WO2009029653A1 - Process for removing silica in heavy oil recovery - Google Patents
Process for removing silica in heavy oil recovery Download PDFInfo
- Publication number
- WO2009029653A1 WO2009029653A1 PCT/US2008/074442 US2008074442W WO2009029653A1 WO 2009029653 A1 WO2009029653 A1 WO 2009029653A1 US 2008074442 W US2008074442 W US 2008074442W WO 2009029653 A1 WO2009029653 A1 WO 2009029653A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stream
- brine
- concentrated
- produced water
- evaporator
- Prior art date
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 109
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 73
- 230000008569 process Effects 0.000 title claims abstract description 70
- 238000011084 recovery Methods 0.000 title abstract description 28
- 239000000295 fuel oil Substances 0.000 title description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 142
- 239000012267 brine Substances 0.000 claims abstract description 106
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 106
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 239000003129 oil well Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 45
- 239000012528 membrane Substances 0.000 claims description 44
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 32
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000919 ceramic Substances 0.000 claims description 25
- 239000000395 magnesium oxide Substances 0.000 claims description 25
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 22
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 18
- 239000000347 magnesium hydroxide Substances 0.000 claims description 18
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 18
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 16
- 239000011777 magnesium Substances 0.000 claims description 15
- 230000003134 recirculating effect Effects 0.000 claims description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000012466 permeate Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims 6
- 238000001914 filtration Methods 0.000 claims 2
- 238000000975 co-precipitation Methods 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 45
- 235000019198 oils Nutrition 0.000 description 45
- 238000001179 sorption measurement Methods 0.000 description 34
- 239000002002 slurry Substances 0.000 description 28
- 238000002425 crystallisation Methods 0.000 description 26
- 230000008025 crystallization Effects 0.000 description 26
- 230000008020 evaporation Effects 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 15
- 239000013078 crystal Substances 0.000 description 14
- 239000012141 concentrate Substances 0.000 description 13
- 238000005755 formation reaction Methods 0.000 description 13
- 238000012546 transfer Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 239000000243 solution Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 235000019476 oil-water mixture Nutrition 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 5
- 239000011552 falling film Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000003518 caustics Substances 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 241001507939 Cormus domestica Species 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 150000002736 metal compounds Chemical class 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 metal oxide compounds Chemical class 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200880113363.9A CN101835954B (en) | 2007-08-27 | 2008-08-27 | Process for removing silica in heavy oil recovery |
BRPI0815845-2A BRPI0815845B1 (en) | 2007-08-27 | 2008-08-27 | METHOD FOR RECOVERING OIL FROM AN OIL WELL. |
RU2010111793/03A RU2479713C2 (en) | 2007-08-27 | 2008-08-27 | Method for removing silicon oxide at extraction of heavy oil (versions) |
CA2640421A CA2640421C (en) | 2008-08-27 | 2008-10-06 | Process for removing silica in heavy oil recovery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96818007P | 2007-08-27 | 2007-08-27 | |
US60/968,180 | 2007-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009029653A1 true WO2009029653A1 (en) | 2009-03-05 |
Family
ID=40387762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/074442 WO2009029653A1 (en) | 2007-08-27 | 2008-08-27 | Process for removing silica in heavy oil recovery |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN101835954B (en) |
BR (1) | BRPI0815845B1 (en) |
RU (1) | RU2479713C2 (en) |
WO (1) | WO2009029653A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011083421A1 (en) | 2010-01-06 | 2011-07-14 | Total S.A. | Method for treating water and producing steam and steam-production facility |
WO2013142764A3 (en) * | 2012-03-22 | 2014-07-24 | E. I. Du Pont De Nemours And Company | Produced water treatment in oil recovery |
GB2510159A (en) * | 2013-01-27 | 2014-07-30 | Ide Technologies Ltd | Evaporator array for a water treatment system |
WO2016025195A1 (en) * | 2014-08-13 | 2016-02-18 | Veolia Water Technologies, Inc. | Method and apparatus of flash-cooling produced water and heating steam generator feedwater |
WO2017180548A1 (en) * | 2016-04-14 | 2017-10-19 | Veolia Water Technologies, Inc. | Process for treating produced water with magnesium oxide |
US10221670B2 (en) | 2012-09-13 | 2019-03-05 | Bl Technologies, Inc. | Treatment of produced water with seeded evaporator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2860277C (en) * | 2014-06-02 | 2016-10-25 | Veolia Water Solutions & Technologies North America, Inc. | Oil recovery process including enhanced softening of produced water |
CN107032515A (en) * | 2016-02-04 | 2017-08-11 | 通用电气公司 | Technique and system for preparing the method and apparatus of steam and oil recovery comprising it from output current |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3193009A (en) * | 1963-02-28 | 1965-07-06 | Shell Oil Co | Use of low-grade steam containing dissolved salts in an oil production method |
US4663367A (en) * | 1984-08-30 | 1987-05-05 | The Borden Company Limited | Compositions and methods for reducing the permeability of underground strata |
US4877536A (en) * | 1981-04-23 | 1989-10-31 | Bertness Enterprises, Inc. | Method of treating saline water |
US5611931A (en) * | 1995-07-31 | 1997-03-18 | Media And Process Technology Inc. | High temperature fluid separations using ceramic membrane device |
US6165553A (en) * | 1998-08-26 | 2000-12-26 | Praxair Technology, Inc. | Method of fabricating ceramic membranes |
US6401819B1 (en) * | 1997-07-23 | 2002-06-11 | Cleansorb Limited | Methods for deposition of materials in underground reservoirs |
US6536523B1 (en) * | 1997-01-14 | 2003-03-25 | Aqua Pure Ventures Inc. | Water treatment process for thermal heavy oil recovery |
US6734144B2 (en) * | 2000-04-25 | 2004-05-11 | Exxonmobil Upstream Research Company | Solids-stabilized water-in-oil emulsion and method for using same |
US6733636B1 (en) * | 1999-05-07 | 2004-05-11 | Ionics, Inc. | Water treatment method for heavy oil production |
US6740141B2 (en) * | 2001-02-23 | 2004-05-25 | Intevep, S.A. | Method for removing H2S and CO2 from above ground hydrocarbon streams |
US7037434B2 (en) * | 2002-12-20 | 2006-05-02 | Exxonmobil Upstream Research Company | Integrated water treatment and flue gas desulfurization process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2215871C2 (en) * | 2001-05-03 | 2003-11-10 | Аква-Пьюэр Вентчерс Инк. | Method of removal of polluting impurities from incoming flow |
US20030127391A1 (en) * | 2001-07-26 | 2003-07-10 | Craft Frank S. | Method for treatment of circulating cooling water |
WO2005054746A2 (en) * | 2003-11-26 | 2005-06-16 | Aquatech International Corporation | Method for production of high pressure steam from produced water |
-
2008
- 2008-08-27 WO PCT/US2008/074442 patent/WO2009029653A1/en active Application Filing
- 2008-08-27 RU RU2010111793/03A patent/RU2479713C2/en active
- 2008-08-27 BR BRPI0815845-2A patent/BRPI0815845B1/en not_active IP Right Cessation
- 2008-08-27 CN CN200880113363.9A patent/CN101835954B/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3193009A (en) * | 1963-02-28 | 1965-07-06 | Shell Oil Co | Use of low-grade steam containing dissolved salts in an oil production method |
US4877536A (en) * | 1981-04-23 | 1989-10-31 | Bertness Enterprises, Inc. | Method of treating saline water |
US4663367A (en) * | 1984-08-30 | 1987-05-05 | The Borden Company Limited | Compositions and methods for reducing the permeability of underground strata |
US5611931A (en) * | 1995-07-31 | 1997-03-18 | Media And Process Technology Inc. | High temperature fluid separations using ceramic membrane device |
US6536523B1 (en) * | 1997-01-14 | 2003-03-25 | Aqua Pure Ventures Inc. | Water treatment process for thermal heavy oil recovery |
US6401819B1 (en) * | 1997-07-23 | 2002-06-11 | Cleansorb Limited | Methods for deposition of materials in underground reservoirs |
US6165553A (en) * | 1998-08-26 | 2000-12-26 | Praxair Technology, Inc. | Method of fabricating ceramic membranes |
US6733636B1 (en) * | 1999-05-07 | 2004-05-11 | Ionics, Inc. | Water treatment method for heavy oil production |
US6734144B2 (en) * | 2000-04-25 | 2004-05-11 | Exxonmobil Upstream Research Company | Solids-stabilized water-in-oil emulsion and method for using same |
US6740141B2 (en) * | 2001-02-23 | 2004-05-25 | Intevep, S.A. | Method for removing H2S and CO2 from above ground hydrocarbon streams |
US7037434B2 (en) * | 2002-12-20 | 2006-05-02 | Exxonmobil Upstream Research Company | Integrated water treatment and flue gas desulfurization process |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011083421A1 (en) | 2010-01-06 | 2011-07-14 | Total S.A. | Method for treating water and producing steam and steam-production facility |
WO2013142764A3 (en) * | 2012-03-22 | 2014-07-24 | E. I. Du Pont De Nemours And Company | Produced water treatment in oil recovery |
US10221670B2 (en) | 2012-09-13 | 2019-03-05 | Bl Technologies, Inc. | Treatment of produced water with seeded evaporator |
GB2510159A (en) * | 2013-01-27 | 2014-07-30 | Ide Technologies Ltd | Evaporator array for a water treatment system |
GB2510159B (en) * | 2013-01-27 | 2015-04-22 | Ide Technologies Ltd | Evaporator array for a water treatment system |
US9499413B2 (en) | 2013-01-27 | 2016-11-22 | I.D.E. Technologies Ltd. | Evaporator array for a water treatment system |
WO2016025195A1 (en) * | 2014-08-13 | 2016-02-18 | Veolia Water Technologies, Inc. | Method and apparatus of flash-cooling produced water and heating steam generator feedwater |
US9909401B2 (en) | 2014-08-13 | 2018-03-06 | Veolia Water Technologies, Inc. | Method of flash-cooling produced water and heating steam generator feedwater |
WO2017180548A1 (en) * | 2016-04-14 | 2017-10-19 | Veolia Water Technologies, Inc. | Process for treating produced water with magnesium oxide |
CN108883950A (en) * | 2016-04-14 | 2018-11-23 | 威立雅水处理技术公司 | With the method for magnesia processing recovered water |
US10807895B2 (en) | 2016-04-14 | 2020-10-20 | Veolia Water Technologies, Inc. | Process for treating produced water with magnesium oxide |
Also Published As
Publication number | Publication date |
---|---|
RU2010111793A (en) | 2011-10-10 |
CN101835954B (en) | 2013-07-31 |
CN101835954A (en) | 2010-09-15 |
BRPI0815845A2 (en) | 2015-02-24 |
BRPI0815845B1 (en) | 2018-06-12 |
RU2479713C2 (en) | 2013-04-20 |
BRPI0815845A8 (en) | 2015-12-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7905283B2 (en) | Process for removing silica in heavy oil recovery | |
US8047287B2 (en) | Process for recovering heavy oil utilizing one or more membranes | |
US7150320B2 (en) | Water treatment method for heavy oil production | |
US7681643B2 (en) | Treatment of brines for deep well injection | |
US7909098B2 (en) | Process for recovering heavy oil utilizing one or more membranes | |
US7077201B2 (en) | Water treatment method for heavy oil production | |
CA2307819C (en) | Water treatment method for heavy oil production | |
WO2009029653A1 (en) | Process for removing silica in heavy oil recovery | |
US10131561B2 (en) | Treatment of produced water concentrate | |
CA2818176C (en) | Method of recovering oil and producing produced water that is concentrated and dried by a double drum dryer | |
US9938813B2 (en) | Oil recovery process including enhanced softening of produced water | |
US20150368133A1 (en) | Process for treating waters produced or collected from the oil extraction in mining operations and reducing the tendency of calcium scaling of process equipment | |
CA2448680A1 (en) | Water treatment method for heavy oil production | |
US9127540B2 (en) | Method of recovering oil and producing produced water that is concentrated and dried by a double drum dryer | |
CA2928820C (en) | Process for treating produced water evaporator concentrate | |
CA2640421C (en) | Process for removing silica in heavy oil recovery | |
EA029252B1 (en) | Process for treating brine recovered from a coal seam gas operation | |
CA2567171C (en) | Treatment of brines for deep well injection | |
CN108883950A (en) | With the method for magnesia processing recovered water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880113363.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08798781 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010111793 Country of ref document: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08798781 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: PI0815845 Country of ref document: BR Kind code of ref document: A2 Effective date: 20100226 |