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Wellbore drilling system

A drilling and wellbore technology, which is applied in the direction of drill pipe, drill pipe, earthwork drilling and mining, etc.

Active Publication Date: 2015-12-23
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this drill center tool supporting the robot allows removal of drill floor rails for iron drillers and is also intended to be used with other drill center tools, the robot is not entirely satisfactory

Method used

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Examples

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Embodiment Construction

[0147] will now refer to Figure 1 to Figure 5 An embodiment of an oil and gas offshore drilling vessel equipped with a wellbore drilling system according to the present invention will be described.

[0148]Here, the ship 1 is a monohull with a hull 2 ​​through which a well 3 extends. A drilling tower (here the drill rig 4 ) is mounted on the hull, in this case above the boat well 3 . The drill frame is associated with a lifting device (known in the art as a drilling winch) which in the embodiment shown runs along the outside of the drill frame (here the side of the drill frame 4) extending through the shipwell 3 front and rear) and form two working lines 5,6 thereon.

[0149] A drill floor 25 is provided which has a drilling center 27 through which a drill string passes along a working line (here working line 5 ).

[0150] The line 5 is designed to perform drilling and here comprises a drill string rotary drive (here a top drive 7 or other rotary drive) adapted to drive th...

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Abstract

An aspect of the present invention relates to a wellbore drilling system comprising a drilling tower and a tubular racking device having at least a lower first tubular racker assembly and at least a second tubular racker assembly operable at a greater height than the first tubular racker assembly. The system further comprises one or more well center tools, each adapted for operation above the well center of the drill floor, e.g. an iron roughneck tool for making up and breaking out of threaded tubular joints. According to the present invention, the tubular racking device comprises a third tubular racker assembly which is vertically mobile and which is operable for tubular transfer between the firing line and the drilling tubulars storage rack in combination with the second tubular racker assembly, e.g. in case of failure of the first tubular racker assembly, and wherein at least one well center tool is adapted to be connected to the motion arm of the third tubular racker assembly, which well center tool is operable above the drill floor, whilst the first and second tubular racker assemblies are operable in combination for tubular transfer between the firing line and the drilling tubulars storage rack.

Description

technical field [0001] The present invention relates to a wellbore drilling system and a drilling method. Background technique [0002] In the oil and gas drilling industry, various types of piping systems commonly referred to as "tubing" are used. Tubulars include, for example, drill pipe, casing, and other connectable (eg, threaded) oil and gas drilling pipeline elements. [0003] Often, individual joints of drill pipe or other tubulars are held together during drilling operations, such as during tripping operations. Most modern drilling rigs are capable of handling a three-jointstand called a "triple" or even a quadruplestand (135 feet) called a "quad". [0004] The applicant of the present application has disclosed, for example, in WO02 / 18742, a wellbore drilling system comprising a tower fitted to the hull of a drillship and adjacent to the shaft. The tower frame is specifically configured as a drill frame. [0005] Such a system includes a drill floor above the shi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/00E21B15/02E21B19/14E21B19/15
CPCB63B15/00B63B35/4413E21B15/00E21B15/02E21B19/06E21B19/14E21B19/143E21B19/146E21B19/155E21B19/20E21B19/24B63B2035/4473
Inventor J·鲁登伯格D·B·韦宁H·赫塞尔斯
Owner ITREC BV
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