WO2009116869A2 - Cleaning tool - Google Patents

Cleaning tool Download PDF

Info

Publication number
WO2009116869A2
WO2009116869A2 PCT/NO2009/000062 NO2009000062W WO2009116869A2 WO 2009116869 A2 WO2009116869 A2 WO 2009116869A2 NO 2009000062 W NO2009000062 W NO 2009000062W WO 2009116869 A2 WO2009116869 A2 WO 2009116869A2
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning tool
actuator
volume
housing
flushing liquid
Prior art date
Application number
PCT/NO2009/000062
Other languages
French (fr)
Other versions
WO2009116869A3 (en
Inventor
Karluf Hagen
Original Assignee
Innovar Engineering 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 Innovar Engineering As filed Critical Innovar Engineering As
Publication of WO2009116869A2 publication Critical patent/WO2009116869A2/en
Publication of WO2009116869A3 publication Critical patent/WO2009116869A3/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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • 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
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/063—Valve or closure with destructible element, e.g. frangible disc
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes

Definitions

  • a cleaning tool More particularly it concerns a cleaning tool for utilisation in a borehole where the cleaning tool comprises a collection volume.
  • hydrostatic cleaning tool During cleaning work in a borehole, for example when sand is to be removed from a tool attachment, it is common to utilise a so-called hydrostatic cleaning tool.
  • the hydrostatic cleaning tool is placed at the tool so that the cleaning tool inflow opening is close to the area to be cleaned.
  • a room in the cleaning tool is under relatively low pressure.
  • the room is opened whereby borehole fluid flows into the room via the inflow opening.
  • the borehole fluid draws sand with it into the cleaning tool.
  • the cleaning tool is then displaced to the surface and emptied.
  • the object of the invention is to mitigate or reduce at least one of the prior art drawbacks .
  • the object is achieved according to the invention by the features given in the below description and in the following claims .
  • a cleaning tool for utilisation in a bore- hole, where the cleaning tool comprises a collection volume, and where the cleaning tool is characterised by an actuator in the cleaning tool, being arranged to be able to reduce an in the cleaning tool present volume of flushing liquid, as a discharging flushing liquid from the volume of flushing liq- uid is led through a jet pod and directed towards an object to be cleaned.
  • the actuator is also arranged to be able to effect that the collection volume increases, as the collection volume is communicating with the surroundings at the jet pod discharge.
  • the actuator is arranged to be able to be driven by a fluid pressure surrounding the cleaning tool .
  • volume of flushing liquid and the collection volume are at opposite sides of a working piston in a work chamber housing.
  • a further aspect of the cleaning tool is that working piston is coupled to an actuator piston provided in an actuator housing.
  • an intermediate pipe connects the working piston with the actuator piston, as the intermediate pipe runs displaceably and sealingly through an intermediate housing.
  • a valve body arranged to be able to be activated by the fluid pressure surrounding the cleaning tool, opens for fluid inflow to an actuator volume when activated.
  • valve body communicates with the surrounding fluid pressure via the intermediate pipe.
  • the discharging flushing fluid contributes to free matter from the object to be cleaned, where after the freed matter flows into the collection volume as this is increased.
  • Fig. 1 shows a longitudinal section through the cleaning tool where the cleaning tool is in its starting po- sition
  • Fig. 2 shows a section I-I of Fig. 1:
  • Fig. 3 shows a part of Fig. 1 in greater detail immediately after the tool is released
  • Fig. 4 shows the same as Fig. 3, but -at a somewhat later time after the working components of the cleaning tool have been displaced some;
  • Fig. 5 shows the same as Fig. 1, but after the cleaning tool has carried out its cleaning operation.
  • the reference numeral 1 denotes a cleaning tool comprising an intermediate housing 2, an actuator housing 4 and a work chamber housing 6.
  • the actuator housing 4 is made up of a cylinder pipe, which is sealingly connected be- tween the intermediate housing 2 and a coupling 8.
  • the coupling 8 fits a transport tool (not shown), e.g. a coiled tubing.
  • the work chamber housing 6 runs sealingly between the intermediate housing 2 and an end piece 10 in the opposite direc- tion from the intermediate housing 2 relative to the actuator housing 4.
  • the intermediate housing 2, actuator housing 4, work chamber housing 6, coupling 8 and end piece 10 have a common central axis 12.
  • Seals are generally given the reference numeral 14 and their mode of operation is not explained further.
  • the actuator housing 4 is connected to the coupling 8 by a threaded connection 16 while the actuator housing 4 and the work chamber housing 6 are locked to the intermediate housing 2 and the end piece 10 respectively, by means of locking bolts 18.
  • An actuator piston 20 is sealingly and displaceably provided in the actuator housing 4.
  • the actuator piston 20 is, on its side facing the intermediate housing 2, provided with a cen- trally extending valve portion 22 complementary fitting in a recess 24 in the intermediate housing 2.
  • the actuator piston 20, actuator housing 4 and intermediate housing 2 constitute an actuator 25.
  • a valve body 26 is sealingly and displaceably arranged in a central valve bore 28 in the working piston 20.
  • the valve bore 28 runs through the valve portion 22 and to near the opposite side of the actuator piston 20 where a smaller bore 30 runs there through.
  • valve body 26 is in its starting position; see Fig. 1, held in place by a valve break pin 32 whereby the valve body 26 seals for a transverse channel 34 in the valve portion 22.
  • a working piston 36 is sealingly and displaceably provided in the work chamber housing 6.
  • the working piston 36 is connected to the actuator piston 20 by means of a central inter- mediate pipe 38.
  • the intermediate pipe 38 being sealingly and displaceable in a central bore 40 in the intermediate housing 2, leads into the valve bore 28 and runs through the working piston 36.
  • the intermediate pipe 38 is sealingly threaded in both the actuator piston 20 and the working piston 36.
  • the end piece 10 comprises a central opening 42 provided with a check valve 44 in the form of flexible bodies.
  • the check valve 44 is shown in the open position in Fig. 1 and in the closed position in Fig. 5.
  • Two jet pods 46 run parallel with the central axis 12 from the intermediate housing 2, where they are placed in blind holes 48, sealingly through the working piston 36 and out through the end piece 10.
  • the jet pods 46 being provided with inflow openings 50 at the intermediate housing 2, discharges just outside the end piece 10.
  • a volume in the actuator housing 4 between the actuator piston 20 and the coupling 8 constitutes a gas volume 52, while a volume in the actuator housing 4 between the actuator piston 20 and the intermediate housing 2 constitutes an actuator volume 54.
  • a volume in the work chamber hous- ing 6 between the working piston 36 and the intermediate housing 2 constitutes a flushing liquid volume 56, while a volume in the work chamber housing 6 between the working piston 36 and the end piece 10 constitutes a collection volume 58.
  • the flushing liquid volume 56 is filled with flushing liquid, as the pistons 20, 36 are displaced to their starting positions; see Fig. 1, and locked by means of a pis- ton break pin 60.
  • the gas volume is typically filled with air at atmospheric pressure.
  • the jet pods 46 and thereby the central opening 42 are placed close to the area to be cleaned.
  • valve break pin 32 is broken whereby the surrounding fluid pressure displaces the valve body 26 in the valve bore 28; see Fig. 3.
  • the channel 34 is thereby opened for inflow of well fluid flowing via the central opening 42, the intermediate pipe 38, the valve bore 28, the channel 34 and into the actuator volume 54.
  • the surrounding fluid pressure thereby acts against the whole of the actuator piston 20 area.
  • the force being set up breaks the piston break pins 60 whereby the actuator piston 20 is displaced towards the coupling 8 and at the same time pulling the working piston 36 with it; see Fig. 4.
  • the fluid in the flushing liquid chamber 56 is displaced and flows out via the inflow openings 50 and the jet pods 46 against the object to be cleaned at the same time as material flows into the collection volume 58 via the central opening 42 and the check valve 44.
  • the check valve 44 closes, where after the cleaning tool can be displaced to the surface.
  • the gas in the gas volume 52 flows out through a relief valve 62.

Landscapes

  • 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)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)

Abstract

A cleaning tool (1) for use in a borehole where the cleaning tool (1) comprises a collection volume (58), and where an actuator (25) in the cleaning tool (1) is disposed to be able to reduce a flushing liquid volume (56) being in the cleaning tool, as a discharging flushing liquid from the flushing liquid volume (56) is led through a jet pod (46) and directed towards an object to be cleaned.

Description

CLEANING TOOL
There is provided a cleaning tool. More particularly it concerns a cleaning tool for utilisation in a borehole where the cleaning tool comprises a collection volume.
During cleaning work in a borehole, for example when sand is to be removed from a tool attachment, it is common to utilise a so-called hydrostatic cleaning tool.
According to prior art, the hydrostatic cleaning tool is placed at the tool so that the cleaning tool inflow opening is close to the area to be cleaned. A room in the cleaning tool is under relatively low pressure. The room is opened whereby borehole fluid flows into the room via the inflow opening. The borehole fluid draws sand with it into the cleaning tool. The cleaning tool is then displaced to the surface and emptied.
It turns out that cleaning tools of this type are relatively inefficient and that cleaning operations therefore have to be repeated several times before a satisfactory result is achieved. It is obvious that such repeated cleaning opera- tions are both time consuming and relatively costly.
The object of the invention is to mitigate or reduce at least one of the prior art drawbacks . The object is achieved according to the invention by the features given in the below description and in the following claims .
There is provided a cleaning tool for utilisation in a bore- hole, where the cleaning tool comprises a collection volume, and where the cleaning tool is characterised by an actuator in the cleaning tool, being arranged to be able to reduce an in the cleaning tool present volume of flushing liquid, as a discharging flushing liquid from the volume of flushing liq- uid is led through a jet pod and directed towards an object to be cleaned.
One aspect of the cleaning tool is that the actuator is also arranged to be able to effect that the collection volume increases, as the collection volume is communicating with the surroundings at the jet pod discharge.
Another aspect of the cleaning tool is that the actuator is arranged to be able to be driven by a fluid pressure surrounding the cleaning tool .
Still another aspect of the cleaning tool is that the volume of flushing liquid and the collection volume are at opposite sides of a working piston in a work chamber housing.
A further aspect of the cleaning tool is that working piston is coupled to an actuator piston provided in an actuator housing.
Yet another aspect of the cleaning tool is that an intermediate pipe connects the working piston with the actuator piston, as the intermediate pipe runs displaceably and sealingly through an intermediate housing. Still another aspect of the cleaning tool is that a valve body arranged to be able to be activated by the fluid pressure surrounding the cleaning tool, opens for fluid inflow to an actuator volume when activated.
Yet another aspect of the cleaning tool is that the valve body communicates with the surrounding fluid pressure via the intermediate pipe.
When the provided cleaning tool is utilised in the way it is described in the special part of the application below, the discharging flushing fluid contributes to free matter from the object to be cleaned, where after the freed matter flows into the collection volume as this is increased.
Tests have shown that a considerably improved efficiency is achieved when the provided cleaning tool is compared to prior art cleaning tools.
In the following, an example of a preferred embodiment is described which is illustrated in the appended drawings, where:
Fig. 1 shows a longitudinal section through the cleaning tool where the cleaning tool is in its starting po- sition;
Fig. 2 shows a section I-I of Fig. 1:
Fig. 3 shows a part of Fig. 1 in greater detail immediately after the tool is released;
Fig. 4 shows the same as Fig. 3, but -at a somewhat later time after the working components of the cleaning tool have been displaced some; and
Fig. 5 shows the same as Fig. 1, but after the cleaning tool has carried out its cleaning operation. In the drawings the reference numeral 1 denotes a cleaning tool comprising an intermediate housing 2, an actuator housing 4 and a work chamber housing 6. The actuator housing 4 is made up of a cylinder pipe, which is sealingly connected be- tween the intermediate housing 2 and a coupling 8. The coupling 8 fits a transport tool (not shown), e.g. a coiled tubing.
The work chamber housing 6 runs sealingly between the intermediate housing 2 and an end piece 10 in the opposite direc- tion from the intermediate housing 2 relative to the actuator housing 4.
The intermediate housing 2, actuator housing 4, work chamber housing 6, coupling 8 and end piece 10 have a common central axis 12.
Seals are generally given the reference numeral 14 and their mode of operation is not explained further.
The actuator housing 4 is connected to the coupling 8 by a threaded connection 16 while the actuator housing 4 and the work chamber housing 6 are locked to the intermediate housing 2 and the end piece 10 respectively, by means of locking bolts 18.
An actuator piston 20 is sealingly and displaceably provided in the actuator housing 4. The actuator piston 20 is, on its side facing the intermediate housing 2, provided with a cen- trally extending valve portion 22 complementary fitting in a recess 24 in the intermediate housing 2. The actuator piston 20, actuator housing 4 and intermediate housing 2 constitute an actuator 25.
A valve body 26 is sealingly and displaceably arranged in a central valve bore 28 in the working piston 20. The valve bore 28 runs through the valve portion 22 and to near the opposite side of the actuator piston 20 where a smaller bore 30 runs there through.
The valve body 26 is in its starting position; see Fig. 1, held in place by a valve break pin 32 whereby the valve body 26 seals for a transverse channel 34 in the valve portion 22.
A working piston 36 is sealingly and displaceably provided in the work chamber housing 6. The working piston 36 is connected to the actuator piston 20 by means of a central inter- mediate pipe 38. The intermediate pipe 38 being sealingly and displaceable in a central bore 40 in the intermediate housing 2, leads into the valve bore 28 and runs through the working piston 36.
The intermediate pipe 38 is sealingly threaded in both the actuator piston 20 and the working piston 36.
The end piece 10 comprises a central opening 42 provided with a check valve 44 in the form of flexible bodies. The check valve 44 is shown in the open position in Fig. 1 and in the closed position in Fig. 5.
Two jet pods 46 run parallel with the central axis 12 from the intermediate housing 2, where they are placed in blind holes 48, sealingly through the working piston 36 and out through the end piece 10. The jet pods 46 being provided with inflow openings 50 at the intermediate housing 2, discharges just outside the end piece 10.
A volume in the actuator housing 4 between the actuator piston 20 and the coupling 8 constitutes a gas volume 52, while a volume in the actuator housing 4 between the actuator piston 20 and the intermediate housing 2 constitutes an actuator volume 54. Correspondingly a volume in the work chamber hous- ing 6 between the working piston 36 and the intermediate housing 2 constitutes a flushing liquid volume 56, while a volume in the work chamber housing 6 between the working piston 36 and the end piece 10 constitutes a collection volume 58.
Before the cleaning tool 1 is lowered down into a borehole (not shown) , the flushing liquid volume 56 is filled with flushing liquid, as the pistons 20, 36 are displaced to their starting positions; see Fig. 1, and locked by means of a pis- ton break pin 60. The gas volume is typically filled with air at atmospheric pressure.
When the cleaning tool 1 is lowered down into a borehole (not shown) , the hydrostatic pressure surrounding the cleaning tool 1 increases .
The jet pods 46 and thereby the central opening 42 are placed close to the area to be cleaned.
By increasing the pressure in the borehole (not shown) sufficiently, the valve break pin 32 is broken whereby the surrounding fluid pressure displaces the valve body 26 in the valve bore 28; see Fig. 3.
The channel 34 is thereby opened for inflow of well fluid flowing via the central opening 42, the intermediate pipe 38, the valve bore 28, the channel 34 and into the actuator volume 54. The surrounding fluid pressure thereby acts against the whole of the actuator piston 20 area. The force being set up breaks the piston break pins 60 whereby the actuator piston 20 is displaced towards the coupling 8 and at the same time pulling the working piston 36 with it; see Fig. 4.
The fluid in the flushing liquid chamber 56 is displaced and flows out via the inflow openings 50 and the jet pods 46 against the object to be cleaned at the same time as material flows into the collection volume 58 via the central opening 42 and the check valve 44.
When the pistons 20, 36 are displaced to their full stroke length, the check valve 44 closes, where after the cleaning tool can be displaced to the surface. As the pressure falls, the gas in the gas volume 52 flows out through a relief valve 62.

Claims

P a t e n t c l a i m s
1. A cleaning tool (1) for use in a borehole where the cleaning tool (1) comprises a collection volume (58) , c ha r a c t e r i s e d i n that an actuator (25)
5 in the cleaning tool (1) is disposed to be able to reduce a flushing liquid volume (56) being in the cleaning tool (1) , as a discharging flushing liquid from the flushing liquid volume (56) is led through a jet pod (46) and directed towards the object to be io cleaned.
2. A cleaning tool (1) according to claim 1, c h a r a c t e r i s e d i n that the actuator (25) is disposed to be able to cause the collection volume (58) to increase, as the collection volume (58) communi- i5 cates with the surroundings at the outlet from the jet pods (46) .
3. A cleaning tool (1) according to claim 1, c h a r a c t e r i s e d i n that the actuator (25) is disposed to be able to be driven by a fluid pressure sur-
20 rounding the cleaning tool .
4. A cleaning tool (1) according to claim 1, c h a r a c t e r i s e d i n that the flushing liquid volume (56) and the collection volume (58) are on opposite sides of a working piston (36) in a work chamber
25 housing (6) .
5. A cleaning tool (1) according to claim 4, c ha r a c t e r i s e d i n that the working piston (36) is connected to an actuator piston (20) in an actuator housing (4) .
6. A cleaning tool (1) according to claim 5, c h a r a c t e r i s e d i n that an intermediate pipe (38) connects the working piston (36) to the actuator piston (20) , as the intermediate pipe runs sealingly through an intermediate housing (2) .
7. A cleaning tool (1) according to claim 6, c h a r a c t e r i s e d i n that a valve body (26) , which is disposed to be able to be activated by the fluid pressure surrounding the cleaning tool (1) , opens for fluid inflow to an actuator volume (54) when activated.
8. A cleaning tool (1) according to claim 7, c h a r a c t e r i s e d i n that the valve body (26) communicates with the surrounding fluid pressure via the intermediate pipe (38) .
PCT/NO2009/000062 2008-02-28 2009-02-25 Cleaning tool WO2009116869A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20081047A NO330997B1 (en) 2008-02-28 2008-02-28 Device by cleaning tool
NO20081047 2008-02-28

Publications (2)

Publication Number Publication Date
WO2009116869A2 true WO2009116869A2 (en) 2009-09-24
WO2009116869A3 WO2009116869A3 (en) 2009-11-12

Family

ID=40983300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2009/000062 WO2009116869A2 (en) 2008-02-28 2009-02-25 Cleaning tool

Country Status (2)

Country Link
NO (1) NO330997B1 (en)
WO (1) WO2009116869A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2550119C1 (en) * 2014-04-01 2015-05-10 Сергей Анатольевич Паросоченко Hydraulic impact device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO338448B1 (en) * 2011-11-14 2016-08-15 Altus Intervention As Apparatus for collection of production waste in a wellbore and method for retrieving the apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2331312A9 (en) * 1997-11-17 1900-01-01 James Victor Carisella Hydrostatic slow actuating subterranean well tool manipulation device and method
US3120872A (en) * 1960-02-19 1964-02-11 Edwin A Anderson Junk retriever
US3674091A (en) * 1970-06-03 1972-07-04 Schlumberger Technology Corp Methods and apparatus for completing production wells
US4505341A (en) * 1982-03-16 1985-03-19 Moody Arlin R Combination clean-out and drilling tool

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Publication number Priority date Publication date Assignee Title
US4421182A (en) * 1982-03-16 1983-12-20 Moody Arlin R Combination clean-out and drilling tool
US4799554A (en) * 1987-04-10 1989-01-24 Otis Engineering Corporation Pressure actuated cleaning tool
US5135050A (en) * 1991-04-23 1992-08-04 Den Norske Stats Oljeselskap A.S. Device for collecting particulate matter and debris in horizontal or high-deviation oil or gas wells
NO306027B1 (en) * 1997-10-27 1999-09-06 Testtech Services As Apparatus for removing sand in an underwater well
GB9920970D0 (en) * 1999-09-06 1999-11-10 Astec Dev Ltd Casing/pipeline cleaning tool
GB0108539D0 (en) * 2001-04-05 2001-05-23 Hamdeen Ltd Apparatus and method for collecting debris in a well bore
GB0207563D0 (en) * 2002-04-02 2002-05-15 Sps Afos Group Ltd Junk removal tool
GB0207851D0 (en) * 2002-04-05 2002-05-15 Sps Afos Group Ltd Stabiliser jetting and circulating tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120872A (en) * 1960-02-19 1964-02-11 Edwin A Anderson Junk retriever
US3674091A (en) * 1970-06-03 1972-07-04 Schlumberger Technology Corp Methods and apparatus for completing production wells
US4505341A (en) * 1982-03-16 1985-03-19 Moody Arlin R Combination clean-out and drilling tool
GB2331312A9 (en) * 1997-11-17 1900-01-01 James Victor Carisella Hydrostatic slow actuating subterranean well tool manipulation device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2550119C1 (en) * 2014-04-01 2015-05-10 Сергей Анатольевич Паросоченко Hydraulic impact device

Also Published As

Publication number Publication date
WO2009116869A3 (en) 2009-11-12
NO20081047L (en) 2009-08-31
NO330997B1 (en) 2011-09-05

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