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Drill pipe protector

A protection device and drill pipe technology, which is applied in the direction of drill pipe, drill pipe, earthwork drilling, etc., can solve the problems of unsuitable drill pipe positioning device, high stress of drill pipe, fatigue damage of drill pipe, etc.

Active Publication Date: 2021-12-28
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by sea conditions, even with a positioning system, the floating drilling platform still has a certain range of movement in the horizontal direction. The drill pipe positioning device should not adopt a completely rigid structure, otherwise the drill pipe will be subject to a large radial load , leading to drill pipe damage
[0003] At present, there is a lack of equipment that responds to the fluctuation of the horizontal position of the drill pipe when the horizontal position of the floating drilling platform fluctuates. That is, the fluctuation range of the horizontal position of the joint between the drill pipe and the floating drilling platform is exactly the same as that of the floating drilling platform. Excessive stress, leading to premature fatigue failure of the drill pipe

Method used

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Embodiment Construction

[0028] Drilling platforms generally make holes vertically. Although there may be horizontal wells in shallow seas, for floating drilling platforms, the holes are generally made vertically. Accordingly, it can be seen that the drilling rod 9 is usually in a vertical state.

[0029] Limited by the positioning system of the drilling platform itself, although the floating drilling platform will produce a certain swing range, it is usually limited to a controllable range, and the precision of the drilled hole is within an acceptable range.

[0030] When the drilling platform oscillates, the drill pipe 9 will be subject to greater impact, and will also undergo greater deformation along with the platform.

[0031] exist figure 1 In the shown structure, there is a buffer space between the base 1 and the drill pipe 9. If the deformation of the floating drilling platform is relatively small, the force of the leaf spring 10 acting on the drill pipe 9 is relatively small. On the one hand...

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Abstract

The invention discloses a drill pipe protection device, which is suitable for the protection of drill pipes on floating drilling platforms. hole, the drill pipe passes through the hole from the center, and there is a buffer space between the hole wall; there are at least three leaf springs, and the leaf spring installed on the base is centered on the center hole in the buffer space An annular array with leaf springs engaging the drill rods when the drill rods are coaxial with the central via. Based on the invention, the stress of the floating drilling platform acting on the drill pipe can be relieved.

Description

technical field [0001] The invention relates to a drill pipe protection device applied to a floating drilling platform. Background technique [0002] Drilling platforms are important equipment for the development and utilization of marine resources. They are divided into floating drilling platforms and fixed drilling platforms. Compared with the stability of fixed drilling platforms, floating drilling platforms shake relatively large. The floating drilling platform floats on the sea surface, and the drilling pipe is positioned on the seabed continental shelf. Facing the harsh marine environment, the floating drilling platform is stabilized within a safe range through the positioning system, so as to avoid excessive horizontal displacement of the platform and the drilling pipe. Rod or drilling equipment is damaged, and safety accidents occur. Affected by sea conditions, even with a positioning system, the floating drilling platform still has a certain range of movement in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/10E21B47/00E21B47/001
CPCE21B17/1042E21B47/00
Inventor 王守仁王坤坤王高琦杨学锋吴戍戌于琪琪禄心强郭宇肖滕
Owner UNIV OF JINAN