WO2011124961A2 - Dual drilling activity drilling ship - Google Patents
Dual drilling activity drilling ship Download PDFInfo
- Publication number
- WO2011124961A2 WO2011124961A2 PCT/IB2011/000706 IB2011000706W WO2011124961A2 WO 2011124961 A2 WO2011124961 A2 WO 2011124961A2 IB 2011000706 W IB2011000706 W IB 2011000706W WO 2011124961 A2 WO2011124961 A2 WO 2011124961A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drilling
- ship
- risers
- center
- drilling center
- Prior art date
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 54
- 230000009977 dual effect Effects 0.000 title description 8
- 230000000694 effects Effects 0.000 title description 4
- 238000000034 method Methods 0.000 claims 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
-
- 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
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
Definitions
- This invention relates generally to offshore drilling operations.
- Offshore drilling operations may be implemented with a variety of different platforms which may be secured to the seabed floor. These platforms may be effective at shallower depths. In greater depths, it is generally desirable to use ships or semi-submersible rigs to conduct such deep water drilling operations.
- ships or rigs may be precisely positioned at a desired location so that the drilling equipment may be operated to precisely drill wells at desired locations.
- the ship or rig may be maintained in position under dynamic positioning, even in extreme seas.
- a "ship” is a floating platform capable of propulsion on its own or by being pushed, pulled, or towed. It includes semi-submersible rigs and self-propelled vessels.
- a number of exploration wells may be drilled, one after another, in a deep water offshore environment, such as the outer continental shelf of the United States, Africa, Asia, or Western Europe.
- a deep water offshore environment such as the outer continental shelf of the United States, Africa, Asia, or Western Europe.
- the large number of operations must be performed when successfully drilling a number of exploration wells, even in the same area, may be extremely time consuming because of the complexity of deep water operations.
- So called dual activity drilling ships are known.
- a pair of derricks may be provided on the ship, which provide a structural support for underlying drilling tubulars.
- the dual derricks may be operated in some degree in parallel. For example, while one operation is occurring on one derrick, another operation may be implemented on another derrick. However, any in case, only one well may be drilled, one of the drilling centers being used for drilling and the other center being used for supporting a single drilling operation.
- Figure 1 is a top plan view of a drilling ship in accordance with one
- Figure 2 is a side elevational view of the ship shown in Figure 1 in accordance with one embodiment
- Figure 3 is a schematic depiction of a drilling operation from the main drilling center on the ship shown in Figure 2 in accordance with one embodiment
- Figure 4 is a schematic depiction of drilling from the secondary drilling center in accordance with one embodiment.
- Figure 5 is a schematic depiction of the disconnection of the main drilling center from the well head in response to a failure, in accordance with one
- a dual drilling activity drilling ship 10 may be a ship capable of drilling operations in deep and ultra deep water.
- the ship 10 may also be a semi-submersible rig, as well.
- the ship may be equipped with conventional dynamic positioning controls which enable the ship to be precisely positioned at a precisely determined location. Moreover, the ship may be held precisely in position during drilling operations pursuant to computer control.
- a main drilling center 14 and a secondary drilling center 12 may be provided. Each of these drilling centers is capable of running risers.
- the main drilling center 14 is used for primary drilling operations. In the event of a failure, the main drilling center can be disconnected, the ship can be moved to position the secondary drilling center 12, and risers may be lowered from the secondary drilling center to drill a relief well in association with the failed drilling operation from the main drill center.
- Dual drilling activity drilling ships may have a wide variety of applications. For example, in arctic drilling operations, it is generally desired to have a backup drill ship on site. That way, if the primary drill ship runs into a problem, the secondary drill ship can take over. But given the cost of drilling ships, having two ships on site is extremely expensive. In accordance with some embodiments of the present invention, a single drill ship can perform the same capabilities that required two drilling ships in the past. It should be noted that conventional dual activity drill ships cannot drill from two different centers and do not have the capability of supplying risers for marine drilling from two different centers.
- the main and secondary drilling centers may be implemented by hydraulic RAM devices.
- derricks or superstructures may be provided. Such derricks or superstructures may provide structural support for the tubulars hung from such derricks.
- tubulars may be supported directly on the ship's deck. This avoids the need for expensive, heavy derricks to support the tubulars.
- masts, or guides may be provided to guide the tubulars when they are in their uphauled positions.
- tubular storage facilities may be utilized.
- the derricks are of sufficient strength that tubulars may be stored by simply leaning them against the insides of the derricks.
- tubular storage systems, set back envelopes, and racks may be provided to hold the assembled or partially assembled tubulars.
- racks 30 and 32 are associated with the secondary drilling center 12 and racks 34 and 36 may be associated with the main drilling center 14.
- the racks 34 and 36 may hold a variety of tubulars, including risers.
- the racks 30 and 32, associated with the secondary drilling center may also hold a variety of tubulars, including risers.
- the risers used in association with the secondary drilling center may be smaller diameter risers to reduce the overall load on the ship, while still providing full drilling capability from the secondary drilling center.
- a conventional marine drilling riser may have a nominal 21 1 ⁇ 4 inches inside diameter, while the risers stored in the racks 30 and 32, associated with the secondary drilling center, may be a smaller diameter, such as 13% inch internal diameter, 10, OOOpsi risers.
- racks 32 and 36 are shown to the port side of the drilling centers 12 and 14, the racks may be positioned fore and aft or both fore and aft and port and starboard positions in some embodiments. Moreover, as described above, in some embodiments, separate racks may not be needed and the tubulars may be simply leaned against the drilling centers 12 and 14 when possible.
- Conventional equipment may be used for advancing, running, withdrawing, lifting, or rotating the tubulars to the seabed and, ultimately, into the seabed floor.
- waste, top drives, sheaves, draw works, rotary tables, traveling blocks, motion compensators, hydraulic RAMS, or any other known equipment may be utilized.
- the hydraulic RAM may support tubulars on the deck, but derricks may support tubulars from above the deck.
- the present invention is in no way limited to any particular equipment.
- the main drilling center 14 includes riser tensioners 22. It also includes the marine riser 24, which may be nominally 21 1 ⁇ 4 inch outside diameter conventional marine riser in one embodiment. A mechanical override emergency riser disconnector 25 may be provided at the bottom of the riser 24.
- LMRP lower marine riser package
- BOP blowup preventer
- the BOP 26 may, in one embodiment, be a conventional 183 ⁇ 4 inch inside diameter subsea blowout preventer in one embodiment.
- a lower marine riser package (LMRP) 27 is coupled to the blowout preventer
- the SSA 27 may have controls that are independent from the controls used for the BOP 26.
- the subsea shutoff assembly may be 183 ⁇ 4 inch internal diameter, conventional equipment.
- a subsea wellhead 28 may be cemented into the seabed.
- the wellhead may be an 183 ⁇ 4 inch inside diameter conventional wellhead, in some embodiments.
- the wellhead 28 may be established from the main drilling center 14 and if no problems develop, the secondary drilling center 12 may not be needed.
- dual activity may be implemented so that some tubulars may be made up in advance from the secondary drilling center 12 to facilitate drilling from the main drilling center 14.
- the drilling center 12 is only held for backup in case a failure occurs in connection with the main drilling center 14.
- a blowout preventer with a slim high pressure riser 40 enables drilling of a relief well from the secondary well center 12. This may be advantageous when a failure occurs in the main drilling center and the main drilling center can no longer be operated. For safety reasons, it may be desired to provide a relief well as soon as possible. However, a second drilling ship may not be needed, in some embodiments, since this capability may be provided on board a single drilling ship.
- the riser tensioners 38 may be permanently installed on the secondary well center 12.
- An upper blowout preventer 39 may be provided.
- the BOP 39 may be a 13% inch inside diameter blowout preventer.
- the riser 40 may be a smaller diameter riser that is capable of handling 10,000psi pressure and having an internal diameter of 3% inch in one embodiment. Because it has a smaller diameter, the riser 40 can be more easily carried on the same ship with the riser 24 without overweighting the ship, in some embodiments.
- a lower marine riser package (LMRP) 42a is used for disconnecting the riser 40 from the lower blowout preventer 42.
- the lower blowout preventer 42 may be a 13% inch diameter conventional blowout preventer.
- a subsea wellhead 28 with a slim internal diameter may be cemented into the seabed. In one embodiment, it may have an 183 ⁇ 4 inch inside diameter.
- One application for the ship 10 may be the situation where there is an initial, uncontrolled flow of hydrocarbons through the main drilling center 14, including a blowout, with the well finally contained by closing in the well at the RAMs on the independently controlled subsea shutoff assembly 27.
- the riser 24 cannot be released from the blowout preventer 26 due to the total failure of the controls cable and acoustic release device on the blowout preventer 26 and independent release of the LMRP 27a between the BOP 26 and SSA 27.
- the situation shown in Figure 5 would be one example where drilling a relief well would be required to control internal pressures of the well or to control uncontrolled flow of hydrocarbons from the well in the subsea surface environment because of external blowout.
- the relief well may be drilled utilizing the same ship 10.
- the drilling ship 10 is moved to locate the secondary drilling center 12 aligned over a relief well surface location.
- the relief well may be spuded, utilizing the secondary well center 12.
- the subsea blowout preventer and riser configuration shown in Figure 4 may be run.
- the subsea blowout preventer and riser system and tensioners 38 may be hung off and tensioned and the telescopic joint extended to the well center 12.
- the relief well may be drilled from the secondary well center.
- the main drilling center and the secondary drilling center may carry 5000 feet of riser at each center. This is sufficient riser length for drilling in many offshore regions, including the arctic, where the maximum depth is about 3500 feet.
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011236556A AU2011236556B2 (en) | 2010-04-07 | 2011-03-28 | Dual drilling activity drilling ship |
RU2012147270/11A RU2549301C2 (en) | 2010-04-07 | 2011-03-28 | Drilling ship with two drilling centres |
GB1217371.2A GB2491533B (en) | 2010-04-07 | 2011-03-28 | Dual drilling activity drilling ship |
BR112012025363A BR112012025363A2 (en) | 2010-04-07 | 2011-03-28 | double activity drilling rig |
NO20121291A NO20121291A1 (en) | 2010-04-07 | 2012-11-02 | Drilling vessel with dual drilling activity |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/755,565 US20110247827A1 (en) | 2010-04-07 | 2010-04-07 | Dual Drilling Activity Drilling Ship |
US12/755,565 | 2010-04-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011124961A2 true WO2011124961A2 (en) | 2011-10-13 |
WO2011124961A3 WO2011124961A3 (en) | 2012-11-29 |
Family
ID=44583186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2011/000706 WO2011124961A2 (en) | 2010-04-07 | 2011-03-28 | Dual drilling activity drilling ship |
Country Status (8)
Country | Link |
---|---|
US (1) | US20110247827A1 (en) |
AU (1) | AU2011236556B2 (en) |
BR (1) | BR112012025363A2 (en) |
GB (1) | GB2491533B (en) |
MY (1) | MY166256A (en) |
NO (1) | NO20121291A1 (en) |
RU (1) | RU2549301C2 (en) |
WO (1) | WO2011124961A2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2567057A4 (en) | 2010-05-03 | 2017-08-09 | Keith K. Millheim | Safety system for deep water drilling units using a dual blow out preventer system |
BR112014017546A2 (en) | 2012-01-18 | 2017-09-19 | Maersk Supply Service As | method for extracting oil from a reservoir |
US9222327B2 (en) * | 2012-11-28 | 2015-12-29 | Stena Drilling Ltd. | Well safety equipment |
WO2014140367A2 (en) * | 2013-03-15 | 2014-09-18 | A.P. Møller-Mærsk A/S | An offshore drilling rig and a method of operating the same |
US10202808B2 (en) * | 2013-03-15 | 2019-02-12 | Maersk Drilling A/S | Offshore drilling rig and a method of operating the same |
ITMI20131733A1 (en) * | 2013-10-17 | 2015-04-18 | Eni Spa | PROCEDURE FOR REALIZING A WELL TO EXPLOIT A FIELD UNDER A MARINE OR OCEANIC BOTTOM |
KR102228014B1 (en) * | 2014-04-29 | 2021-03-16 | 핀칸티에리 오일 앤드 가스 에스.피.에이. | Drillship |
CA2986946C (en) | 2015-05-29 | 2022-01-18 | Maersk Drilling A/S | Arctic drilling process |
BR112019010243B1 (en) * | 2016-12-08 | 2023-02-14 | Kinetic Pressure Control, Ltd | COUPLING SYSTEM, AND METHOD FOR SEPARATING A BOTTOM MARINE RAISER ASSEMBLY FROM A BURST PREVENTOR COUPLED TO A SUBSEA WELL HEAD |
US11187052B2 (en) * | 2016-12-08 | 2021-11-30 | Kinetic Pressure Control Ltd. | Explosive disconnect |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES450616A1 (en) * | 1976-08-11 | 1977-07-16 | Fayren Jose Marco | Apparatus and method for offshore drilling at great depths |
US4819730A (en) * | 1987-07-24 | 1989-04-11 | Schlumberger Technology Corporation | Development drilling system |
US5103920A (en) * | 1989-03-01 | 1992-04-14 | Patton Consulting Inc. | Surveying system and method for locating target subterranean bodies |
US5184686A (en) * | 1991-05-03 | 1993-02-09 | Shell Offshore Inc. | Method for offshore drilling utilizing a two-riser system |
US5657823A (en) * | 1995-11-13 | 1997-08-19 | Kogure; Eiji | Near surface disconnect riser |
US6085851A (en) * | 1996-05-03 | 2000-07-11 | Transocean Offshore Inc. | Multi-activity offshore exploration and/or development drill method and apparatus |
US6273193B1 (en) * | 1997-12-16 | 2001-08-14 | Transocean Sedco Forex, Inc. | Dynamically positioned, concentric riser, drilling method and apparatus |
US6443240B1 (en) * | 1999-10-06 | 2002-09-03 | Transocean Sedco Forex, Inc. | Dual riser assembly, deep water drilling method and apparatus |
RU2209294C2 (en) * | 2001-04-23 | 2003-07-27 | Федеральное государственное унитарное предприятие "Производственное объединение "Баррикады" | Underwater drilling and mineral mining complex, method of its installation and its control system |
BRPI0809450A2 (en) * | 2007-03-26 | 2014-09-09 | Technip France | FLOATING INSTALLATION, SYSTEM FOR PERFORMING FIELD DEVELOPMENT DRILLING AND COMPLETING / PRODUCTION WORK, AND METHOD FOR PERFORMING FIELD DEVELOPMENT PERFORMANCE WITH COMPLETE WELL OR PRODUCTION WORK FROM A FLOATING INSTALLATION. |
US7628224B2 (en) * | 2007-04-30 | 2009-12-08 | Kellogg Brown & Root Llc | Shallow/intermediate water multipurpose floating platform for arctic environments |
CN103847932B (en) * | 2008-02-15 | 2016-11-23 | 伊特雷科公司 | offshore drilling vessel |
-
2010
- 2010-04-07 US US12/755,565 patent/US20110247827A1/en not_active Abandoned
-
2011
- 2011-03-28 GB GB1217371.2A patent/GB2491533B/en not_active Expired - Fee Related
- 2011-03-28 BR BR112012025363A patent/BR112012025363A2/en not_active IP Right Cessation
- 2011-03-28 RU RU2012147270/11A patent/RU2549301C2/en not_active IP Right Cessation
- 2011-03-28 WO PCT/IB2011/000706 patent/WO2011124961A2/en active Application Filing
- 2011-03-28 AU AU2011236556A patent/AU2011236556B2/en not_active Ceased
- 2011-03-31 MY MYPI2011001438A patent/MY166256A/en unknown
-
2012
- 2012-11-02 NO NO20121291A patent/NO20121291A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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None |
Also Published As
Publication number | Publication date |
---|---|
RU2012147270A (en) | 2014-05-20 |
AU2011236556A1 (en) | 2012-10-25 |
BR112012025363A2 (en) | 2016-06-28 |
GB2491533A (en) | 2012-12-05 |
GB2491533B (en) | 2015-07-08 |
AU2011236556B2 (en) | 2015-10-08 |
GB201217371D0 (en) | 2012-11-14 |
RU2549301C2 (en) | 2015-04-27 |
MY166256A (en) | 2018-06-22 |
WO2011124961A3 (en) | 2012-11-29 |
NO20121291A1 (en) | 2012-11-02 |
US20110247827A1 (en) | 2011-10-13 |
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