Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
  • E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells

Definitions

• the present invention regards a modular lightweight drilling rig in accordance with the • ⁇ preamble of the appended Claim 1
• a drilling ⁇ g is put up by a structure being assembled from basics directly on a platform, 1 e on the platform deck
• This structure comprises a substructure containing service functions such as pumps, compressors and other equipment, and 10 defines a drilling deck on top of the substructure
• the actual derrick is arranged on this drilling deck
• Such construction is time consuming, and must be closely co-ordinated in order to avoid delays, e g due to components not being ready when they are due to be assembled
• SU 1709059 which shows a ⁇ g consisting of a large number of rectangular modules
• the modules are placed two and two in each level
• the modules of adjoining storeys are placed in ⁇ ght angle to each other, in the same way as a match tower This means that the access to the interior of the tower is very limited
• each module has a weight that is less than the lifting capacity of a moderately sized crane It is ⁇ desirable for each module to weigh less than 25 tonnes Furthermore there is a need for a modular rig structure that may readily be assembled and has an overall weight that is small in comparison with conventional rig structures.
• the present invention aims to provide a lightweight modular rig structure that may be assembled in a simple manner and has a high degree of applicability. It is also an object of the present invention to provide a structure consisting of a limited number of modules, in which each module has a limited weight. It is also an object of the invention that each module be easy to transport. It is a further object of the invention to provide a structure that may be assembled in a very simple and effective manner, and for which the requirement for assembly detail and supports is minimised.
• Figure 1 shows an exploded view of a rig structure in accordance with the present invention
• Figure 2 shows a perspective drawing of a rig structure in accordance with the present invention
• Figure 3 shows a first side view of a rig structure in accordance with the present invention.
• Figure 4 shows a second side view of a rig structure in accordance with the present invention.
• FIG. 1 shows a modular lightweight rig structure 1 according to the present invention.
• the structure generally consists of the following modules: A first frame module 2 and a second frame module 3, a first lower module assembly 4 and a second lower module assembly 5, a first upper module assembly 6 and a second upper module assembly 7, a first piping deck 8 and a second piping deck 9, a drilling deck 10 and a derrick 11.
• the frame modules 2 and 3 are designed to be placed on longitudinal sliding rails 12 and 13 that are fixed to the platform deck 15.
• a BOP deck 14 (BOP Blow Out
• Preventer is disposed between frame modules 2 and 3.
• the BOP 14 deck also acts as a spacer for frame modules 2 and 3, and is connected to these in a manner so as to fix the frame modules telative to each other
• the frame modules each consist of a base frame 2a, 3a respectively and two side frames 2b, 2c and 3b, 3c respectively
• the first and second lower module assembly 4 and 5 consist of a plurality of single modules 4a-4d and 5a-5d respectively, with the case as shown comprising four single modules m each module assembly
• the single modules 4a-4d and 5a-5d respectively are placed side by side, against each other
• the module assembly 4 is designed to be placed mside frame module 2
• the module assembly 5 is designed to be placed mside frame module 3, on top of the base frames 2a and 3a respectively and between the side frames 2b, 2c and 3b, 3c respectively
• the first and second module assembly 6 and 7 also consist of a plurality of single modules 6a-6d and 7a-7d respectively, with the case as shown also here comprising four single modules in each module assembly
• the module assemblies 6 and 7 are designed to be placed on top of the side frames 2b, 2c and 3b, 3c respectively of the frame modules 2 and 3 respectively
• the frame modules 2 and 3 respectively carry the entire weight of the module assemblies 6 and 7 respectively
• the module assemblies 4 and 5 carry no weight
• the first piping deck 8 is located on top of the first module assembly 6
• the second piping deck 9 is located on top of the second module assembly 7
• Each piping deck 8 and 9 consists of a base frame 8a and 9a and a plurality of pms 8b and 9b designed to retain a respective pipe rack
• a first transverse sliding rail 16 is provided by the edge 8c of the first piping deck 8, which edge faces the second piping deck 9
• a second transverse sliding rail 17 is provided by the edge 9c of the first piping deck 9, which edge faces the fust piping deck 8
• the drilling deck 10 is positioned on sliding rails 16 and 17
• the derrick 11 is placed on top of the drilling deck
• Figure 2 shows a perspective view of the modular lightweight rig in the assembled state
• the longitudinal sliding rails 12 and 13 provided on the platform deck 15 can be seen
• the entire ⁇ g may be run shdingly along the sliding rails 12 and 13 by virtue of the frame modules 2 and 3 being designed to slide on sliding rails 12 and 13 via sidmg blocks 20 on the base frames 2a and 3a
• the BOP frame 14 forms a combined spacer and connector for the frame modules 2 and 3, in order for these
• module assemblies 6 and 7 are designed so as to have sufficient load-bea ⁇ ng capacity to be able to carry the piping decks 8 and 9, including their respective pipe racks, the drilling deck 10, the control room 18 and the module 19, and the der ⁇ ck 11 It is however also possible to l s envisage a further frame module being provided on top of each of frame modules 2 and 3 to house module assemblies 6 and 7
• the drilling rig 10 is designed to be run back and forth along the transverse sliding rails 16 and 17
• the drilling deck is equipped with sliding blocks 21 By 0 running the entire rig along the rails 12 and 13 and the drilling deck 10 including the derrick 1 1 along the sliding rails 16 and 17, the derrick may be positioned over any point within a defined relevant area
• the frame modules 2 and 3 and the piping decks 8 and 9 may if required consist of - ⁇ several submodules in order to reduce the size and weight of the individual elements to be transported
• the modules 2, 4, 6 and 8 are arranged in a first column 30, and the modules 3, 5, 7 and 9 are arranged in a second column 31
• a space 32 is defined 0 between the columns 30 and 31
• Figure 3 shows a side view of the rig according to the invention, along the direction of the sliding rails 12 and 13
• the first frame module 2 can be seen, which module contains the first lower module assembly 4
• the first upper module assembly 6 which is positioned on top of the frame module 2
• the module assembly 6 is shown as a trussed construction in ordei to indicate the fact that it is load-bearing.
• the drilling deck 10 with the derrick 1 1 , the control room 18 and the module 19 can also be seen.
• a hoisting winch 22 and a top-drive 23 is also shown in detail, in two positions.
• the drilling deck 10 is shown in a first outer position at the extreme right-hand side of the drawing, in a solid line. A part of the drilling deck 10 is shown in a second outer position at the extreme left-hand side of the drawing, in a broken line.
• Figure 4 shows the rig according to the present invention, seen in the direction across 10 sliding rails 12 and 13.
• the BOP frame 14, the frame modules 2 and 3 containing the lower module assemblies 4 and 5, the upper module assemblies 6 and 7, the piping decks 8 and 9, the drilling deck 10 arranged on sliding rails 16 and 17, the control room 18, and the derrick 1 1 may be seen.
• skidding cylinders 24 are shown in detail, which cylinder is equipped with a gripper 25 and is designed to pull and push the rig along the sliding rails 12 and 13.
• Figure 4 also shows that the derrick 1 1 may be modular, consisting of e.g. two modules 11a and 1 lb, where module 1 lb is to be placed on top of module 1 1a. 5
• the first column 30 may for instance be designed to contain equipment that is primarily associated with process activities, while the other column may be designed to contain auxiliary and service functions. Furthermore, the first piping deck 8 may contain a rack for drill pipes, while the second piping deck 9 may contain a rack for casings. 0
• the modules will be connected in an appropriate manner by use of assembly details.
• the connecting-up of modules is a technique that is well known to a person skilled in the art, and as such does not require a detailed explanation.

Landscapes

• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Earth Drilling (AREA)
• Executing Machine-Instructions (AREA)
• Braking Arrangements (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Dowels (AREA)
• Catching Or Destruction (AREA)
• Drilling Tools (AREA)
• Drilling And Boring (AREA)
• Connection Or Junction Boxes (AREA)
• A Measuring Device Byusing Mechanical Method (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 2000
  • 2000-01-03 NO NO20000018A patent/NO310736B1/no not_active IP Right Cessation
• 2001
  • 2001-01-03 JP JP2001549882A patent/JP2003519305A/ja not_active Withdrawn
  • 2001-01-03 CA CA002394300A patent/CA2394300A1/fr not_active Abandoned
  • 2001-01-03 AT AT01900794T patent/ATE321931T1/de not_active IP Right Cessation
  • 2001-01-03 EP EP01900794A patent/EP1246995B1/fr not_active Expired - Lifetime
  • 2001-01-03 US US10/169,929 patent/US20030102166A1/en not_active Abandoned
  • 2001-01-03 AU AU25591/01A patent/AU2559101A/en not_active Abandoned
  • 2001-01-03 DE DE60118335T patent/DE60118335D1/de not_active Expired - Lifetime
  • 2001-01-03 KR KR1020027008641A patent/KR100745234B1/ko active IP Right Grant
  • 2001-01-03 BR BRPI0107385-0A patent/BR0107385B1/pt not_active IP Right Cessation
  • 2001-01-03 WO PCT/NO2001/000002 patent/WO2001049966A1/fr active IP Right Grant

Non-Patent Citations (1)

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