WO2009123468A1 - Outil de nettoyage - Google Patents

Outil de nettoyage Download PDF

Info

Publication number
WO2009123468A1
WO2009123468A1 PCT/NO2009/000117 NO2009000117W WO2009123468A1 WO 2009123468 A1 WO2009123468 A1 WO 2009123468A1 NO 2009000117 W NO2009000117 W NO 2009000117W WO 2009123468 A1 WO2009123468 A1 WO 2009123468A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning
tool
pipe
connector
cleaning tool
Prior art date
Application number
PCT/NO2009/000117
Other languages
English (en)
Inventor
Espen Osaland
Original Assignee
Aker Well Service 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 Aker Well Service As filed Critical Aker Well Service As
Publication of WO2009123468A1 publication Critical patent/WO2009123468A1/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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/02—Scrapers specially adapted therefor
    • 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
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets

Definitions

  • a cleaning tool More particularly it concerns a cleaning tool for a pipe mantle surface where the cleaning tool comprises a tool housing and a coupling for connection to a cable, a tubing, a well tractor or another component provided to at least being able to pull the cleaning tool in a first direction in the pipe.
  • the outside working diameter of the cleaning tools are somewhat smaller than the inside diameter of the pipe .
  • the cleaning tool due to for example uneven thickness of deposits can be displaced from the longitudinal axis of the pipe whereby a helical opening is formed in the pipe.
  • the cleaning tool It is known to provide the cleaning tool with a tool support just behind the free end portion to counteract the forming of a helical opening.
  • the tool support is formed to be able to abut the internal pipe surface .
  • Prior art tool supports are typically designed with sliding elements, and possibly with a scraper blade abutting the internal pipe surface.
  • the scraper blade is designed to be able to clean deposits from the internal pipe surface.
  • Tool supports according to prior art have turned out to be relatively inefficient.
  • the object of the invention is to remedy or reduce at least one of the prior art drawbacks .
  • the object is achieved according to the invention by the features stated in the below description and in the following Claims .
  • a cleaning tool for the internal surface of a pipe comprising a tool housing and also a connector for connecting to a cable, a tubing, a well tractor or another component designed to at least be able to pull the cleaning tool in a first direction in the pipe, where the cleaning tool is characterised in that the connector is axially displaceable relative to the tool housing, and where the cleaning tool is provided with at least one against the interior pipe surface rollable cleaning element, where a displacement of the connector in a first direction relative to the tool housing effects the at least one cleaning element to be displaced in a direction towards the internal surface relative to the tool housing.
  • One aspect of the cleaning tool is that at least one cleaning element is rotatably placed in a cradle, the cra.dle being radially displaceable in the tool housing.
  • the cleaning element is typically supported about a shaft approximately at right angles to the cleaning tool longitudinal axis.
  • a further aspect of the cleaning tool is that the cradle is provided with an inclined plane cooperating with an inclined plane on a wedge block, the wedge block following the connector when the connector is displaced in the first direction relative to the tool housing.
  • the cradle inclined plane is thus abutting the wedge block inclined plane.
  • the wedge block may be displaceable on a connector stem being connected to the connector. If the wedge block is displaceable on the connector stem, the wedge block is shaped to abut a shoulder connected with the connector stem when the connector stem is displaced in the first direction.
  • the cradle is provided with at least two cleaning elements where at least two of the cleaning elements are given a different surface pattern.
  • the external area of one cleaning element may for example be formed with several pyramid-shaped points while another may be given knife-like ridges surrounding the cleaning element or running axially along the cleaning element. The ridges may possibly follow a helix about the cleaning element .
  • a housing section of the cleaning tool may comprise three cradles distributed about the cleaning tool.
  • Still another aspect of the cleaning tool is that at least two cradles, each having at least one cleaning element, are provided along the longitudinal direction of the cleaning tool, as the cradles are displaced relative to each other along the circumference of the cleaning tool .
  • Still another aspect of the cleaning tool is that a number of cradles, each having at least one cleaning element, are sufficient to treat the whole of the pipe internal surface when the cleaning tool in its activated position is displaced in the pipe. This is achieved for example by interconnecting three housing sections each having three cradles, as each housing section is somewhat displaced relative to an adjacent housing section.
  • a spring is provided to pre-tension the cleaning elements against the pipe wall .
  • the provided cleaning tool is suitable for being displaced back and forth in a pipe, e.g. by means of a well tractor possibly with an actuator fitted.
  • the cleaning tool When the cleaning tool is displaced in the first direction, the cleaning elements are forced against the pipe wall with a force dependent on the force being applied to the connector.
  • the cleaning tool When the cleaning tool is displaced in a second direction, which is opposite to the first direction, the cleaning elements are relieved since only the spring force tries to displace the cleaning elements against the pipe wall. The necessary force to displace the cleaning tool in the second direction is thus modest.
  • the cleaning tool ' s own weight may be enough if the pipe is close to vertical .
  • Fig. 1 shows a cleaning tool in a pipe
  • Fig. 2 shows in somewhat greater scale an end view of the cleaning tool, an end portion of a cradle being i shown in section;
  • Fig. 3 shows a section II - II of fig. 2
  • Fig. 4 shows in perspective and in greater scale a cradle with cleaning elements fitted.
  • the reference numeral 1 indicates a cleaning tool comprising a tool housing 2, a connector 4 for connection to a not shown actuator 5 or the like, and a number of cleaning elements 6.
  • the tool housing 2 is assembled from a first end portion 8 which is closest to the connector 4, three housing sections 10 and a second end portion 12 in the opposite end of the tool housing 2 relative to the first end portion 8.
  • the end portions 8, 12 and the housing sections 10 are interconnected by means of bolt connections 14.
  • the connector 4 is connected to a connector stem 18 by means of a threaded connection 16.
  • the connector stem 18 runs concentrically through borings 20 in the end portions 8, 12 and the housing sections 10.
  • each housing section there is provided a wedge block 22.
  • the ring flange 24 and hence the connector stem 18 is pre-tensioned in the direction towards the connector 4 by a spring 26 exhibiting a force between the ring flange 24 and the second end portion 12.
  • the cleaning elements 6 are shaped as barrel shaped rollers and are each rollably mounted on a shaft 28. Four cleaning elements 6 are provided one after the other in the rolling direction in a cradle 30, and the shafts 28 are attached to the cradle 30.
  • the cradles 30 are radially displaceable in one recess each, in the respective housing sections 10, see figs. 2 and 3. In this preferred embodiment three cradles are distributed about each housing section.
  • the cradles 30 in one housing section 10 is slightly displaced relative to the cradles 30 in the adjacent housing section (s) 10 for the cleaning elements together to cover the largest possible part of the internal surface 36 of a pipe 34.
  • Each cradle is provided with two inclined planes 38, which cooperate with inclined planes 40 on the respective wedge blocks 22, as a displacement of the wedge block 22 in the direction towards the connector 4 causes the cradle 30 with the cleaning elements 6 to be displaced radially outwards toward the internal surface 36.
  • the cleaning elements have different surfaces. In fig. 4 two of the cleaning elements 6 are provided with a relatively large number of points 42, while two cleaning elements 6 are provided with relatively sharp surrounding ridges 44.
  • the cleaning elements 6 During cleaning of such as deposits 46 from the internal surface 36, the cleaning elements 6 abuts somewhat against the deposits 46 due to the spring 26. A certain rolling resistance arises between the cleaning elements 6 and the deposits 46.
  • the pull "in the connector stem 18 contributes to displace the wedge blocks 22 in the direction towards the connector 4 relative to the tool housing 2, whereby the cradles 30 with the cleaning elements 6 are displaced further into the deposits 46.
  • the surfaces of the cleaning elements 6 thus come into a desired engagement with the deposits 46, applying considerable point loads onto the deposits 46, which contributes to break up the deposits so that they come loose from the internal surface 36.
  • the cleaning elements 6 are considerably relieved, whereby the cleaning tool 1 with a relatively small force may be displaced in a second direction, which is opposite to the first direction.
  • the cleaning tool may be displaced back and forth in the pipe 32 until the desired cleaning is achieved.

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)
  • Cleaning In General (AREA)

Abstract

L'invention porte sur un outil de nettoyage (1) de la surface intérieure (36) d'un conduit (34) comportant: un logement (2); un connecteur (4) de liaison à un câble; un tubage, et un tracteur de puits ou un autre composant pouvant au moins tirer l'outil de nettoyage (1) dans une première direction dans le conduit (34). Le connecteur (4) peut se déplacer axialement par rapport au logement (2) de l'outil, l'outil est muni d'au moins un élément de nettoyage (6) pouvant rouler contre la surface intérieure (36) du conduit (34), et le déplacement du connecteur (4) par rapport au logement de l'outil (2) entraînant le déplacement du ou des éléments de nettoyage (6) vers la surface intérieure (36) par rapport au logement (2) de l'outil.
PCT/NO2009/000117 2008-04-03 2009-03-30 Outil de nettoyage WO2009123468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20081652 2008-04-03
NO20081652A NO330064B1 (no) 2008-04-03 2008-04-03 Anordning ved renseverktoy

Publications (1)

Publication Number Publication Date
WO2009123468A1 true WO2009123468A1 (fr) 2009-10-08

Family

ID=40852405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2009/000117 WO2009123468A1 (fr) 2008-04-03 2009-03-30 Outil de nettoyage

Country Status (2)

Country Link
NO (1) NO330064B1 (fr)
WO (1) WO2009123468A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060712A1 (fr) 2010-11-03 2012-05-10 Aker Well Service As Méthode et dispositif outil de nettoyage
CN107091068A (zh) * 2017-07-07 2017-08-25 四川西普石油物资装备有限公司 避免油井中原油通道变窄的装置
CN107091067A (zh) * 2017-07-07 2017-08-25 四川西普石油物资装备有限公司 石油钻取用油井除蜡装置
CN107130941A (zh) * 2017-07-07 2017-09-05 四川西普石油物资装备有限公司 用于原油油井的除蜡方法
CN107201890A (zh) * 2017-07-07 2017-09-26 四川西普石油物资装备有限公司 刮除原油通道壁蜡层的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558738A (en) * 1984-04-02 1985-12-17 Howard Sr Robert G Oil well casing scraper
WO1993016833A1 (fr) * 1992-02-26 1993-09-02 Peco Machine Shop & Inspection Services Ltd. Broche interieure de tube de production
WO2007003894A2 (fr) * 2005-07-02 2007-01-11 Specialised Petroleum Services Group Limited Procede et appareil de nettoyage de puits de forage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558738A (en) * 1984-04-02 1985-12-17 Howard Sr Robert G Oil well casing scraper
WO1993016833A1 (fr) * 1992-02-26 1993-09-02 Peco Machine Shop & Inspection Services Ltd. Broche interieure de tube de production
WO2007003894A2 (fr) * 2005-07-02 2007-01-11 Specialised Petroleum Services Group Limited Procede et appareil de nettoyage de puits de forage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060712A1 (fr) 2010-11-03 2012-05-10 Aker Well Service As Méthode et dispositif outil de nettoyage
US20140150822A1 (en) * 2010-11-03 2014-06-05 Aker Well Service As Method and cleaning tool device
US9815096B2 (en) 2010-11-03 2017-11-14 Altus Intervention As Method and a device for cleaning an area located inside a restriction
EP2635384A4 (fr) * 2010-11-03 2018-02-28 Altus Intervention AS Méthode et dispositif outil de nettoyage
CN107091068A (zh) * 2017-07-07 2017-08-25 四川西普石油物资装备有限公司 避免油井中原油通道变窄的装置
CN107091067A (zh) * 2017-07-07 2017-08-25 四川西普石油物资装备有限公司 石油钻取用油井除蜡装置
CN107130941A (zh) * 2017-07-07 2017-09-05 四川西普石油物资装备有限公司 用于原油油井的除蜡方法
CN107201890A (zh) * 2017-07-07 2017-09-26 四川西普石油物资装备有限公司 刮除原油通道壁蜡层的方法

Also Published As

Publication number Publication date
NO20081652L (no) 2009-10-05
NO330064B1 (no) 2011-02-14

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