WO2008088226A1 - Collecteur de boue de forage pour un joint coulissant d'une colonne montante - Google Patents

Collecteur de boue de forage pour un joint coulissant d'une colonne montante Download PDF

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Publication number
WO2008088226A1
WO2008088226A1 PCT/NO2008/000010 NO2008000010W WO2008088226A1 WO 2008088226 A1 WO2008088226 A1 WO 2008088226A1 NO 2008000010 W NO2008000010 W NO 2008000010W WO 2008088226 A1 WO2008088226 A1 WO 2008088226A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
drilling mud
collector
inner pipe
slip joint
Prior art date
Application number
PCT/NO2008/000010
Other languages
English (en)
Inventor
Ola Blakseth
Frode Johnsen
Original Assignee
Blafro Tools 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 Blafro Tools As filed Critical Blafro Tools As
Priority to GB0913807A priority Critical patent/GB2458857B/en
Publication of WO2008088226A1 publication Critical patent/WO2008088226A1/fr

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
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/08—Wipers; Oil savers
    • E21B33/085—Rotatable packing means, e.g. rotating blow-out preventers

Definitions

  • This invention concerns a drilling mud collector. More particularly, it concerns a drilling mud collector for a slip joint of a riser, the slip joint comprising an outer pipe and an inner pipe and also at least one first seal between the inner pipe and the outer pipe. A second seal encloses the inner pipe. Between the seals there is provided a collector compartment communicating with receiving equipment for drilling mud.
  • a build-up of relatively dry drilling mud may occur in the annulus between the inner and outer pipes of the slip joint.
  • oil-based drilling mud With replacing oil-based drilling mud with water-based drilling mud, at least a portion of said relatively dry drilling mud remains in the annulus.
  • this oil-based drilling mud By allowing this oil-based drilling mud to contact the water- based drilling mud, the consistency of the oil-based drilling mud is changed.
  • the oil-based drilling mud adheres to the inner pipe and lumps may also form, potentially causing sudden discharge of drilling mud to the environment when the inner pipe is displaced in the seal .
  • the object of the invention is to remedy or reduce at least one of the disadvantages of the prior art.
  • a drilling mud collector for a slip joint of a riser comprising an outer pipe and an inner pipe and also at least one first seal between the inner pipe and the outer pipe, characterized in that a second seal encloses the inner pipe, and wherein a collector compartment is provided between the seals.
  • the collector compartment communicates with receiving equipment for drilling mud.
  • the second seal is located at an upper portion of the first seal. Drilling mud unintentionally discharging via the first seal may be caught by the collector compartment and the second seal .
  • the collector compartment is provided with a first level switch at a first level and advantageously also with a second level switch at a second level located higher up than the first level.
  • the receiving equipment comprises a drilling mud collector tank, a pump and necessary valves.
  • the liquid discharging via the first seal is allowed to collect in a separate receptacle so as to be able 5 to determine the type of liquid discharged.
  • the second seal is inactive in the initial position thereof. Should drilling mud, or possibly other liquids, discharge via the first seal, the liquid level rises within the collector compartment.
  • at leasto one of the level switches is arranged in a manner allowing at least activation of the second seal, starting of the pump or activation of a warning.
  • the second level switch is arranged to output a signal which, via the control, activatess the second seal so as to seal around the inner pipe, starts the pump so as to pump fluid in the collector compartment to the collector tank, and also that the control activates a warning to the effect that an unintentional leakage is ongoing .
  • the first packer of the first seal may be tightened in order to stop the leakage. If required, also the second packer of the first seal must be activated.
  • the liquid level drops below the first level switch, whereby the first level switch, via the5 control, at least stops the pump, deactivates the second seal or discontinues the warning.
  • a device in accordance with the invention protects against unintentional discharge of drilling mud to the environment, which implies a significant reduction in pollution danger ando also in loss of relatively costly drilling mud.
  • FIG. 1 an example of a preferred embodiment is described, the embodiment of which is depicted in the accompanying drawings , where :
  • Fig. 1 schematically shows a drilling mud collector according to the invention in the initial position thereof
  • Fig. 2 shows the drilling mud collector of fig. 1 in the activated position thereof.
  • reference numeral 1 denotes a drilling mud collector connected to a slip joint 2 of a riser 4.
  • the slip joint 2 comprises an outer pipe 6 connected to the riser 4, an inner pipe 8 connected to an upper riser arrangement known per se (not shown) , and a first seal 10.
  • the first seal 10 comprises a first seal housing 12 sealingly connected to the upper end portion of the outer pipe 6, the seal housing surrounding the inner pipe 8.
  • the seal 10 further comprises an upper first packer 14 and a lower second packer 16, wherein the packers 14 and 16 are arranged in a manner allowing them to bear sealingly against the inner pipe 8.
  • the bearing pressure of the first packer 14 against the inner pipe 8 is controlled by regulating the air pressure in a first control pipe 18, whereas the bearing pressure of the second packer 16 against the inner pipe 8 is controlled by regulating the air pressure in a second control pipe 20. Upon experiencing insufficient overpressure in the control pipes 18, 20, the packers 14, 16 will not seal against the inner pipe 8.
  • the first packer 14 is activated, whereas the second packer 16 forms an auxiliary packer should the first packer 14 fail.
  • the outer pipe 6 with the first seal 10 and also the riser 4 are supported by a support ring 22 in a manner known per se.
  • a second seal 24 comprises a second seal housing 26 connected concentrically and sealingly to an upper portion of the first seal housing 12.
  • the second seal housing 26 is provided with a third packer 28 arranged in a manner allowing it to seal, when in the activated position thereof, against the inner pipe 8.
  • the third packer 28 is activated by opening a compressed-air valve 30 for supply of compressed air.
  • a collector compartment 32 that surrounds the inner pipe 8, and which is arranged in a manner allowing it to receive and collect fluid discharging between the first seal 10 and the inner pipe 8.
  • first level switch 34 In the collector compartment 32 there is provided a first level switch 34 and a second level switch 36 located at a level higher up than the first level switch 34.
  • the level switches 34, 36 communicate with a control 38 via wires 40.
  • the control 38 controls the compressed-air valve 30 via a wire 42 and a pump 44 and also a warning (not shown) via connections (not shown) .
  • the collector compartment 32 communicates with a drilling mud collector tank 50 via a pipe connection 46, valves 48 and the pump 44.
  • the second level switch 36 outputs a signal to the control 38, which activates the third packer 28 by opening the compressed-air valve 30 simultaneous with starting the pump 44 and outputting a warning.
  • the third packer 28 is arranged in a manner allowing it also to withstand the pressure from the drilling mud while the pump is pumping the discharging drilling mud onwards to the collector tank 50.
  • the pipe connection 46, the valves 48, the pump 44 and the collector tank 50 form components in receiving equipment 52 for drilling mud.
  • the level in the collector compartment 32 will drop ' to below the first level switch 34.
  • the first level switch 34 outputs a signal to the control 38, which stops the pump 44 and controls the compressed-air valve 30 to vent the third packer 28 and thus to deactivate it.
  • the collector tank 50 may be drained to a drilling mud facility (not shown) via a drainage pipe 54.

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

L'invention porte sur un collecteur (1) de boue de forage pour un joint coulissant (2) d'une colonne montante (4), le joint coulissant (2) comprenant un tuyau externe (6) et un tuyau interne (8) et également au moins un premier joint d'étanchéité (10) entre le tuyau interne (8) et le tuyau externe (6), un second joint (24) enfermant le tuyau interne (8) et un compartiment de collecteur (32) étant disposé entre les joints d'étanchéité (10, 24).
PCT/NO2008/000010 2007-01-15 2008-01-10 Collecteur de boue de forage pour un joint coulissant d'une colonne montante WO2008088226A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0913807A GB2458857B (en) 2007-01-15 2008-01-10 Drilling mud collector for a slip joint of a riser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20070222 2007-01-15
NO20070222A NO325940B1 (no) 2007-01-15 2007-01-15 Anordning ved oppsamler for boreslam

Publications (1)

Publication Number Publication Date
WO2008088226A1 true WO2008088226A1 (fr) 2008-07-24

Family

ID=39636163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2008/000010 WO2008088226A1 (fr) 2007-01-15 2008-01-10 Collecteur de boue de forage pour un joint coulissant d'une colonne montante

Country Status (3)

Country Link
GB (1) GB2458857B (fr)
NO (1) NO325940B1 (fr)
WO (1) WO2008088226A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013019407A3 (fr) * 2011-07-30 2013-03-28 Halliburton Energy Services, Inc. Traversée d'un joint de parcours avec une ligne de fluide
WO2016159980A1 (fr) 2015-03-31 2016-10-06 Noble Drilling Services Inc. Procédé et système de lubrification de joint coulissant de colonne montante et confinement de fuite de joint d'étanchéité
US10689933B2 (en) 2016-01-05 2020-06-23 Noble Drilling Services Inc. Pressure assisted motor operated ram actuator for well pressure control device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2524756B (en) * 2014-03-31 2018-11-21 Romar International Ltd Method and system for controlling slip joint packer activation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068665A (en) * 1936-01-28 1937-01-26 Douglass Stephen Detachable mud collector for drill pipes
US2214428A (en) * 1939-04-15 1940-09-10 William J Miller Mud box
US2610690A (en) * 1950-08-10 1952-09-16 Guy M Beatty Mud box
US4367981A (en) * 1981-06-29 1983-01-11 Combustion Engineering, Inc. Fluid pressure-tensioned slip joint for drilling riser
WO1990005236A1 (fr) * 1988-11-09 1990-05-17 Smedvig Ipr A/S Procede et dispositif de compensation de mouvement dans des colonnes montantes
WO1997043516A1 (fr) * 1996-05-13 1997-11-20 Maritime Hydraulics A/S Joint coulissant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411434A (en) * 1982-05-24 1983-10-25 Hydril Company Fluid sealing assembly for a marine riser telescopic slip joint
US5295536A (en) * 1992-11-23 1994-03-22 Bode Robert E Drilling mud container apparatus
US6474418B2 (en) * 2000-12-07 2002-11-05 Frank's International, Inc. Wellbore fluid recovery system and method
US6837314B2 (en) * 2002-03-18 2005-01-04 Baker Hughes Incoporated Sub apparatus with exchangeable modules and associated method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2068665A (en) * 1936-01-28 1937-01-26 Douglass Stephen Detachable mud collector for drill pipes
US2214428A (en) * 1939-04-15 1940-09-10 William J Miller Mud box
US2610690A (en) * 1950-08-10 1952-09-16 Guy M Beatty Mud box
US4367981A (en) * 1981-06-29 1983-01-11 Combustion Engineering, Inc. Fluid pressure-tensioned slip joint for drilling riser
WO1990005236A1 (fr) * 1988-11-09 1990-05-17 Smedvig Ipr A/S Procede et dispositif de compensation de mouvement dans des colonnes montantes
WO1997043516A1 (fr) * 1996-05-13 1997-11-20 Maritime Hydraulics A/S Joint coulissant

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013019407A3 (fr) * 2011-07-30 2013-03-28 Halliburton Energy Services, Inc. Traversée d'un joint de parcours avec une ligne de fluide
US8915304B2 (en) 2011-07-30 2014-12-23 Halliburton Energy Services, Inc. Traversing a travel joint with a fluid line
WO2016159980A1 (fr) 2015-03-31 2016-10-06 Noble Drilling Services Inc. Procédé et système de lubrification de joint coulissant de colonne montante et confinement de fuite de joint d'étanchéité
EP3277906A4 (fr) * 2015-03-31 2018-12-05 Noble Drilling Services, Inc. Procédé et système de lubrification de joint coulissant de colonne montante et confinement de fuite de joint d'étanchéité
AU2015390010B2 (en) * 2015-03-31 2018-12-06 Noble Drilling Services Inc. Method and system for lubricating riser slip joint and containing seal leakage
US10196865B2 (en) 2015-03-31 2019-02-05 Noble Drilling Services Inc. Method and system for lubricating riser slip joint and containing seal leakage
EP3699392A1 (fr) * 2015-03-31 2020-08-26 Noble Drilling Services, Inc. Procédé et système de lubrification de joint coulissant de colonne montante et confinement de fuite de joint d'étanchéité
US10689933B2 (en) 2016-01-05 2020-06-23 Noble Drilling Services Inc. Pressure assisted motor operated ram actuator for well pressure control device

Also Published As

Publication number Publication date
GB2458857B (en) 2011-07-13
GB2458857A (en) 2009-10-07
NO20070222L (no) 2008-07-16
NO325940B1 (no) 2008-08-18
GB0913807D0 (en) 2009-09-16

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