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Drill rod unloading device suitable for submarine drilling rig

A technology for drilling rigs and drill pipes, which is applied in the direction of drill pipes, drill pipes, drilling equipment, etc., and can solve the problem of not being able to connect and unload drill pipes at multiple positions, and achieve the effect of reducing the clamping force and rigidity requirements

Inactive Publication Date: 2016-01-13
HUNAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned deficiency that the power chuck used for clamping drill pipes and unscrewing threads on the existing seabed drilling rigs cannot connect and unload drill pipes at multiple positions, the present invention provides a drill pipe connecting and unloading device suitable for seabed drilling rigs

Method used

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  • Drill rod unloading device suitable for submarine drilling rig
  • Drill rod unloading device suitable for submarine drilling rig

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Embodiment 2

[0026] Such as figure 2 As shown, the structure is similar to that of Embodiment 1, except that the power chuck 12 does not have a separate slide rail frame 9, but the drilling power head slide rail 2 of the existing subsea drilling rig mast frame 1 is downward extend, so that the power chuck 12 shares a slideway 2 with the drilling power head of the existing subsea drilling rig. The installation method in the frame 1 should ensure that there is no interference between the propulsion slider 4 and the lifting hydraulic cylinder 11 and the lifting hydraulic cylinder base 10 when the propulsion cylinder 6 drives the drilling power head 3 to descend.

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Abstract

The invention discloses a drill rod unloading device suitable for a submarine drilling rig; a power chuck for drill rod clamping and screw thread unloading on a traditional submarine drilling rig is formed to a whole component having a slide support piece; an installation mode thereof on the submarine drilling rig guarantees the axis of a center through hole thereof to be always coaxial with the axis of a driving drill rod on a drilling power head of the submarine drilling rig; meanwhile, the submarine drilling rig is additionally provided with a lifting hydraulic oil cylinder and a slide rail frame having an installation direction parallel to a slide way of the drilling power head of the submarine drilling rig; and the whole component of the power chuck can be driven by the lifting hydraulic oil cylinder to vertically move along the slide rail frame. The drill rod unloading device uses the advantage of capability of shifting the position of the power chuck, so that the power chuck can be used for unscrewing upper and lower screw threads of a drill rod, and when the upper and lower screw threads of the drill rod are not totally unscrewed, the drill rod is always kept in a center hole of the power chuck and prevented from tilting; and meanwhile, when the upper and lower screw threads of the drill rod are both unscrewed, and the drill rod needs to displace in parallel, the drill rod can be disconnected for providing a space.

Description

technical field [0001] The invention relates to a drilling rod connecting and unloading device, in particular to a drilling rod connecting and unloading device suitable for a seabed drilling machine. Background technique [0002] The submarine drilling rig is a necessary technical means to carry out marine geological and environmental scientific research, conduct submarine resource exploration and submarine engineering geological survey, and obtain accurate geological data of the seabed. With the continuous deepening of the drilling depth of subsea drilling rigs, existing subsea drilling rigs must have the function of automatically connecting and unloading drill pipes. Therefore, existing subsea drilling rigs are equipped with hydraulic or mechanical power chucks to achieve clamping and unloading of drill pipes Screw thread unscrewing, however, the power chucks used for drill pipe clamping and screw thread unscrewing on existing subsea drilling rigs are all fixed-mounted p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/16E21B19/10
Inventor 万步炎金永平黄筱军
Owner HUNAN UNIV OF SCI & TECH
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