RU2188970C1 - Downhole jet plant - Google Patents

Downhole jet plant Download PDF

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Publication number
RU2188970C1
RU2188970C1 RU2001108895A RU2001108895A RU2188970C1 RU 2188970 C1 RU2188970 C1 RU 2188970C1 RU 2001108895 A RU2001108895 A RU 2001108895A RU 2001108895 A RU2001108895 A RU 2001108895A RU 2188970 C1 RU2188970 C1 RU 2188970C1
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RU
Russia
Prior art keywords
jet pump
channel
medium
diameter
pumped
Prior art date
Application number
RU2001108895A
Other languages
Russian (ru)
Inventor
Зиновий Дмитриевич Хоминец
Original Assignee
Зиновий Дмитриевич Хоминец
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 Зиновий Дмитриевич Хоминец filed Critical Зиновий Дмитриевич Хоминец
Priority to RU2001108895A priority Critical patent/RU2188970C1/en
Application granted granted Critical
Publication of RU2188970C1 publication Critical patent/RU2188970C1/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/08Wipers; Oil savers
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121Lifting well fluids
    • E21B43/124Adaptation of jet-pump systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46Arrangements of nozzles
    • F04F5/464Arrangements of nozzles with inversion of the direction of flow

Abstract

FIELD: oil recovery from wells. SUBSTANCE: downhole jet plant has packer, pipe string with support in which bypass windows are made, jet pump installed in casing on said support. Casing accommodates channel for supply of active medium to jet pump nozzle, channel for supply of medium pumped out of well, and channel for withdrawal of media mixture from jet pump. Installed in casing above channel for supply of pumped out medium and connected with it is conveying channel with mounting place for installation of sealing unit. Sealing unit has axial channel for passage of cable through said channel and channel of supply of pumped-out medium. Cable is used for installation with its help of instruments and other equipment in well below jet pump for their motion along wellbore with operating or idling jet pump. Channel for supply of active medium to nozzle of jet pump is communicated with bypass windows and through them with space surrounding pipe string. Channel for withdrawal of media mixture from jet pump is communicated with interval cavity of pipes above jet pump. Conveying channel accommodates appliance for supply to well and withdrawal from it of casing with jet pump. Appliance shuts off the conveying channel. Lower part of jet pump casing has a hole with thread for connection with autonomous measuring instrument. Outer diameter D of jet pump casing is less than minimum inner diameter D1 of pipe string at least by 1.0 mm. Diameter D2 of axial channel of sealing unit is larger than cable diameter D3 at least by 0.01 mm. Diameter D4 of channel for supply of pumped out medium is larger than cable diameter D3 at least by 2 mm. Installed on jet pump casing are packing rings and fixing mechanism. EFFECT: higher reliability. 2 dwg

Description

 The invention relates to the field of pumping technology, mainly to downhole pumping units for oil production from wells.

 A well-known jet installation including a jet pump installed in a well on a tubing string and a geophysical device located below the jet pump in a tubing string (see RU 2059891 C1, F 04 F 5/02, 05/10/1996).

 This installation allows pumping various produced media, such as oil, from the well while processing the produced medium and the near-wellbore zone of the formation, however, this installation provides for the supply of the working medium to the nozzle of the jet apparatus through a pipe string, which in some cases narrows the scope of use of this installation.

 The closest to the invention in technical essence and the achieved result is a downhole jet installation containing a packer, a pipe string with a support, in which bypass windows are made and on which the jet pump is installed in the housing, while the channel for supplying the active medium to the jet pump nozzle is made in the housing , a channel for supplying a medium pumped out from the well to the jet pump and a channel for discharging a mixture of media from the jet pump, and a channel communicated with the last passage channel is made in the housing above the channel for supplying the pumped medium a seat for the installation of the sealing unit, and in the sealing unit, an axial channel is made with the possibility of passing through it and the channel for supplying a pumped medium of the cable for installation of devices and equipment on it in the well below the jet pump with the possibility of moving them along the wellbore with the jet working or not working pump (see RU, patent 2143597, IPC 6 F 04 F 5/02, 12/27/1999).

 This jet installation allows for various technological operations in the well below the installation level of the jet pump, including by reducing the pressure drop above and below the sealing unit. However, this installation does not allow to fully use its capabilities, which is associated with non-optimal size ratios of various structural elements of the downhole jet installation and the location of the jet pump in the housing which is not optimal for a number of tasks.

 The problem to which the present invention is directed, is to optimize the location and size of various structural elements of the installation and thereby increase the reliability of the downhole jet installation.

This problem is solved due to the fact that the downhole jet installation contains a packer, a pipe string with a support, in which overflow windows are made and on which the jet pump is installed in the housing, while the active medium supply channel to the jet pump nozzle and the supply channel to the jet pump of the medium pumped out from the well and the channel for withdrawing the mixture of media from the jet pump, and in the housing above the channel for supplying the pumped medium, the passage channel communicated with the last is made with a seat for installing the sealing unit , and in the sealing unit, an axial channel is made with the possibility of passing through it and the channel for supplying the pumped-out medium of the cable for installing devices and equipment on it in the well below the jet pump with the possibility of moving them along the wellbore with the jet pump working or not working, and the feed channel is active the medium into the nozzle of the jet pump is in communication with the bypass windows and through the latter with the space surrounding the pipe string, the channel for discharging the mixture of media from the jet pump is communicated with an internal cavity of the pipe above a pump, the passage channel is made with the possibility of installing in it, with the passage channel blocked, a device for delivering to the well and removing from it a body with a jet pump, and a hole with a thread is made in the lower part of the body of the jet pump for connecting autonomous measuring equipment to the body, wherein the outer diameter of the jet pump housing (D) is not less than 1.0 mm smaller than the smallest inner diameter (D 1) of the tubing diameter (D 2) of the axial passage of the sealing assembly is not less than 0.01 mm bol Chez diameter (D 3) of the cable, and the diameter (D 4) for supplying pumped medium channel at least 2 mm larger than the diameter D 3 of the cable, and on jet pump body installed sealing ring and the locking mechanism.

 Analysis of the operation of a downhole jet installation showed that the reliability of the installation can be improved by a more optimal location in the housing of the jet pump and the implementation of various structural elements of the installation with strictly defined dimensions. In particular, it was found that the diameter of the channel for supplying a pumped medium cannot be arbitrarily selected. This is due to the fact that an excessively large diameter of the channels leads to a decrease in the strength of the installation, and an excessively small diameter of these channels leads to a decrease in the productivity of the jet pump. In this regard, it was found that the implementation of the diameter of the channel for supplying the pumped-out medium is not less than 2 mm larger than the diameter of the cable allows to let the maximum possible amount of medium pumped out of the well with minimal hydraulic losses into the jet pump. As for the upper limit, it is determined by the strength characteristics of the design of the jet pump and, first of all, the housing of the jet pump. In each case, this value is determined individually. During the operation of the installation, a study of various well conditions is carried out. It is necessary to install and remove the housing with the jet pump in the pipe string. It was found that it is advisable to carry out the diameter of the jet pump body not less than 1.0 mm less than the smallest inner diameter of the pipe string, moreover, o-rings and a mechanism are installed on the jet pump body, which fixes the position of the jet pump body in the well relative to the support. As a result, possible jamming of the body in the pipe string is prevented and the medium is prevented from flowing from the space above the body into the sub-packer space of the well. As indicated above, during the operation of the installation, it is necessary to move instruments and equipment along the well along the cable and at the same time it is necessary to minimize the flow of medium through the axial channel of the sealing unit. This was achieved when the diameter of the axial channel in the sealing assembly was not less than 0.01 mm larger than the diameter of the cable on which the instruments and equipment are installed. The execution of a threaded hole in the lower part of the jet pump housing makes it possible to install various autonomously working measuring equipment on the housing, and due to this, it is possible to expand the range of studies conducted in the well.

 Thus, the achievement of the objective of the invention has been achieved - optimizing the location and size of various structural elements of the installation and thereby increasing the reliability of the downhole jet installation.

 Figure 1 shows a longitudinal section of a downhole jet unit; 2 shows a longitudinal section of a well jet device with a device for delivering and removing a body with a jet pump from the well instead of the sealing assembly.

The downhole jet installation comprises a packer 1, a pipe string 2 with a support 3, in which bypass windows 4 are made and on which a jet pump 6 is mounted in the housing 5, while in the housing 5 a channel 7 for supplying an active medium to the nozzle 8 connected with the bypass windows 4 is made the jet pump 6 from the space surrounding the pipe string 2, the channel 9 for supplying the fluid pumped from the well to the jet pump 6 and the channel 10 for discharging the mixture of media from the jet pump 6 into the internal cavity of the pipes 2 above the jet pump 6, and in the housing 5 above the channel 9 for pumping wed The passage channel 11 connected with it was made with a seat 12 for installing the sealing unit 13, and in the sealing unit 13 the axial channel 14 was made with the possibility of passing through it and the channel 9 for supplying the pumped medium of the cable 15 for installation on it in the well below the jet pump 6 instruments and equipment 16 with the possibility of moving them along the wellbore with a working or not working jet pump 6. The passage channel 11 is configured to install, with the passage channel 11 blocked, the device 17 for delivery to the importance and removing from it the housing 5 with the jet pump 6, and in the lower part of the housing 5 of the jet pump 6 a hole 18 is made with a thread for connecting to the housing 5 of the autonomous measuring equipment 21, while the outer diameter of the housing 5 of the jet pump 6 (D) is not less less than 1.0 mm less than the smallest inner diameter (D 1 ) of the pipe string 2, the diameter (D 2 ) of the axial channel 14 of the sealing assembly 13 is no less than 0.01 mm larger than the diameter (D 3 ) of the cable 15, and the diameter (D 4 ) channel 9 for supplying a pumped-out medium is not less than 2 mm larger than the diameter (D 3 ) of cable 15 moreover, on the housing 5 of the jet pump 6, the sealing rings 19 and the locking mechanism 20 are installed.

 A pipe string 2 with packer 1 and support 3 is lowered into the well and packer 1 is placed above the reservoir. The packer 1 is brought into working position, separating the space of the well surrounding the pipe string 2. On cable 15, the housing 5 with the jet pump 6 and the sealing assembly 13 and the devices and equipment located below the housing 6 on the cable 15 are lowered into the pipe string 2. The housing 5 is fixed in the support 3 with the jet pump 6 by means of a fixing mechanism 20. A medium, for example, water, saline, oil, etc. is pumped into the surrounding pipe string 2, from the annular space, the working medium enters through the openings 4 and channel 7 into the active nozzle 8 of the jet pump 6. Within a few seconds after pumping the working medium through the active nozzle 8, a stable jet is formed at the outlet of it, which, flowing out of the nozzle 8, entrains its environment into the jet pump 6, which causes a decrease in first, in the channel 9 for supplying the pumped-out medium, and then in the sub-packer space of the well, creating a depression on the reservoir. The magnitude of the pressure reduction depends on the speed of the working fluid passing through the active nozzle 8, which in turn depends on the magnitude of the pressure of the working fluid injection into the annulus of the well above the packer 1. As a result, the formation medium flows through the pipe string 2 and through the channel 9 into the jet pump 6 where it mixes with the working medium, and the mixture of media due to the energy of the working medium through the pipe string 2 comes from the well to the surface. During pumping out of the formation medium with the help of equipment and instruments 16 installed on the cable 15, the parameters of the pumped out formation medium are monitored, as well as the effect of physical fields on the reservoir. Depending on the problem being solved, it is possible to move instruments and equipment 16 along the well. If there is no need to install 6 devices and equipment 16 on the cable 15 below the housing 5 of the jet pump, a device 17 is installed in the passageway 11 instead of the sealing assembly 13 and, using it, the housing 2 is installed and removed from the pipe string 2 with the jet pump 6 and stand-alone measuring equipment 21, if the latter was installed on the housing 5.

 The invention can find application in the testing, development and operation of oil and gas condensate wells, as well as in their overhaul.

Claims (1)

  1. A downhole jet installation comprising a packer, a pipe string with a support, in which overflow windows are made and on which a jet pump is installed in the housing, while the housing has a channel for supplying the active medium to the nozzle of the jet pump, a channel for supplying the medium pumped out of the well to the jet pump and a channel for discharging a mixture of media from a jet pump, and in a housing above a channel for supplying a pumped-out medium, a channel connected with the last through passage with a seat for installing a sealing unit is made, and in the sealing unit, axial anal with the possibility of passing through it and the channel for supplying a pumped medium of the cable for installation on it in the well below the jet pump of instruments and equipment with the ability to move them along the wellbore with a working or idle jet pump, characterized in that the channel for supplying the active medium to the nozzle of the jet pump communicated with the bypass windows and through the latter with the space surrounding the pipe string, the channel for discharging the mixture of media from the jet pump is communicated with the internal cavity of the pipes above the jet pump, passing through The pipe was made with the possibility of installing in it, with the passage channel blocked, a device for delivering to the well and removing from it a body with a jet pump, and a hole with a thread was made in the lower part of the body of the jet pump for connecting autonomous measuring equipment to the body, while the outer diameter the jet pump housing (D) is not less than 1.0 mm smaller than the smallest inner diameter (D 1 ) of the pipe string, the diameter (D 2 ) of the axial channel of the sealing assembly is not less than 0.01 mm larger than the diameter (D 3 ) of the cable, a di the meter (D 4 ) of the supply channel for the pumped-out medium is not less than 2 mm larger than the diameter (D 3 ) of the cable, moreover, o-rings and a locking mechanism are installed on the body of the jet pump.
RU2001108895A 2001-04-05 2001-04-05 Downhole jet plant RU2188970C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2001108895A RU2188970C1 (en) 2001-04-05 2001-04-05 Downhole jet plant

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
RU2001108895A RU2188970C1 (en) 2001-04-05 2001-04-05 Downhole jet plant
EA200300757A EA004564B1 (en) 2001-04-05 2002-03-20 Well jet device
UA2003065877A UA73396C2 (en) 2001-04-05 2002-03-20 Well jet unit
CA 2438877 CA2438877C (en) 2001-04-05 2002-03-20 Well jet device
CN 02807771 CN1279287C (en) 2001-04-05 2002-03-20 Well jet device
US10/468,672 US20040071557A1 (en) 2001-04-05 2002-03-20 Well jet device
PCT/RU2002/000104 WO2002081928A1 (en) 2001-04-05 2002-03-20 Well jet device

Publications (1)

Publication Number Publication Date
RU2188970C1 true RU2188970C1 (en) 2002-09-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001108895A RU2188970C1 (en) 2001-04-05 2001-04-05 Downhole jet plant

Country Status (7)

Country Link
US (1) US20040071557A1 (en)
CN (1) CN1279287C (en)
CA (1) CA2438877C (en)
EA (1) EA004564B1 (en)
RU (1) RU2188970C1 (en)
UA (1) UA73396C2 (en)
WO (1) WO2002081928A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008054241A1 (en) * 2006-10-30 2008-05-08 Zinoviy Dmitrievich Khomynets Well jet device for weel-logging operations
WO2008127148A1 (en) * 2007-04-12 2008-10-23 Zinoviy Dmitrievich Khomynets Well jet device
WO2010014029A1 (en) * 2008-07-29 2010-02-04 Khomynetz Zinoviy Dmitrievich Well jet device
US8322445B2 (en) 2007-07-18 2012-12-04 Zinoviy Dmitrievich Khomynets Well jet device

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2239729C1 (en) * 2003-11-20 2004-11-10 Зиновий Дмитриевич Хоминец Oil-well jet plant and method of its operation when logging horizontal wells
RU2287095C1 (en) * 2005-09-20 2006-11-10 Зиновий Дмитриевич Хоминец Jet well installation and method of its operation
RU2287723C1 (en) * 2005-11-25 2006-11-20 Зиновий Дмитриевич Хоминец Jet well pump installation
RU2289042C1 (en) * 2005-11-25 2006-12-10 Зиновий Дмитриевич Хоминец Well fluid plant and method for operation thereof
RU2303171C1 (en) * 2006-03-22 2007-07-20 Зиновий Дмитриевич Хоминец Well jet plant for logging operations and method for operating the same
RU2303172C1 (en) * 2006-03-22 2007-07-20 Зиновий Дмитриевич Хоминец Well jet plant and its operation method
RU2307959C1 (en) * 2006-05-02 2007-10-10 Зиновий Дмитриевич Хоминец Method of operation of jet plant at completion and operation of oil and gas wells
RU2315208C1 (en) * 2006-09-07 2008-01-20 Зиновий Дмитриевич Хоминец Oil-well jet plant for logging operations at abnormally low formation pressure and method of its operation
RU2320900C1 (en) * 2006-11-09 2008-03-27 Зиновий Дмитриевич Хоминец Oil well jet plant
RU2320899C1 (en) * 2006-11-09 2008-03-27 Зиновий Дмитриевич Хоминец Oil well jet plant
RU2329409C1 (en) * 2007-04-12 2008-07-20 Зиновий Дмитриевич Хоминец Well-deep jet unit for hydraulic formation fracturing and well analysis
RU2334130C1 (en) * 2007-07-09 2008-09-20 Зиновий Дмитриевич Хоминец Well jet unit "эмпи-угис-(11-20)дш" and method of its operation
US8863827B2 (en) 2009-03-10 2014-10-21 1497690 Alberta Ltd. Jet pump for use with a multi-string tubing system and method of using the same for well clean out and testing
CA2763502C (en) 2009-05-26 2019-04-02 Kelvin Falk Jet pump and multi-string tubing system for a fluid production system and method
CA2877194C (en) 2011-07-06 2020-01-21 Source Rock Energy Partners Inc. Jet pump data tool system
US8757863B2 (en) 2012-05-01 2014-06-24 Cree, Inc. Solid state lighting apparatus with electrical connectors including portions of driver circuits
DE102013003445A1 (en) * 2013-02-26 2014-09-11 Eagleburgmann Germany Gmbh & Co. Kg Borehole conveyor
CN106640587A (en) * 2016-11-18 2017-05-10 冯旭辉 Double-tube pump
US10450813B2 (en) 2017-08-25 2019-10-22 Salavat Anatolyevich Kuzyaev Hydraulic fraction down-hole system with circulation port and jet pump for removal of residual fracking fluid

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293283A (en) * 1977-06-06 1981-10-06 Roeder George K Jet with variable throat areas using a deflector
US4605069A (en) * 1984-10-09 1986-08-12 Conoco Inc. Method for producing heavy, viscous crude oil
US4744730A (en) * 1986-03-27 1988-05-17 Roeder George K Downhole jet pump with multiple nozzles axially aligned with venturi for producing fluid from boreholes
RU2059891C1 (en) * 1989-06-14 1996-05-10 Зиновий Дмитриевич Хоминец Borehole jet set
RU2121610C1 (en) * 1997-04-08 1998-11-10 Зиновий Дмитриевич Хоминец Well jet plant
GB2342670B (en) * 1998-09-28 2003-03-26 Camco Int High gas/liquid ratio electric submergible pumping system utilizing a jet pump
RU2143597C1 (en) * 1998-12-15 1999-12-27 Зиновий Дмитриевич Хоминец Well jet plant (versions)
NZ517176A (en) * 1999-09-15 2003-01-31 Shell Int Research System for enhancing fluid flow in a well with flow boosters retrievably mounted in side pockets of production tubing
US6962197B2 (en) * 2000-10-25 2005-11-08 Zinoviy Dmitrievich Khomynets Bore-hole-jet device for formation testing and a prestarting procedure for said device
CA2339684A1 (en) * 2001-03-02 2001-06-05 Leonard Larry Erick Downhole jet pump
RU2188342C1 (en) * 2001-05-21 2002-08-27 Зиновий Дмитриевич Хоминец Method of operation of well jet plant at testing and completion of wells, and well jet plant
RU2190779C1 (en) * 2001-07-09 2002-10-10 Зиновий Дмитриевич Хоминец Oil-well jet plant for testing and completion of oil wells and method of plant operation
EA005104B1 (en) * 2001-07-31 2004-10-28 Зиновий Дмитриевич ХОМИНЕЦ Method for operating a well jet device during repair and insulating operations and device for carrying out said method
RU2190781C1 (en) * 2001-07-31 2002-10-10 Зиновий Дмитриевич Хоминец Oil-well jet plant for testing and completion of oil wells and method of plant operation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008054241A1 (en) * 2006-10-30 2008-05-08 Zinoviy Dmitrievich Khomynets Well jet device for weel-logging operations
WO2008127148A1 (en) * 2007-04-12 2008-10-23 Zinoviy Dmitrievich Khomynets Well jet device
US7806174B2 (en) 2007-04-12 2010-10-05 Zinoviy Dmitrievich Khomynets Well jet device
US8322445B2 (en) 2007-07-18 2012-12-04 Zinoviy Dmitrievich Khomynets Well jet device
WO2010014029A1 (en) * 2008-07-29 2010-02-04 Khomynetz Zinoviy Dmitrievich Well jet device

Also Published As

Publication number Publication date
CA2438877C (en) 2007-04-24
CA2438877A1 (en) 2002-10-17
EA200300757A1 (en) 2003-12-25
US20040071557A1 (en) 2004-04-15
CN1279287C (en) 2006-10-11
CN1500185A (en) 2004-05-26
EA004564B1 (en) 2004-06-24
UA73396C2 (en) 2004-03-15
WO2002081928A1 (en) 2002-10-17

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Effective date: 20100406