Continuous pipe drilling machine system for underwater environment
An underwater environment and coiled tubing technology, applied in underwater drilling, drill pipes, drill pipes, etc., can solve problems such as high operating failure rate, complicated installation and disassembly of drill pipes, and long overhanging spans
Pending Publication Date: 2020-07-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
Most of the existing submarine directional drilling operations use land drilling rigs to extend from the water surface. This operation method will inevitably have a long span section and is easily affected by the heave of the surface mother ship
Some subsea rod-mounted drilling rigs can be used to operate on the bottom of the seabed, but the installation and disassembly process of the drill pipe is complicated, the operation failure rate is high, and the positioning accuracy is low
Method used
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[0015] Such as figure 1 As shown, it is a schematic diagram of an underwater injection head in a coiled tubing drilling rig system used in an underwater environment related to this embodiment. The coiled tubing is mounted on image 3 On the shown underwater coiled tubing winch, the end of the coiled tubing is connected to the drilling tool mechanism. During operation, the coiled tubing is pushed and dragged back through the holding force of the underwater injection head on the coiled tubing.
[0016] The underwater injection head includes: the outer frame 7 and the control set inside it to realize the continuous adjustment of the drilling or dragging speed and the hydraulic system with continuous tube length measurement and overload protection functions, slip structure 3, clamping system, tensioning system, angle measurement unit, tension measurement unit, tubing straightening system 14 and support casing 16.
[0017] The hydraulic system includes: an axial piston motor and a...
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The invention relates to a continuous pipe drilling machine system for an underwater environment. The drilling machine system comprises an underwater injection head, a continuous pipe, a drilling toolmechanism and an underwater coil winch, wherein the underwater injection head is used for providing sufficient drilling force and back-dragging force required by drilling operation, the drilling toolmechanism is used for drilling, reaming and sampling, and the underwater coil winch is capable of being controlled synchronously with the underwater injection head and automatically discharging pipes; and the continuous pipe is mounted on the underwater coil winch, the tail end of the continuous pipe is connected with the drilling tool mechanism, and pushing and dragging of the continuous pipe are realized through the holding force of the underwater injection head on the continuous pipe in the operation process. The continuous pipe drilling machine system is the main equipment for underwaterdrilling, reaming and sampling, can be installed on an equipment platform and realize submarine automatic directional drilling operation through water surface remote control operation, and is suitablefor salvage of submarine sunken ships, trenchless installation of submarine pipelines, submarine geological detection and sampling and the like.
Description
technical field [0001] The invention relates to the technology in the field of underwater exploration equipment, in particular to a coiled tubing drilling rig system for underwater drilling, reaming and sampling. Background technique [0002] The coiled tubing drilling rig system used in the underwater environment is the main equipment for underwater drilling, reaming and sampling. It can realize automatic directional drilling operations on the seabed through remote control on the water surface. Compared with the extended drilling on the water surface, this method not only has The equipment has the advantages of small size, low cost, high safety, etc., and greatly improves the efficiency of the operation. Most of the existing submarine directional drilling operations use land-based drilling rigs to extend from the water surface. This operation method inevitably has a long span and is easily affected by the heave of the surface mother ship. Some underwater rod-mounted drilli...
Claims
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IPC IPC(8): E21B7/04E21B7/12E21B19/22E21B7/28E21B49/00
CPCE21B7/043E21B7/12E21B7/28E21B19/002E21B19/22E21B49/001
Inventor 王旭阳葛彤庄广胶吴超赵敏王猛苏婧项锋吴峰张春文
Owner SHANGHAI JIAO TONG UNIV