WO1999027222A1 - Arrangement for workover and drilling of offshore wells - Google Patents

Arrangement for workover and drilling of offshore wells Download PDF

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Publication number
WO1999027222A1
WO1999027222A1 PCT/NO1998/000342 NO9800342W WO9927222A1 WO 1999027222 A1 WO1999027222 A1 WO 1999027222A1 NO 9800342 W NO9800342 W NO 9800342W WO 9927222 A1 WO9927222 A1 WO 9927222A1
Authority
WO
WIPO (PCT)
Prior art keywords
rig
arrangement
hwr
snubbing
centre
Prior art date
Application number
PCT/NO1998/000342
Other languages
French (fr)
Inventor
Harald MØKSVOLD
Original Assignee
Mercur Subsea Products As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mercur Subsea Products As filed Critical Mercur Subsea Products As
Publication of WO1999027222A1 publication Critical patent/WO1999027222A1/en

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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
    • 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 relates to an arrangement in connection with drilling and workover of offshore wells, especially with snubbing and coil tubing, and more specifically an arrangement where the rig comprises two rig centres for snubbing and coil tubing operations respec- tively.
  • a basic object of the present invention is to provide a modular drilling and workover system involving safer and more efficient snubbing, drilling and coil tubing operation in oil and gas wells.
  • Another object of the invention is to provide " subsea type" Quick-Stab Guidefunnels/Locking Connectors between each module and in each corner in order to minimise rig- up/rig-down time and to enhance safety.
  • Yet another object of the invention is to provide a rig with two operation centres .
  • Yet another object of the invention is to provide a rig where the HWR (snubbing unit) will be installed permanently in one rig centre inside the Rig Structure, installed on a separate Compensation System to allow for a vertical heave movement due to heave or heat expansion and where the HWR is installed in a vertical rail system in order to accommodate multiple stack-up arrangement heights of the blow-out prevention system.
  • HWR damping unit
  • Still another object of the invention is to provide a rig where equipment for the Coil Tubing operation and tripping of tubulars will be permanently installed.
  • Another object of the present invention is to provide a rig which can be positioned in either of the two operation centres .
  • Still another object of the present invention is to provide a hang-off structure below the rig in order to hang off tubulars and BOP ' s when the rig shall be shifted between the two operation centres.
  • the modular rig have drilling, coil tubing and snubbing capabilities and can also retrieve and install Production Riser and Flow Head/Xmas Trees.
  • the rig is prepared for side-track drilling as standardised system components are integrated in the invention.
  • the individual rig modules 20 have been designed with «subsea type « Quick-Stab Guidefunnels /Locking Connectors in each corner.
  • the unit is designed with two operation centres.
  • the Rig is fully automated with remote operation of pipe- handling and snubbing operations.
  • the Rig Riser Tension Compensation System will compensate for the movement of the Production Assembly and will also be used for soft landing of Well Control Equipment onto the X as Tree/Flow Tree Assembly and also for landing of production riser into the template.
  • the HWR (snubbing unit) will be installed permanently in- side the Rig Structure and is installed on a separate
  • the HWR is installed in a vertical rail system in order to accommodate multiple stack-up arrangement heights .
  • the Rig has an Automated Pipehandling System which serves both the HWR (Snubbing) and the handling of Production Riser and Tubulars from the Tubular Tripping Centre.
  • the Automated Pipehandling System will accommodate vertical rig heave .
  • a Tubular Feeder Table transports the pipe from the Pipe Rack and to the Rig.
  • a Production Riser trolley For transport of Production Riser to and from the Rig, a Production Riser trolley will be installed onto the Tubular Feeder.
  • the Tubular Feeder is sectioned and designed to feed tubulars to the Rig in all positions.
  • the rig will be installed directly onto the Skid Frame and has been designed to enable skidding in both directions longitudinally and transverse.
  • Figures 1A and IB illustrate a front and a side view, respectively, of the rig installed on the associated skidding structure.
  • Figure 2 illustrate a 3D view of the rig
  • Figure 3 illustrate an ISO view where the components have been extracted.
  • Figure 4 illustrate the rig in the HWR (Snubbing) centre.
  • Figure 5 illustrate the rig in the Tripping and Coil Tubing Centre .
  • Figure 6 illustrate the hang-off arrangement of the BOP's and tubulars when shipting the rig to either position.
  • Figure 7 illustrate the pipe and tubular handling arrangement .
  • Figure 8 illustrate the compensation system of the BOP's and HWR (snubbing) unit.
  • Figure 9 illustrate the operation of coil tubing from the Tubular and Col tubing Centre.
  • the system or the arrangement to which the present invention relates can generally be designed as an arrangement to be installed on an oil or gas well.
  • the Rig consists of a modulized system.
  • structural as well as the functional system is given for the complete invention.
  • the Rig (1) is installed on a skidrail system (10) installed to the platform or vessel deck (11) .
  • the RSS (2) is equipped with skid jacks (12) to skid the rig along the skid rail (10) to be able to move the rig from the HWR (Snubbing) Centre (13) and to the Tubu- lar and Coil Tubing Centre (14) .
  • the RSS (2) forms the base of the Rig (1) .
  • skidd (3) Between the Skid Shoes (15), a skiddable Riser Tension Skid (3) is located.
  • the skid (3) includes a Dummy Rotary (17) and will always be located directly above the well
  • the RSS (2) is built as a framework and is terminated in a skid shoes (15) in each corner and two in the middle, total six, for skidding on the Skid Rail (10) .
  • the skid jacks (12) will position the Rig (1) and Riser Tension Skid (3) directly above the Well Centre (16). Af- ter the Riser Tension Skid (3) is locked down in position, the rig (1) is again skidded to either of the two Operation Centres (13 or 14) for the specific rig operation to be performed.
  • a Coil Tubing Assembly (18) can be installed in the Tubular and Coil Tubing Centre (14) using the Travelling Assembly (19) .
  • the Riser Tension Skid (RTS) (3) is located above the Rig Support Structure (2) and the Skid (3) is supported on the Skid Rails (10) .
  • the purpose of the RTS (3) will be to:
  • HWR unit (9) performs the drilling operation and tripping of Hook-Load weights above 150mt .
  • the Riser Tension Skid (3) will be locked to the main skid rail (10) in a position directly above the well centre (16) .
  • the Riser Tensioner Skid (3) has been designed for dual purposes.
  • the RTS (3) has integrated Riser Tension Compensation System (21).
  • the skid (3) has been designed to support hang-off loads of max. 150 MT.
  • the Rig (1) will be skidded to change working centre (13 or 14) . This can be either way i.e. from the Snubbing Centre (13) to the Tripping and Coil Tubing Centre (14) or oppo- site.
  • the Riser Tensioner Skid (3) is made of ordinary HEB beams resting of 4 skids shoes (15) .
  • the Riser Tensioning System (RTS) (21) will be an inte- grated part of the Riser Tension Skid (3) and has been designed to support all operational loads applied to the Xmas Tree (23) Assembly from the Workover BOP Assy (24) on top of the Xmas Tree (23) .
  • the Riser Tensioning System (21) will compensate for the movement of Riser (25) caused by the platform or vessel (11) . Drill Floor Module (4)
  • the Drill Floor Module (4) is the lower part of the Rig (1) structure and is resting on top of the Rig Support Structure (2) .
  • the structural system of the drill floor (26) is designed to support the following elements:
  • Support for HWR Unit Support Structure (8) including extending rails (27) for the pipe handler (28),
  • the Lower Rig Structure (5) is installed on top of the Drill Floor Module (4) .
  • This structure (5) is designed with an opening (33) wide enough to allow the travelling of the Pipe Handler (28) in the vertical plane.
  • the structural system is basically made of Box beams for the legs and Box beams for the lateral bracing system.
  • the sides of the Lower Rig Structure (5) is dressed with sheet cladding to provide shelter for wind.
  • the Middle Rig Structure (6) is supported by the Lower Rig Structure (5).
  • This structure (6) is designed with an opening (33) wide enough to allow the travelling of the Pipe Handler (28) in the vertical plane.
  • this structure (6) provides support for walk ways (36) at two levels with landings to the HWR unit (9) as well as spi- ral stairs (37) between levels.
  • the Middle Rig Structure (5) consist of a framework with Quick-Stab connections (32),
  • the Upper Rig Structure (7) is supported by the Middle
  • Rig Structure (6) This structure (7) provides support for walk ways (36) at the top level as well as support for Gin Pole (39) arrangement and Crown Block Assembly
  • the HWR Support Structure (8) provides vertical and horizontal support for the complete HWR Assembly (9) .
  • a compensating system (21) is located at the top of the support structure (8) . This system will compensate the total load including self weight of the HWR Assembly (9) .
  • the HWR Support Structure (8) also provide supports for the rails (27) of the Pipe Handler (28) all the way down to the drill floor (26) .
  • the purpose with the Structure (8) will be to:
  • HWR Load Compensators (21) to balance the HWR (9) Load.

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  • 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)

Abstract

The present invention relates to an arrangement in connection with workover, snubbing, coil tubing and drilling operation in oil and gas wells, comprising a rig (1) with two operation centres (13 and 14) and a riser tension skid (3) where the rig (1) can be shifted between the two centres (13 and 14) whilst the BOP (24) and the tubular (20) loads have been suspended in the Riser Tension Skid (3), and for the purpose of obtaining a safer and more efficient snubbing, drilling and coil tubing operation, it is according to the invention suggested that the loads (20 and 24) are suspended in a position directly above the well (16) in a structure (3) and that the rig structure (1) can be shifted above the first structure (3) to either of two positions (13 and 14).

Description

ARRANGEMENT FOR WORKOVER AND DRILLING OF OFFSHORE WELLS
Field of Invention
The present invention relates to an arrangement in connection with drilling and workover of offshore wells, especially with snubbing and coil tubing, and more specifically an arrangement where the rig comprises two rig centres for snubbing and coil tubing operations respec- tively.
Prior Art
There are previously known drilling and workover tech- niques involving drilling, snubbing and coil tubing operations from one drilling centre where the same centre will be used for either drilling, coil tubing or snubbing respectively and only one operation at the time. Such an arrangement requires that all equipment to be used for each operation must be rigged up or down inside the rig in connection with change of operation, which involves that the prior art arrangement is time-consuming.
Objects of Invention
A basic object of the present invention is to provide a modular drilling and workover system involving safer and more efficient snubbing, drilling and coil tubing operation in oil and gas wells.
Another object of the invention is to provide " subsea type" Quick-Stab Guidefunnels/Locking Connectors between each module and in each corner in order to minimise rig- up/rig-down time and to enhance safety.
Yet another object of the invention is to provide a rig with two operation centres . One HWR Centre for snubbing and rotation (drilling) and one Tubular and coil Tubing Centre for retrieval and running of Production Riser/Xmas Trees and tripping of tubulars where the hook load is less than 150mt in order of minimising the operation time .
Yet another object of the invention is to provide a rig where the HWR (snubbing unit) will be installed permanently in one rig centre inside the Rig Structure, installed on a separate Compensation System to allow for a vertical heave movement due to heave or heat expansion and where the HWR is installed in a vertical rail system in order to accommodate multiple stack-up arrangement heights of the blow-out prevention system.
Still another object of the invention is to provide a rig where equipment for the Coil Tubing operation and tripping of tubulars will be permanently installed.
Another object of the present invention is to provide a rig which can be positioned in either of the two operation centres .
Still another object of the present invention is to provide a hang-off structure below the rig in order to hang off tubulars and BOP ' s when the rig shall be shifted between the two operation centres.
Summary of the Invention
These objects are achieved in an arrangement of the type as disclosed in the preamble, and which arrangement is defined by the features as stated in the enclosed patent claims .
Further features and advantages of the present invention will appear from the following description taken in connection with the appending drawings, as well as from said enclosed patent claims and as described below. The modular rig have drilling, coil tubing and snubbing capabilities and can also retrieve and install Production Riser and Flow Head/Xmas Trees. The rig is prepared for side-track drilling as standardised system components are integrated in the invention.
In order to minimise rig-up/rig-down time and to enhance safety, the individual rig modules 20 have been designed with «subsea type« Quick-Stab Guidefunnels /Locking Connectors in each corner.
The unit is designed with two operation centres. One HWR Centre for snubbing and rotation (drilling) and one Tubu- lar and Coil Tubing Centre for retrieval and running of Production Riser/Xmas Trees and tripping of tubulars where the hook load is less than 150mt in order of minimising the operation time.
The Rig is fully automated with remote operation of pipe- handling and snubbing operations.
For tripping of tubulars from the Tubular Tripping Centre, a semi manual operation will be used where the Pipe- handling is automated and the Drawwork hoisting will be operated from the local Drawwork panel .
The Rig Riser Tension Compensation System will compensate for the movement of the Production Assembly and will also be used for soft landing of Well Control Equipment onto the X as Tree/Flow Tree Assembly and also for landing of production riser into the template.
The HWR (snubbing unit) will be installed permanently in- side the Rig Structure and is installed on a separate
Compensation System to allow for a vertical heave movement. The HWR is installed in a vertical rail system in order to accommodate multiple stack-up arrangement heights .
The Rig has an Automated Pipehandling System which serves both the HWR (Snubbing) and the handling of Production Riser and Tubulars from the Tubular Tripping Centre. The Automated Pipehandling System will accommodate vertical rig heave .
For transport of tubulars to and from the Horizontal to Vertical Pipehandler, a Tubular Feeder Table transports the pipe from the Pipe Rack and to the Rig.
For transport of Production Riser to and from the Rig, a Production Riser trolley will be installed onto the Tubular Feeder.
The Tubular Feeder is sectioned and designed to feed tubulars to the Rig in all positions.
The rig will be installed directly onto the Skid Frame and has been designed to enable skidding in both directions longitudinally and transverse.
Brief disclosure of the drawings
Figures 1A and IB illustrate a front and a side view, respectively, of the rig installed on the associated skidding structure.
Figure 2 illustrate a 3D view of the rig
Figure 3 illustrate an ISO view where the components have been extracted.
Figure 4 illustrate the rig in the HWR (Snubbing) centre. Figure 5 illustrate the rig in the Tripping and Coil Tubing Centre .
Figure 6 illustrate the hang-off arrangement of the BOP's and tubulars when shipting the rig to either position.
Figure 7 illustrate the pipe and tubular handling arrangement .
Figure 8 illustrate the compensation system of the BOP's and HWR (snubbing) unit.
Figure 9 illustrate the operation of coil tubing from the Tubular and Col tubing Centre.
General description
The system or the arrangement to which the present invention relates, can generally be designed as an arrangement to be installed on an oil or gas well.
The Rig consists of a modulized system. In the following description of the structural as well as the functional system is given for the complete invention.
In order to minimise installation time and maximise on flexibility. With this in mind the following odulizition has been designed and which is seen in figures:
- Rig Support Structure (2) - Riser Tensioning Skid (3)
- Drill Floor Module (4)
- Lower Rig Structure (5)
- Middle Rig Structure (6)
- Upper Rig Structure (7) - HWR (Snubbing Unit) Support Structure (8)
- HWR (Snubbing Unit) (9) Rig Support Structure (RSS) (2)
The Rig (1) is installed on a skidrail system (10) installed to the platform or vessel deck (11) . The RSS (2) is equipped with skid jacks (12) to skid the rig along the skid rail (10) to be able to move the rig from the HWR (Snubbing) Centre (13) and to the Tubu- lar and Coil Tubing Centre (14) .
The RSS (2) forms the base of the Rig (1) .
Between the Skid Shoes (15), a skiddable Riser Tension Skid (3) is located. The skid (3) includes a Dummy Rotary (17) and will always be located directly above the well
(16) , while the rig is skidded between the two rig operation centres (13 and 14) .
The RSS (2) is built as a framework and is terminated in a skid shoes (15) in each corner and two in the middle, total six, for skidding on the Skid Rail (10) .
The skid jacks (12) will position the Rig (1) and Riser Tension Skid (3) directly above the Well Centre (16). Af- ter the Riser Tension Skid (3) is locked down in position, the rig (1) is again skidded to either of the two Operation Centres (13 or 14) for the specific rig operation to be performed.
A Coil Tubing Assembly (18) can be installed in the Tubular and Coil Tubing Centre (14) using the Travelling Assembly (19) .
Riser Tensioning Skid (RTS) (3)
The Riser Tension Skid (RTS) (3) is located above the Rig Support Structure (2) and the Skid (3) is supported on the Skid Rails (10) . The purpose of the RTS (3) will be to:
• Allow for tripping of tubulars (20) with a Hook-Load weight less than 150mt, while the
HWR unit (9) performs the drilling operation and tripping of Hook-Load weights above 150mt .
• Support the Riser Tensioners (21) • 49,5" Dummy Rotary (22) for support of tubulars (20) during Rig (1) skidding between the two rig centres (13 and 14) .
The Riser Tension Skid (3) will be locked to the main skid rail (10) in a position directly above the well centre (16) .
The Riser Tensioner Skid (3) has been designed for dual purposes. The RTS (3) has integrated Riser Tension Compensation System (21). In addition the skid (3) has been designed to support hang-off loads of max. 150 MT. When the tubular load (20) is suspended in the skid (3), the Rig (1) will be skidded to change working centre (13 or 14) . This can be either way i.e. from the Snubbing Centre (13) to the Tripping and Coil Tubing Centre (14) or oppo- site.
The Riser Tensioner Skid (3) is made of ordinary HEB beams resting of 4 skids shoes (15) .
The Riser Tensioning System (RTS) (21) will be an inte- grated part of the Riser Tension Skid (3) and has been designed to support all operational loads applied to the Xmas Tree (23) Assembly from the Workover BOP Assy (24) on top of the Xmas Tree (23) . The Riser Tensioning System (21) will compensate for the movement of Riser (25) caused by the platform or vessel (11) . Drill Floor Module (4)
The Drill Floor Module (4) is the lower part of the Rig (1) structure and is resting on top of the Rig Support Structure (2) . The structural system of the drill floor (26) is designed to support the following elements:
Support for HWR Unit Support Structure (8) including extending rails (27) for the pipe handler (28),
Support for feeder table (29)
Support for Draw Work (30)
Support for Rotary Table (31)
Hang-off loads of 150 MT when the Rig (1) is over Tripping and Coil Tubing Centre
(14) .
Lower Rig Structure (5)
The Lower Rig Structure (5) is installed on top of the Drill Floor Module (4) . This structure (5) is designed with an opening (33) wide enough to allow the travelling of the Pipe Handler (28) in the vertical plane.
The structural system is basically made of Box beams for the legs and Box beams for the lateral bracing system. The sides of the Lower Rig Structure (5) is dressed with sheet cladding to provide shelter for wind.
Has integrated Quick- Stab connections (32)
Dolly Guide Rails (34) for the Travelling Assy (19) is installed.
Middle Rig Structure (6)
The Middle Rig Structure (6) is supported by the Lower Rig Structure (5). This structure (6) is designed with an opening (33) wide enough to allow the travelling of the Pipe Handler (28) in the vertical plane. In addition this structure (6) provides support for walk ways (36) at two levels with landings to the HWR unit (9) as well as spi- ral stairs (37) between levels.
The Middle Rig Structure (5) consist of a framework with Quick-Stab connections (32),
Dolley Guide Rails (34 and 38) for the Travelling Assy (35) and for the HWR Unit (9) are installed.
Upper Rig Structure (7)
The Upper Rig Structure (7) is supported by the Middle
Rig Structure (6) . This structure (7) provides support for walk ways (36) at the top level as well as support for Gin Pole (39) arrangement and Crown Block Assembly
(40) .
The following main equipment items will be mounted on the Upper Rig Structure (7) :
• One Retractable Crown Block Assembly (40) , 150mt.
• One 150 t Travelling Block (19) complete with retractable dolley system.
HWR Support Structure (8'
The HWR Support Structure (8) provides vertical and horizontal support for the complete HWR Assembly (9) . At the top of the support structure (8) a compensating system (21) is located. This system will compensate the total load including self weight of the HWR Assembly (9) . The HWR Support Structure (8) also provide supports for the rails (27) of the Pipe Handler (28) all the way down to the drill floor (26) . The purpose with the Structure (8) will be to:
• Interface to a HWR (Snubbing Unit) (9)
• Accommodate the HWR Compensation System (41) o nullify HWR (9)
Weight and the max. lifting capacity.
• Allow the HTV Pipehandler (28) to transport the tubulars (20) from the Drill Floor Level (26) .
Included in the Structure (8) are the HWR Load Compensators (21) to balance the HWR (9) Load.

Claims

P a t e n t c l a i m s
1. Arrangements in connection with workover, snubbing, coiltubing and drilling operation in oil and gas wells, comprising a rig (1) with two operation centres (13 and 14) and a riser tension skid (3) where the rig (1) can be shifted between the two centres (13 and 14) whilst the BOP (24) and the tubular (20) loads have been suspended in the Riser Tension Skid (3), c h a r a c t e r i z e d i n that the loads (20 and 24) are suspended in a position directly above the well (16) in a structure (3) and that the rig structure (1) can be shifted above the first structure (3) to either of two positions (13 and 14) .
2. Arrangement as claimed in claim 1, c h a r a c t e r i z e d i n that said arrangement comprises two operation centres (13 and 14) where a HWR Snubbing Rig (9) is installed in one operation centre (13) and a traditional drilling system (19, 30, 40) is installed in the other operation centre (14).
3. Arrangement as claimed in claim 2, c h a r a c t e r i z e d i n that said arrangement comprises an arrangement for installation of a standard coil tubing assembly (18) in the other operation centre (14) namely the tripping and coil tubing centre (14) .
4. Arrangement as claimed in claim 2 , c h a r a c t e r i z e d i n that said arrangement comprises a compensation system (21) for the HWR Snubbing Rig (9) to allow for a vertical heave movement due to heave or heat expansion and where the HWR (9) is installed in a vertical rail system (38) in order to accom- modate multiple stack-up arrangement heights of the blowout prevention system (24) .
5. Arrangement as claimed in claim 2 , c h a r a c t e r i z e d i n that said arrangement comprises a tubular handling system (28) which handles tubulars to or from both the operational centres (13 and 14) .
6. Arrangement as claimed in claim 1, c h a r a c t e r i z e d i n that said arrangement is modularized and that the structural modules are fitted together by «subsea type« Quick-Stab Guidefunnels/Locking Connectors (32) between each module and in each corner .
7. Arrangement as claimed in claim 1, c h a r a c t e r i z e d i n that the HWR Centre (13) will be used for snubbing and rotation (drilling) and the _Tubular and Coil Tubing Centre (14) will be used for retrieval and running of Production Riser (25) and Xmas Trees (23), tripping of tubulars (20) where the hook load is less than 150mt in order of minimising the operation time and operation of coil tubing (18) and where the HWR Snubbing Unit (9) will be used for all loads above 150mt .
PCT/NO1998/000342 1997-11-21 1998-11-20 Arrangement for workover and drilling of offshore wells WO1999027222A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO975344 1997-11-21
NO975344A NO975344D0 (en) 1997-11-21 1997-11-21 Device at well, especially at associated rig

Publications (1)

Publication Number Publication Date
WO1999027222A1 true WO1999027222A1 (en) 1999-06-03

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WO (1) WO1999027222A1 (en)

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WO2001057355A1 (en) * 2000-02-03 2001-08-09 Precision Drilling Corporation Linear coiled tubing injector/hybrid sectional and coiled tubing drilling rig
US6315051B1 (en) 1996-10-15 2001-11-13 Coupler Developments Limited Continuous circulation drilling method
US6688394B1 (en) 1996-10-15 2004-02-10 Coupler Developments Limited Drilling methods and apparatus
US6868902B1 (en) 2002-01-14 2005-03-22 Itrec B.V. Multipurpose reeled tubing assembly
US6901998B1 (en) 2003-03-17 2005-06-07 Itrec B.V. Method for using a multipurpose system
US6932553B1 (en) 2003-03-17 2005-08-23 Itrec, B.V. Multipurpose unit for drilling and well intervention
US6966106B1 (en) 2002-01-14 2005-11-22 Itrec B.V. Method and apparatus for transporting and running tubulars
US20120318530A1 (en) * 2009-11-24 2012-12-20 Odim Jmc As Device for a Tower for Well Operations and Use of Same
US8511385B2 (en) 2007-06-26 2013-08-20 Agility Projects As Well apparatus
NL2014867A (en) * 2015-05-27 2016-12-08 Well Gear Group B V Workover unit, mobile workover unit provided therewith, and method for providing a workover unit.

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WO1985001775A1 (en) * 1983-10-07 1985-04-25 Gusto Engineering B.V. Heave compensation for a pipeline hoisting system
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US6315051B1 (en) 1996-10-15 2001-11-13 Coupler Developments Limited Continuous circulation drilling method
US6688394B1 (en) 1996-10-15 2004-02-10 Coupler Developments Limited Drilling methods and apparatus
WO2001057355A1 (en) * 2000-02-03 2001-08-09 Precision Drilling Corporation Linear coiled tubing injector/hybrid sectional and coiled tubing drilling rig
US6868902B1 (en) 2002-01-14 2005-03-22 Itrec B.V. Multipurpose reeled tubing assembly
US6966106B1 (en) 2002-01-14 2005-11-22 Itrec B.V. Method and apparatus for transporting and running tubulars
US6901998B1 (en) 2003-03-17 2005-06-07 Itrec B.V. Method for using a multipurpose system
US6932553B1 (en) 2003-03-17 2005-08-23 Itrec, B.V. Multipurpose unit for drilling and well intervention
US8511385B2 (en) 2007-06-26 2013-08-20 Agility Projects As Well apparatus
US20120318530A1 (en) * 2009-11-24 2012-12-20 Odim Jmc As Device for a Tower for Well Operations and Use of Same
NL2014867A (en) * 2015-05-27 2016-12-08 Well Gear Group B V Workover unit, mobile workover unit provided therewith, and method for providing a workover unit.
WO2016190742A3 (en) * 2015-05-27 2016-12-29 Well Gear Group B.V. Workover unit, mobile workover unit provided therewith, and method for providing a workover unit

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