NO20082723L - Fremgangsmate for a variere densiteten i borefluider ved anvendelser for dypt vanns olje- og gassboring - Google Patents

Fremgangsmate for a variere densiteten i borefluider ved anvendelser for dypt vanns olje- og gassboring

Info

Publication number
NO20082723L
NO20082723L NO20082723A NO20082723A NO20082723L NO 20082723 L NO20082723 L NO 20082723L NO 20082723 A NO20082723 A NO 20082723A NO 20082723 A NO20082723 A NO 20082723A NO 20082723 L NO20082723 L NO 20082723L
Authority
NO
Norway
Prior art keywords
drilling
density
riser
fluid
sludge
Prior art date
Application number
NO20082723A
Other languages
English (en)
Inventor
De Boer Luc
Original Assignee
De Boer Luc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38778960&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20082723(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by De Boer Luc filed Critical De Boer Luc
Publication of NO20082723L publication Critical patent/NO20082723L/no

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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/001—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
    • E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/106—Valve arrangements outside the borehole, e.g. kelly valves
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
    • E21B21/082—Dual gradient systems, i.e. using two hydrostatic gradients or drilling fluid densities

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)

Abstract

En fremgangsmåte og system for å regulere boreslamdensitet i boreoperasjoner. Slammet påkrevd ved brønnhodet kombineres med et basisfluid av forskjellig densitet for å produsere fortynnet slam i stigerøret. Ved å kombinere de passende mengdene av boreslam med basisfluid, kan stigerørsslamdensitet ved eller i nærheten av densiteten for sjøvann oppnås, for derved å tillate større kontroll på trykket i brønnhullet og forskjellige stigerør. Utblåsningsforhindrere kan også anvendes i kombinasjon med prosessen for å regulere disse trykkene. Konsentriske stigerør er vist, hvori et ringrom definert innenfor et stigerør benyttes for å frakte basisfluid med forskjellig densitet til injeksjonspunkter for injeksjon inn i boreslammet, mens et ringrom definert innenfor et annet stigerør benyttes for å frakte kombinasjonsfluidet og kaks tilbake til boreriggen. Kaksen separeres på den vanlige måten ved overflaten. Det fortynnede slammet passeres gjennom et sentrifugesystem for å separere boreslammet fra basisfluid med forskjellig densitet. Sentrifugesystemet kan også benyttes for å separere det gjenvunnede borefluidet til en hovedsakelig barytt-del og en hovedsakelig borefluiddel, hvori de to delene lagres lokalt på riggen og resirkuleres under boreoperasjoner.
NO20082723A 2005-11-21 2008-06-19 Fremgangsmate for a variere densiteten i borefluider ved anvendelser for dypt vanns olje- og gassboring NO20082723L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/284,334 US7992655B2 (en) 2001-02-15 2005-11-21 Dual gradient drilling method and apparatus with multiple concentric drill tubes and blowout preventers
PCT/US2006/045379 WO2007139581A1 (en) 2005-11-21 2006-11-21 Method for varying the density of drilling fluids in deep water oil and gas drilling applications

Publications (1)

Publication Number Publication Date
NO20082723L true NO20082723L (no) 2008-08-21

Family

ID=38778960

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20082723A NO20082723L (no) 2005-11-21 2008-06-19 Fremgangsmate for a variere densiteten i borefluider ved anvendelser for dypt vanns olje- og gassboring

Country Status (6)

Country Link
US (3) US7992655B2 (no)
EP (1) EP1957744A4 (no)
BR (1) BRPI0618878A2 (no)
CA (1) CA2630576C (no)
NO (1) NO20082723L (no)
WO (1) WO2007139581A1 (no)

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Also Published As

Publication number Publication date
WO2007139581A1 (en) 2007-12-06
US7992654B2 (en) 2011-08-09
US20080302569A1 (en) 2008-12-11
US20060070772A1 (en) 2006-04-06
CA2630576C (en) 2012-07-17
EP1957744A4 (en) 2014-08-13
US7762357B2 (en) 2010-07-27
EP1957744A1 (en) 2008-08-20
BRPI0618878A2 (pt) 2018-10-23
US20080302570A1 (en) 2008-12-11
US7992655B2 (en) 2011-08-09
CA2630576A1 (en) 2007-12-06

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