GB1132687A - Method and apparatus for lightening the load on a subsea conductor pipe - Google Patents

Method and apparatus for lightening the load on a subsea conductor pipe

Info

Publication number
GB1132687A
GB1132687A GB26063/67A GB2606367A GB1132687A GB 1132687 A GB1132687 A GB 1132687A GB 26063/67 A GB26063/67 A GB 26063/67A GB 2606367 A GB2606367 A GB 2606367A GB 1132687 A GB1132687 A GB 1132687A
Authority
GB
United Kingdom
Prior art keywords
conductor
mud
lightening
load
june
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.)
Expired
Application number
GB26063/67A
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.)
ExxonMobil Oil Corp
Original Assignee
Mobil Oil Corp
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 Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of GB1132687A publication Critical patent/GB1132687A/en
Expired legal-status Critical Current

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

1,132,687. Boring earth &c. MOBIL OIL CORP. 6 June, 1967 [6 June, 1966], No. 26063/67. Heading E1F. Structural failure of a marine conductor 10 is prevented by injecting gas into the returning drilling mud within the conductor to lighten the effective weight of the mud. The gas, which is air or combustion gas according to whether the mud is aqueous or oil-based, is supplied to the conductor interior through manifolds 42. After discharge from the conductor the mud is treated in a cyclone 58 before reception in a mud tank 60. The conductor which is supported by guylines 30 has a universal joint 24, a slip joint 26, and a bouyancy tank (not shown).
GB26063/67A 1966-06-06 1967-06-06 Method and apparatus for lightening the load on a subsea conductor pipe Expired GB1132687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55530566A 1966-06-06 1966-06-06

Publications (1)

Publication Number Publication Date
GB1132687A true GB1132687A (en) 1968-11-06

Family

ID=24216760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26063/67A Expired GB1132687A (en) 1966-06-06 1967-06-06 Method and apparatus for lightening the load on a subsea conductor pipe

Country Status (2)

Country Link
US (1) US3434550A (en)
GB (1) GB1132687A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571873B2 (en) 2001-02-23 2003-06-03 Exxonmobil Upstream Research Company Method for controlling bottom-hole pressure during dual-gradient drilling
US6802379B2 (en) 2001-02-23 2004-10-12 Exxonmobil Upstream Research Company Liquid lift method for drilling risers
US7972555B2 (en) 2004-06-17 2011-07-05 Exxonmobil Upstream Research Company Method for fabricating compressible objects for a variable density drilling mud
US8076269B2 (en) 2004-06-17 2011-12-13 Exxonmobil Upstream Research Company Compressible objects combined with a drilling fluid to form a variable density drilling mud
US8088717B2 (en) 2004-06-17 2012-01-03 Exxonmobil Upstream Research Company Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud
US8088716B2 (en) 2004-06-17 2012-01-03 Exxonmobil Upstream Research Company Compressible objects having a predetermined internal pressure combined with a drilling fluid to form a variable density drilling mud

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579872A (en) * 1968-11-05 1971-05-25 Ocean Science & Eng Dredging apparatus with surge compensating means
US3603409A (en) * 1969-03-27 1971-09-07 Regan Forge & Eng Co Method and apparatus for balancing subsea internal and external well pressures
US3815673A (en) * 1972-02-16 1974-06-11 Exxon Production Research Co Method and apparatus for controlling hydrostatic pressure gradient in offshore drilling operations
US3811322A (en) * 1972-09-25 1974-05-21 Offshore Co Method and apparatus for monitoring return mud flow
US4099583A (en) * 1977-04-11 1978-07-11 Exxon Production Research Company Gas lift system for marine drilling riser
US4220207A (en) * 1978-10-31 1980-09-02 Standard Oil Company (Indiana) Seafloor diverter
US4210208A (en) * 1978-12-04 1980-07-01 Sedco, Inc. Subsea choke and riser pressure equalization system
US4819730A (en) * 1987-07-24 1989-04-11 Schlumberger Technology Corporation Development drilling system
US6216799B1 (en) 1997-09-25 2001-04-17 Shell Offshore Inc. Subsea pumping system and method for deepwater drilling
US7093662B2 (en) * 2001-02-15 2006-08-22 Deboer Luc System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud
BR122017010168B1 (en) * 2005-10-20 2018-06-26 Transocean Sedco Forex Ventures Ltd. METHOD TO CONTROL PRESSURE AND / OR DENSITY OF A DRILLING FLUID
AU2008302141B2 (en) * 2007-09-21 2011-06-09 Transocean Sedco Forex Ventures Ltd. System and method for providing additional blowout preventer control redundancy
GB2457497B (en) 2008-02-15 2012-08-08 Pilot Drilling Control Ltd Flow stop valve
WO2011020979A1 (en) 2009-08-18 2011-02-24 Pilot Drilling Control Limited Flow stop valve
CN104374656B (en) * 2014-08-29 2017-01-18 天津大学 Submarine pipeline lateral moving loadtest device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24083E (en) * 1955-11-01 moneill
US1868400A (en) * 1929-09-17 1932-07-19 Fred N Stover Well digging apparatus
US2726063A (en) * 1952-05-10 1955-12-06 Exxon Research Engineering Co Method of drilling wells
US2808230A (en) * 1955-01-17 1957-10-01 Shell Oil Co Off-shore drilling
US2880965A (en) * 1955-07-07 1959-04-07 Phillips Petroleum Co Means and method of drilling with aerated drilling liquids
US2923531A (en) * 1956-04-26 1960-02-02 Shell Oil Co Drilling

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571873B2 (en) 2001-02-23 2003-06-03 Exxonmobil Upstream Research Company Method for controlling bottom-hole pressure during dual-gradient drilling
US6802379B2 (en) 2001-02-23 2004-10-12 Exxonmobil Upstream Research Company Liquid lift method for drilling risers
US7972555B2 (en) 2004-06-17 2011-07-05 Exxonmobil Upstream Research Company Method for fabricating compressible objects for a variable density drilling mud
US8076269B2 (en) 2004-06-17 2011-12-13 Exxonmobil Upstream Research Company Compressible objects combined with a drilling fluid to form a variable density drilling mud
US8088717B2 (en) 2004-06-17 2012-01-03 Exxonmobil Upstream Research Company Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud
US8088716B2 (en) 2004-06-17 2012-01-03 Exxonmobil Upstream Research Company Compressible objects having a predetermined internal pressure combined with a drilling fluid to form a variable density drilling mud

Also Published As

Publication number Publication date
US3434550A (en) 1969-03-25

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