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Drill ship and method of using same

A technology for drilling ships and drill pipes, which is used in drill pipes, drill pipes, earth-moving drilling, etc.

Active Publication Date: 2017-03-22
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This requires a lot of driving power, not to mention the fact that due to the length of the drill string moving the drill string apparently at the upper end may cause undesired behavior of the drill string at the lower end, such as entanglement behavior or oscillatory behavior

Method used

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  • Drill ship and method of using same
  • Drill ship and method of using same
  • Drill ship and method of using same

Examples

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Embodiment Construction

[0115] figure 1 A suspension assembly according to an embodiment of the invention is shown. The suspension assembly includes a suspension bracket CC, a first suspension device FC disposed on the suspension bracket CC, and a second suspension device SC disposed on the suspension bracket CC. Each of the first and second suspension arrangements FC, SC is configured to secure a string of drill pipe so as to suspend the string of drill pipe from the drill ship into the sea.

[0116] The suspension bracket CC comprises two legs L1, L2 and a frame member FM bridging the two legs L1, L2, forming a recess RE with a U-shaped profile C1 passing through the frame member FM at one end and at the The opening OP at the other end delimits it.

[0117] The first suspension device FC is provided at the recess side of the frame member FM. The second suspension device SC is arranged on a rotatable arm RA rotatably mounted to the leg L1 so as to be rotatable about a substantially vertical axis...

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PUM

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Abstract

The invention relates to a drilling vessel for drilling in the earth's surface, comprising a double working line and a suspension bracket for moving a drill pipe string between the two working lines, wherein the suspension bracket is provided with a stationary first suspension device and a movable The second suspension device requires only a relatively small amount of lateral movement to pass the drill pipe string present in the operation line and allows the first suspension device to access and engage the drill pipe string. The invention also relates to a method for exchanging a drill pipe string for another drill pipe string, wherein a drill ship according to the invention is used.

Description

technical field [0001] The present invention relates to a drill ship for drilling eg oil or gas in the earth's surface from a drill ship. Said boat is known, for example, from International Patent Publication WO 99 / 11901 in the name of the applicant. Background technique [0002] In WO 99 / 11901 a drill ship is disclosed comprising a hull with a well extending through the hull; a drilling tower or drilling mast; and an auxiliary tower or auxiliary mast arranged next to the drilling tower or drilling mast . The drilling tower or drilling mast defines a drilling line extending vertically through the ship's well along which drilling may be performed. The auxiliary tower or mast defines a construction line extending vertically through the well, along which a string of drill pipe, such as a drill string or casing string, may be built or dismantled. [0003] The drill ship further includes a suspension assembly having a carriage movable between a first position proximate to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44
CPCE21B19/002B63B35/4413
Inventor J·鲁登伯格D·B·韦宁
Owner ITREC BV