EP1385644A1 - Equipment for external cleaning of tubes with fluid under pressure - Google Patents
Equipment for external cleaning of tubes with fluid under pressureInfo
- Publication number
- EP1385644A1 EP1385644A1 EP02731011A EP02731011A EP1385644A1 EP 1385644 A1 EP1385644 A1 EP 1385644A1 EP 02731011 A EP02731011 A EP 02731011A EP 02731011 A EP02731011 A EP 02731011A EP 1385644 A1 EP1385644 A1 EP 1385644A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- equipment
- coiled tubing
- tubes
- case
- decontamination
- 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.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 17
- 239000012530 fluid Substances 0.000 title claims description 8
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 238000005202 decontamination Methods 0.000 claims 7
- 230000003588 decontaminative effect Effects 0.000 claims 7
- 230000002285 radioactive effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- 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
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
Definitions
- the tubes have to be cleaned of deposits, possible radioactive, before winding on large drums.
- Coiled tubing is tube which is manufactured out of a strip of carbon steel which is formed into a tube and welded lengthwise.
- the tube is in large lengths (up to 6000 metres) wound on a drum. It is known to clean objects with the help of high pressure water. In general a spray lance is used to squirt water with a pressure of more than 100 bar on the object to be cleaned.
- the cleaning of coiled tubing tubes which are used in boreholes for oil or gas is difficult because the diameter of the tube is relative small and the fact that these tubes are hundreds of metres long. As a rule these tubes are polluted with light radioactive material. It is found that tubes which are cleaned in the convential way will be again become radioactive after some time. Examination showed that the tubes had micro cracks on the surface which contained dirt which remained after the cleaning.
- the invention concerns equipment which cleans the tubes intensive and can be fitted around the tube close to the borehole.
- the equipment consists of a case which is divided in length wherein adjustable guiding rollers lead the tube through a divided sprayhead.
- the sprayhead is foreseen with a number of spray nozzles which are connected to a high pressure pump.
- the case is foreseen with a connection with a vacuum pump.
- the nozzles in the sprayhead are placed with an angle to obtain a proper cleaning.
- the case is evacuated with a pump of great capacity. The halves of the case fit together without specific sealing.
- Fig. 1 shows a crossection in length over the case.
- Fig. 2 shows a crossection over the guiding rollers.
- Fig. 3 shows a crossection over the divided sprayhead.
- Fig. 1 is (1) the to be cleaned coiled tubing.
- Coiled tubing (1) is guided by double conical guiding rollers (2) which can be adjusted by adjustment (3) to the diameter of the coiled tubing.
- case (5) In the sidewall (4) of case (5) are half rings of synthetic material (6) fixed. Case (5) is divided in two over the length and connected to each other with hinges (7). Opposite hinges (7) are latches which are not drawn.
- At (8) is a connection for a vacuum pump with high capacity.
- case (5) is a divided sprayhead (9) fitted in which are found sprays (10) with nozzles (11) which have a flat shaped spray.
- the number of sprays (10) is dependent of the maximum diameter of the to be cleaned coiled tubing.
- the sprays are with channels (12) connected with the high pressure water connection (13).
- the equipment is used when a coiled tubing is retracted from a borehole and winded on a drum.
- the equipment is portable and can in opened position fitted around coiled tubing (1). After closing the equipment the vacuum pump and the high pressure water connections are installed.
- the pressure of the water supply is between 1800 and 3000 bar and the vacuum is held below
- the temperature of the fluid is between 80 and 100 degrees Celcius when the squirt hits the coiled tubing (1).
- the equipment has incorporated a sensor that measures the vacuum and signal when the pressure rises above 0,1 bar absolute and the cleaning action is stopped. The equipment is foreseen with provision that signals when the coiled tubing comes to a halt.
- the equipment is installed as close as possible to the borehole and started while coiled tubing
- (1) is wound on a drum.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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)
- Cleaning In General (AREA)
Abstract
Equipment for cleaning tubes of the type of spiral tube (1) as used in boreholes for oil or gas where length of hundreds of metres occur. The tubes (1) have to be cleaned of deposit, possible radioactive, before winding on large drums. The equipment consists of a case (5) which is divided in length where adjustable guiding rollers (2) lead the tube (1) through a divided sprayhead (9). The sprayhead (9) is provided with a number of spray nozzles (11) which are connected to a high pressure pump. The nozzles (11) in the sprayhead (9) are placed with an angle (14) to obtain a proper cleaning. During the process the case (5) is evacuated with a pump of great capacity. The halves of the case (5) fit together without specific sealing.
Description
Equipment for external cleaning of tubes with fluid under pressure.
Equipment for cleaning tubes of the type of coiled tube as used in boreholes for oil or gas where length of hundreds of metres occur. The tubes have to be cleaned of deposits, possible radioactive, before winding on large drums.
Coiled tubing is tube which is manufactured out of a strip of carbon steel which is formed into a tube and welded lengthwise. The tube is in large lengths (up to 6000 metres) wound on a drum. It is known to clean objects with the help of high pressure water. In general a spray lance is used to squirt water with a pressure of more than 100 bar on the object to be cleaned. The cleaning of coiled tubing tubes which are used in boreholes for oil or gas is difficult because the diameter of the tube is relative small and the fact that these tubes are hundreds of metres long. As a rule these tubes are polluted with light radioactive material. It is found that tubes which are cleaned in the convential way will be again become radioactive after some time. Examination showed that the tubes had micro cracks on the surface which contained dirt which remained after the cleaning.
The invention concerns equipment which cleans the tubes intensive and can be fitted around the tube close to the borehole.
The equipment consists of a case which is divided in length wherein adjustable guiding rollers lead the tube through a divided sprayhead. The sprayhead is foreseen with a number of spray nozzles which are connected to a high pressure pump. The case is foreseen with a connection with a vacuum pump.
The nozzles in the sprayhead are placed with an angle to obtain a proper cleaning. During the process the case is evacuated with a pump of great capacity.The halves of the case fit together without specific sealing.
The invention is described with the help of the drawing Fig. 1 shows a crossection in length over the case. Fig. 2 shows a crossection over the guiding rollers. Fig. 3 shows a crossection over the divided sprayhead.
In Fig. 1 is (1) the to be cleaned coiled tubing. Coiled tubing (1) is guided by double conical guiding rollers (2) which can be adjusted by adjustment (3) to the diameter of the coiled tubing. In the sidewall (4) of case (5) are half rings of synthetic material (6) fixed. Case (5) is divided in two over the length and connected to each other with hinges (7). Opposite hinges (7) are latches which are not drawn. At (8) is a connection for a vacuum pump with high capacity.
In the middle of case (5) is a divided sprayhead (9) fitted in which are found sprays (10) with nozzles (11) which have a flat shaped spray. The number of sprays (10) is dependent of the
maximum diameter of the to be cleaned coiled tubing. The sprays are with channels (12) connected with the high pressure water connection (13).
The centre line of sprays (10) in sprayhead (9) is placed under an angle (14) between 85 amd 65 degrees in relation to the centre line of coiled tubing (1). Case (5) has no special sealing on the dividing surfaces. Also there are no special sealings present with adjustments (3). The half rings (6) of synthetic material have a loose-fitting around coiled tubing (1). Leakage through the cracks causes in combination with the vacuum a large ventilation in case (5).
The equipment is used when a coiled tubing is retracted from a borehole and winded on a drum. The equipment is portable and can in opened position fitted around coiled tubing (1). After closing the equipment the vacuum pump and the high pressure water connections are installed.
The pressure of the water supply is between 1800 and 3000 bar and the vacuum is held below
0,1 bar absolute. The temperature of the fluid is between 80 and 100 degrees Celcius when the squirt hits the coiled tubing (1). The equipment has incorporated a sensor that measures the vacuum and signal when the pressure rises above 0,1 bar absolute and the cleaning action is stopped. The equipment is foreseen with provision that signals when the coiled tubing comes to a halt.
The equipment is installed as close as possible to the borehole and started while coiled tubing
(1) is wound on a drum.
It is found that the combination of vacuum and spraying under an preferable angle of 75 degrees in reference to the centre line of coiled tubing (1) and a temperature between 80 and 100 degrees Celcius with a constant leakage along the dividing surfaces and half rings (6) results in a very good effect where almost all of the radioactive contamination is gone. In between the equipment and the vacuum pump is a water separator which catches water and dirt. In some cases it is possible to separate a part of the collected water which after separation is to be used for the high pressure pump.
Claims
1. Equipment for external cleaning and decontamination of tubes of the type of coiled tubing with the help of fluid under pressure characterised by that the to be cleaned coiled tubing (1) is led through a divisible case (5) wherein a divided sprayhead (9) with sprays for fluid which are directed under an angle (14) onto the outer surface of the to be cleaned coiled tubing (1) and whereby in case (5) prevails a vacuum less than 0,1 bar absolute and where the fluid is supplied with a pressure of 1800 to 3300 bar.
2. Equipment for external cleaning and decontamination of tubes according to claim 1 characterised by that the case (5) is foreseen with adjustable double conical guiding rollers.
3. Equipment for external cleaning and decontamination of tubes according to claim 1 and 2 characterised by that the connecting surfaces of case (5) have no sealing and the half rings of synthetic material (6) have a loose fitting around coiled tubing (1).
4. Equipment for external cleaning and decontamination of tubes according to claim 1, 2 and 3 characterised by that the angle of the fluid squirts related to the surface of the to be cleaned coiled tubing (1) is between 85 and 65 degrees.
5. Equipment for external cleaning and decontamination of tubes according to claim 1 , 2, 3 and 4 characterised by that the equipment is foreseen with a pressure sensor which reacts at pressures above 0,1 bar absolute.
6. Equipment for external cleaning and decontamination of tubes according to claim 1 , 2, 3, 4 and 5 characterised by that the equipment is foreseen with a sensor which reacts at stagnation of the to be cleaned coiled tubing (1).
7. Equipment for external cleaning and decontamination of tubes according to claim 1 , 2, 3, 4, 5 and 6 characterised by that the cleaning fluid is water and has a temperature between 80 and 100 degrees Celcius when hits the to be cleaned coiled tubing (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1017967 | 2001-05-01 | ||
| NL1017967A NL1017967C2 (en) | 2001-05-01 | 2001-05-01 | Cleaning installation for cleaning very long pipes. |
| PCT/NL2002/000279 WO2002087794A1 (en) | 2001-05-01 | 2002-04-25 | Equipment for external cleaning of tubes with fluid under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1385644A1 true EP1385644A1 (en) | 2004-02-04 |
Family
ID=19773323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02731011A Withdrawn EP1385644A1 (en) | 2001-05-01 | 2002-04-25 | Equipment for external cleaning of tubes with fluid under pressure |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1385644A1 (en) |
| NL (1) | NL1017967C2 (en) |
| WO (1) | WO2002087794A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8007595B2 (en) * | 2008-02-28 | 2011-08-30 | Welaptega Marine Limited | Method for in-situ cleaning and inspecting of a tubular |
| DE102009039654A1 (en) * | 2009-09-02 | 2011-03-03 | ITT Mfg. Enterprises, Inc., Wilmington | UV disinfection device with non-contact cleaning |
| US9284791B2 (en) * | 2011-12-20 | 2016-03-15 | Frank's International, Llc | Apparatus and method to clean a tubular member |
| US9200490B2 (en) * | 2012-09-28 | 2015-12-01 | Thomas Engineering Solutions & Consulting, Llc | Methods for internal cleaning and inspection of tubulars |
| CN103331281B (en) * | 2013-07-08 | 2015-04-01 | 富威科技（吴江）有限公司 | Cleaning device for outer surface of jet-type pipe |
| EP3286404B1 (en) * | 2015-04-21 | 2019-09-04 | Frank's International, LLC | Wear sensor for a pipe guide |
| CN106269748B (en) * | 2016-08-30 | 2021-08-27 | 台州长天能源技术有限公司 | Column cleaning device driven by oblique roller |
| CN108655117A (en) * | 2018-04-27 | 2018-10-16 | 海亮（安徽）铜业有限公司 | Guiding de-watering apparatus based on copper tube production |
| DE202019005856U1 (en) * | 2018-11-20 | 2022-09-27 | Gramm Technik Gmbh | Steam cleaning plant and coating plant with steam cleaning |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD251674A3 (en) * | 1977-04-19 | 1987-11-25 | Gert Wohllebe | DEVICE FOR THE CONTINUOUS TREATMENT OF SURFACES OF CYLINDRICAL KOERPERS UNDER PURE FLUID RADIATION RADIATION |
| BE896623A (en) * | 1983-04-29 | 1983-11-03 | Henning & Fils S P R L F | Method of cleaning traction cable - uses jets of water or compressed air followed by compressed air drying and lubrication |
| US5074323A (en) * | 1988-05-23 | 1991-12-24 | Cups, Inc. | Hydrocleaning of the exterior surface of a pipeline to remove coatings |
| US5647906A (en) * | 1992-03-11 | 1997-07-15 | A-Z Terminal Corporation | Pipe cleaning machine |
| US5615696A (en) * | 1992-07-24 | 1997-04-01 | Lawler; Oliver W. | Apparatus for treating pipe |
| US5526877A (en) * | 1995-01-05 | 1996-06-18 | Winz; Frank S. | Oil well head cleaning system |
-
2001
- 2001-05-01 NL NL1017967A patent/NL1017967C2/en not_active IP Right Cessation
-
2002
- 2002-04-25 EP EP02731011A patent/EP1385644A1/en not_active Withdrawn
- 2002-04-25 WO PCT/NL2002/000279 patent/WO2002087794A1/en not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02087794A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| NL1017967C2 (en) | 2002-11-05 |
| WO2002087794A1 (en) | 2002-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20031128 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
| 17Q | First examination report despatched |
Effective date: 20040319 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20040730 |