EP0886035B1 - Procédé de récupération assistée de fluids pétroliers dans un gisement souterrain - Google Patents
Procédé de récupération assistée de fluids pétroliers dans un gisement souterrain Download PDFInfo
- Publication number
- EP0886035B1 EP0886035B1 EP98401342A EP98401342A EP0886035B1 EP 0886035 B1 EP0886035 B1 EP 0886035B1 EP 98401342 A EP98401342 A EP 98401342A EP 98401342 A EP98401342 A EP 98401342A EP 0886035 B1 EP0886035 B1 EP 0886035B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- injection
- wetting fluid
- gas
- slugs
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 27
- 238000011084 recovery Methods 0.000 title claims description 19
- 229930195733 hydrocarbon Natural products 0.000 title claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 9
- 230000015572 biosynthetic process Effects 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000007789 gas Substances 0.000 claims description 31
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 23
- 238000009736 wetting Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229920006395 saturated elastomer Polymers 0.000 claims description 8
- 230000006911 nucleation Effects 0.000 claims description 6
- 238000010899 nucleation Methods 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000000654 additive Substances 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 2
- 238000010952 in-situ formation Methods 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims description 2
- 241000237858 Gastropoda Species 0.000 claims 7
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 239000000839 emulsion Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 241000195940 Bryophyta Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- -1 amines Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000004858 capillary barrier Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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
- 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
- E21B43/18—Repressuring or vacuum methods
-
- 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
- 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
-
- 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
- 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
- E21B43/164—Injecting CO2 or carbonated water
Definitions
- the present invention relates to an enhanced recovery method for petroleum fluids in an underground deposit making it possible to increase the efficiency of scanning and more particularly to improve a recovery technique.
- Recovery is said to be of primary type when using energy in if you.
- the expansion of the fluids initially under high pressure in the deposit allows to recover part of the oil in place. During this phase, the pressure in the deposit can drop below the bubble point and a gas phase appears, which helps increase the recovery rate.
- the principle consists in displacing petroleum fluids by an external energy supply to the deposit. Fluids are injected into the deposit through one or more wells injection and the displaced petroleum fluids (hereinafter referred to as "oil") are recovered by production wells.
- Water can be used as a displacement fluid but its efficiency is limited. A large part of the oil remains in place, in particular because its viscosity is often much stronger than that of water. The oil also often remains trapped by narrowing of the pores due to the high interfacial tension between them and water. As the deposit is often heterogeneous, the water easily sweeps the areas the most permeable, bypassing the others, resulting in a significant loss of recovery.
- the method according to the present invention makes it possible to move fluids tankers retained in the pores of a porous underground deposit. It has a pressure injection step by one or more injection wells successively, caps of fluids intended to move the hydrocarbons in the rock-reservoirs, and a stage of recovery, by one or more production wells, of displaced hydrocarbons.
- the injection step includes the successive injection plugs of the wetting liquid which have been saturated with a gas under soluble pressure in the said wetting liquid and gas caps intended to sweep the areas more permeable, and the production stage involves the release of the prevailing pressure in the deposit, so as to generate gas bubbles in situ by nucleation in the pores of less permeable areas (part of the matrix with the most pores small) and drive the oil out to the more permeable areas where they are moved by gas caps.
- part of the dissolved gas is released in the form of bubbles preferably on the irregular surface elements and therefore on the walls of the pores.
- the nucleation effect is more marked where the density of pore walls by volume unit is the largest i.e. in areas of lower permeability with smaller pores where the oil is the most difficult to remove.
- the wetting fluid is for example water, at least one plug of water injected being saturated with pressurized carbon dioxide for example or hydrogen sulfide.
- At least one of the liquid stoppers wetting agent injected during the injection step may include water with a substance capable of making the spreading coefficient of the drops negative hydrocarbons and for example alcohol. We can thus alternate the plugs of wetting liquid, some saturated with gas under pressure, others added with the said substance, others without any additives.
- At least one of the plugs wetting liquid injected during the injection step includes added water foaming agents or surfactants, so that the release of pressure in the deposit generates the in situ formation of mosses which greatly simplifies the implementation of this type of scanning.
- the bar is provided at its two opposite ends with two end pieces which have conventionally been connected to circuits for injection and drainage of water and oil.
- the bar was prepared by the following operations to bring it successively into a state of saturation with irreducible water Swi and residual saturation with oil Sor.
- water plugs are added injected with foaming agents or surfactants.
- the pressure drop caused after injection has the effect of foaming or emulsifying these additives, which allows to greatly simplify the problems generally posed by the injection of these additives.
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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
Mise en Swi | ||
VOLUME D'HUILE INJECTEE | VOLUME D'EAU RECUPERE | PRESSION D'INJECTION |
100 cm3/h | 75 cm3 | 22 kPa |
200 cm3/h | 82 cm3 | 28 kPa |
300 cm3/h | 85 cm3 | 35 kPa |
400 cm3/h | 88 cm3 | 40 kPa |
Volume d'huile en place = 88 cm3 ⇒ Swi = (110 - 88)/110 = 20% |
Mise en Sor | ||
VOLUME D'EAU INJECTEE | VOLUME D'HUILE RECUPEREE | PRESSION D'INJECTION |
200 cm3/h | 64 cm3 | 24 kPa |
400 cm3/h | 65 cm3 | 54 kPa |
volume mort Vm = 2 cm3 ⇒ Sor = (88-67)/110 = 21/110 = 19 % |
Claims (6)
- Procédé pour déplacer des hydrocarbures retenus dans les pores des roches-réservoirs d'un gisement souterrain comportant une étape d'injection sous pression par un ou plusieurs puits d'injection successivement, de bouchons de fluides destinés à déplacer les hydrocarbures dans les roches-réservoirs, et une étape de récupération, par un ou plusieurs puits de production, des hydrocarbures déplacés, caractérisé en ce que l'étape d'injection comporte l'injection successive de bouchons du liquide mouillant que l'on a saturés avec un gaz sous pression soluble dans ledit liquide mouillant et de bouchons gazeux destinés à balayer les zones plus perméables, et l'étape de production comporte le relâchement de la pression régnant dans le gisement, de manière à générer in situ des bulles de gaz par nucléation dans les pores des zones moins perméables et en chasser les hydrocarbures vers les zones plus perméables où ils sont balayés par les bouchons de gaz.
- Procédé selon la revendication 1, caractérisé en ce que le fluide mouillant est de l'eau, au moins un bouchon d'eau injectée étant saturé avec du dioxyde de carbone sous pression.
- Procédé selon la revendication 1, caractérisé en ce que le fluide mouillant est de l'eau, au moins un bouchon d'eau injectée étant saturé avec de l'hydrogène sulfuré.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que l'un au moins des bouchons de liquide mouillant injecté durant l'étape d'injection comporte de l'eau additionnée d'une substance propre à rendre négatif le coefficient d'étalement des gouttes d'hydrocarbures, par exemple de l'alcool.
- Procédé selon la revendication précédente, caractérisé en ce que l'un au moins des bouchons de liquide mouillant injecté durant l'étape d'injection comporte de l'eau sans additif.
- Procédé selon l'une des revendications précédentes, caractérisé en ce que l'un au moins des bouchons de liquide mouillant injecté durant l'étape d'injection comporte de l'eau additionnée d'agents moussants ou de tensio-actifs, de façon que le relâchement de la pression dans le gisement engendre la formation in situ de mousses ou d'émulsions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9707611 | 1997-06-17 | ||
FR9707611A FR2764632B1 (fr) | 1997-06-17 | 1997-06-17 | Procede de recuperation assistee de fluides petroliers dans un gisement souterrain |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0886035A2 EP0886035A2 (fr) | 1998-12-23 |
EP0886035A3 EP0886035A3 (fr) | 2001-09-26 |
EP0886035B1 true EP0886035B1 (fr) | 2004-09-08 |
Family
ID=9508158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98401342A Expired - Lifetime EP0886035B1 (fr) | 1997-06-17 | 1998-06-05 | Procédé de récupération assistée de fluids pétroliers dans un gisement souterrain |
Country Status (5)
Country | Link |
---|---|
US (1) | US6105672A (fr) |
EP (1) | EP0886035B1 (fr) |
CA (1) | CA2239759C (fr) |
FR (1) | FR2764632B1 (fr) |
NO (1) | NO323039B1 (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2792678B1 (fr) | 1999-04-23 | 2001-06-15 | Inst Francais Du Petrole | Procede de recuperation assistee d'hydrocarbures par injection combinee d'une phase aqueuse et de gaz au moins partiellement miscible a l'eau |
US7186673B2 (en) * | 2000-04-25 | 2007-03-06 | Exxonmobil Upstream Research Company | Stability enhanced water-in-oil emulsion and method for using same |
CA2470440A1 (fr) * | 2001-12-17 | 2003-07-17 | Exxonmobil Upstream Research Company | Emulsion huile dans eau stabilisee par des solides et procede de preparation correspondant |
US7338924B2 (en) | 2002-05-02 | 2008-03-04 | Exxonmobil Upstream Research Company | Oil-in-water-in-oil emulsion |
AU2003229032A1 (en) * | 2002-05-24 | 2003-12-12 | 3M Innovative Properties Company | Use of surface-modified nanoparticles for oil recovery |
US6988552B2 (en) * | 2003-06-19 | 2006-01-24 | Conocophillips Company | Liquid carbon dioxide cleaning of wellbores and near-wellbore areas |
CN101103176A (zh) * | 2004-04-13 | 2008-01-09 | 科里巴技术有限公司 | 用于改进采油的组合物和方法 |
US7628909B2 (en) * | 2004-09-27 | 2009-12-08 | Coriba Technologies, L.L.C. | Composition and process for the extraction of bitumen from oil sands |
US7678201B2 (en) * | 2005-07-22 | 2010-03-16 | Coriba Technologies, L.L.C. | Composition and process for the removal and recovery of hydrocarbons from substrates |
US8100178B2 (en) | 2005-12-22 | 2012-01-24 | Exxonmobil Upstream Research Company | Method of oil recovery using a foamy oil-external emulsion |
US8146654B2 (en) | 2006-08-23 | 2012-04-03 | Exxonmobil Upstream Research Company | Composition and method for using waxy oil-external emulsions to modify reservoir permeability profiles |
US20100025038A1 (en) * | 2007-01-19 | 2010-02-04 | Savu Patricia M | Methods of using stable hydrocarbon foams |
WO2008089391A1 (fr) * | 2007-01-19 | 2008-07-24 | 3M Innovative Properties Company | Agents tensioactifs fluorés et procédés d'utilisation de ceux-ci |
FR2927938B1 (fr) * | 2008-02-21 | 2012-03-30 | Inst Francais Du Petrole | Procede de recuperation d'hydrocarbures de gisement petrolier par injection d'une solution aqueuse |
EP2233689A1 (fr) * | 2009-03-27 | 2010-09-29 | Shell Internationale Research Maatschappij B.V. | Procédé intégré et système pour gas-lift acide et récupération d'huile améliorée utilisant le fond de gaz acide de l'invention |
CN103256030B (zh) * | 2013-05-13 | 2016-04-13 | 中国石油天然气股份有限公司 | 热水段塞、一管多注地面水气交替注入工艺 |
WO2016141455A1 (fr) * | 2015-03-12 | 2016-09-15 | Nexen Energy Ulc | Procédés d'adsorption par inversion de pression pour la production d'hydrocarbures lourds à partir d'un réservoir |
EP3458171A4 (fr) * | 2016-05-17 | 2020-08-05 | Nano Gas Technologies, Inc. | Procédés permettant d'influer sur la séparation |
US11193359B1 (en) * | 2017-09-12 | 2021-12-07 | NanoGas Technologies Inc. | Treatment of subterranean formations |
CN113685155B (zh) * | 2020-05-18 | 2023-05-26 | 中国石油天然气股份有限公司 | 一种同井注采提高采收率的增产方法 |
US20230112608A1 (en) | 2021-10-13 | 2023-04-13 | Disruptive Oil And Gas Technologies Corp | Nanobubble dispersions generated in electrochemically activated solutions |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3032101A (en) * | 1958-04-10 | 1962-05-01 | Pure Oil Co | Improved waterflooding process |
US3342256A (en) * | 1964-04-17 | 1967-09-19 | Union Oil Co | Method for recovering oil from subterranean formations |
US3529668A (en) * | 1968-07-24 | 1970-09-22 | Union Oil Co | Foam drive oil recovery process |
US3599717A (en) * | 1969-12-03 | 1971-08-17 | Mobil Oil Corp | Alternate flood process for recovering petroleum |
US3580335A (en) * | 1969-12-19 | 1971-05-25 | Texaco Inc | Oil recovery by a combination of solution gas drive and waterflooding |
US3893511A (en) * | 1971-06-09 | 1975-07-08 | Sun Oil Co | Foam recovery process |
US3800874A (en) * | 1973-01-22 | 1974-04-02 | Atlantic Richfield Co | High pressure gas-carbonated water miscible displacement process |
US4224992A (en) * | 1979-04-30 | 1980-09-30 | The United States Of America As Represented By The United States Department Of Energy | Method for enhanced oil recovery |
US4601337A (en) * | 1984-05-10 | 1986-07-22 | Shell Oil Company | Foam drive oil displacement with outflow pressure cycling |
US4683948A (en) * | 1986-05-23 | 1987-08-04 | Atlantic Richfield Company | Enhanced oil recovery process employing carbon dioxide |
US4856589A (en) * | 1988-08-30 | 1989-08-15 | Shell Oil Company | Gas flooding with dilute surfactant solutions |
US5465790A (en) | 1994-04-11 | 1995-11-14 | Marathon Oil Company | Enhanced oil recovery from heterogeneous reservoirs |
FR2735524B1 (fr) | 1995-06-13 | 1997-07-25 | Inst Francais Du Petrole | Methode de recuperation assistee de fluides petroliers dans un gisement souterrain |
FR2748472B1 (fr) | 1996-05-09 | 1998-06-26 | Inst Francais Du Petrole | Procede de fabrication d'un materiau poreux inhomogene |
-
1997
- 1997-06-17 FR FR9707611A patent/FR2764632B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-05 EP EP98401342A patent/EP0886035B1/fr not_active Expired - Lifetime
- 1998-06-16 CA CA002239759A patent/CA2239759C/fr not_active Expired - Fee Related
- 1998-06-16 NO NO19982769A patent/NO323039B1/no not_active IP Right Cessation
- 1998-06-17 US US09/098,497 patent/US6105672A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0886035A2 (fr) | 1998-12-23 |
EP0886035A3 (fr) | 2001-09-26 |
CA2239759A1 (fr) | 1998-12-17 |
FR2764632B1 (fr) | 2000-03-24 |
NO982769L (no) | 1998-12-18 |
CA2239759C (fr) | 2008-01-29 |
FR2764632A1 (fr) | 1998-12-18 |
NO982769D0 (no) | 1998-06-16 |
NO323039B1 (no) | 2006-12-27 |
US6105672A (en) | 2000-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0886035B1 (fr) | Procédé de récupération assistée de fluids pétroliers dans un gisement souterrain | |
EP1046780B1 (fr) | Procédé de récupération assistée d'hydrocarbures par injection combinée d'une phase aqueuse et de gaz au moins partiellement miscible à l'eau | |
CA2796663C (fr) | Systemes et procedes pour la production de petrole et/ou de gaz | |
BE1005868A3 (fr) | Emulsion bimodale d'huile telle que petrole brut dans l'eau et procede pour sa preparation. | |
FR2631380A1 (fr) | Procede de recuperation de petrole en utilisant une modification cyclique de la mouillabilite | |
FR2501779A1 (fr) | Procede d'extraction de petrole a l'aide de co2 adapte au reservoir | |
AU2005228173A1 (en) | Method for increasing the production of hydrocarbon liquids and gases | |
FR2666621A1 (fr) | Produit et procede pour la diversion d'acide dans le traitement de formations souterraines. | |
FR2735524A1 (fr) | Methode de recuperation assistee de fluides petroliers dans un gisement souterrain | |
FR2474558A1 (fr) | Procede ameliore consolidation de formations geologiques | |
FR2609751A1 (fr) | Utilisation de mousses a base de tensioactifs a groupement perfluore pour ameliorer le balayage au gaz d'une formation petroliere | |
CA1155645A (fr) | Procede de consolidation de formations geologiques | |
WO2009144390A1 (fr) | Méthode de contrôle de l'intégrité d'un stockage géologique contenant du co2 | |
EP1414742B1 (fr) | Procede de decomposition du peroxyde d'hydrogene sous pression et dispositif pour rechauffer un equipement | |
EP0188971B1 (fr) | Procédé de consolidation d'une formation géologique par polymérisation thermique | |
FR2642468A1 (fr) | Systemes en mousse pour le colmatage selectif de formations souterraines, notamment autour de puits petroliers | |
FR2689562A1 (fr) | Procédé et solution polymérisable adaptés à la mise en place de bouchon dans un puits, application au colmatage des parois. | |
FR2602540A1 (fr) | Procede utilisant une mousse preformee compatible avec le petrole et la saumure pour la recuperation du petrole assistee par un gaz miscible | |
FR2663677A1 (fr) | Procede de consolidation d'une formation geologique par une substance polymerisable a la temperature et a la pression de la formation. | |
FR2571425A1 (fr) | Procede pour augmenter la recuperation d'huile a partir de gisements d'huile a faible teneur en gaz dissous | |
FR2472658A1 (fr) | Procede perfectionne de consolidation de formations geologiques par injection d'un compose chimique polymerisable | |
CA2054781C (fr) | Methode et dispositif pour consolider une formation traversee par un puits devie | |
De Amorim | Initiation et propagation de fissures dans une roche argileuse sous pression de gaz: étude expérimentale et numérique | |
FR2925570A1 (fr) | Procede de combustion in situ dans un gisement d'hydrocarbures | |
Mansour | Experimental Investigation of Cyclic Solvents Injection to Enhance the Production in Heavy Oil Reservoirs |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Kind code of ref document: A2 Designated state(s): FR GB NL |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20020326 |
|
AKX | Designation fees paid |
Free format text: FR GB NL |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): FR GB NL |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20041129 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20050609 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20070627 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070426 Year of fee payment: 10 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20090101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20090228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080630 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20100401 Year of fee payment: 13 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110605 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110605 |