EP0435756A1 - Method and device for stimulation of an underground formation by injection of a fluid coming from an adjacent zone along fractures proceeding from a drain hole in a low-permeable intermediate layer - Google Patents
Method and device for stimulation of an underground formation by injection of a fluid coming from an adjacent zone along fractures proceeding from a drain hole in a low-permeable intermediate layer Download PDFInfo
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- EP0435756A1 EP0435756A1 EP90403707A EP90403707A EP0435756A1 EP 0435756 A1 EP0435756 A1 EP 0435756A1 EP 90403707 A EP90403707 A EP 90403707A EP 90403707 A EP90403707 A EP 90403707A EP 0435756 A1 EP0435756 A1 EP 0435756A1
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- zone
- intermediate layer
- drain
- production
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- 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
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- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Definitions
- the present invention relates to a method for stimulating an underground zone by delayed injection of pressurized fluid from a neighboring zone by means of a deflected drain passing through an intermediate layer which is not very permeable.
- a deflected drain passing through an intermediate layer which is not very permeable.
- the method according to the invention more particularly makes it possible to stimulate the production of an oil zone separated from an underlying zone containing a pressurized fluid, such as an aquiferous zone or possibly an oil zone.
- Various techniques well known to specialists are used to stimulate the production of oil zones.
- One of them consists essentially of injecting a pressurized fluid into the production formation, capable of draining the stagnant oil in the rocks due to its viscosity.
- the fluid used is for example pressurized water injected by drains drilled through the formation. It can also be water existing deep in the production basin itself in the form of an underlying aquifer.
- the aquifer In certain types of basins, the aquifer is located beneath the oil zone and separated from it by a layer which is not very permeable due in particular to the presence of heavy and very viscous hydrocarbon products ("tarmat").
- tarmat heavy and very viscous hydrocarbon products
- the method according to the invention makes it possible to stimulate the production of an underground zone by delayed injection of a fluid coming from a neighboring zone separated from the first by an intermediate layer which is not very permeable, avoiding the drawbacks mentioned above.
- It is characterized in that it comprises the drilling of at least one deflected drain in said intermediate layer and the delayed opening by fracturing of the intermediate layer, of at least one communication path connecting the neighboring area to the underground area , so as to promote the drainage of said underground zone by the pressurized fluid.
- the method includes, for example, making from drain, fracturing between an oil zone and an underlying aquifer zone.
- the method also includes, for example, carrying out from the drain, fractures making an oil zone communicate with an underlying second oil zone.
- the drain can be pierced in an intermediate layer which is not very permeable. It can also be drilled in a non-oil-bearing intermediate layer.
- the device according to the invention is characterized in that it comprises a pipe disposed in a deviated drain pierced in the intermediate layer, said pipe being pierced with openings over part of its length, shutter blocks for isolating portions of the pipe on the part thereof pierced with openings, and means for applying hydraulic pressures capable of fracturing the intermediate layer and putting in communication during the production period, the two zones of share and other of said intermediate layer.
- the oil zone Z1 produces oil by at least one production well P1.
- This well can be vertical as shown in FIG. 1 or alternatively be horizontal.
- a very low permeability layer L there is a neighboring zone containing a fluid under pressure.
- the pressure of this fluid is higher than the pressure prevailing in the production zone Z1 because the neighboring zone is at a greater depth.
- This fluid can be water or even a petroleum fluid.
- the intermediate layer L can for example be an area made almost impermeable due to the presence of very heavy and viscous hydrocarbon products.
- This layer L can also be of a non-oil type.
- the method according to the invention comprises drilling from the surface S of a deviated drain D (horizontal or slightly inclined relative to the horizontal) so as to remain in the intermediate layer.
- a deviated drain D horizontal or slightly inclined relative to the horizontal
- the drain D is drilled, it is provided with a casing or casing C over its entire length.
- Known sealing means make it possible to close the annular space between the casing and the drain.
- the casing C is provided with lateral openings O putting the crossed formations in communication with the interior of the drain D.
- the drain can be drilled at any time, before the production of the oil zone Z1 or possibly during the production period.
- fracturing operations are carried out on the intermediate layer from the previously pierced drain D.
- a tube (not shown) communicating the confined part with a hydraulic system, a fluid is applied under sufficient pressure to fracture the walls until the establishment of communication channels F between the two zones Z1 and Z2.
- the previous sequence of operations may be repeated at several different points in the drain, so as to widen the fractured area.
- a blocking block B3 is installed in the casing so as to isolate the drain from the outside environment.
- the fluid in this case the water of zone Z2, being at a higher pressure and the drain being confined by the obturation block B3, the water enters zone Z1 by the fractures F of casing C and flushes out the oil accumulated in the formation.
- the drain D is arranged so that it can be used as a production well.
- the casing C is provided in its part which crosses the production zone Z1, with another portion of length d2 provided with lateral orifices.
- This other casing portion d2 is, depending on the case, more or less distant from the portion d1 through which the water coming from the zone Z2 can enter and laterally offset with respect thereto.
- a shutter member B4 Between the two portions d1 and d2 is disposed a shutter member B4 whose closure can be triggered from the surface installation.
- the length portion d1 of the casing is fractured, in the same way as in the previous embodiment and the organ is closed B4 so as to isolate one from the other the two parts d1 and d2 of the casing.
- Water from the underlying zone penetrates by fracturing into the production zone Z1 and drives the oil towards the production wells and in particular towards the part d2 of the casing C open to the external environment. The drain thus participates in production.
- the method according to the invention thus makes it possible to best use the high pressure fluid available in situ for the purpose of stimulating oil production.
- the position of the vertical and / or horizontal production wells relative to the deflected drains D or vice versa of the drains with respect to the wells according to the order in which they will have been drilled is chosen according to the rules of the art so as to optimize oil production .
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
Description
La présente invention concerne une méthode pour stimuler une zone souterraine par injection différée de fluide sous pression provenant d'une zone voisine au moyen d'un drain dévié traversant une couche intermédiaire très peu perméable. Dans toute la suite de ce texte, on désignera par drain dévié tout forage dont une partie au moins est horizontale ou relativement peu inclinée par rapport à l'horizontale.The present invention relates to a method for stimulating an underground zone by delayed injection of pressurized fluid from a neighboring zone by means of a deflected drain passing through an intermediate layer which is not very permeable. Throughout the rest of this text, the term “diverted drain” will designate any borehole of which at least part is horizontal or relatively slightly inclined relative to the horizontal.
La méthode selon l'invention permet plus particulièrement de stimuler la production d'une zone pétrolifère séparée d'une zone sous-jacente contenant un fluide sous pression, telle qu'une zone aquifère ou éventuellement pétrolifère.The method according to the invention more particularly makes it possible to stimulate the production of an oil zone separated from an underlying zone containing a pressurized fluid, such as an aquiferous zone or possibly an oil zone.
Diverses techniques bien connues des spécialistes sont utilisées pour stimuler la production des zones pétrolifères. L'une d'entre elles consiste essentiellement à injecter un fluide sous pression dans la formation en production, capable de drainer le pétrole stagnant dans les roches en raison de sa viscosité. Le fluide employé est par exemple de l'eau sous pression injectée par des drains forés au travers de la formation. Il peut s'agir aussi d'eau existant en profondeur, dans le bassin en production lui-même sous la forme d'une nappe aquifère sous-jacente.Various techniques well known to specialists are used to stimulate the production of oil zones. One of them consists essentially of injecting a pressurized fluid into the production formation, capable of draining the stagnant oil in the rocks due to its viscosity. The fluid used is for example pressurized water injected by drains drilled through the formation. It can also be water existing deep in the production basin itself in the form of an underlying aquifer.
Dans certains type de bassins, la nappe aquifère se trouve sous la zone pétrolifère et séparée d'elle par une couche très peu perméable en raison notamment de la présence de produits hydrocarbonés lourds et très visqueux ("tarmat").In certain types of basins, the aquifer is located beneath the oil zone and separated from it by a layer which is not very permeable due in particular to the presence of heavy and very viscous hydrocarbon products ("tarmat").
On peut envisager d'utiliser cette eau sous-jacente pour stimuler la production d'une zone pétrolifère. La nappe d'eau étant localisée à une profondeur supérieure à celle de la zone pétrolifère, sa pression interne est supérieure. L'épuisement au moins partiel de la zone en production a pour effet d'accroître la surpression de l'eau dans la nappe sous-jacente par rapport aux fluides de la formation supérieure. L'injection éventuelle dans la formation pétrolière de cette eau en surpression doit permettre de drainer l'huile et de favoriser la production.We can consider using this underlying water to stimulate the production of an oil zone. The water table being located at a depth greater than that of the oil zone, its internal pressure is higher. The at least partial exhaustion of the zone in production has the effect of increasing the overpressure of the water in the underlying tablecloth relative to the fluids of the upper formation. The possible injection into the oil formation of this overpressure water must make it possible to drain the oil and to promote production.
Les tentatives de stimulation des zones de production surmontant des nappes aquifères n'ont pas donné jusqu'ici les résultats escomptés. Des puits ou des drains verticaux ont été percés au travers de la zone pétrolifère, de manière à mettre le gisement pétrolifère en communication avec la nappe d'eau. Mais on a constaté que ce type de puits produisait essentiellement de l'eau. On peut expliquer ce résultat négatif par le fait que l'eau de la nappe a tendance à s'échapper directement vers la surface par le puits ainsi créé au lieu de pénéter dans la formation pétrolifère. Ce phénomène persiste si l'on descend dans le puits un organe d'obturation car l'eau de la nappe à tendance à le contourner au travers des formations environnantes. Une obturation éventuelle près de la surface amène une certaine diffusion de l'eau dans la zone pétrolifère. Mais les résultants ne sont pas très significatifs car le volume du gisement pénétré par l'eau reste relativement faible.Attempts to stimulate production areas above aquifers have so far not produced the expected results. Vertical wells or drains were drilled through the oil zone, so as to put the oil deposit in communication with the water table. However, it has been found that this type of well mainly produces water. This negative result can be explained by the fact that the water in the aquifer tends to escape directly to the surface through the well thus created instead of entering the oil formation. This phenomenon persists if a shutter member is lowered into the well because the water in the aquifer tends to bypass it through the surrounding formations. A possible plugging near the surface leads to a certain diffusion of water in the oil zone. However, the results are not very significant because the volume of the deposit penetrated by the water remains relatively small.
La méthode selon l'invention permet de stimuler la production d'une zone souterraine par injection différée d'un fluide provenant d'une zone voisine séparée de la première par une couche intermédiaire peu perméable, en évitant les inconvénients ci-dessus mentionnés.The method according to the invention makes it possible to stimulate the production of an underground zone by delayed injection of a fluid coming from a neighboring zone separated from the first by an intermediate layer which is not very permeable, avoiding the drawbacks mentioned above.
Elle est caractérisée en ce qu'elle comporte le percement d'au moins un drain dévié dans ladite couche intermédiaire et l'ouverture différée par fracturation de la couche intermédiaire, d'au moins une voie de communication reliant la zone voisine à la zone souterraine, de manière à favoriser le drainage de ladite zone souterraine par le fluide sous pression.It is characterized in that it comprises the drilling of at least one deflected drain in said intermediate layer and the delayed opening by fracturing of the intermediate layer, of at least one communication path connecting the neighboring area to the underground area , so as to promote the drainage of said underground zone by the pressurized fluid.
La méthode comporte par exemple la réalisation à partir du drain, de fracturations faisant communiquer une zone pétrolifère et une zone aquifère sous-jacente.The method includes, for example, making from drain, fracturing between an oil zone and an underlying aquifer zone.
La méthode comporte aussi par exemple la réalisation à partir du drain, de fracturations faisant communiquer une zone pétrolière et une seconde zone pétrolière sous-jacente.The method also includes, for example, carrying out from the drain, fractures making an oil zone communicate with an underlying second oil zone.
Le drain peut être percé dans une couche intermédiaire très peu perméable. Il peut encore être percé dans une couche intermédiaire non pétrolifère.The drain can be pierced in an intermediate layer which is not very permeable. It can also be drilled in a non-oil-bearing intermediate layer.
Le dispositif selon l'invention est caractérisé en ce qu'il comporte une conduite disposée dans un drain dévié percé dans la couche intermédiaire, ladite conduite étant percée d'ouvertures sur une partie de sa longueur, des blocs d'obturation pour isoler des portions de la conduite sur la partie de celle-ci percée d'ouvertures, et des moyens pour appliquer des pressions hydrauliques capables de fracturer la couche intermédiaire et de mettre en communication au cours de la période de production, les deux zones de part et d'autre de ladite couche intermédiaire.The device according to the invention is characterized in that it comprises a pipe disposed in a deviated drain pierced in the intermediate layer, said pipe being pierced with openings over part of its length, shutter blocks for isolating portions of the pipe on the part thereof pierced with openings, and means for applying hydraulic pressures capable of fracturing the intermediate layer and putting in communication during the production period, the two zones of share and other of said intermediate layer.
L'injection de fluide sous pression dans une zone souterraine telle qu'un gisement pétrolier dont la pression interne est affaiblie du fait de la production, par fracturation d'une couche intermédiaire depuis un drain percé le long de celle-ci et convenablement confiné pour empêcher le fluide de s'échapper vers la surface, a pour effet de pousser l'huile vers les puits de production. L'utilisation d'un drain dévié (horizontal ou faiblement incliné sur l'horizontale) permet d'augmenter le volume de la zone envahie par le fluide injecté. Lorsque la zone voisine est une zone aquifère active c'est-à-dire réalimentée en permanence par des entrées d'eau, la pression d'injection ne subit aucune chute sensible durant toute la phase de drainage. L'effet obtenu est plus durable.The injection of pressurized fluid into an underground zone such as an oil deposit whose internal pressure is weakened due to production, by fracturing of an intermediate layer from a drain drilled along it and suitably confined for preventing the fluid from escaping to the surface, has the effect of pushing the oil towards the production wells. The use of a deviated drain (horizontal or slightly inclined on the horizontal) makes it possible to increase the volume of the area invaded by the injected fluid. When the neighboring zone is an active aquifer zone, that is to say permanently replenished by water inlets, the injection pressure does not undergo any significant drop during the entire drainage phase. The effect obtained is more lasting.
D'autres caractéristiques et avantages de la méthode et du dispositif selon l'invention apparaitront mieux à la lecture de la description ci-après d'un mode de réalisation décrit à titre d'exemple non limitatif, en se référant aux dessins annexés où:
- la Fig. 1 montre de facon schématique une coupe d'une zone de production pétrolière surmontant une zone contenant un fluide sous pression telle qu'une zone aquifère et un premier mode de mise en oeuvre de la méthode selon l'invention; et.
- la Fig. 2 montre de façon schématique la même coupe avec un second mode de réalisation de la méthode.
- Fig. 1 schematically shows a section of an area of petroleum production overcoming a zone containing a pressurized fluid such as an aquifer zone and a first mode of implementation of the method according to the invention; and.
- Fig. 2 schematically shows the same section with a second embodiment of the method.
La zone pétrolifère Z1 produit du pétrole par au moins un puits de production P1. Ce puits peut être vertical comme indiqué sur la Fig. 1 ou bien encore selon les cas être horizontal. Dans certains types de bassins, au-dessous de la zone pétrolifère Z1 et séparée d'elle par une couche très peu perméable L, se trouve une zone voisine renfermant un fluide sous pression. La pression de ce fluide est supérieure à la pression régnant dans la zone de production Z1 du fait que la zone voisine est à une profondeur plus grande. Ce fluide peut être de l'eau ou bien encore un fluide pétrolier. Quand la zone voisine est aquifère, elle est généralement du type actif i.e. elle est alimentée par des apports d'eau extérieurs et la pression qui y règne reste sensiblement constante. La couche intermédiaire L peut être par exemple une zone rendue presque imperméable en raison de la présence de produits hydrocarbonés très lourds et visqueux. Cette couche L peut aussi être d'un type non pétrolifère.The oil zone Z1 produces oil by at least one production well P1. This well can be vertical as shown in FIG. 1 or alternatively be horizontal. In certain types of basins, below the oil zone Z1 and separated from it by a very low permeability layer L, there is a neighboring zone containing a fluid under pressure. The pressure of this fluid is higher than the pressure prevailing in the production zone Z1 because the neighboring zone is at a greater depth. This fluid can be water or even a petroleum fluid. When the neighboring area is aquiferous, it is generally of the active type i.e. it is supplied by external water supplies and the pressure which reigns there remains substantially constant. The intermediate layer L can for example be an area made almost impermeable due to the presence of very heavy and viscous hydrocarbon products. This layer L can also be of a non-oil type.
La méthode selon l'invention comporte le forage depuis la surface S d'un drain D dévié (horizontal ou faiblement incliné par rapport à l'horizontale) de manière à rester dans la couche intermédiaire. Quand le drain D est foré, il est pourvu d'un cuvelage ou casing C sur toute sa longueur. Des moyens connus d'obturation permettent de fermer l'espace annulaire entre le cuvelage et le drain. Sur au moins une portion d1 de sa longueur, là où il traverse la zone de production, le casing C est pourvu d'ouvertures latérales O mettant les formations traversées en communication avec l'intérieur du drain D. A ce stade aucune communication n'existe entre les deux zones Z1 et Z2. Le drain peut être foré à tout moment, avant la mise en production de la zone Z1 pétrolifère ou éventuellement au cours de la période de production.The method according to the invention comprises drilling from the surface S of a deviated drain D (horizontal or slightly inclined relative to the horizontal) so as to remain in the intermediate layer. When the drain D is drilled, it is provided with a casing or casing C over its entire length. Known sealing means make it possible to close the annular space between the casing and the drain. Over at least a portion d1 of its length, where it crosses the production zone, the casing C is provided with lateral openings O putting the crossed formations in communication with the interior of the drain D. At this stage no communication exists between the two zones Z1 and Z2. The drain can be drilled at any time, before the production of the oil zone Z1 or possibly during the production period.
Au cours de cette période, quand il s'avère que la zone Z1 nécessite une stimulation, on réalise des opérations de fracturation de la couche intermédiaire à partir du drain D préalablement percé. A cet effet et par une méthode bien connue des spécialistes, on descend dans le cuvelage C des organes d'obturation dilatables B1,B2 jusque dans la partie pourvue d'ouvertures latérales O et on les met en place de manière à confiner une portion limitée du cuvelage. Par un tube (non représenté) faisant communiquer la partie confinée avec un système hydraulique, on applique un fluide sous une pression suffisante pour fracturer les parois jusqu'à l'établissement de voies de communication F entre les deux zones Z1 et Z2. La séquence d'opérations précédente est recommencée éventuellement à plusieurs endroits différents du drain, de manière à élargir la zone fracturée.During this period, when it turns out that the Z1 area requires stimulation, fracturing operations are carried out on the intermediate layer from the previously pierced drain D. To this end and by a method well known to specialists, one descends in the casing C expandable obturation members B1, B2 as far as the part provided with lateral openings O and they are placed so as to confine a limited portion of the casing. By a tube (not shown) communicating the confined part with a hydraulic system, a fluid is applied under sufficient pressure to fracture the walls until the establishment of communication channels F between the two zones Z1 and Z2. The previous sequence of operations may be repeated at several different points in the drain, so as to widen the fractured area.
Les opérations de fracturation étant achevées, on installe dans le casing un bloc d'obturation B3 de manière à isoler le drain du milieu extérieur. Le fluide, en l'occurrence l'eau de la zone Z2, se trouvant à une pression supérieure et le drain se trouvant confiné par le bloc d'obturation B3, l'eau pénètre dans la zone Z1 par les fracturations F du casing C et chasse les hydrocarbures accumulés dans la formation.The fracturing operations being completed, a blocking block B3 is installed in the casing so as to isolate the drain from the outside environment. The fluid, in this case the water of zone Z2, being at a higher pressure and the drain being confined by the obturation block B3, the water enters zone Z1 by the fractures F of casing C and flushes out the oil accumulated in the formation.
Suivant le mode de réalisation de la Fig.2, le drain D est agencé de manière à pouvoir être utilisé comme puits de production. A cet effet, le cuvelage C est pourvu dans sa partie qui traverse la zone de production Z1, d'une autre portion de longueur d2 pourvue d'orifices latéraux. Cette autre portion de cuvelage d2 est selon les cas plus ou moins distante de la portion d1 par où peut rentrer l'eau provenant de la zone Z2 et latéralement décalée par rapport à celle-ci. Entre les deux portions d1 et d2 est disposé un organe B4 d'obturation dont la fermeture peu être déclenchée depuis l'installation de surface.According to the embodiment of Fig.2, the drain D is arranged so that it can be used as a production well. To this end, the casing C is provided in its part which crosses the production zone Z1, with another portion of length d2 provided with lateral orifices. This other casing portion d2 is, depending on the case, more or less distant from the portion d1 through which the water coming from the zone Z2 can enter and laterally offset with respect thereto. Between the two portions d1 and d2 is disposed a shutter member B4 whose closure can be triggered from the surface installation.
Au cours de la période de production, quand une stimulation de la production est nécessaire, on procède à une fracturation de la portion de longueur d1 du cuvelage, de la même façon que dans le mode de réalisation précédent et l'on ferme l'organe B4 de manière à isoler l'une de l'autre les deux parties d1 et d2 du cuvelage. L'eau issue de la zone sous-jacente, pénètre par les fracturations dans la zone de production Z1 et chasse l'huile vers les puits de production et notamment vers la partie d2 du cuvelage C ouverte sur le milieu extérieur. Le drain participe ainsi à la production.During the production period, when stimulation of the production is necessary, the length portion d1 of the casing is fractured, in the same way as in the previous embodiment and the organ is closed B4 so as to isolate one from the other the two parts d1 and d2 of the casing. Water from the underlying zone, penetrates by fracturing into the production zone Z1 and drives the oil towards the production wells and in particular towards the part d2 of the casing C open to the external environment. The drain thus participates in production.
La méthode selon l'invention permet ainsi d'utiliser au mieux le fluide à haute pression disponible in situ à des fins de stimulation de production pétrolifère.The method according to the invention thus makes it possible to best use the high pressure fluid available in situ for the purpose of stimulating oil production.
La position des puits de production verticaux et/ou horizontaux relativement aux drains déviés D ou inversement des drains par rapport aux puits selon l'ordre dans lequel ils auront été forés est choisie selon les règles de l'art de manière à optimiser la production pétrolière.The position of the vertical and / or horizontal production wells relative to the deflected drains D or vice versa of the drains with respect to the wells according to the order in which they will have been drilled is chosen according to the rules of the art so as to optimize oil production .
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8917482A FR2656651B1 (en) | 1989-12-29 | 1989-12-29 | METHOD AND DEVICE FOR STIMULATING A SUBTERRANEAN ZONE BY DELAYED INJECTION OF FLUID FROM A NEIGHBORING ZONE, ALONG FRACTURES MADE FROM A DRILLED DRAIN IN A LITTLE PERMEABLE LAYER. |
| FR8917482 | 1989-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0435756A1 true EP0435756A1 (en) | 1991-07-03 |
| EP0435756B1 EP0435756B1 (en) | 1994-10-26 |
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ID=9389168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90403707A Expired - Lifetime EP0435756B1 (en) | 1989-12-29 | 1990-12-20 | Method and device for stimulation of an underground formation by injection of a fluid coming from an adjacent zone along fractures proceeding from a drain hole in a low-permeable intermediate layer |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5133410A (en) |
| EP (1) | EP0435756B1 (en) |
| CA (1) | CA2033358C (en) |
| DE (1) | DE69013661T2 (en) |
| DK (1) | DK0435756T3 (en) |
| FR (1) | FR2656651B1 (en) |
| NO (1) | NO301091B1 (en) |
Families Citing this family (55)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249628A (en) * | 1992-09-29 | 1993-10-05 | Halliburton Company | Horizontal well completions |
| US5396957A (en) * | 1992-09-29 | 1995-03-14 | Halliburton Company | Well completions with expandable casing portions |
| US5325923A (en) * | 1992-09-29 | 1994-07-05 | Halliburton Company | Well completions with expandable casing portions |
| US5361856A (en) * | 1992-09-29 | 1994-11-08 | Halliburton Company | Well jetting apparatus and met of modifying a well therewith |
| EP0671549A1 (en) * | 1994-03-10 | 1995-09-13 | Shell Internationale Researchmaatschappij B.V. | Method of producing a fluid from an earth formation |
| US6729394B1 (en) * | 1997-05-01 | 2004-05-04 | Bp Corporation North America Inc. | Method of producing a communicating horizontal well network |
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- 1990-12-20 EP EP90403707A patent/EP0435756B1/en not_active Expired - Lifetime
- 1990-12-20 DE DE69013661T patent/DE69013661T2/en not_active Expired - Fee Related
- 1990-12-27 NO NO905594A patent/NO301091B1/en not_active IP Right Cessation
- 1990-12-28 CA CA002033358A patent/CA2033358C/en not_active Expired - Fee Related
- 1990-12-31 US US07/636,294 patent/US5133410A/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| NO905594D0 (en) | 1990-12-27 |
| FR2656651B1 (en) | 1995-09-08 |
| EP0435756B1 (en) | 1994-10-26 |
| FR2656651A1 (en) | 1991-07-05 |
| CA2033358A1 (en) | 1991-06-30 |
| US5133410A (en) | 1992-07-28 |
| DE69013661T2 (en) | 1995-03-02 |
| NO905594L (en) | 1991-07-01 |
| DE69013661D1 (en) | 1994-12-01 |
| CA2033358C (en) | 2002-01-22 |
| DK0435756T3 (en) | 1994-11-21 |
| NO301091B1 (en) | 1997-09-08 |
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