WO1983001273A1 - Extraction from oil fields with reinjection of separated materials - Google Patents

Extraction from oil fields with reinjection of separated materials Download PDF

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Publication number
WO1983001273A1
WO1983001273A1 PCT/FR1982/000161 FR8200161W WO8301273A1 WO 1983001273 A1 WO1983001273 A1 WO 1983001273A1 FR 8200161 W FR8200161 W FR 8200161W WO 8301273 A1 WO8301273 A1 WO 8301273A1
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WO
WIPO (PCT)
Prior art keywords
block
well
effluent
deposit
residual
Prior art date
Application number
PCT/FR1982/000161
Other languages
French (fr)
Inventor
Gerard Chaudot
Original Assignee
Chaudot, Gérard
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 Chaudot, Gérard filed Critical Chaudot, Gérard
Priority to BR8207912A priority Critical patent/BR8207912A/en
Priority to AU89589/82A priority patent/AU8958982A/en
Priority to DE8282902906T priority patent/DE3268173D1/en
Publication of WO1983001273A1 publication Critical patent/WO1983001273A1/en

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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
    • E21B43/34—Arrangements for separating materials produced by the well
    • E21B43/40—Separation associated with re-injection of separated materials

Definitions

  • the present invention relates to a process intended to maximize the recovery of fluids from liquid hydrocarbon deposits and to facilitate their exploitation with application, in particular to heavy and / or viscous hydrocarbon deposits, and to hydrocarbon deposits having a point high freezing.
  • crude oils are made up of a wide variety of hydrocarbons which can range from methane to heavy parafinics sometimes mixed, in extremely variable amounts with cyclic or aromatic hydrocarbons, even even asphaltene-like solids associated with metalloid atoms, metals or others, with possible association of non-hydrocarbon chemicals.
  • the exploitation is done by well, and the recovery of the oil in place is a function more particularly, of the number of wells, their spacings, the speed of withdrawal, and the means used for maintain reservoir pressure or to move fluids in place in the deposit to the withdrawal wells.
  • a heating fluid is injected into the deposit and sometimes, correlatively or not, fluids helping the displacement of the crude oil in the deposit.
  • the invention therefore aims to eliminate all or part of the disadvantages or hazards mentioned above.
  • the process for producing the hydrocarbon deposit in particular with the aim of improving the recovery of the effluent, of facilitating its transportation to the treatment installations, as well as its treatment, consists in recovering the light fractions condensable and / or gaseous effluent, even if they are associated in small quantities, and to reinject them into the well (s) and / or into the deposit.
  • this method can also successively comprise, heating of the effluent from the well, separation of the gaseous, liquid and solid phases of the effluent, compression, cooling and possibly dehydration of the gaseous phase, with recovery of the condensates. hydrocarbons and the reinjection of condensates in the well or in the deposit.
  • the invention also relates to an installation for implementing the method according to the invention, this installation comprising at least one well making it possible to connect the deposit to the surface installations, at least one installation for heating the effluent, at least one separator of the gaseous, liquid and solid phases of the effluent, at least one cooling compression and possibly dehydration unit of the gaseous phase, with recovery of the hydrocarbon condensates and at least one unit for reinjecting the condensates into the well.
  • the single figure is the block diagram of an installation for the exploitation of a hydrocarbon deposit with reinjection of the light fractions of the effluent.
  • block 1 represents the deposit from which the effluent is removed using the well. production represented by block 2.
  • the effluent emanating from this well is reheated in at least one reheating unit 3 at a temperature favorable to the separation of the liquid and gaseous phases and to the segregation of the oil, water and possibly solid constituents in at minus a separation unit 4.
  • the gas phase is then cooled and compressed in one or more stages.
  • the gas, during this process is dehydrated to a pinkish point such as its water content residual will not cause difficulties in downstream processing facilities.
  • the condensates collected at various points in the unit 5 are recovered and separated from the water associated therewith in a purifier 6 and possibly stored in an additional storage unit 7.
  • the residual gas recovered at the outlet of unit 5 is then refrigerated in at least one unit 8 using external refrigeration means, at a temperature making it possible to optimize the recovery of light and cold condensates.
  • the light and cold condensates are recovered (block 9) and stored in at least one thermally insulated unit 10.
  • the residual gases are
  • Injected into well 2 or any other well involved in the production of the deposit directly if their pressure is sufficient, or via at least one additional compression unit 11 if their pressure is insufficient to be reinjected at the optimum depth provided in the well (s), or directly in the deposit 1.
  • one or the other or the two units 8 and 11 will not necessarily be installed, all or part of the gases being either sold or used to meet energy or operating or detection fluid, field installations.
  • the condensates recovered in the purifier 6 are then injected into well 2 or into any other well participating in the production of the deposit, directly if their pressure is sufficient, or via at least one pump if their pressure is insufficient to be reinjected at the optimum depth provided in the / or wells, or directly in the deposit.
  • Cold condensates collected by the units 9 are then injected, mixed or not mixed in whole or in part with the condensates recovered by the purifier 6, after pumping and heating (block 13), to satisfy the pressure conditions provided for the injection of the condensates recovered by the purifier 6.
  • the start-up of the first well (s) 2 may possibly be carried out by a load of light hydrocarbons (block 1 4) condensed or not, coming from a source external to the wells.
  • the water associated with production, and separated by units 4 and 5 can be eliminated on the surface (block 15), but if this water generates pollution or discomfort in the environment, it will be after skimming of the residual oil (block 16), reinjected into / or the deposits 1, in order to maintain the pressure of the latter within a certain measured.
  • This residual water can be combined with adjuvants (block 17) modifying its viscosity or causing a swelling effect of the adjuvant water mixture, to move the hydrocarbons in place in the / or the deposits towards the / or producing wells.
  • An advantage of the process according to the invention consists in that by reinjecting into the / or the production wells ⁇ u directly into the / or the deposits of light, liquid and / or gaseous hydrocarbons, jointly or not, originating from the / or wells, with any external contribution to facilitate certain operations such as the start of production of the well (s), an effect is obtained of reducing the weight of the column of fluid in the well (s) as well as a reduction which The viscosity of the effluent can be considerable, this in order to improve the productivity of the well (s) and reduce the difficulties of separation of the phases constituting the natural effluent from the wells.
  • the injection into the or the deposits of the excess of light hydrocarbons, gaseous or not, produced by the deposit will contribute to increase the recovery of the hydrocarbons from the deposit by washing the matrix, (reservoir rock), decrease in density, viscosity or plasticity of native hydrocarbons, without generating incompatibility problems such as those which can be created by the addition of fluids foreign to the deposit.

Abstract

The method according to the invention comprises the recovery of condensable and/or gaseous light fractions of the effluent and the reinjection of those fractions in the well or wells and/or the field. The method comprises the heating of the effluent (3) coming from the well (2), the separation of the gas, liquid and solid phases of the effluent (4), the compression, cooling and dehydration of the gas phase (5) with recovery of hydrocarbon condensate (8) and reinjection in the well (2) or in the field (1). The invention allows to facilitate the exploitation of hydrocarbon fields.

Description

EXTRACTION DES GISEMENTS PETROLIFERES AVEC LA REINJECTION DE MATERIAUX SEPARES EXTRACTION OF OIL DEPOSITS WITH REINJECTION OF SEPARATE MATERIALS
La présente invention concerne un procédé destiné a maximiser la récupération des fluides des gisements d'hydrocarbures liquides et en faciliter l'exploitation avec application, en particulier aux gisements d'hydrocarbures lourds et/ou visqueux, et aux gisements d'hydrocarbures ayant un point de figeage élevé. D'une manière générale. les pétroles bruts sont constitués par un ensemble d'une grande variété d'hydrocarbures pouvant aller du méthane aux parafiniques lourds parfois mélangés, en quantités extrêmement variables à des hydrocarbures cycliques ou aromatiques, voire même à des solides genre asphaltènes associés à des atomes métalloïdes, métaux ou autres, avec association éventuelle de corps chimiques non hydrocarbures.The present invention relates to a process intended to maximize the recovery of fluids from liquid hydrocarbon deposits and to facilitate their exploitation with application, in particular to heavy and / or viscous hydrocarbon deposits, and to hydrocarbon deposits having a point high freezing. In a general way. crude oils are made up of a wide variety of hydrocarbons which can range from methane to heavy parafinics sometimes mixed, in extremely variable amounts with cyclic or aromatic hydrocarbons, even even asphaltene-like solids associated with metalloid atoms, metals or others, with possible association of non-hydrocarbon chemicals.
Dès que le gisement est un peu profond, l'exploita tion se fait par puits, et la récupération du pétrole en place est fonction plus particulièrement, du nombre de puits, de leurs espacements, de la vitesse de soutirage, et des moyens utilisés pour conserver la pression du gisement ou pour déplacer les fluides en place dans le gisement vers les puits de soutirage.As soon as the deposit is a little deep, the exploitation is done by well, and the recovery of the oil in place is a function more particularly, of the number of wells, their spacings, the speed of withdrawal, and the means used for maintain reservoir pressure or to move fluids in place in the deposit to the withdrawal wells.
Dès que le pétrole brut en place dans le gisement est un peu lourd et que sa viscosité ou sa plasticité est élevée, la quantité de pétrole brut que l'on peut espérer récupérer, comparée à la quantité de pétrole en place dans le gisement, est relativement faible. Les moyens à mettre en oeuvre pour assister la production étant coûteux en matériel et en exploitation.As soon as the crude oil in place in the deposit is a little heavy and its viscosity or plasticity is high, the quantity of crude oil that we can hope to recover, compared to the quantity of petroleum in place in the deposit, is relatively weak. The means to be used to assist production being costly in equipment and in operation.
Par ailleurs, il arrive souvent que la hauteur de la colonne de pétrole brut dans le puits de production génère une pression au niveau du gisement, voisine de/ ou supérieure à la pression du gisement. On est alors amené à utiliser des pompes de différents types pour acheminer ou aider à acheminer, le pétrole brut jusqu'à, la surface, ou pour faire produire les puits à un débit acceptable. Une autre méthode consiste à utiliser du gaz que l'on remélange au pétrole brut dans le puits, afin de diminuer la masse volumique moyenne du mélange gaz-pétrole et provoquer ou améliorer ainsi le débit du puits (gas lift).Furthermore, it often happens that the height of the crude oil column in the production well generates a pressure at the level of the deposit, close to / or greater than the pressure of the deposit. We then have to use pumps of different types to transport or assist in transporting, the crude oil to, the surface, or to have the wells produced at an acceptable rate. Another method consists in using gas which is remixed with crude oil in the well, in order to decrease the average density of the gas-oil mixture and thus cause or improve the flow rate of the well (gas lift).
En outre dès que pétrole est trop visqueux, on injecte dans le gisement un fluide de réchauffage et parfois, corrélativement ou non, des fluides aidant au déplacement du pétrole brut dans le gisement.In addition, as soon as the oil is too viscous, a heating fluid is injected into the deposit and sometimes, correlatively or not, fluids helping the displacement of the crude oil in the deposit.
D'autre méthodes utilisent des procédés électriques, électrolytiques ou à ondes hautes fréquences pour obtenir le déplacement du pétrole dans le gisement. Enfin une autre façon de procéder consiste à injecter de l'air ou un comburant dans le gisement et à provoquer la combustion d'une partie du pétrole dans le gisement, et bénéficier ainsi des effets consécutifs à ce procédé. Selon le type de gisement, ces méthodes, toujours coûteuses, donnent des résultats souvent discutables et parfois aléatoires, et ne facilitent pas toujours la séparation des effluents rendus en surface.Other methods use electrical, electrolytic or high frequency wave processes to obtain the displacement of the oil in the deposit. Finally, another way of proceeding consists in injecting air or an oxidizer in the deposit and causing the combustion of part of the oil in the deposit, and thus benefiting from the effects consecutive to this process. Depending on the type of deposit, these methods, always expensive, give results which are often questionable and sometimes random, and do not always facilitate the separation of the effluents returned to the surface.
L'invention a donc pour but de supprimer tout ou partie des inconvénients ou aléas précédemment mentionnés.The invention therefore aims to eliminate all or part of the disadvantages or hazards mentioned above.
A cet effet, le procédé de production du gisement d'hydrocarbures, notamment dans le but d'améliorer la récupération de l'effluent, de faciliter son acheminement jusqu'aux installations de traitement, ainsi que son traitement, consiste à récupérer les fractions légères condensables et/ou gazeuses de l'effluent, même si elles sont associées en petite quantité, et à les réinjecter dans le ou les puits et/ou dans le gisement.To this end, the process for producing the hydrocarbon deposit, in particular with the aim of improving the recovery of the effluent, of facilitating its transportation to the treatment installations, as well as its treatment, consists in recovering the light fractions condensable and / or gaseous effluent, even if they are associated in small quantities, and to reinject them into the well (s) and / or into the deposit.
Selon une autre caractéristique de l'invention, ce procédé peut en outre comprendre successivement, le chauffage de l'effluent provenant du puits, la séparation des phases gazeuses, liquides et solides de l'effluent, la compression, le refroidissement et éventuellement la déshydratation de la phase gazeuse, avec récupération des condensats. hydrocarbures et la réinjection des condensats dans le puits ou dans le gisement.According to another characteristic of the invention, this method can also successively comprise, heating of the effluent from the well, separation of the gaseous, liquid and solid phases of the effluent, compression, cooling and possibly dehydration of the gaseous phase, with recovery of the condensates. hydrocarbons and the reinjection of condensates in the well or in the deposit.
L'invention concerne également une installation pour la mise en application du procédé selon l'invention, cette installation comprenant au moins un puits permettant de raccorder le gisement aux installations de surface, au moins une installation de chauffage de l'effluent, au moins un séparateur des phases gazeuses, liquides et solides de l'effluent, au moins une unité de compression refroidissement et éventuellement de déshydratation de la phase gazeuse, avec récupération des condensats hydrocarbures et au moins une unité de réinjection des condensats dans le puits.The invention also relates to an installation for implementing the method according to the invention, this installation comprising at least one well making it possible to connect the deposit to the surface installations, at least one installation for heating the effluent, at least one separator of the gaseous, liquid and solid phases of the effluent, at least one cooling compression and possibly dehydration unit of the gaseous phase, with recovery of the hydrocarbon condensates and at least one unit for reinjecting the condensates into the well.
Un mode de réalisation de l'invention sera décrit ci-après, à titre d'exemple non limitatif, avec référence au dessin annexé dans lequel :An embodiment of the invention will be described below, by way of nonlimiting example, with reference to the appended drawing in which:
La figure unique est le schéma-blocs de principe d'une installation pour l'exploitation d'un gisement d'hydrocarbure avec réinjection des fractions légères de l'effluent.The single figure is the block diagram of an installation for the exploitation of a hydrocarbon deposit with reinjection of the light fractions of the effluent.
Sur ce dessin, le bloc 1 représente le gisement duquel on prélève l'effluent grâce au puits de. production représenté par le bloc 2. L'effluent émanant de ce puits est réchauffé dans au moins une unité de réchauffage 3 à une température favorable à la séparation des phases liquides et gazeuses et à la ségrégation des constituants huile, eau et éventuellement solides dans au moins une unité de séparation 4 . Dans au moins une unité de compression 5, la phase gazeuse est alors refroidie et comprimée en un ou plusieurs étages. De plus, le gaz, au cours de ce processus, est déshydraté à un point de rosé tel que sa teneur en eau résiduelle ne générera pas de difficultés dans les installations de traitement situées en aval. Les condensats recueillis en divers points de l'unité 5 sont récupérés et séparés de l'eau qu'y est associée dans un épurateur 6 et éventuellement stockés dans une unité de stockage d'appoint 7.In this drawing, block 1 represents the deposit from which the effluent is removed using the well. production represented by block 2. The effluent emanating from this well is reheated in at least one reheating unit 3 at a temperature favorable to the separation of the liquid and gaseous phases and to the segregation of the oil, water and possibly solid constituents in at minus a separation unit 4. In at least one compression unit 5, the gas phase is then cooled and compressed in one or more stages. In addition, the gas, during this process, is dehydrated to a pinkish point such as its water content residual will not cause difficulties in downstream processing facilities. The condensates collected at various points in the unit 5 are recovered and separated from the water associated therewith in a purifier 6 and possibly stored in an additional storage unit 7.
Le gaz résiduel récupéré à la sortie de l'unité 5 est alors réfrigéré dans au moins une unité 8 utilisant des moyens de réfrigération extérieurs, à une température permettant d'optimiser la récupération des condensats légers et froids.The residual gas recovered at the outlet of unit 5 is then refrigerated in at least one unit 8 using external refrigeration means, at a temperature making it possible to optimize the recovery of light and cold condensates.
A la sortie des unités 8, les condensats légers et froids sont récupérés (bloc 9) et stockés dans au moins une unité calorifugée 10. A la sortie des unités 8, les gaz résiduels sontAt the outlet of the units 8, the light and cold condensates are recovered (block 9) and stored in at least one thermally insulated unit 10. At the outlet of the units 8, the residual gases are
Injectés dans le puits 2 ou dans n'importe quel autre puits participant à la production du gisement, directement si leur pression est suffisante, ou par l'intermédiaire d'au moins une unité de compression supplémentaire 11 si leur pression est insuffisante pour être réinjectés à la profondeur optimum prévue dans le ou les puits, ou directement dans le gisement 1.Injected into well 2 or any other well involved in the production of the deposit, directly if their pressure is sufficient, or via at least one additional compression unit 11 if their pressure is insufficient to be reinjected at the optimum depth provided in the well (s), or directly in the deposit 1.
Selon le type et les conditions du gisement 1 envisagé, l'une, l'autre ou les deux unités 8 et 11 ne seront pas obligatoirement installées, tout ou partie des gaz étant soit vendu, soit utilisé pour satisfaire les besoins en énergie ou en fluide de manoeuvre ou de détection, des installations du champ. Les condensats récupérés dans 1' épurateur 6 sont alors Injectés dans le puits 2 ou dans n'importe quel autre puits participant à la produccion du gisement, directement si leur pression est suffisante, ou par l'intermédiaire d'au moins une pompe si leur pression est insuffisante pour être réinjectésà la profondeur optimum prévue dans le/ou les puits, ou directement dans le gisement.Depending on the type and conditions of deposit 1 envisaged, one or the other or the two units 8 and 11 will not necessarily be installed, all or part of the gases being either sold or used to meet energy or operating or detection fluid, field installations. The condensates recovered in the purifier 6 are then injected into well 2 or into any other well participating in the production of the deposit, directly if their pressure is sufficient, or via at least one pump if their pressure is insufficient to be reinjected at the optimum depth provided in the / or wells, or directly in the deposit.
Les condensats froids récupérés par les unités 9 sont alors injectes, mélangés ou non en tout ou partie aux condensats récupérés par 1 'épurateur 6, après pompage et réchauffage (bloc 13), pour satisfaire les conditions de pression prévues pour l'injection des condensats récupérés par l' épurateur 6.Cold condensates collected by the units 9 are then injected, mixed or not mixed in whole or in part with the condensates recovered by the purifier 6, after pumping and heating (block 13), to satisfy the pressure conditions provided for the injection of the condensates recovered by the purifier 6.
Même si les hydrocarbures naturellement dans le gisement n'ont qu'une coupe faible en gaz et en parties condensables par les moyens décrits ci-dessus, à la condition que les installations ci-dessus décrites ne provoquent pas de pertes de substance dépassant l'appoint provoqué par la production mère, il se crée dans le/όu les puits 2, ou dans le gisement 1, un mélange hydrocarbures vierges/hydrocarbures légers recyclés, dont la teneur en hydrocarbures légers ira en croissant avec le temps.Even if the hydrocarbons naturally found in the deposit have only a weak cut in gas and in parts condensable by the means described above, on condition that the installations described above do not cause any loss of substance exceeding the top-up caused by the mother production, it is created in the / όu wells 2, or in the deposit 1, a mixture of virgin hydrocarbons / recycled light hydrocarbons, whose light hydrocarbon content will increase over time.
Il s'établit ainsi un volant croissant de condensats et de gaz. Dès que le débit du/ou des puits 2, atteindra le niveau souhaité, l'excédent des hydrocarbures légers pourra alors être injecté dans un ou plusieurs puits qui pourront être ainsi mis en production ou qui serviront à balayer les hydrocarbures en place vers le/ou les puits producteurs et renforcer la pression du/eu des gisements. Cet excédent d'hydrocarbures condensables pourra être également remélangé en proportions variables au brut commercialisé afin d'en améliorer les caractéristiques ou la valeur, ou bien être commercialisé directement.It thus establishes a growing steering wheel of condensates and gas. As soon as the flow rate from / or wells 2 reaches the desired level, the excess light hydrocarbons can then be injected into one or more wells which can thus be put into production or which will be used to sweep the hydrocarbons in place towards / or producing wells and reinforcing the pressure of the deposits. This surplus of condensable hydrocarbons may also be remixed in variable proportions to the crude marketed in order to improve its characteristics or value, or else be marketed directly.
Le démarrage du/ou des premiers puits 2 pourra éventuellement être effectué par une charge d'hydrocarbures légers (bloc 1 4 ) condensés ou non, provenant d'une source extérieure aux puits. L'eau associée à la production, et séparée par les unités 4 et 5 pourra être éliminée en surface (bloc 15), mais si cette eau génère une pollution ou une gène dans l'environnement, elle sera après écrémage de l'huile résiduelle (bloc 16), réinjectée dans le/ou les gisements 1, afin de maintenir la pression de celui-ci dans une certaine mesure. Cette eau résiduelle peut être associée à des adjuvants (bloc 17) modifiant sa viscosité ou provoquant un effet de gonflement du mélange eau adjuvants, pour déplacer les hydrocarbures en place dans le/ou les gisements vers le/ou les puits producteurs.The start-up of the first well (s) 2 may possibly be carried out by a load of light hydrocarbons (block 1 4) condensed or not, coming from a source external to the wells. The water associated with production, and separated by units 4 and 5 can be eliminated on the surface (block 15), but if this water generates pollution or discomfort in the environment, it will be after skimming of the residual oil (block 16), reinjected into / or the deposits 1, in order to maintain the pressure of the latter within a certain measured. This residual water can be combined with adjuvants (block 17) modifying its viscosity or causing a swelling effect of the adjuvant water mixture, to move the hydrocarbons in place in the / or the deposits towards the / or producing wells.
Un avantage du procédé selon l'invention consiste en ce qu'en réinjectant dans le/ou les puits de production σu directement dans le/ou les gisements des hydrocarbures légers, liquides et/ou gazeux, conjointe ment ou non, issus du/ou des puits, avec apport externe éventuel pour faciliter certaines opérations telles que le démarrage de la production du/ou des puits, on obtient un effet d'allégement du poids de la colonne de fluide dans le/ou les puits ainsi qu'une diminution qui peut être considérable de la viscosité de l'effluent ceci dans le but d'améliorer la productivité du/ou des puits et diminuer les difficultés de séparation des phases constituant l'effluent naturel des puits. L'injection dans le/ou les gisements de l'excédent des hydrocarbures légers, gazeux ou non, produits par le gisement contribuera à augmenter la récupération des hydrocarbures du gisement par lavage de la matrice, (roche réservoir),diminution de la densité, de la viscosité ou de la plasticité des hydrocarbures natifs, sans pour autant générer des problèmes d'incompatibilité tels que ceux qui peuvent être créés par l'apport de fluides étrangers au gisement.An advantage of the process according to the invention consists in that by reinjecting into the / or the production wells σu directly into the / or the deposits of light, liquid and / or gaseous hydrocarbons, jointly or not, originating from the / or wells, with any external contribution to facilitate certain operations such as the start of production of the well (s), an effect is obtained of reducing the weight of the column of fluid in the well (s) as well as a reduction which The viscosity of the effluent can be considerable, this in order to improve the productivity of the well (s) and reduce the difficulties of separation of the phases constituting the natural effluent from the wells. The injection into the or the deposits of the excess of light hydrocarbons, gaseous or not, produced by the deposit will contribute to increase the recovery of the hydrocarbons from the deposit by washing the matrix, (reservoir rock), decrease in density, viscosity or plasticity of native hydrocarbons, without generating incompatibility problems such as those which can be created by the addition of fluids foreign to the deposit.
Même si la teneur en hydrocarbures légers de l'effluent naturel du gisement est faible, il se crée, après une durée plus ou moins longue, un volant de ceux-ci permettant d'assurer un débit régulier du/ou des puits, par recyclage permanent.Even if the light hydrocarbon content of the natural effluent from the deposit is low, after a more or less long duration, a flywheel is created which allows regular flow to / from the wells to be ensured by recycling permanent.
Même si les installations décrites ci-dessus sont d'un coût relativement élevé, elles permettent pour certaines conditions d'isolement de champs, une économie importante, comparera l'amenée de fluides étrangers. Even if the installations described above are relatively high cost, they allow for certain conditions of isolation of fields, a significant saving, will compare the supply of foreign fluids.

Claims

REVENDICATIONS 1.- Procédé de production de gisements d'hydrocar bures, notamment dans le but d'améliorer la récupération de l'effluent, de faciliter son acheminement jusqu'aux installations de traitement ainsi que son trai tement, caractéx-isé en ce qu'il consiste à condenser, au moins en partie, au sortir du puits de production, les gaz condensables de l'effluent, même si ils ne représentent qu'un faible pourcentage du débit de l'effluent, et à réinjecter le condensât, en phase liquide, dans le susdit puits de production, ou éventuellement les autres puits de production et/ou le gisement. CLAIMS 1.- Process for the production of hydrocarbon deposits, in particular with the aim of improving the recovery of the effluent, of facilitating its transportation to the treatment facilities as well as its treatment, characterized in that '' it consists in condensing, at least in part, leaving the production well, the condensable gases of the effluent, even if they represent only a small percentage of the flow of the effluent, and in reinjecting the condensate, liquid phase, in the above production well, or possibly the other production wells and / or the deposit.
2.- Procédé selon la revendication 1, caractérisé en ce qu'il comprend successivement un réchauffage de l'effluent (bloc 3) provenant du puits, à une tempéra ture favorable à la séparation des phases liquides et gazeuses et à la ségrégation des constituants huile, eau et éventuellement solides dans au moins une unité de séparation (4), la séparation des phases gazeuses, liquides et solides de l'effluent, la compression, le refroidissement et éventuellement la déshydratation de la phase gazeuse (bloc 5), avec récupération des condensats hydrocarbures (bloc 8) et la réinjection des condensats en phase liquide, dans le puits (2) ou dans le gisement. 2.- Method according to claim 1, characterized in that it successively comprises a reheating of the effluent (block 3) coming from the well, at a temperature favorable for the separation of the liquid and gaseous phases and for the segregation of the constituents oil, water and possibly solids in at least one separation unit (4), separation of the gaseous, liquid and solid phases of the effluent, compression, cooling and possibly dehydration of the gaseous phase (block 5), with recovery of hydrocarbon condensates (block 8) and reinjection of the condensates in the liquid phase, into the well (2) or into the deposit.
3. - Procédé selon la revendication 2, caractérisé en ce qu'il comprend en outre, le traitement de l'eau huileuse résiduelle provenant de la séparation des phases gazeuses, liquides et solides de l'effluent (bloc 4) et/ou de la déshydratation de la phase gazeuse (bloc 5), de manière à écrémer l'huile résiduelle. 3. - Method according to claim 2, characterized in that it further comprises, the treatment of residual oily water from the separation of the gaseous, liquid and solid phases of the effluent (block 4) and / or dehydration of the gas phase (block 5), so as to skim off the residual oil.
4.- Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, en outre, la réfrigération des gaz résiduels (bloc 8) provenant de la compression, le refroidissement et la déshydratation éventuelle de la phase gazeuse (bloc 5), la récupération des condensats froids provenant de cette réfrigération (bloc 9) et l'injection, après réchauffage éventuel (bloc 13), dans le ou les puits (2) et/ou le gisement (1).4.- Method according to one of the preceding claims, characterized in that it further comprises the refrigeration of residual gases (block 8) from compression, cooling and possible dehydration of the gas phase (block 5 ), the recovery of cold condensates from this refrigeration (block 9) and injection, after possible reheating (block 13), into the well (s) (2) and / or the deposit (1).
5.- Procédé selon l'une des revendications précédentes, caractérise en ce qu'il comprend, en outre, une compression complémentaire des gaz résiduels (bloc 11) restant après réfrigération des gaz résiduels (bloc 8) et l'injection de ces gaz résiduels dans les puits (2) et/ou le gisement (1).5.- Method according to one of the preceding claims, characterized in that it further comprises, a complementary compression of the residual gases (block 11) remaining after refrigeration of the residual gases (block 8) and the injection of these gases residual in the wells (2) and / or the deposit (1).
6.- Installation de production pour la mise en application du procédé selon l'une des revendications précédentes. 6.- Production installation for the implementation of the method according to one of the preceding claims.
PCT/FR1982/000161 1981-10-06 1982-10-05 Extraction from oil fields with reinjection of separated materials WO1983001273A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR8207912A BR8207912A (en) 1981-10-06 1982-10-05 EXTRACTION OF PETROLEUM STORES WITH THE RE-INJECTION OF SEPARATE MATERIALS
AU89589/82A AU8958982A (en) 1981-10-06 1982-10-05 Procede de production de gisement d'hydrocarbure avec reinjection d'effluents dans le gisement ou dans le ou les puits et installation pour la mise en oeuvre dudit procede
DE8282902906T DE3268173D1 (en) 1981-10-06 1982-10-05 Extraction from oil fields with reinjection of separated materials

Applications Claiming Priority (2)

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FR81/18797811006 1981-10-06
FR8118797A FR2514071B1 (en) 1981-10-06 1981-10-06 PROCESS FOR PRODUCING HYDROCARBON DEPOSITS WITH INJECTION OF EFFLUENTS INTO THE DEPOSIT OR IN THE WELL (S) AND INSTALLATION FOR CARRYING OUT SAID METHOD

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BR (1) BR8207912A (en)
DE (1) DE3268173D1 (en)
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WO (1) WO1983001273A1 (en)

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EP0141542A2 (en) * 1983-10-08 1985-05-15 David Patrick James Miller A downhole tool
US5139088A (en) * 1989-09-06 1992-08-18 Shell Oil Company Method of inhibiting asphalt precipitation in an oil production well
WO1999031198A2 (en) * 1997-12-18 1999-06-24 Dogadin Oleg V Plant for removing carbon dioxide from gases and method for the exploitation of said plant
GB2371817A (en) * 2000-05-31 2002-08-07 Ingen Process Ltd Method of providing artificial lift in a well
GB2377711A (en) * 2001-07-20 2003-01-22 Ingen Process Ltd Thinning of crude oil in a bore well

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FR2545533B2 (en) * 1983-05-06 1986-12-26 Chaudot Gerard INSTALLATION FOR THE PRODUCTION OF HYDROCARBON DEPOSITS WITH INJECTION OF EFFLUENTS INTO THE DEPOSIT OR IN THE WELL (S) AND METHOD FOR THE IMPLEMENTATION OF THIS INSTALLATION
NO311103B1 (en) * 2000-02-08 2001-10-08 Jon Grepstad Process for facilitating the separation of a crude oil stream and aqueous phase
NO315990B1 (en) * 2000-08-31 2003-11-24 Abb Research Ltd Method and system for injecting gas into a reservoir
MX2018011641A (en) 2016-03-30 2019-01-10 Exxonmobil Upstream Res Co Self-sourced reservoir fluid for enhanced oil recovery.

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EP0141542A2 (en) * 1983-10-08 1985-05-15 David Patrick James Miller A downhole tool
EP0141542A3 (en) * 1983-10-08 1986-02-12 David Patrick James Miller A downhole tool
US5139088A (en) * 1989-09-06 1992-08-18 Shell Oil Company Method of inhibiting asphalt precipitation in an oil production well
WO1999031198A2 (en) * 1997-12-18 1999-06-24 Dogadin Oleg V Plant for removing carbon dioxide from gases and method for the exploitation of said plant
WO1999031198A3 (en) * 1997-12-18 1999-09-10 Dogadin Oleg V Plant for removing carbon dioxide from gases and method for the exploitation of said plant
GB2371817A (en) * 2000-05-31 2002-08-07 Ingen Process Ltd Method of providing artificial lift in a well
GB2377711A (en) * 2001-07-20 2003-01-22 Ingen Process Ltd Thinning of crude oil in a bore well

Also Published As

Publication number Publication date
DE3268173D1 (en) 1986-02-06
EP0089986B1 (en) 1985-12-27
OA09004A (en) 1991-03-31
NO832008L (en) 1983-06-03
EP0089986A1 (en) 1983-10-05
FR2514071B1 (en) 1986-09-26
BR8207912A (en) 1983-09-13
FR2514071A1 (en) 1983-04-08

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