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top drive drilling rig

A technology for drilling and driving units, which is applied in the direction of drilling equipment, supporting devices, drilling pipes, etc., and can solve problems such as the rotation of arms and elevators, and achieve the effect of effective switching

Active Publication Date: 2017-09-15
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, there is a risk of the boom and elevators swiveling

Method used

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Examples

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Embodiment Construction

[0094] exist figure 1 and figure 2 , respectively show a side view and a front view of a top drive drilling device 1 according to the first aspect of the present invention.

[0095] In the figures, a part of a rig 10 is schematically shown, together with the two vertical rails 11a, 11b supported by the rig 10 . The trolley 12 is guided along said vertical rails 11a, 11b via guide wheel sets 13 .

[0096] The top drive drilling rig 1 is also provided with hoisting equipment 20 comprising a cable 21 and a drawworks 22 . A cable 21 extends from the winch to a fixed block 24 and a traveling block 25 via one or more pulleys 23 at the top of the derrick 10 . The fixed tackle includes a plurality of sheaves 24a mounted on a common shaft. The traveling block 25 is suspended from the fixed block 24 by said cables 21 . The trolley 12 is suspended at the end of the traveling block 25 via a coupling 26 so as to move up and down as the winch 22 operates.

[0097] In an embodiment n...

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PUM

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Abstract

A top drive drilling apparatus includes: a drilling tower; vertical rails supported by the drilling tower; trolleys guided along the one or more vertical rails; and lifting equipment for moving the trolleys up and down. The apparatus further comprises: a tubular rod connected to an upper end of the drill string for rotation therewith about the axis of the drill string; and a top drive unit comprising a motor adapted to rotate the tubular rod thereby rotating the connected drill string. column for drilling, wherein the top drive unit is supported by a trolley. Furthermore, an elevator is provided which is adapted to suspend the drill string in a working position, for example during running in, and an elevator support assembly is provided which is adapted to absorb the load of the suspended drill string and The elevator is adapted to move the elevator between an operative position on the drill string axis and a retracted position. According to the invention, the elevator support assembly embodies a direct drill string load bearing connection between the elevator and the trolley, independent of said top drive unit.

Description

technical field [0001] The present invention relates to a top drive drilling arrangement and a method for performing drilling operations. Background technique [0002] For example, US 4,489,794 reference Figure 8 to Figure 10a , 10b discloses a top drive drilling apparatus comprising a drilling tower provided with a vertical rail supported by the drilling tower. The trolleys are guided along vertical tracks. The trolley is suspended from the traveling block of the hoisting equipment, which is commonly referred to in the drilling industry as a drilling winch. Lifting equipment includes ropes and winches, and fixed blocks. The traveling tackle is suspended from the fixed tackle by cables. The operation of the winch allows the traveling block and trolley to be moved up and down the track. [0003] The above known arrangement further comprises a top drive unit comprising a rotatable tubular rod connected to the upper end of the drill string for rotation therewith about the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/06E21B3/02
CPCE21B19/06E21B3/022E21B15/00
Inventor J·茹登伯格D·B·维哲宁
Owner ITREC BV