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WO2018165747A1 - Extraction de méthane de gisement houiller et capture de carbone - Google Patents

Extraction de méthane de gisement houiller et capture de carbone Download PDF

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Publication number
WO2018165747A1
WO2018165747A1 PCT/CA2018/050293 CA2018050293W WO2018165747A1 WO 2018165747 A1 WO2018165747 A1 WO 2018165747A1 CA 2018050293 W CA2018050293 W CA 2018050293W WO 2018165747 A1 WO2018165747 A1 WO 2018165747A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon dioxide
methane
coal bed
coal
source
Prior art date
Application number
PCT/CA2018/050293
Other languages
English (en)
Inventor
Mackenzie Millar
Jose Lourenco
Original Assignee
1304342 Alberta Ltd.
1304338 Alberta Ltd.
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
Priority claimed from CA2960997A external-priority patent/CA2960997A1/fr
Application filed by 1304342 Alberta Ltd., 1304338 Alberta Ltd. filed Critical 1304342 Alberta Ltd.
Publication of WO2018165747A1 publication Critical patent/WO2018165747A1/fr

Links

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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • E21B41/0057—Disposal of a fluid by injection into a subterranean formation
    • E21B41/0064—Carbon dioxide sequestration
    • 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
    • E21B43/006—Production of coal-bed methane
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/164—Injecting CO2 or carbonated water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/24—Hydrocarbons
    • B01D2256/245—Methane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells

Definitions

  • FIELD This relates to a process that displaces and extracts methane from a coal bed by storing carbon dioxide delivered by compression such as from a pipeline such as the Alberta Carbon Trunk Line.
  • the pipeline delivered carbon dioxide stream is injected into coal beds for sequestration and storage BACKGROUND
  • Coal bed methane extraction provides an alternative method to recover energy from coal in a safe, efficient and environmentally acceptable manner.
  • Coal bed methane extraction is typically employed in un-mineable coal beds.
  • Conventional coal bed methane recovery methods are based on reservoir pressure reduction, where methane is desorbed from the coal surface by reducing the reservoir pressure.
  • wells are drilled into a coal bed.
  • the methane is extracted by desorption from coal surfaces where the reservoir pressure is first decreased by dewatering.
  • the decrease in pressure allows the methane to desorb from the coal and flow as a gas to the well.
  • the gas is processed at surface and compressed in a natural gas pipeline network for delivery to markets. More recently, to enhance coal bed methane extraction new methods have been developed. As described by U.S. patent no. 5,085,274 (Puri et al.) entitled “Recovery of methane from solid carbonaceous subterranean of formations", U.S. patent no. 5,332,036 (Shirley et al.) entitled “Method of recovery of natural gases from underground coal formations" and U.S. patent no.
  • a method and system for safely storing carbon dioxide, and for extracting stored methane and other volatile hydrocarbons in a coal bed injects carbon dioxide into a coal bed in a condition to be sequestered and stored, and to extract stored methane in the coal bed.
  • the conditions under which the carbon dioxide is injected will depend on one or more of: coal bed depth relative to pressure and methane extraction relative to temperature.
  • the extracted methane and other volatile hydrocarbons may then be recovered, processed and routed to natural gas pipeline distribution systems.
  • coal As coal has a stronger affinity for carbon dioxide, it establishes an adsorption/desorption process where carbon dioxide displaces and frees the methane from the coal bed to be recovered, processed and distributed to natural gas pipeline distribution systems.
  • the objective of the method and system is to permit carbon dioxide to be sequestered and stored.
  • the proposed Alberta Carbon Trunk Pipeline may be used to transport carbon dioxide recovered due to local carbon-generating activities. The carbon dioxide may then be injected into coal beds to establish an adsorption/desorption process where carbon dioxide is stored in the coal bed by displacing methane and other volatile hydrocarbons, which may then be recovered and processed, such as for pipeline transport and distribution.
  • carbon dioxide recovered and delivered by pipeline is injected at desired pressure and temperature conditions into a coal bed for carbon dioxide adsorption and methane desorption, such that carbon dioxide is stored, and methane is extracted from the coal bed.
  • the process comprises the following steps:
  • a method of storing carbon dioxide in a coal bed by absorption to coal in the coal bed, and to desorb, displace and extract methane stored in the coal bed comprising the steps of:
  • a method of carbon capture and methane production comprising the steps of:
  • the method may comprise one or more of the following features: the methane may be extracted from the coal bed by a production well, and at least one of the injection well and the production well comprises slots; the source of carbon dioxide may be a pipeline that transports carbon dioxide under pressure; the source of carbon dioxide may comprise at least 50% carbon dioxide gas, at least 80% carbon dioxide gas, or at least 95% carbon dioxide gas; the pressure and temperature of the carbon dioxide may be selected to be optimized for adsorption to coal in the coal bed; the extracted methane may be extracted and processed for distribution; and providing the supply of carbon dioxide may comprise compressing the carbon dioxide gas in a compressor; carbon dioxide may be injected after production of methane has ceased to store additional carbon dioxide in the coal bed.
  • the process described herein may be used to store carbon dioxide and extract stored methane in a coal bed.
  • the extracted methane is processed and distributed as a fossil fuel derived from coal.
  • the process stores carbon dioxide and extracts stored methane in coal beds, thus contributing to the production of clean abundant energy from a very concentrated carbon fuel.
  • the process is considered to be clean since coal can store two or more moles of carbon dioxide for every mole of methane displaced.
  • Coal can store up to 10 moles of carbon dioxide per mole of methane stored in coal, thus making it a carbon negative process.
  • carbon dioxide is first delivered by a pipeline, such as the Alberta Carbon Trunk Line, and injected for adsorption into a coal bed for storage and desorption of stored methane from the coal bed.
  • the desorbed and extracted coal bed methane may then be processed for distribution.
  • the process may be used to safely store carbon dioxide in a coal bed by adsorption and also, by desorption, extract and process the coal bed hydrocarbons for distribution as a result of the carbon dioxide being injected.
  • FIG. 1 is a schematic diagram of a pipeline delivered carbon dioxide stream injected into a coal bed for storage by adsorption and methane extraction by desorption. It includes a gas processing unit to treat the extracted coal bed hydrocarbons for distribution.
  • the method described may be used to safely store carbon dioxide that is produced, recovered and transported by pipeline in such as may occur in a carbon capture process by adsorbing carbon dioxide into a coal bed.
  • a coal bed may also be referred to as a coal seam, or other deposit of coal that is accessible from surface, such as by a well drilled from surface.
  • the hydrocarbons that may be produced form a coal bed are referred to herein as methane or coal bed methane, although the methane may also include a relatively small proportion of other, heavier hydrocarbons or other gases as is known in the art with respect to coalbed methane gas.
  • the source of carbon dioxide is preferably a source of captured carbon dioxide, such as may be obtained from a power plant or other industrial activity.
  • the source of carbon dioxide is preferably at least 90% carbon dioxide gas, and preferably more, such as 95% or more.
  • the actual composition of the source of carbon dioxide gas may vary depending on the source and any applicable regulations, but may also include other gases, such as oxygen, nitrogen, nitrogen-based gases, other carbon-based gases, etc.
  • Coal can store two or more moles of carbon dioxide per mole of methane stored in coal. When carbon dioxide is adsorbed in coal, the methane stored in coal is desorbed and freed to be extracted and processed.
  • the disclosed method provides an alternative solution to safely store carbon dioxide.
  • the Alberta Carbon Trunk Line to be commissioned in 2017 was built to collect and transport carbon dioxide produced in Alberta at major industrial sites for storage in deep saline aquifers and/or for use in EOR (enhanced oil recovery) operations.
  • the proposed method offers a different approach in a unique and innovative variant to store carbon dioxide that may become available from resources such as the Alberta Carbon Trunk Line and other sources of carbon dioxide.
  • the system here described takes advantage of safely storing carbon dioxide in coal beds by an adsorption/desorption process that also produces methane stored in the same coal beds.
  • Coal beds have an affinity to absorb carbon dioxide and hence are an ideal storage resource. Furthermore, the injection of carbon dioxide into a coal bed can be used to establish an adsorption/desorption process that frees the methane and other volatile hydrocarbons stored in coal to be recovered, processed and distributed. [0019] The method described herein provides a process that uses carbon dioxide that may be produced, recovered and transported for storage in coal fields and to extract stored methane and other volatile hydrocarbons from the coal beds. Carbon dioxide recovered from industrial activities and transported by, for example a pipeline such as the Alberta Carbon Trunk Line, may be injected into coal beds to enhance coal bed methane extraction while storing the carbon dioxide, unlike the pipeline proposed practice of compressing it into saline aquifers or oil wells.
  • Coal bed methane extraction works by replacing sorbed methane molecules with more strongly sorbed carbon dioxide molecules.
  • the process is beneficial as coal selectivity of carbon dioxide to methane is greater than 2 to 1, coal adsorbs and stores 2 molecules or more of carbon dioxide for every molecule of methane displaced, and the carbon dioxide remains adsorbed in the coal and displaces the methane.
  • the extracted methane may then be captured, processed and routed to natural gas pipeline distribution systems.
  • the proposed method meets a need to first store carbon dioxide safely and secondly to recover coal stored methane gas and volatile hydrocarbons from a coal bed economically.
  • the composition of the carbon dioxide gas may vary, depending on the sources available.
  • FIG. 1 depicts a preferred method of storing carbon dioxide produced, recovered and transported by a resource such as the Alberta Carbon Trunk Line from industrial plants in Alberta.
  • Carbon dioxide is transported and distributed by Alberta Carbon Trunk Line through stream 1 into a coal bed site and compressed, if required, by compressor 2 to meet optimum pressure conditions. If the carbon dioxide is at a suitable pressure, the stream of carbon dioxide may bypass the compressor via an optional bypass valve 14. In some cases, if it is known that the carbon dioxide will be at a suitable pressure and temperature, one or both of the compressor 2 and heat exchanger 4 may be omitted.
  • the pressurized carbon dioxide stream 3 flows through a fin fan heat exchanger 4 to meet coal bed optimum temperature conditions for adsorption of carbon dioxide and desorption of methane stored in coal bed.
  • the optimal pressure and temperature conditions may be determined based on coal bed depth and methane production flow. By varying the temperature and pressure conditions, a range of acceptable conditions may be defined. This range may vary from well to well. For example, as the depth of the well increases, the pressure the carbon dioxide will be increased, as there must be sufficient pressure in order to be able to inject the carbon dioxide into the well.
  • the pressure and temperature controlled carbon dioxide stream 5 is injected into well 6 and distributed through slots 7 into the coal bed 8.
  • the injected pressure and temperature controlled carbon dioxide stream is adsorbed in coal bed 8 and the desorbed methane and other volatile hydrocarbon gases are displaced across the coal bed 8 and through slots 9 into production well 10.
  • the extracted methane is routed through production well 10 and through stream 11 into gas processing unit 12.
  • the processed gas exits gas processing unit 12 through stream 13 to gas pipeline for distribution.
  • FIG. 1 depicts a vertical well, the actual shape or configuration of the well that is drilled into coal bed 8 may vary.
  • the well may be formed using directional drilling to have a horizontal or angled section, multiple wells may be drilled into the same formation, etc.
  • the well 6 is shown with a liner having slots 7, the liner may have different openings, or a different way of distributing carbon dioxide within the coal bed may be used.
  • the process may be implemented by: first, storing carbon dioxide delivered from the Alberta Carbon Trunk Line by adsorption in a coal bed; second, desorbing and extracting stored methane from the coal bed; and third, processing and distributing the extracted coal bed methane.
  • This process allows an efficient use of an abundant supply of recovered carbon dioxide for safe storage and simultaneous extraction of stored methane from the coal bed by establishing an adsorption/desorption process where carbon dioxide displaces and frees methane stored in a coal bed to flow into a production well.
  • This process provides for coal beds to be a safe storage resource for carbon dioxide and to recover a clean source of energy from coal in the form of methane.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

L'invention concerne un procédé d'établissement d'un processus d'adsorption/désorption par injection de dioxyde de carbone dans un gisement houiller et comprend l'injection d'un flux de dioxyde de carbone dans un gisement houiller de telle sorte qu'il est adsorbé par le gisement houiller et de telle sorte que le méthane stocké dans le gisement houiller est désorbé et déplacé. Le méthane déplacé est extrait et traité pour la distribution.
PCT/CA2018/050293 2017-03-16 2018-03-12 Extraction de méthane de gisement houiller et capture de carbone WO2018165747A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA2,960,997 2017-03-16
CA2960997A CA2960997A1 (fr) 2017-03-16 2017-03-16 Extraction de methane de gisement de houille et capture de carbone
CA2962169A CA2962169A1 (fr) 2017-03-16 2017-03-28 Extraction de methane de gisement de houille et capture de carbone
CA2,962,169 2017-03-28

Publications (1)

Publication Number Publication Date
WO2018165747A1 true WO2018165747A1 (fr) 2018-09-20

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Application Number Title Priority Date Filing Date
PCT/CA2018/050293 WO2018165747A1 (fr) 2017-03-16 2018-03-12 Extraction de méthane de gisement houiller et capture de carbone

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Country Link
WO (1) WO2018165747A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810259A (zh) * 2020-05-26 2020-10-23 新奥科技发展有限公司 二氧化碳利用的方法及系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011081665A1 (fr) * 2009-12-28 2011-07-07 Enis Ben M Séquestration de co2 et libération de gaz naturel à partir de formations de charbon et de schiste gazéifère
WO2012092404A1 (fr) * 2010-12-28 2012-07-05 Enis Ben M Procédé et appareil utilisant des cycles de pression et co2 liquide froid pour libérer un gaz naturel de formations de charbon et de schiste
CA2920656A1 (fr) * 2016-02-11 2017-08-09 1304342 Alberta Ltd. Methode d'extraction de methane d'une couche de houille au moyen de dioxyde de carbone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011081665A1 (fr) * 2009-12-28 2011-07-07 Enis Ben M Séquestration de co2 et libération de gaz naturel à partir de formations de charbon et de schiste gazéifère
WO2012092404A1 (fr) * 2010-12-28 2012-07-05 Enis Ben M Procédé et appareil utilisant des cycles de pression et co2 liquide froid pour libérer un gaz naturel de formations de charbon et de schiste
CA2920656A1 (fr) * 2016-02-11 2017-08-09 1304342 Alberta Ltd. Methode d'extraction de methane d'une couche de houille au moyen de dioxyde de carbone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HAMELINCK ET AL.: "Potential for CO 2 sequestration and Enhanced Coalbed Methane production in the Netherlands", March 2001 (2001-03-01), XP055540367, Retrieved from the Internet <URL:https://dspace.library.uu.nl/bitstream/handle/1874/8062/e2001-07.pdf?seauence=1> *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111810259A (zh) * 2020-05-26 2020-10-23 新奥科技发展有限公司 二氧化碳利用的方法及系统

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