WO2003036020A1 - A method and a device for a collecting screw - Google Patents

A method and a device for a collecting screw Download PDF

Info

Publication number
WO2003036020A1
WO2003036020A1 PCT/NO2002/000375 NO0200375W WO03036020A1 WO 2003036020 A1 WO2003036020 A1 WO 2003036020A1 NO 0200375 W NO0200375 W NO 0200375W WO 03036020 A1 WO03036020 A1 WO 03036020A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveyor auger
sand
receptacle
collecting
collecting device
Prior art date
Application number
PCT/NO2002/000375
Other languages
French (fr)
Inventor
David ØXNEVAD GARDNER
Helge Lien
Are Sandkleiva
Original Assignee
Maritime 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 Maritime Well Service As filed Critical Maritime Well Service As
Publication of WO2003036020A1 publication Critical patent/WO2003036020A1/en

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
    • E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
    • E21B27/04—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying means
    • 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

Definitions

  • This invention relates to a loosening and collecting device for sand and other materials, for use in particular in petroleum wells which include sharply bent pipe bores.
  • deposited material may prevent maintenance work, especially when simple methods such as cable operations are involved.
  • Oil and gas wells are commonly divided into the following groups :
  • Extended reach wells in which the angular deviation relative to the vertical direction exceeds 65 degrees .
  • sand collectors are used, which are lowered into the well by means of a cable, for example.
  • the sand collectors include collecting chambers and are available in designs, in which they are hammered into the sand, suck into the sand by means of a built-in piston arrangement or by a plate opening a room below atmospheric pressure, whereby the well pressure moves sand and other material into the collecting chamber.
  • the invention has as its object to remedy the drawbacks of the prior art.
  • a collecting device includes a scraping and conveying device, which, besides loosening deposited mass, transports the loosened mass into a collecting chamber.
  • the scraping tool in the following referred to as a scraper, formed by a knife-like rotor and a conveyor auger, is driven by a motor provided in the tool.
  • the rotating scraper tears up the deposited mass, after which the conveyor auger, advantageously rotating about an axis shared by the scraper, moves the loosened mass from the scraper in through a . pipe and further into a collecting chamber.
  • the invention may be connected to a well tractor which moves the collecting device along extended reach well sections and horizontal well sections. The invention is also well suited for use in conventional wells.
  • the tool is pulled up to the surface where it is emptied. The operation is repeated until the sand/debris deposit has been removed.
  • Fig. 1 shows a collecting device according to the invention at work in a well casing
  • Fig. 2 shows a longitudinal section of the collecting device of Fig. 1.
  • the reference numeral 1 identifies a collecting device according to the invention, comprising a scraper 2, a first bearing housing 4, a feed pipe 6 fixedly connected to the first bearing housing 4, a second bearing housing 8 fixedly connected to the opposite end portion of the feed pipe 6, a receptacle 10 fixedly connected to the second bearing housing 8 and a motor housing 12 fixedly connected to the opposite end portion of the receptacle 10.
  • the collecting device 1 is preferably connected to a well tractor 14, known in itself, by means of a connector 16.
  • An electric or hydraulic motor 18 is disposed in the motor housing 12 and rotates a shaft 20, the shaft 20 extending concentrically through the receptacle 10 to a second bearing 22 disposed in the second bearing housing 8.
  • a conveyor auger 24 is rotationally fixed to the shaft 20 and extends from theshaft 20 through the feed pipe 6 to a first bearing 26 disposed in the first bearing housing 4.
  • the scraper 2 is fixedly connected to the conveyor auger 24.
  • a shut-off device 28 which may be in the form of a valve flap formed of an elastic material for example, is arranged at the second bearing housing and is arranged to prevent collected mass from flowing out of the receptacle 10. If convenient, the shut-off device 28 may be disposed above the first bearing housing 4.
  • the propulsion resistance of the well tractor 14 increases as the tool 1 is moved into deposits.
  • the motor 18 starts automatically, whereby the rotating scraper 2 driven by the shaft 20 and conveyor auger 24, loosens the deposits while, at the same time, the scraper 2 feeds the deposits into the conveyor auger 24. Then, the deposits are moved internally through the feed pipe 6 by means of the rotating conveyor auger 24 into the receptacle 10.
  • the shaft 20 may be provided with conveyor auger vanes 32 to facilitate the filling of the receptacle 10.
  • the collecting tool 1 When the receptacle 10 has been filled with deposits, the collecting tool 1 is returned to the surface, where the receptacle 10 is emptied. The cleaning operation is repeated until the deposit has been removed. When the deposit is no longer present, the propulsion resistance of the well tractor 14 will be reduced to a level below the level of engagement of the engine 18, whereby the collecting device 1 will be moved in the well pipe 30 without the scraping tool 2 and the .conveyor auger 24 rotating.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Earth Drilling (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A method and device for loosening and collecting sand and other contaminations, by means of a collecting device (1), from a tubular space (30) especially in petroleum wells, wherein the sand and other contaminations are fed into a receptacle (10) by means of a conveyor auger (24), the conveyor auger (24) extending through a feed pipe (6) from the scraping/loosening tool (2) of the collecting device (1) to a receptacle (10).

Description

A method and a device for a collecting screw
This invention relates to a loosening and collecting device for sand and other materials, for use in particular in petroleum wells which include sharply bent pipe bores.
It happens relatively often that sand and other material settle on the inside of a pipe belonging to an oil or gas well. Such deposited material may, if there is a sufficient build-up thereof, greatly inhibit fluid flow through the pipe. Normally, the deposited material will be removed by means of tools, as it is common through the application of coiled tubing, snubbing or drilling techniques.
Also in smaller amounts, even if it does not affect the well production to any substantial degree, deposited material may prevent maintenance work, especially when simple methods such as cable operations are involved.
It is not uncommon for sand and other material deposited in a well, even in moderate amounts, to prevent tools from reaching the desired position in the well during maintenance work.
Oil and gas wells are commonly divided into the following groups :
- Conventional wells, in which the largest angular deviation from the vertical direction is about 65 degrees.
Extended reach wells, in which the angular deviation relative to the vertical direction exceeds 65 degrees .
Horizontal wells, in which some well sections have an angular deviation of about 90 degrees relative to the vertical direction.
According to the prior art, in conventional wells sand collectors are used, which are lowered into the well by means of a cable, for example. The sand collectors include collecting chambers and are available in designs, in which they are hammered into the sand, suck into the sand by means of a built-in piston arrangement or by a plate opening a room below atmospheric pressure, whereby the well pressure moves sand and other material into the collecting chamber.
The prior art methods are simple and their implementation relatively inexpensive. Thus, they are well suited for conventional wells, in which the deposits form bridges covering the entire pipe cross section, and in which it is therefore easy to fill the collecting chambers with deposits by means of one of the methods mentioned above.
Two conditions, in particular, distinguish extended reach wells and horizontal wells from conventional wells as far as deposits and methods from clearing out the deposits are concerned. Deposit bridges rarely form in the pipe as, due to gravitational forces, the deposits form on the downward circumferential half. Prior art sand collectors, which are arranged to be sucked down into the deposits, are not efficient when the deposits are spread along the pipe as the ^collectors will essentially be filled with fluid.
The gravitational forces acting on a tool in the axial direction of the well pipe decrease with the angular deviation of the well relative to the vertical axis, and are nil at horizontal well sections. Cable tools depending on the axial component of the tool weight to work satisfactorily, cannot be used in such conditions. The tools may be supplemented with well tractors to improve propulsion, but such devices do not normally exert sufficient force to fill a collecting chamber of the prior art.
The invention has as its object to remedy the drawbacks of the prior art.
The object is realized according to the invention through the features specified in the description below and in the following Claims.
A collecting device includes a scraping and conveying device, which, besides loosening deposited mass, transports the loosened mass into a collecting chamber. The scraping tool, in the following referred to as a scraper, formed by a knife-like rotor and a conveyor auger, is driven by a motor provided in the tool. The rotating scraper tears up the deposited mass, after which the conveyor auger, advantageously rotating about an axis shared by the scraper, moves the loosened mass from the scraper in through a .pipe and further into a collecting chamber. The invention may be connected to a well tractor which moves the collecting device along extended reach well sections and horizontal well sections. The invention is also well suited for use in conventional wells.
After the collection chamber has been filled, the tool is pulled up to the surface where it is emptied. The operation is repeated until the sand/debris deposit has been removed.
In the following is described a non-limiting example of a preferred embodiment, which is visualized in the accompanying drawings, in which:
Fig. 1 shows a collecting device according to the invention at work in a well casing; and
Fig. 2 shows a longitudinal section of the collecting device of Fig. 1.
In the drawings the reference numeral 1 identifies a collecting device according to the invention, comprising a scraper 2, a first bearing housing 4, a feed pipe 6 fixedly connected to the first bearing housing 4, a second bearing housing 8 fixedly connected to the opposite end portion of the feed pipe 6, a receptacle 10 fixedly connected to the second bearing housing 8 and a motor housing 12 fixedly connected to the opposite end portion of the receptacle 10.
The collecting device 1 is preferably connected to a well tractor 14, known in itself, by means of a connector 16.
An electric or hydraulic motor 18 is disposed in the motor housing 12 and rotates a shaft 20, the shaft 20 extending concentrically through the receptacle 10 to a second bearing 22 disposed in the second bearing housing 8. A conveyor auger 24 is rotationally fixed to the shaft 20 and extends from theshaft 20 through the feed pipe 6 to a first bearing 26 disposed in the first bearing housing 4. The scraper 2 is fixedly connected to the conveyor auger 24.
A shut-off device 28, which may be in the form of a valve flap formed of an elastic material for example, is arranged at the second bearing housing and is arranged to prevent collected mass from flowing out of the receptacle 10. If convenient, the shut-off device 28 may be disposed above the first bearing housing 4.
When the collecting tool 1 is moved within a well pipe 30 by means of the well tractor 14, the propulsion resistance of the well tractor 14 increases as the tool 1 is moved into deposits. At a predetermined propulsion resistance the motor 18 starts automatically, whereby the rotating scraper 2 driven by the shaft 20 and conveyor auger 24, loosens the deposits while, at the same time, the scraper 2 feeds the deposits into the conveyor auger 24. Then, the deposits are moved internally through the feed pipe 6 by means of the rotating conveyor auger 24 into the receptacle 10. The shaft 20 may be provided with conveyor auger vanes 32 to facilitate the filling of the receptacle 10.
When the receptacle 10 has been filled with deposits, the collecting tool 1 is returned to the surface, where the receptacle 10 is emptied. The cleaning operation is repeated until the deposit has been removed. When the deposit is no longer present, the propulsion resistance of the well tractor 14 will be reduced to a level below the level of engagement of the engine 18, whereby the collecting device 1 will be moved in the well pipe 30 without the scraping tool 2 and the .conveyor auger 24 rotating.

Claims

C L A I M S
A method of loosening and collecting sand and other contaminations, by means of a collecting device (1), from a tubular space (30), in particular in petroleum wells, c h a r a c t e r i z e d i n that sand and other contaminations are fed into a receptacle (10) by means of a conveyor auger (24).
A method according to claim 1, c harac ter i z ed i n that a scraping/loosening tool (2) and the conveyor auger (24) are started automatically whenever the propulsive power of a well tractor (14) connected to the collecting device (1) exceeds a predetermined level.
A device in a collecting device (1), which is arranged to loosen and collect sand and other contaminations from a tubular space (30) in particular in petroleum wells, c haracter i z ed in that a conveyor auger (24) extends through a feed pipe (6) from the scraping/loosening tool (2) of the collecting device (1) to a receptacle (10).
A device according to claim 3, c haracter i z ed i n that the conveyor auger (24) is driven by a motor (18) through a rotary shaft (20) extending through the receptacle (10).
A device according to claims 3 to 4, c har ac - ter i z ed in that the drive shaft (20) is provided with conveyor auger vanes (32). A device according to claims 3 to 5, c har ac ter i z ed i n that the scraping/loosening tool (2) forms an extension of the conveyor auger (24).
PCT/NO2002/000375 2001-10-24 2002-10-17 A method and a device for a collecting screw WO2003036020A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20015189A NO315212B3 (en) 2001-10-24 2001-10-24 Method and apparatus for collecting screw
NO20015189 2001-10-24

Publications (1)

Publication Number Publication Date
WO2003036020A1 true WO2003036020A1 (en) 2003-05-01

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PCT/NO2002/000375 WO2003036020A1 (en) 2001-10-24 2002-10-17 A method and a device for a collecting screw

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WO (1) WO2003036020A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441611A (en) * 2006-07-28 2008-03-12 Rotary Drilling Supplies Europ Helical debris collection device
WO2013105865A1 (en) * 2012-01-10 2013-07-18 Aker Well Service As Method and device for removal of a hydrate plug
US20150240583A1 (en) * 2012-09-27 2015-08-27 Halliburton Energy Services Powered Wellbore Bailer
WO2015142184A1 (en) * 2014-03-18 2015-09-24 Altus Intervention As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
CN104963641A (en) * 2015-07-02 2015-10-07 中联煤层气国家工程研究中心有限责任公司 Device for obtaining pulverized coal in coal-bed gas well
WO2016148576A1 (en) * 2015-03-18 2016-09-22 Qinterra Technologies As Collecting device and method for loosen and collect debris in a well
NO20160326A1 (en) * 2016-02-26 2017-08-28 Qinterra Tech As Downhole debris-collecting tool having an improved valve
CN110894780A (en) * 2018-09-13 2020-03-20 中国石油化工股份有限公司 Self-rotating scraping casing pipe processor for oil-water well workover
US10815757B2 (en) 2016-03-15 2020-10-27 Altus Intervention (Technologies) As System and method for cleaning a receptacle
CN112360378A (en) * 2020-12-04 2021-02-12 中国石油天然气股份有限公司 Electric spiral bailing tool and bailing method
US11236566B2 (en) 2016-11-11 2022-02-01 Altus Intervention (Technologies) As Downhole debris collecting device with a filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO345327B1 (en) * 2014-10-03 2020-12-14 Altus Intervention As Cable-operated unloading container and procedure for unloading material in a well

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2187845A (en) * 1939-08-14 1940-01-23 Tatalovich Eli Clean-out tool
US2497659A (en) * 1944-10-21 1950-02-14 Thomas J Davis Tubing cleaning device
US5224548A (en) * 1991-12-26 1993-07-06 Dankovich Ii Kalman E Apparatus and method for retrieving lost materials in slanted boreholes
US5299639A (en) * 1992-03-12 1994-04-05 Wada Ventures, A Partnership Methods and apparatus for removing debris from a well bore

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187845A (en) * 1939-08-14 1940-01-23 Tatalovich Eli Clean-out tool
US2497659A (en) * 1944-10-21 1950-02-14 Thomas J Davis Tubing cleaning device
US5224548A (en) * 1991-12-26 1993-07-06 Dankovich Ii Kalman E Apparatus and method for retrieving lost materials in slanted boreholes
US5299639A (en) * 1992-03-12 1994-04-05 Wada Ventures, A Partnership Methods and apparatus for removing debris from a well bore

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441611A (en) * 2006-07-28 2008-03-12 Rotary Drilling Supplies Europ Helical debris collection device
NO339382B2 (en) * 2012-01-10 2016-12-05 Qinterra Tech As Method and apparatus for removing a hydrate plug
WO2013105865A1 (en) * 2012-01-10 2013-07-18 Aker Well Service As Method and device for removal of a hydrate plug
GB2517247A (en) * 2012-01-10 2015-02-18 Altus Intervention As Method and device for removal of a hydrate plug
GB2517247B (en) * 2012-01-10 2017-07-12 Altus Intervention As Method and device for removal of a hydrate plug
US10240433B2 (en) 2012-01-10 2019-03-26 Qinterra Technologies As Hydrate plug remover
US9416903B2 (en) 2012-01-10 2016-08-16 Altus Intervention As Method and device for removal of a hydrate plug
NO339382B1 (en) * 2012-01-10 2016-12-05 Qinterra Tech As Method and apparatus for removing a hydrate plug
US20150240583A1 (en) * 2012-09-27 2015-08-27 Halliburton Energy Services Powered Wellbore Bailer
US9334704B2 (en) * 2012-09-27 2016-05-10 Halliburton Energy Services, Inc. Powered wellbore bailer
US10704351B2 (en) 2014-03-18 2020-07-07 Qinterra Technologies As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
GB2539808A (en) * 2014-03-18 2016-12-28 Qinterra Tech As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
US20170009545A1 (en) * 2014-03-18 2017-01-12 Qinterra Technologies As Collecting Device For Particulate Material In A Well And A Method For Collecting The Particulate Material And Transporting It Out Of The Well
DK178951B1 (en) * 2014-03-18 2017-06-26 Qinterra Tech As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
WO2015142184A1 (en) * 2014-03-18 2015-09-24 Altus Intervention As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
GB2539808B (en) * 2014-03-18 2020-12-09 Qinterra Tech As Collecting device for particulate material in a well and a method for collecting the particulate material and transporting it out of the well
US11319763B2 (en) 2015-03-18 2022-05-03 Qinterra Technologies As Collecting device and method for loosen and collect debris in a well
GB2552112A (en) * 2015-03-18 2018-01-10 Quinterra Tech As Collecting device and method for loosen and collect debris in a well
GB2552112B (en) * 2015-03-18 2019-09-11 Quinterra Tech As Collecting device and method for loosen and collect debris in a well
US20180073317A1 (en) * 2015-03-18 2018-03-15 Qinterra Technologies As Collecting Device And Method For Loosen And Collect Debris And A Well
WO2016148576A1 (en) * 2015-03-18 2016-09-22 Qinterra Technologies As Collecting device and method for loosen and collect debris in a well
US10669795B2 (en) 2015-03-18 2020-06-02 Qinterra Technologies As Collecting device and method for loosen and collect debris in a well
CN104963641A (en) * 2015-07-02 2015-10-07 中联煤层气国家工程研究中心有限责任公司 Device for obtaining pulverized coal in coal-bed gas well
WO2017146587A1 (en) * 2016-02-26 2017-08-31 Qinterra Technologies As Downhole debris-collecting tool having an improved valve
US20190055802A1 (en) * 2016-02-26 2019-02-21 Altus Intervention (Technologies) As Downhole Debris-Collecting Tool Having An Improved Valve
GB2561138A (en) * 2016-02-26 2018-10-03 Altus Intervention Tech As Downhole debris-collecting tool having an improved valve
US10858900B2 (en) 2016-02-26 2020-12-08 Altus Intervention (Technologies) As Downhole debris-collecting tool having an improved valve
NO341975B1 (en) * 2016-02-26 2018-03-05 Qinterra Tech As Downhole debris-collecting tool having an improved valve
GB2561138B (en) * 2016-02-26 2021-04-28 Altus Intervention Tech As Downhole debris-collecting tool having an improved valve
NO20160326A1 (en) * 2016-02-26 2017-08-28 Qinterra Tech As Downhole debris-collecting tool having an improved valve
US10815757B2 (en) 2016-03-15 2020-10-27 Altus Intervention (Technologies) As System and method for cleaning a receptacle
US11236566B2 (en) 2016-11-11 2022-02-01 Altus Intervention (Technologies) As Downhole debris collecting device with a filter
CN110894780A (en) * 2018-09-13 2020-03-20 中国石油化工股份有限公司 Self-rotating scraping casing pipe processor for oil-water well workover
CN112360378A (en) * 2020-12-04 2021-02-12 中国石油天然气股份有限公司 Electric spiral bailing tool and bailing method

Also Published As

Publication number Publication date
NO20015189L (en) 2003-04-25
NO315212B1 (en) 2003-07-28
NO315212B3 (en) 2003-07-28
NO20015189D0 (en) 2001-10-24

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