EP2580423A2 - Auslaufbegrenzungssystem für auslaufende unterwasserbohrungen - Google Patents

Auslaufbegrenzungssystem für auslaufende unterwasserbohrungen

Info

Publication number
EP2580423A2
EP2580423A2 EP11727339.1A EP11727339A EP2580423A2 EP 2580423 A2 EP2580423 A2 EP 2580423A2 EP 11727339 A EP11727339 A EP 11727339A EP 2580423 A2 EP2580423 A2 EP 2580423A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
bop
oil
methanol
chimney
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP11727339.1A
Other languages
English (en)
French (fr)
Other versions
EP2580423B1 (de
Inventor
Rene Pascal Emile Freund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOREALIS OFFSHORE CONSULTANTS AS
Original Assignee
BOREALIS OFFSHORE CONSULTANTS 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 BOREALIS OFFSHORE CONSULTANTS AS filed Critical BOREALIS OFFSHORE CONSULTANTS AS
Publication of EP2580423A2 publication Critical patent/EP2580423A2/de
Application granted granted Critical
Publication of EP2580423B1 publication Critical patent/EP2580423B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • E21B43/0122—Collecting oil or the like from a submerged leakage

Definitions

  • the present invention concerns an assembly forming a containment system for run-away subsea wells.
  • Said system comprises a sleeve with dimensions larger than the relevant Blow-Out Preventer (BOP) device of the oil-well topped by a frustrum roof forming a funnel above the BOP, said roof being equipped with an exhaust chimney with a closure valve including a connection device for anchoring sealing and/or anchoring equipment to said exhaust chimney, the assembly further comprising a number of suction anchor pods disposed at the periphery of the sleeve, said sleeve also including an injection inlet for grout at its base and said roof including at least one injection inlet for methanol and at least one outlet oil/water/methanol mixture.
  • the sleeve may in a preferred embodiment include a level gauge for monitoring the level of injected grout.
  • One of the problems to be solved with the present invention is to provide a containment system for run-away oil wells in deep-sea drilling.
  • BOP blow-out preventer
  • BOPs according to the prior art include the device disclosed in US patent 4.416.565 A comprising a cylinder with a funnel-shaped roof being constructed as a chimney with a valve to be placed over a well with an uncontrolled blow-out.
  • the cylinder has an exit leading oil and gas to the surface.
  • the containment system according to the present invention comprises the following elements:
  • a sleeve (preferably cylindrical) (item 1A) , in one embodiment approximately 4 m in diameter and 12 m high (the dimensions being adjusted to the relevant BOP over which the sleeve is to fit, specified by the supplier of the BOP) ;
  • an exhaust chimney (item 1C) (in one embodiment with a diameter of up to 36") equipped with a closure valve and crowned by a flange, which can be used as a base for anchoring and sealing equipment or pipe landed at the top of the chimney in the event of unforeseen intervention.
  • the suction anchor pods may in one embodiment have a diameter of about 1.5 m and will include penetration marks and pressure control valves.
  • a grouting system comprising manifolded injection lines (item 3A) at the base of the sleeve and a level gauge (item 3B) at the top of the sleeve.
  • a methanol injection system comprising small bore branched pipes (item 4A) piercing the conical roof of the sleeve and preferably associated with a gauge (4B) which measures the relative concentration of seawater and
  • outlets (item 5) at the base of the chimney each activated by a closure valve and connected to an export riser conveying the oily mixture to the sea surface. While one outlet only should normally be open at any time, the other inactive outlets would enhance the redundancy of the export system in the event of the active line becoming clogged. Furthermore, using a different diameter for each outlet line, e.g. from a diameter of 6" to a diameter of 12", would allow adapting to variations in the debit of the uncontrolled well and hence optimize the flow in the riser throughout the duration of the operation.
  • the number of outlet/export lines (item 5) could be 2, 3 or 4, possibly more, each optionally characterized by a specific diameter different from each other.
  • outlet lines would also make the containment system according to the present invention more versatile.
  • the outlet line in use is clogging up through the (unforeseen) formation of hydrates or an unexpected production of sand
  • the material of the parts of the device/system according to the present invention is to be metal or a metal alloy withstanding the conditions of pressure and temperature existing at the oil-well in question. Also the metal or metal alloy should be non-corrosive (at least for a period of time relevant for making the oil-well safe) .
  • the metal of choice is steel, tempered steel or stainless steel.
  • the present invention also includes a process for stopping the oil and gas outflow from a run-away oil-well
  • the process for stopping such outflow includes the following steps:
  • the container/sleeve is lowered over the BOP with the main chimney valve open to allow free exhaust of the oil and gas bursting from the top of the (damaged) BOP.
  • Methanol may be injected through line (4) at this early stage to prevent hydrate formation and clogging of the chimney .
  • valves of the suction pods (2) are activated in order to create a hydrostatic depression sufficient to drive the main container (1) deep into the sea bottom, and hence achieve adequate sealing at its base.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP20110727339 2010-06-10 2011-06-10 Leckagerückhaltesystem für leckende untersee bohrlöcher Not-in-force EP2580423B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20100830A NO334010B1 (no) 2010-06-10 2010-06-10 Utslippoppdemmingsanordning for undervannsutblåsende oljebrønner
PCT/NO2011/000170 WO2011155848A2 (en) 2010-06-10 2011-06-10 Leakage containment system for run-away subsea wells

Publications (2)

Publication Number Publication Date
EP2580423A2 true EP2580423A2 (de) 2013-04-17
EP2580423B1 EP2580423B1 (de) 2015-05-20

Family

ID=44627403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110727339 Not-in-force EP2580423B1 (de) 2010-06-10 2011-06-10 Leckagerückhaltesystem für leckende untersee bohrlöcher

Country Status (4)

Country Link
US (1) US20130140036A1 (de)
EP (1) EP2580423B1 (de)
NO (1) NO334010B1 (de)
WO (1) WO2011155848A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO337710B1 (no) * 2013-05-22 2016-06-06 Borealis Offshore Consultants As Beholder-sammenstilling for omslutting og kontroll av en undervannsbrønn ved ukontrollert utblåsing og fremgangsmåte for islolering og kontroll av en ukontrollert utblåsende undersjøisk oljebrønn
GB2516923A (en) * 2013-08-07 2015-02-11 John Butkus Sub-Sea oil / gas capping device
BR112016006924A2 (pt) * 2013-10-21 2017-08-01 Total Sa sistema de contenção e método para usar dito sistema de contenção
WO2015105952A1 (en) * 2014-01-13 2015-07-16 Shell Oil Company Methods of preventing hydrate formation in open water capture devices
CN105501416B (zh) * 2015-12-16 2018-06-01 深圳海油工程水下技术有限公司 水下集油箱及其使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548605A (en) * 1969-05-07 1970-12-22 Texaco Development Corp Submergible vehicle for emergency offshore gas leakage
US4318442A (en) * 1979-09-27 1982-03-09 Ocean Resources Engineering, Inc. Method and apparatus for controlling an underwater well blowout
US4283159A (en) * 1979-10-01 1981-08-11 Johnson Albert O Protective shroud for offshore oil wells
NO153938C (no) 1979-11-02 1986-06-18 Ostlund As Fremgangsmaate ved oppfangning og separasjon av olje, vann og gass fra en oljebroenn og en utligningskolonne for utfoerelse av fremgangsmaaten.
FR2852917B1 (fr) 2003-03-26 2005-06-24 Saipem Sa Receptacle a compartiments etanches et procede de mise en place pour recuperer des effluents polluants d'une epave
US20110299930A1 (en) * 2010-06-04 2011-12-08 Messina Frank D Subsea oil leak stabilization system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011155848A2 *

Also Published As

Publication number Publication date
NO334010B1 (no) 2013-11-18
EP2580423B1 (de) 2015-05-20
WO2011155848A2 (en) 2011-12-15
WO2011155848A3 (en) 2012-04-12
NO20100830A1 (no) 2011-12-12
US20130140036A1 (en) 2013-06-06

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