WO2012028910A1 - Système synchronisé de production de pétrole brut par combustion in situ - Google Patents

Système synchronisé de production de pétrole brut par combustion in situ Download PDF

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Publication number
WO2012028910A1
WO2012028910A1 PCT/IB2011/000975 IB2011000975W WO2012028910A1 WO 2012028910 A1 WO2012028910 A1 WO 2012028910A1 IB 2011000975 W IB2011000975 W IB 2011000975W WO 2012028910 A1 WO2012028910 A1 WO 2012028910A1
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WO
WIPO (PCT)
Prior art keywords
well
wells
combustion
producing
synchronizing
Prior art date
Application number
PCT/IB2011/000975
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English (en)
Spanish (es)
Inventor
Ronald Pantin
Luis Andres Rojas
Mkac Fuenmayor
Original Assignee
Pacific Rubiales Energy Corp.
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 Pacific Rubiales Energy Corp. filed Critical Pacific Rubiales Energy Corp.
Priority to US13/820,056 priority Critical patent/US20130206384A1/en
Priority to CA2809204A priority patent/CA2809204C/fr
Publication of WO2012028910A1 publication Critical patent/WO2012028910A1/fr

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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
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
    • 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
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • E21B43/243—Combustion in situ

Definitions

  • a synchronized crude oil production system using the in-situ combustion process that uses the measurement, monitoring and control of real-time operational conditions comprising at least one injector well (1) and at least one producing well (2) and at least one inclined synchronizing well (3), characterized in that the tip of the at least one producing well (2) and that of the at least one inclined synchronizing well (3) found within the reservoir have the tip of the
  • the pipe has an outward orientation with respect to the injector well (1), characterized by comprising measuring, monitoring and control elements where, said measuring and monitoring elements send the signals and information detected by them, to one or more units of processing, joint or independent, that are responsible for evaluating, by an analytical model, the combustion conditions in the well-subsoil system and the advance of the combustion front and, depending on the results, synchronize the production operations, so that each well is operated or manipulated remotely in its control valves in order to influence the direction of travel of the combustion front.
  • Heavy crude oil or extra heavy crude oil is any type of crude oil with high densities that does not flow easily. It is called “heavy” because its API gravity is less than 21, 9 0 API.
  • the largest heavy oil reserve in the world is located north of the Orinoco River in Venezuela, but it is known that 30 or more countries have reserves of the same type. Canada has large reserves of heavy crude mainly in the provinces of Alberta and Saskatchewan. In this sense, different techniques have been developed in recent decades to efficiently and economically produce such deposits.
  • SAGD Steam Assisted Gravity Drainage
  • thermal energy allows the displacement of a considerable oil bank from the injector wells to the producing wells, mainly due to the reduction in the viscosity of the oil, the vaporization and the thrust of the gases formed in the combustion process.
  • this type of process has existed for many years, it has had some technical-operational difficulties that have discouraged its application, one of them is the control and monitoring of the combustion front, which directly affects the volumetric efficiency of sweeping and, by therefore, the recovery of the existing oil in the field.
  • Oxidation The combustion zone acts as a piston that moves fluids in front of the combustion front towards the producers.
  • Coking Oxygen combines with oil forming carbon dioxide and heat. The combustion reaction is maintained by injecting air and C0 2 released in the reservoir creates an effect of reducing water relative permeability, minimizing the mobility of this fluid with respect to oil.
  • Cracking The thermal cracking causes a deposit of coke in the fire front, generating in some cases, an improvement of the oil in the subsoil, the combustion gases vaporize the water, improve the displacement of the fluids and increase the sweep efficiency of the process.
  • the in situ combustion process has several benefits, mainly in reservoirs with high water saturation or direct influence of aquifers with strong hydraulic thrust: benefits due to the improvement of the oil mobility ratio.
  • water by reducing the water relative permeability, positively influence gravity segregation by generating a secondary layer of high pressure gas and reduction benefits oil viscosity by heating and miscibility of CO2 generated.
  • the saturation of residual oil is reduced and the saturation of irreducible water increases due to the increase in temperature as it has been reported in the oil literature, which increases the oil flow and decreases the water flow.
  • the main objective of the present invention is to provide a synchronized system of crude oil production using the in-situ combustion process that has elements of measurement, monitoring and control in real time, of the combustion front and, additionally , contemplate a geometry and type of wells that facilitate and make the management of monitoring and control operations of said combustion front more efficient.
  • Another objective of the present invention is to provide a synchronized system of production of crude oil by in-situ combustion that has a type of well identified as an inclined "synchronizer", also equipped with measuring and monitoring elements, which can fulfill different functions within of the system and make the combustion front control operations more efficient.
  • the main function of inclined synchronizing wells (3) is not only to produce a larger volume of hydrocarbons, but to complement the functions of measurement, monitoring and control of the combustion front. All this in order to make the process more efficient and obtain a greater recovery of hydrocarbon reserves.
  • Figure 1 Representation according to the state of the art of an arrangement for extracting crude oil from a reservoir by in-situ combustion, in which the two main areas of the well-subsoil system and the front that moves from the well are shown. injector 1 towards the horizontal producer 2. The combustion zone C and the area adjacent to the combustion front, non-combustion zone D.
  • Figure 2. Top view of an arrangement for extracting crude oil from a reservoir according to the state of the art in which an ideal theoretical displacement is presented for the combustion front of the well-subsoil system from an injector well 1 to the producing wells vertical 2.
  • the arrows indicate the direction of the combustion front.
  • Figure 3 Top view of an arrangement for extracting crude oil from a reservoir in which one of the many theoretical forms that the combustion front could have in the well-subsoil system, due to the irregular displacement of crude oil.
  • This figure seeks to highlight that in real life the combustion front is not homogeneous and this undoubtedly affects the productivity of the process, the volumetric efficiency of sweeping and therefore, the recovery of hydrocarbon reserves.
  • the arrows indicate the direction of the combustion front.
  • Figure 4a Top view of an arrangement for extracting crude oil from a well-subsoil system according to a first possible embodiment of the invention with producing wells inclined at the instant ti (referential), showing an irregular combustion front, under undesired operational conditions, without applying concepts of Synchronized Operations Management, "GSO" to monitor and control the combustion front and improve the efficiency of displacement or sweeping and recovery of hydrocarbon reserve.
  • GSO Synchronized Operations Management
  • Figure 4b - top view of an arrangement for removing oil from a well-ground system according to the embodiment presented in figure 4a at time t 2 ( for reference and later in time with respect to ti) showing a front uniform and optimal combustion under desired operational conditions, after the synchronization tasks by monitoring and control of the invention.
  • integrated Operations Management concepts have been applied to measure, monitor and control the combustion front.
  • the arrows indicate the direction of the combustion front.
  • Figure 5. Side view of the interior of the zone X of Figure 4b, where the relative position between the injector wells, inclined producers and synchronizers is observed, where a first possible configuration of the invention is highlighted with producing wells and synchronizers inclined Figure 6.
  • FIG. 6 Top view of an arrangement for extracting crude oil from a well-subsoil system according to a second possible embodiment of the invention in which multilateral wells are used, such as producers and strategically located inclined synchronizing wells.
  • This configuration of the multilateral producing wells and inclined synchronizers represents the optional configuration of the invention. Note that the direction of the multilateral section of the inclined producing and synchronizing wells is outward, that is, " outward " (by its English name). In this figure the arrows indicate the direction of the combustion front.
  • Figure 7. Side view of the interior of zone X of Figure 6, where the relative position between the injector wells, multilateral producers is observed and inclined synchronizers and the optional configuration of the invention is highlighted.
  • Figure 8. Top view of an arrangement for extracting crude oil from a well-subsoil system according to the optional modality of the invention showing a uniform and optimal combustion front under desired operational conditions, after the synchronization tasks by monitoring and control of the invention.
  • the arrows indicate the direction of the combustion front.
  • Figure 9.- Map that represents a reference deposit used to simulate an arrangement according to figure 6 in the invention where several layers, sands, oil from which oil is extracted are represented and the last layer represents a water zone or aquifer and from there is where the main source of water is produced.
  • Figure 10. Graph with the production behavior of the synchronizing wells (3a), (3b), (3c) and (3d), according to figure 9, in barrels per day as a function of time, obtained by simulation. These wells are usually useful to support producing wells in the extraction of crude.
  • Figure 11. Graph of estimated production of daily barrels as a function of time for multilateral wells 2a, 2b, 2c and 3d product of the referential simulation carried out.
  • the present invention proposes a synchronized arrangement of wells in an oil field that allows to measure, monitor and control the parameters of the in-situ combustion front to achieve a more efficient hydrocarbon extraction from the well-subsoil system.
  • the in-situ combustion extraction process In order for the in-situ combustion extraction process to be efficient, mainly in reservoirs that have a strong hydraulic thrust, it is necessary to improve the water / oil mobility ratio, by reducing the relative permeability of the water with respect to oil and the reduction in oil viscosity due to the effect of the heat generated in the reservoir, taking advantage of the positive effects of the miscibility of CO 2 in the oil. The result will be, a better efficiency of displacement or volumetric sweeping and therefore, a greater recovery of hydrocarbon reserves.
  • a combustion oil recovery system is shown in Figure 2, with an arrangement of 5 inverted wells, which by way of reference, comprises a vertical injector well (1) and four vertical producing wells (2 ).
  • the injector well (1) is located inside the arrangement, inside the area defined by the producing wells (2).
  • the function of the injector well (1) is to provide air, oxygen or a mixture of oxidizing gases, to displace the oil in its area of influence and maintain the combustion reaction in the reservoir.
  • the zone (A) represents the limits of the combustion front within the reservoir and the arrows on it represent the theoretical direction of the front as it advances to reach the producing wells (2) and, in this way, extract the crude of the site.
  • zone A In real life, the combustion front does not travel in a homogeneous manner, so that, as time goes by, the shape of zone A generally moves away from being symmetrical.
  • a referential example of a combustion oil recovery system is shown in Figure 3 where zone B represents a combustion front close to reality, when no forecasts are taken to control it.
  • zone B represents a combustion front close to reality, when no forecasts are taken to control it.
  • the combustion front is amorphous and, consequently, the crude oil that is in the vicinity of the producing well (2c) cannot be extracted from the reservoir, considerably affecting the productivity of the producing wells, the volumetric efficiency of sweeping and the recovery of hydrocarbon reserves.
  • the synchronized crude oil production system using the in-situ combustion process of the present application proposes: to include elements of measurement, monitoring and control in vertical injection wells (1), producers (2) present in a well arrangement and , in addition, the introduction of a new type of well called "synchronizing well” (3), inclined, which includes, in turn, measuring elements, variables of formation pressure and temperature, among other parameters, at different levels in the well, also, for monitoring and control of the gases generated by the combustion front
  • a system according to the invention comprises at least one injector well (1), at least one producing well (2) and at least one synchronizing well (3).
  • four inclined synchronizing wells (3) have been included in a referential manner in an arrangement comprising an injector well (1) and four inclined producing wells (2).
  • each well (s) injector (1), producers (2) and synchronizers (3) have elements of measurement, monitoring and control of the combustion front (zone B) and these are related to the functions provided Each well in the arrangement. In general, through the injector well
  • the inclined synchronizing wells (3) duly instrumented with remote pressure and temperature sensors, among others, will have several functions: First, they will serve as support or support for the wells producers (2) to measure, monitor and control the combustion front, through synchronized operations management; secondly, they will serve as additional producers and, thirdly, they can serve as wells for the removal of unwanted gases in the well-subsoil system, when required. Finally, these inclined synchronizing wells (3) could be converted into oxidizing gas injectors, if the process conditions require it and allow it. Their construction is done in such a way that it is technically feasible to do so (see figures 5 and 7).
  • measurement and monitoring elements to be installed are pressure and temperature sensors, which operate in real time from a distance, however, other control elements of the combustion front are not discarded, such as 4D seismic or flow or flow registers. images installed in some or all wells. Said measurement and monitoring elements send the signals and information collected by them to a processing unit, which is responsible for assessing the combustion conditions of the subsoil system and the advance of the combustion front. If the measurements obtained in each type of well are within the desired operational conditions, the injector wells (1), producers (2) and inclined synchronizing wells (3) will continue their basic functions within the arrangement.
  • the "Synchronized Operations Management, GSO” process is activated, which consists in synchronizing the production operations in such a way that each well or group of them, is remotely manipulated in its control valves to influence the direction of travel of the combustion front and standardize it.
  • GSO Synchronization Operations Management
  • These instructions will consist of the synchronized and remote management of the production control valves of said wells, forcing the modification of the production pattern and therefore, the advance of the combustion front, redirecting it towards the desired direction.
  • the operator could even send instructions to the injector well to decrease, increase or regulate the amount of oxidizing gas it is injecting into the subsoil system.
  • the instructions could also be given to completely close wells, even operate the water injection systems to control any abnormal situation that occurs in a well or in the same reservoir.
  • the inclined synchronizing wells (3) can act as relief wells or valves in case the concentration of gases within the reservoir exceeds the permitted values; in that case, the control unit would send an instruction to activate the gas relief or extraction function.
  • the number and geometry of the injector (1), producer (2) and synchronizer (3) wells inclined in the arrangement of the system of the invention, will depend on the type of reservoirs, type of arrangements and conditions of exploitation of the reservoir.
  • the injector (1), producer (2) and inclined synchronizer (3) wells are in a particular geometric arrangement according to the requirements of the well-subsoil system to be produced.
  • each well of the arrangement of Fig. 4a and 4b, whether injector (1), inclined producer (2) or inclined synchronizers (3), will be connected to one or more joint or independent processing units.
  • the processing unit is able to interpret the measurements of each well and send the signals so that the operator takes the necessary corrective measures.
  • the invention proposes an intelligent measurement, monitoring and control system whose stages include: assessing in real time and constantly the conditions of the in-situ combustion reaction in the well-subsoil system (in different duly identified points of interest), sending the results to the processing unit, analyzing the independent evaluations for each of the wells and, based on the results, automatically determining the corrections necessary for the use of a computer program or computer model Uniform the combustion front.
  • the injection wells (1) are vertical
  • the production wells (2) are of the inclined type
  • the synchronizing wells (3) are inclined as shown in Figure 5.
  • This configuration It allows greater coverage of the area of the well-subsoil system to be produced, making the monitoring process and, therefore, the production process more efficient.
  • the use of vertical producing wells in general, has the limitation that the function of the well in question is limited to a single point of the well and / or the area adjacent to it.
  • this preferential configuration of the invention considers the use of vertical injector wells (1) and inclined producers (2), in order to access a specific region considered relevant to the well-subsoil system.
  • synchronizing wells (3) strategically located within the arrangement of the invention, its configuration is inclined, which allows a better position with greater flow area and orientation towards the points inside the well-subsoil system that is they have considered relevant for monitoring.
  • the injection wells (1) are vertical
  • the production wells (2) are of the multilateral type
  • the synchronizing wells (3) are inclined as shown in Figures 6 and 7.
  • This configuration allows a greater coverage of the area of the well-subsoil system to be produced, making the monitoring process and, therefore, the production process more efficient.
  • This preferential configuration of the invention considers the use of injector wells (1) vertical and producers (2) multilateral, so as to cover a greater area of the subsoil system.
  • inclined synchronizing wells (3) strategically located within the arrangement of the invention, its configuration is always inclined, which allows a better position with greater flow area and orientation towards the points inside the well-subsoil system. which have been considered relevant for monitoring.
  • the relative position of the synchronizing wells (3) inclined in the arrangement is relatively close to the producing well (2) and, if there is more than one producing well (2), it will preferably be in the area adjacent to the two closest producing wells (2).
  • synchronizing wells (3) will be in an equidistant and strategic position from the geological point of view, to the injection well and producing wells (2), and placed inside the Z zone (shown in figures 4a, 4b, 5, 6, 7 and 8).
  • producing wells (2) and inclined synchronizers (3) In the case of the producing wells (2) and inclined synchronizers (3), they will be directed so that the tip of the producing wells (2) and that of the inclined synchronizing wells (3) that are within the reservoir it has an outward orientation with respect to the injector well (1), that is, an "outward" orientation.
  • producing wells (2) will have a single inclined or multilateral portion, however, they are considered to have a substantially vertical section and / or one or more inclined sections, which will make them multilateral.
  • the number of producing wells (2) and inclined synchronizers (3) may vary depending on the characteristics of the reservoir and the situation of existing wells in which the field is at the beginning of the on-site combustion process.
  • EXAMPLE NUMERICAL SIMULATION
  • CMS STARS numerical simulator of the company CMG in one of the Pacific Rubiales Energy fields.
  • STARS includes the multiphase flow of oil, water and gas, heat transfer, compositional changes and chemical physical reactions of kinetics that are considered to occur in the field during in situ combustion.

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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)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Incineration Of Waste (AREA)

Abstract

L'invention concerne un système synchronisé de production de pétrole brut utilisant le procédé de combustion in situ, faisant intervenir la mesure, la surveillance et le contrôle des conditions de fonctionnement en temps réel, et comprenant au moins un puits d'injection (1), au moins un puits de production (2) et au moins un puits de synchronisation (3) incliné, la pointe d'au moins un puits de production (2) et celle d'au moins un puits de synchronisation (3) étant orientées vers l'extérieur par rapport au puits d'injection (1). Ledit système comprend les éléments de mesure, de surveillance et de contrôle envoyant les signaux et les informations détectées par ceux-ci à une ou plusieurs unités de traitement qui, ensemble ou indépendamment, évaluent à l'aide d'un modèle analytique, les conditions de combustion et l'avancée du front de combustion et, en fonction des résultats, synchronisent les opérations de production, avec actionnement ou manipulation à distance de chaque puits au niveau de ses vannes de régulation.
PCT/IB2011/000975 2010-08-31 2011-05-07 Système synchronisé de production de pétrole brut par combustion in situ WO2012028910A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/820,056 US20130206384A1 (en) 2010-08-31 2011-05-07 Synchronised system for the production of crude oil by means of in-situ combustion
CA2809204A CA2809204C (fr) 2010-08-31 2011-05-07 Systeme synchronise de production de petrole brut par combustion in situ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CO10107350A CO6310134A1 (es) 2010-08-31 2010-08-31 Sistema sincronizado de produccion de crudo por combustion in situ
CO10-107350 2010-08-31

Publications (1)

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WO2012028910A1 true WO2012028910A1 (fr) 2012-03-08

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CA (1) CA2809204C (fr)
CO (1) CO6310134A1 (fr)
WO (1) WO2012028910A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11286773B2 (en) * 2020-03-11 2022-03-29 Neubrex Co., Ltd. Using fiber-optic distributed sensing to optimize well spacing and completion designs for unconventional reservoirs

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US3472318A (en) * 1967-06-29 1969-10-14 Texaco Inc Hydrocarbon production by secondary recovery
US4120354A (en) * 1977-06-03 1978-10-17 Occidental Oil Shale, Inc. Determining the locus of a processing zone in an in situ oil shale retort by pressure monitoring
US5016710A (en) * 1986-06-26 1991-05-21 Institut Francais Du Petrole Method of assisted production of an effluent to be produced contained in a geological formation
US5211230A (en) * 1992-02-21 1993-05-18 Mobil Oil Corporation Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion
US5934371A (en) * 1995-02-09 1999-08-10 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US6263965B1 (en) * 1998-05-27 2001-07-24 Tecmark International Multiple drain method for recovering oil from tar sand
EP1868748A1 (fr) 2005-04-07 2007-12-26 ARVEDI, Giovanni Processus et systeme de fabrication de bandes et de feuilles metalliques sans rupture entre le moulage continu et le laminage
WO2009065840A1 (fr) 2007-11-22 2009-05-28 Siemens Vai Metals Technologies Gmbh & Co Procédé de laminage austénitique continu d'une bande fabriquée lors d'un processus de coulée continu et dispositif de coulée et de laminage combiné destiné à l'exécution du procédé

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US3997004A (en) * 1975-10-08 1976-12-14 Texaco Inc. Method for recovering viscous petroleum
US7841404B2 (en) * 2008-02-13 2010-11-30 Archon Technologies Ltd. Modified process for hydrocarbon recovery using in situ combustion

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472318A (en) * 1967-06-29 1969-10-14 Texaco Inc Hydrocarbon production by secondary recovery
US4120354A (en) * 1977-06-03 1978-10-17 Occidental Oil Shale, Inc. Determining the locus of a processing zone in an in situ oil shale retort by pressure monitoring
US5016710A (en) * 1986-06-26 1991-05-21 Institut Francais Du Petrole Method of assisted production of an effluent to be produced contained in a geological formation
US5211230A (en) * 1992-02-21 1993-05-18 Mobil Oil Corporation Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion
US5934371A (en) * 1995-02-09 1999-08-10 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US6263965B1 (en) * 1998-05-27 2001-07-24 Tecmark International Multiple drain method for recovering oil from tar sand
EP1868748A1 (fr) 2005-04-07 2007-12-26 ARVEDI, Giovanni Processus et systeme de fabrication de bandes et de feuilles metalliques sans rupture entre le moulage continu et le laminage
WO2009065840A1 (fr) 2007-11-22 2009-05-28 Siemens Vai Metals Technologies Gmbh & Co Procédé de laminage austénitique continu d'une bande fabriquée lors d'un processus de coulée continu et dispositif de coulée et de laminage combiné destiné à l'exécution du procédé

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Publication number Publication date
CA2809204C (fr) 2017-02-28
CO6310134A1 (es) 2011-08-22
CA2809204A1 (fr) 2012-03-08
US20130206384A1 (en) 2013-08-15

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