has multiple casing correction winch groups, the same number as the correction casings in the guide casing. Each casing correction winch group includes N winches evenly distributed circumferentially at the upper end of the guide casing. N correction latches are evenly distributed circumferentially on the correction casing. Each correction latch is connected to the corresponding winch via a steel wire rope. The multi-stage correction mechanism of this invention ensures that each section of the guide sleeve is in a vertical position.

A subsea vertical drill is disclosed having a drill assembly and a vertical feed system, the drill assembly formed from a riser pipe and a drill body, the riser pipe having a first end, a second end, and a length extending between the first end and the second end, the drill body including a drill bit and coupled to the first end of the riser pipe, the vertical feed system configured to advance the drill assembly in a first direction. The riser pipe is provided with at least one rack extending along at least a portion of the length of the riser pipe, and the vertical feed system includes a motor coupled to a pinion gear, the pinion gear arranged to mesh with the rack to advance the drill assembly.

The application relates to a deep-water drilling chamber indoor vibration experiment device and an experiment method. The device comprises a derrick, a flexible drill string, a rigid drill string, a rock sample clamping mechanism, an air wave generator, a torque dynamometer and a sensor group. The actual marine environment is simulated through the air wave generator, and the dynamic characteristic parameters of the drill string system are collected through the torque dynamometer and the sensor, so that the problem that the actual marine environment load cannot be simulated, and the dynamic characteristic parameters of the drill string system cannot be accurately and comprehensively obtained in the prior art is solved.

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 application discloses an underwater rock mass drilling device, which comprises a drilling assembly, a height adjusting assembly and a supporting assembly, the drilling assembly comprises a drill rod and a drill bit, the height adjusting assembly is provided with a sleeve, the supporting assembly comprises a rectangular frame body which is surrounded by four telescopic members connected in a head-to-tail mode, and a plurality of telescopic rods are connected between the rectangular frame body and the sleeve. The application further discloses a drilling method based on the underwater rock mass drilling device, which can adjust the position of the drill bit through the plurality of telescopic rods, improve the accuracy of the drilling position, and can successively complete a plurality of drilling tasks within the range surrounded by the plurality of telescopic members, thereby improving the work efficiency.

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 carbon dioxide sequestration, and particularly relates to a method for rapidly synthesizing hydrate and stably burying CO2 in a shallow-middle sea area sedimentary layer, which comprises the following steps: S1, mounting a rotatable jet drill bit at the front end of a CO2 injection pipe; s2, a drill bit at the front end of the CO2 injection pipe is drilled into a certain area below a seabed sedimentary layer of the shallow-middle sea area; s3, a liquid CO2 storage tank is connected with a CO2 injection pipe to inject high-pressure liquid CO2; s4, stirring along with blades; s5, the length of the CO2 injection pipe is gradually extended, the rotatable drill bit is installed at the end of the CO2 injection pipe, the spiral blades are welded to the rotatable drill bit, the liquid CO2 is injected to drive the rotatable drill bit to rotate, the stirring effect is achieved, the liquid CO2 is promoted to be rapidly dissolved into seawater, hydrate is further rapidly generated and does not move to the seabed to float, and therefore the CO2 injection pipe can be recycled. The CO2 can be prevented from being dissolved in the ocean after being in direct contact with seawater subsequently, stable storage of CO2 in the sea area of 500-2650 meters can be met, and the method can also promote rapid generation of hydrates even in the sea area exceeding 2650 meters.

An underwater drilling assembly and system is disclosed. The underwater drilling assembly and system includes a drilling assembly, a frame for the drilling assembly, and a connection flange assembly to be secured to a hull of a vessel. The underwater drilling assembly and system also includes a waste box and an automatic vent valve assembly.

A method for undersea in-situ exploitation of natural gas hydrates is provided. The method includes: obtaining a well pattern layout diagram of a natural gas hydrate exploitation block based on a natural gas hydrate simulation exploitation model; carrying an undersea in-situ exploitation system to a target sea area using a ship configured to deploy deep-water equipment, selecting the well location according to the well pattern layout diagram; lowering a drilling device using a casing drilling technique; lowering a completion device, lowering a completion pipe string into the well, and connecting the completion device to an undersea wellhead to perform completion operation; and lowering the wellhead device, connecting the wellhead device to the completion pipe string, connecting the wellhead device to a production pipeline, and starting a depressurization exploitation process to reduce the pressure at a reservoir to make gas and water flow into the production pipeline to be extracted.

The invention provides an underwater excavation drilling device which comprises a first two-way rail frame arranged in the middle of a workboat, the lower portion of the first two-way rail frame is connected with the workboat through a first support, and the workboat, the first support and the first two-way rail frame are connected to form a transportation channel of a transportation trolley. A first positioning frame is supported on the upper portion of the first two-way rail frame, a first pushing module is arranged at the top of the first positioning frame, and a first drill bit module is connected to the bottom of the first pushing module. The transport trolley is used for transferring sediments excavated by the first drill bit module from a riverbed into the self-propelled mud barge abutting against one side of the workboat through the first extension frame. The design is ingenious, excavation work of the riverbed can be completed only through the drill bit and one module, the environmental protection property of construction is greatly improved, and direct damage to the ecology is avoided under stable disturbance of overall construction.

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.