WO2003022464A2 - Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud - Google Patents

Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud Download PDF

Info

Publication number
WO2003022464A2
WO2003022464A2 PCT/DK2002/000575 DK0200575W WO03022464A2 WO 2003022464 A2 WO2003022464 A2 WO 2003022464A2 DK 0200575 W DK0200575 W DK 0200575W WO 03022464 A2 WO03022464 A2 WO 03022464A2
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning
equipment
tank
tank space
pipe
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.)
Ceased
Application number
PCT/DK2002/000575
Other languages
French (fr)
Other versions
WO2003022464A3 (en
Inventor
Henrik Falster-Hansen
Ib René Vinther ELGAARD
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.)
GUNCLEAN TOFTEJORG AB
Original Assignee
GUNCLEAN TOFTEJORG AB
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 GUNCLEAN TOFTEJORG AB filed Critical GUNCLEAN TOFTEJORG AB
Priority to AU2002336914A priority Critical patent/AU2002336914A1/en
Priority to DK02772081T priority patent/DK1436099T3/en
Priority to EP02772081A priority patent/EP1436099B1/en
Priority to US10/488,829 priority patent/US7507298B2/en
Priority to DE60230303T priority patent/DE60230303D1/en
Publication of WO2003022464A2 publication Critical patent/WO2003022464A2/en
Anticipated expiration legal-status Critical
Publication of WO2003022464A3 publication Critical patent/WO2003022464A3/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B57/00—Tank or cargo hold cleaning specially adapted for vessels
    • B63B57/02—Tank or cargo hold cleaning specially adapted for vessels by washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0933—Removing sludge or the like from tank bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets

Definitions

  • the invention relates to cleaning equipment for the cleaning of a tank space by means of pipe lowered into the tank space with cleaning equipment comprising a revolving cleaning head with rotating nozzles, and from which cleaning medium is discharged, as well as use of the equipment.
  • Cleaning equipment of this type is used in particular for the cleaning of various forms of tank spaces for use in process technology, the food industry as well as storage tanks.
  • Cleaning takes place by means of flushing from rotating and revolving nozzles so that the entire internal surface of the tank space is flushed. Material settled on the tank wall and the cleaning medium must subsequently be pumped out and collected. This cleaning medium with suspended material is frequently a problem, since it must be stored for subsequent cleaning in order to avoid pollution. To this should be added that this cleaning proc- ess must be supplied with an uninterrupted flow of cleaning medium, which requires a considerable amount of cleaning liquid.
  • the object of the invention is to remedy these drawbacks and defects, and this is achieved according to the invention by cleaning equipment, where the cleaning equipment additionally comprises a suction pipe extending from the bottom of the tank space and out of the tank space, said suction pipe being connected with the suction side of a pump, while the delivery side of the pump is connected with the nozzles of the cleaning head.
  • Cleaning of tank spaces may be carried out in this surprisingly simple manner by recirculating the cleaning medium.
  • the amount of cleaning medium is limited, and the problem of discharging polluted medium is effectively remedied, since the cleaning medium may be re-used.
  • the cleaning medium may be re-used several times.
  • the equipment is constructed such that it may be mounted in one and the same hole in the tank, the installation is very compact, and the mounting is therefore simpler and less expensive.
  • the suction pipe is constructed such that it may be adjusted in height from the outside, the same equipment may be adapted to various tank dimensions.
  • the cleaning medium When, as stated in claim 4, the cleaning medium is recirculated, it may be used in locations where a limited amount of cleaning medium is available, and where discharge of polluted cleaning medium is not allowed.
  • the drawing shows an example of a preferred embodiment of the equipment according to the invention.
  • the tank in which the equipment is mounted is indicated with an upper and lower tank wall 1.
  • the top of the tank is formed with a hole at which a flange 2 is mounted.
  • a cover 3 is secured to this flange 2. Where the equipment is not mounted, the cover is a so-called closed cover, which is fixedly bolted in a generally known manner.
  • the cover When the cleaning equipment is to be mounted, the cover is removed, and the cover 3 shown in the drawing is mounted, through which a cleaning pipe 4 as well as a suction pipe 20 may be passed.
  • the cleaning pipe 4 is normally welded to the cover 3, protruding a distance above the cover and such that a drive means (not shown) for a coupling member 6 may be mounted
  • a supply stub 12 for the supply of cleaning medium under pressure is provided.
  • a valve 13 controls the supply of this medium.
  • the cleaning pipe 4 internally mounts a drive shaft which, via the drive equipment, can revolve the cleaning head 7 mounted at the end such that the cleaning head revolves as indicated by an arrow 8.
  • the cleaning head 7 is moreover provided with rotating nozzles 9 which rotate in the direction of the arrow 11 during cleaning at the same time as the cleaning head revolves.
  • the cleaning medium is fed to the pipe 4 and is discharged through the nozzles 9 to form the cleaning jets 10.
  • the cleaning head revolves while the nozzles rotate, which results in a great cleaning effect and provides the certainty that all internal faces are swept uniformly by the cleaning medium.
  • a suction pipe 20 is passed through the cover and is mounted with a longitudinal key 21 secured at the side and extending in a keyway 22 in the cover 3.
  • a plurality of guides 19 for the suction pipe 20 are secured on the cleaning pipe 4.
  • a raising/lowering system e.g. in the form of a spindle 24 is mounted such that the suction pipe 20 may be displaced relative to the cover and thereby relative to the tank space.
  • This height adjustability is to adjust the suction end of the suction pipe 20 relative to the bottom of the tank.
  • a bellows member 17 may be mounted for accommodating any movement in the longitudinal direction, just as a hopper 16 with inlet holes 15 on the circumference is mounted.
  • the suction pipe 20 protrudes a distance above the cover 3 and is provided with a hose coupling member 23 at the end.
  • a suction hose may be connected to a pump 14, said pump being connected with the cleaning pipe 4 at the delivery side, so that cleaning medium may be discharged via the nozzles 9 into the tank space.
  • the cleaning medium will be recirculated in a completely closed circuit during the cleaning.
  • a filter arrangement (not shown) may be inserted in a generally known manner between the suction side and the delivery side so that at least a coarse filtration takes place.
  • the same cleaning medium may be re-used, thereby obvi-ating the need for a constant supply of fresh cleaning medium and also the need for collection/discharge of used and dirty cleaning medium.
  • This drilling mud consists of clay and specially developed chemicals which are mixed with water and/or oil.
  • It is used for lubricating the movable parts of the drill head and for flushing the loosened subsoil material away from the drill head. It moreover forms a sealing layer between the drill and the drill pipe when it is pumped in the drill pipe.
  • the drilling mud may advantageously be deposited in a tank in which equipment corresponding to the cleaning equipment described above is mounted.
  • drilling mud ready for use may be sucked out via the suction pipe, and may then be pumped down into the drill pipe, the drill string.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

By constructing tank cleaning equipment according to the invention such that it comprises a cleaning jetting part (7, 9) as well as a suction part (4), the equipment can work with the same cleaning medium which is recirculated. This saves supply of fresh cleaning medium, and since used medium is thus not discharged, it is not necessary to establish deposit facilities to avoid pollution. Furthermore, this equipment according to the invention may advantageously be used for keeping so-called drilling mud in a mixed and thus ready-to-use state, even when left to stand for an extended period of time in a tank. The nozzle jets (10) thus keep the mud in the tank in a constantly mixed state, and the mud can therefore be sucked through the suction pipe (20) for pumping in the drill pipe, it being ensured that the mud is homogeneous and has a suitable viscosity.

Description

CLEANING EQUIPMENT AND USE THEREOF
State of the art
The invention relates to cleaning equipment for the cleaning of a tank space by means of pipe lowered into the tank space with cleaning equipment comprising a revolving cleaning head with rotating nozzles, and from which cleaning medium is discharged, as well as use of the equipment.
Cleaning equipment of this type is used in particular for the cleaning of various forms of tank spaces for use in process technology, the food industry as well as storage tanks.
Cleaning takes place by means of flushing from rotating and revolving nozzles so that the entire internal surface of the tank space is flushed. Material settled on the tank wall and the cleaning medium must subsequently be pumped out and collected. This cleaning medium with suspended material is frequently a problem, since it must be stored for subsequent cleaning in order to avoid pollution. To this should be added that this cleaning proc- ess must be supplied with an uninterrupted flow of cleaning medium, which requires a considerable amount of cleaning liquid.
This is a drawback where limited amounts of cleaning medium are available, such as on drilling platforms and similar locations, just as it requires a sufficient tank capacity for the storage of the cleaning medium pumped out.
Object of the invention
The object of the invention is to remedy these drawbacks and defects, and this is achieved according to the invention by cleaning equipment, where the cleaning equipment additionally comprises a suction pipe extending from the bottom of the tank space and out of the tank space, said suction pipe being connected with the suction side of a pump, while the delivery side of the pump is connected with the nozzles of the cleaning head.
Cleaning of tank spaces may be carried out in this surprisingly simple manner by recirculating the cleaning medium. In this manner, the amount of cleaning medium is limited, and the problem of discharging polluted medium is effectively remedied, since the cleaning medium may be re-used.
If the cleaning medium is cleaned, e.g. in that coarse particles are filtered off in a filter, the cleaning medium may be re-used several times.
When, as stated in claim 2, the equipment is constructed such that it may be mounted in one and the same hole in the tank, the installation is very compact, and the mounting is therefore simpler and less expensive.
When, as stated in claim 3, the suction pipe is constructed such that it may be adjusted in height from the outside, the same equipment may be adapted to various tank dimensions.
When, as stated in claim 4, the cleaning medium is recirculated, it may be used in locations where a limited amount of cleaning medium is available, and where discharge of polluted cleaning medium is not allowed.
Finally, it is expedient, as stated in claim 5, to use the equipment to ensure a homogeneous and fluid drilling mud which is used for lubrication and pressure seal-off around the drill in the drill pipe.
The drawing
An example of an embodiment of the equipment according to the invention will be described more fully below with reference to the drawing, which shows a section through a tank with the equipment mounted.
Description of the example of an embodiment
The drawing shows an example of a preferred embodiment of the equipment according to the invention.
The tank in which the equipment is mounted is indicated with an upper and lower tank wall 1.
The top of the tank is formed with a hole at which a flange 2 is mounted.
A cover 3 is secured to this flange 2. Where the equipment is not mounted, the cover is a so-called closed cover, which is fixedly bolted in a generally known manner.
When the cleaning equipment is to be mounted, the cover is removed, and the cover 3 shown in the drawing is mounted, through which a cleaning pipe 4 as well as a suction pipe 20 may be passed.
The cleaning pipe 4 is normally welded to the cover 3, protruding a distance above the cover and such that a drive means (not shown) for a coupling member 6 may be mounted
Furthermore, a supply stub 12 for the supply of cleaning medium under pressure is provided.
A valve 13 controls the supply of this medium.
The cleaning pipe 4 internally mounts a drive shaft which, via the drive equipment, can revolve the cleaning head 7 mounted at the end such that the cleaning head revolves as indicated by an arrow 8.
The cleaning head 7 is moreover provided with rotating nozzles 9 which rotate in the direction of the arrow 11 during cleaning at the same time as the cleaning head revolves.
The cleaning medium is fed to the pipe 4 and is discharged through the nozzles 9 to form the cleaning jets 10.
When cleaning takes place, the cleaning head revolves while the nozzles rotate, which results in a great cleaning effect and provides the certainty that all internal faces are swept uniformly by the cleaning medium.
Also a suction pipe 20 is passed through the cover and is mounted with a longitudinal key 21 secured at the side and extending in a keyway 22 in the cover 3. In addition, a plurality of guides 19 for the suction pipe 20 are secured on the cleaning pipe 4.
A raising/lowering system e.g. in the form of a spindle 24 is mounted such that the suction pipe 20 may be displaced relative to the cover and thereby relative to the tank space.
The purpose of this height adjustability is to adjust the suction end of the suction pipe 20 relative to the bottom of the tank.
As indicated in the drawing, a bellows member 17 may be mounted for accommodating any movement in the longitudinal direction, just as a hopper 16 with inlet holes 15 on the circumference is mounted.
The suction pipe 20 protrudes a distance above the cover 3 and is provided with a hose coupling member 23 at the end.
By means of this, a suction hose may be connected to a pump 14, said pump being connected with the cleaning pipe 4 at the delivery side, so that cleaning medium may be discharged via the nozzles 9 into the tank space.
The cleaning medium will be recirculated in a completely closed circuit during the cleaning.
As needed, a filter arrangement (not shown) may be inserted in a generally known manner between the suction side and the delivery side so that at least a coarse filtration takes place.
In this manner, the same cleaning medium may be re-used, thereby obvi- ating the need for a constant supply of fresh cleaning medium and also the need for collection/discharge of used and dirty cleaning medium.
Moreover, it has been found that the equipment is extremely suitable for use in tanks in which so-called drilling mud is stored.
This drilling mud consists of clay and specially developed chemicals which are mixed with water and/or oil.
It is used for lubricating the movable parts of the drill head and for flushing the loosened subsoil material away from the drill head. It moreover forms a sealing layer between the drill and the drill pipe when it is pumped in the drill pipe.
The problem of this drilling mud is that at standstill it tends to disintegrate into components where the heavy parts will precipitate. The drilling mud cannot be used in this state, as it functions only when it is in a homoge- neous state.
It has surprisingly been found that the drilling mud may advantageously be deposited in a tank in which equipment corresponding to the cleaning equipment described above is mounted.
In this use, mixing water/oil must be supplied to the cleaning equipment, which will keep the drilling mud suitably mixed and conditioned by its nozzle movement. At the same time, drilling mud ready for use may be sucked out via the suction pipe, and may then be pumped down into the drill pipe, the drill string.
This saves a considerable amount of work, as the mixed drilling mud, which is left to stand for an extended period of time, may be kept mixed and ready for use.

Claims

PATENT CLAIMS
1. Cleaning equipment for the cleaning of a tank space by means of a pipe lowered into the tank space with cleaning equipment comprising a revolving cleaning head with rotatable nozzles, and from which cleaning medium is discharged, characterized in that the cleaning equipment additionally comprises a suction pipe (20) extending from the bottom of the tank space and out of the tank space, said cleaning pipe (20) being connected with the suction side of a pump (14), while the delivery side of the pump is connected with the nozzles (9) of the cleaning head (7).
2. Cleaning equipment according to claim ^characterized in that both the suction pipe (20) and the lowered pipe (4) of the cleaning equipment extend through the same opening in the tank wall (1 ).
3. Cleaning equipment according to claims 1 and 2, characterized in that the suction pipe (20) is provided with means (24) for height adjustment (18) of the inlets (15, 16) of the suction pipe (20) into the tank space.
4. Use of the cleaning equipment defined in claims 1-3, c h a ra cte r- i z e d in that it is used for the cleaning of a tank space by recirculation of the cleaning medium (10, 11) in a closed system.
5. Use of the equipment defined in claims 1-3, characterized in that it is used for the preparation (conditioning) of drilling mud for use in drill pipes in the extraction of oil/gas, where the drilling mud is discharged from the delivery side of the pump (14), while the cleaning equipment receives liquid (10) which, via the nozzles (9), keeps the mud mixture mixed.
PCT/DK2002/000575 2001-09-07 2002-09-05 Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud Ceased WO2003022464A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2002336914A AU2002336914A1 (en) 2001-09-07 2002-09-05 Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud
DK02772081T DK1436099T3 (en) 2001-09-07 2002-09-05 Equipment and use of the equipment for cleaning a tank space or manufacturing drilling mud
EP02772081A EP1436099B1 (en) 2001-09-07 2002-09-05 Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud
US10/488,829 US7507298B2 (en) 2001-09-07 2002-09-05 Cleaning equipment and use thereof
DE60230303T DE60230303D1 (en) 2001-09-07 2002-09-05 DEVICE AND USE OF THE DEVICE FOR CLEANING A TANK ROOM OR PRODUCING DRILLING RINSING

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200101319 2001-09-07
DKPA200101319 2001-09-07

Publications (2)

Publication Number Publication Date
WO2003022464A2 true WO2003022464A2 (en) 2003-03-20
WO2003022464A3 WO2003022464A3 (en) 2004-03-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2002/000575 Ceased WO2003022464A2 (en) 2001-09-07 2002-09-05 Equipment and use of the equipment for cleaning a tank space or preparation of drilling mud

Country Status (7)

Country Link
US (1) US7507298B2 (en)
EP (1) EP1436099B1 (en)
AT (1) ATE416853T1 (en)
AU (1) AU2002336914A1 (en)
DE (1) DE60230303D1 (en)
DK (1) DK1436099T3 (en)
WO (1) WO2003022464A2 (en)

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WO2003106058A3 (en) * 2002-06-18 2004-04-29 Awazel Waterproofing Company EXTRACTION METHODS AND APPARATUS
EP1684922A4 (en) * 2003-11-20 2008-12-24 David B Gregory Cleaning system and method of use
CN101948003A (en) * 2010-09-14 2011-01-19 南京信息工程大学 Fully automatic tank washing machine
WO2014112906A1 (en) * 2013-01-18 2014-07-24 Scanjet Marine Ab Support device for a machine or equipment in closed spaces.
CN103357336A (en) * 2013-07-24 2013-10-23 浙江工业大学 Sealed mixing tank wall washing device
CN103357337A (en) * 2013-07-24 2013-10-23 浙江工业大学 Mixer with rotatable nozzle
FR3013616A1 (en) * 2013-11-26 2015-05-29 Dubes Gestion Conseils Vins METHOD FOR SIMULTANEOUS CLEANING AND SEPARATING OF BARRIERS
GB2542209A (en) * 2015-09-14 2017-03-15 Hydro Int Plc A nozzle for a vacuum pump or truck
US20170072439A1 (en) * 2015-09-14 2017-03-16 Hydro International Plc Nozzle for a Vacuum Pump or Truck
CN109013608A (en) * 2018-08-30 2018-12-18 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 A kind of arch oil storage tank deposit remove device
CN112517574A (en) * 2021-02-17 2021-03-19 山东千润智能科技有限公司 Multifunctional oil field solid control tank mechanical cleaning device

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US7507298B2 (en) 2009-03-24
WO2003022464A3 (en) 2004-03-25
DK1436099T3 (en) 2009-03-23
EP1436099B1 (en) 2008-12-10
ATE416853T1 (en) 2008-12-15
DE60230303D1 (en) 2009-01-22
US20040238009A1 (en) 2004-12-02
AU2002336914A1 (en) 2003-03-24
EP1436099A2 (en) 2004-07-14

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