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WO2007035075A1 - Procede d'extraction de matiere premiere d'hydrocarbures et installation destinee a sa mise en oeuvre - Google Patents

Procede d'extraction de matiere premiere d'hydrocarbures et installation destinee a sa mise en oeuvre Download PDF

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Publication number
WO2007035075A1
WO2007035075A1 PCT/KZ2006/000008 KZ2006000008W WO2007035075A1 WO 2007035075 A1 WO2007035075 A1 WO 2007035075A1 KZ 2006000008 W KZ2006000008 W KZ 2006000008W WO 2007035075 A1 WO2007035075 A1 WO 2007035075A1
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WO
WIPO (PCT)
Prior art keywords
fuel
channel
heating element
confuser
oxidiser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KZ2006/000008
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English (en)
Russian (ru)
Inventor
Alexandr Vladimirovich Klyuyev
Rafael Rafikovich Khizbullin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2007035075A1 publication Critical patent/WO2007035075A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
    • E21B36/02—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using burners
    • 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

Definitions

  • the invention relates primarily to the field of the oil industry, in particular, to methods for increasing the productivity of oil and bitumen wells due to gas thermal effects on the bottom hole zone of wells with the opening of natural fractures of the reservoir, increasing the mobility of viscous oil or bitumen by heating.
  • a known method for producing hydrocarbon-containing raw materials including supplying steam through the injection wells to heat the formation, and taking hydrocarbon-containing raw materials through production wells, produces steam by heating fresh water and / or mineralized produced water and / or returning steam condensate by burning contained in the feedstock of associated and / or fuel-technological gas emitted during the heat treatment of the feedstock, which is supplied for combustion at a temperature of 50 - 70 ° C at a pressure of 3.0 - 5.0 kg / cm 2 , and before combustion, the gas is heated to a temperature not lower than 100 ° C, while 15 - 40% of the gas is burned in the boiler room of the mining enterprise, and 60 - 85% is burned in the technological equipment of the mining enterprise, steam is supplied cyclically in excess, while the steam condenses by 90 - 95% and the first cycle ends when the production of hydrocarbon- containing raw materials is reduced, • hold for at least 23 hours, after which the steam supply is continued.
  • a solvent for example, kerosene and / or diesel fuel and / or methanol.
  • Water for steam production is sent for filtration to mechanical filters with a two-layer loading with quartz sand and anthracite and suspended particles are removed from the water until the water reaches a transparency of at least 40 cm, and then the clarified water is fed to the filters and the hardness salts are removed from the water to 1 - 2 mg - eq / kg and destruction of bicarbonate ion with a decrease in carbonate alkalinity to 0.7 mEq / kg, after which softened water is supplied to the self-regulating buffer filters protecting the filtrate from acid leakage, loaded with sulfonated charcoal, and then the water is sent to remove free carbon dioxide into the decarbonizer and air with carbon dioxide, which is vented to the atmosphere, and decarbonized water are separated into the tank, after which this water is pumped through two-stage filters and fed to the steam boiler room (RF patent N ° 214925
  • the gas used is a mixture of non-condensable gases generated during the combustion of liquid fuel, with the following ratio of components, wt.%: Nitrogen 15.2-19.0; carbon dioxide 4.8 - 6.0, while the gas content is 20-25 wt.%, and the mixture of steam and gas is pumped out based on
  • Qcm l, 24 ⁇ h ⁇ , where Qcm is the amount of injected gas, t; 1.24 - the coefficient of accounting for combined-cycle gas per 1 m 3 of the bottom-hole zone established by experimental work; h is the thickness of the working part of the formation, m, at a pressure of 0.2-0.8 MPa from the hydraulic fracturing pressure (RF patent J ⁇ s 2223398, class E21B 43/24, 2004).
  • the specified method is characterized by the complexity of the implementation, and the need for steam injection requires additional energy and material costs to produce steam and subsequent dehydration of the extracted raw materials.
  • Closest to the proposed invention is a method of producing hydrocarbon feedstock, comprising feeding a mixture of fuel and an oxidizing agent into a well and igniting the mixture from a downhole heating element while maintaining the oxidation reaction in a stable combustion mode of the mixture without detonating it.
  • the ratio of the oxidizing agent to the fuel in the mixture is taken from the condition of complete burnout of the fuel with maximum release, at zero oxygen balance and with the dynamics of gas evolution, characterized by a linear or close to linear dependence of the volume of gas released during combustion over time, sufficient to open natural vertical cracks in the reservoir, and produce the selection of raw materials.
  • Installation for the extraction of hydrocarbon raw materials for the implementation of this method includes a heating element located in the well for igniting a mixture of fuel and an oxidizing agent.
  • the heating element an electric heater — is installed in the well above the fuel mixture in the active phase of its operation (RF patent JNb 2235870, class E 21 43/283, 2004).
  • the objective of the invention is to develop a method for the production of hydrocarbon raw materials and installation for its implementation for gas-thermal effects on the bottom-hole zone of wells and increase the mobility of viscous oil or bitumen without the use of steam.
  • the technical result - increasing the heating efficiency of the reservoir and increasing the flow rate of oil and bitumen wells, as well as expanding technological capabilities, ensuring continuous operation of the well and increasing productivity - is achieved by the fact that in the method of producing hydrocarbon raw materials, which includes feeding a mixture of fuel and oxidizer, ignition mixtures using a heating element and the selection of raw materials according to the invention, the fuel and oxidizing agent are fed into the well through channels, while the oxidizing agent is fed under by pressure up to 1000 atm and accelerate the oxidizer flow in the confuser section of the channel to create a vacuum in the fuel channel, and then combine the outgoing fuel and oxidant flows in one zone in front of the heating element.
  • Fuel and oxidizing agent are fed by coaxial streams.
  • Associated petroleum gas is used as fuel.
  • Installation for the extraction of hydrocarbons, including a heating element located in the well, according to the invention, is equipped with fuel and oxidizer feed devices with channels having confuser sections that form the fuel and oxidizing jets located in front of the heating element.
  • the unit is equipped with a combustion chamber.
  • the confuser section of the fuel channel is located on the outside of the confuser section of the oxidizing channel.
  • the confuser section of the oxidizing channel is located on the outside of the confuser section of the fuel channel.
  • the confuser sections of the fuel and oxidation channels are located at an angle to each other.
  • the installation is equipped with additional devices for supplying fuel and an oxidizing agent.
  • the supply of the oxidizer under pressure up to 1000 atm and the acceleration of the oxidizer flow in the confluent section of the channel provides the necessary degree of rarefaction at the exit section of the oxidizer stream through the nozzle, which contributes to intensive fuel injection into the confuser section of the fuel channel and then through the fuel nozzle into the mixing zone.
  • each of the streams is ejected at a high speed into the mixing zone to form a fuel mixture.
  • the flows must converge in one limited zone (point).
  • FIG. 1 is a longitudinal section through an installation with a confuser portion of a fuel channel located on the outside of a confuser portion of an oxidizing channel
  • FIG. 2 is a longitudinal section through an installation with a confuser section of an oxidizing channel located on the outside of a confuser section of a fuel channel
  • FIG. 3 is a longitudinal section through the installation with confuser portions of the fuel and oxidation channels located at an angle to each other.
  • the hydrocarbon production unit includes a mixing device 2 located in the well 1, a heating element 3, a fuel supply device 4 and an oxidizing agent 5 with channels 6.7 having confuser sections 8.9 that form the fuel and oxidizing jets located in front of the heating element 3
  • the installation may be equipped with a combustion chamber 10.
  • the confuser section 8 of the fuel channel 6 is located on the outside of the confuser section 9 of the oxidation channel (Fig. 1).
  • the confuser section 9 of the oxidizing channel 7 can be located on the outside of the confuser section 8 of the fuel channel (Fig. 2).
  • the holes 11 are made for the exit of combustion products.
  • the installation can be equipped with additional devices for supplying fuel 12.
  • Openings 13 are made in the walls of the combustion chamber 10 to supply part of the combustion products to the afterburner 10.
  • the installation has additional openings 14 for the exit of combustion products.
  • additional device 15 for feeding the oxidizing agent.
  • the installation has an additional channel 16 for supplying air or another oxidizing agent from the outside of the combustion chamber 10 to cool its walls, in which openings 17 are made for introducing the oxidizing agent into the combustion chamber. This allows you to simultaneously eliminate the overheating of the walls of the combustion chamber 10 and to intensify the process of burning fuel to achieve a higher temperature of the combustion products.
  • Example 1 Gaseous fuel is supplied by means of device 4 and an oxidizing agent, for example, air, by means of device 5, respectively, through fuel 6 and oxidizing channels 7 to mixing device 2 to form a fuel-air mixture, which is supplied to combustion chamber 10 and ignited by a heating element 3, for example, electric arc.
  • the air is supplied at a pressure of 10 atm and the flow is accelerated in the confuser section 9. This ensures the necessary degree of rarefaction at the exit section of the air stream from the confuser part 9, which forms an oxidizing nozzle at the outlet end, which contributes to intensive fuel injection into the confuser section 8 of the fuel channel and then through the calibrated hole at the end of the section 8, forming the fuel nozzle, into the mixing device 2.
  • the intermole is weakened hydrocarbon fuel Yarnykh connections and ensures complete combustion.
  • Mixing air with fuel is carried out by combining the outgoing flows of fuel and air in one zone in front of the heating element 3.
  • the fuel consumption is controlled by a valve (not shown) in such a way as to ensure its optimum ratio with air.
  • Fuel consumption control can be carried out automatically using a control device (not shown), which is associated with a gas analyzer installed in the outlet 11 for combustion products.
  • Part of the exhaust combustion products can be fed into the combustion chamber for afterburning through the holes 13.
  • the air supplied to the channel 7 can be heated to the required temperature, for example 100 ° C or higher, in this case, with an additional supply of liquid fuel, it evaporates and the formed fuel mixture enters the combustion chamber 10 in a gaseous state, which increases the completeness of combustion and efficiency installation .
  • an additional device for supplying fuel 12 can be installed.
  • longitudinal partitions (not shown) can be installed so that from each of the devices 4 and 12, the fuel flow was transported through the respective sector prior to mixing. This increases the versatility of the installation and does not require re-equipment in the transition from one type of fuel to another.
  • an oxidizing agent When burning solid fuel or fuel containing heavy hydrocarbons, an oxidizing agent is additionally supplied using device 15; oxygen, ozone, ozone-air mixture or air are used as an oxidizing agent. Hot gases reaching temperatures up to 2000 ° C, leaving the holes And, warm the bottom-hole zone of the well, resulting in the opening of natural fractures of the reservoir and increases the mobility of viscous oil or bitumen. In addition, the components of the combustion products interact with the molecules of viscous oil or bitumen, reducing their viscosity. The selection of raw materials is carried out in the traditional way. As a result of heating the raw material and the interaction of its molecules with hot products of combustion, the well production rate increases by 10 - 50%. Example 2.
  • liquid, gaseous or ground solid fuel is supplied by means of device 4 and air by means of device 5, for example, compressor, respectively through fuel channel and oxidizing channel 7, while the confuser section 9 of the oxidizing channel is located on the outside of the confuser section 8 of the fuel channel.
  • Fuel and air are directed into the mixing device 2 by coaxial flows, the air is supplied at a pressure of 100 atm and the air stream is accelerated in the confuser section 9 of the oxidizing channel 7.
  • the air stream exits through the nozzle of the confuser section 9
  • fuel leaving the fuel nozzle is injected at high speed.
  • the air is heated from 50 to 1000 0 C.
  • the gases formed as a result of the combustion of the fuel-air mixture are discharged through openings 11 into the bottomhole zone of the well, while they heat up the viscous feedstock and reduce its fluidity, which leads to an increase in the flow rate of the well.
  • air or another oxidizing agent is additionally supplied to the zone located on the outside of the combustion chamber 10.
  • the air supplied through the channel 16 cools the walls of the chamber 10 from the outside and enters the chamber through openings 17 , intensifying the process of burning fuel to achieve a higher temperature of the combustion products.
  • Refractory alloys or cermets are used for the manufacture of plant units operating in high temperature conditions.
  • An advantage of the invention is its versatility, since the installation and the implementation of the method in any type of well are provided - horizontal, deviated, vertical. Eliminating the need for steam supply reduces the energy intensity of production and ensures high quality of the extracted raw materials, since the saturation of raw materials with water, which subsequently must be removed, is excluded. Due to the high temperature of the combustion products and their interaction with the molecules of the raw material, the decomposition of heavy hydrocarbon and paraffin molecules in the well occurs and the viscosity of heavy high-paraffin oils decreases, which facilitates their transportation through the pipeline without additional heating, without the deposition of paraffin on the walls of the well and the pipeline. Ensuring continuous operation of the well simplifies its operation and improves productivity.

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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)

Abstract

L'invention appartient au domaine de l'industrie pétrolière et concerne notamment des procédés pour augmenter la productivité des puits de bitume ou de pétrole grâce au traitement gazothérmique appliqué à la zone adjacente au fond de puits, avec l'ouverture des fissures naturelles de la couche productrice et grâce à l'augmentation de la mobilité du pétrole visqueux ou du bitume par réchauffement. Selon l'invention, on alimente le puits avec un mélange de carburant et d'oxydant, on allume le mélange au moyen d'un élément chauffant et on évacue les matières premières. Selon l'invention, le carburant et l'oxydant sont alimentés dans le puits à travers des canaux, l'oxydant étant alimenté à une pression jusqu'à 1000 atm, et l'accélération de son mouvement se fait dans la partie concentrateur du canal, de manière à créer une détente dans le canal de carburant. On joint ensuite les flux de carburant et les flux d'oxydant sortants dans une zone en amont de l'élément chauffant. L'installation comprend un élément chauffant et des dispositifs d'alimentation de carburant et d'oxydant avec des canaux comportant des parties concentrateur, qui forment des gicleurs pour carburant et pour oxydant, disposés en amont de l'élément chauffant. Ce procédé assure une meilleure efficacité de réchauffement de la couche productrice et un débit plus important des puits de bitume ou de pétrole.
PCT/KZ2006/000008 2005-09-19 2006-09-15 Procede d'extraction de matiere premiere d'hydrocarbures et installation destinee a sa mise en oeuvre Ceased WO2007035075A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KZ20051100 2005-09-19
KZ051100.1 2005-09-19

Publications (1)

Publication Number Publication Date
WO2007035075A1 true WO2007035075A1 (fr) 2007-03-29

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ID=37889078

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Application Number Title Priority Date Filing Date
PCT/KZ2006/000008 Ceased WO2007035075A1 (fr) 2005-09-19 2006-09-15 Procede d'extraction de matiere premiere d'hydrocarbures et installation destinee a sa mise en oeuvre

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU20243A1 (ru) * 1930-03-31 1931-04-30 Н.Н. Богоявленский Горелка дл сжигани нефти
SU143537A1 (ru) * 1961-05-10 1961-11-30 Ю.П. Соснин Устройство дл подогрева воды и одновременного получени пара
SU1627563A1 (ru) * 1989-03-09 1991-02-15 Научно-исследовательский институт металлургии Способ выплавки стали в конвертере
RU2062401C1 (ru) * 1994-02-09 1996-06-20 Карташов Валентин Павлович Огнеструйная горелка
RU2235870C1 (ru) * 2003-10-14 2004-09-10 Закрытое акционерное общество "НТЦ ГеотехноКИН" Способ повышения продуктивности скважины

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU20243A1 (ru) * 1930-03-31 1931-04-30 Н.Н. Богоявленский Горелка дл сжигани нефти
SU143537A1 (ru) * 1961-05-10 1961-11-30 Ю.П. Соснин Устройство дл подогрева воды и одновременного получени пара
SU1627563A1 (ru) * 1989-03-09 1991-02-15 Научно-исследовательский институт металлургии Способ выплавки стали в конвертере
RU2062401C1 (ru) * 1994-02-09 1996-06-20 Карташов Валентин Павлович Огнеструйная горелка
RU2235870C1 (ru) * 2003-10-14 2004-09-10 Закрытое акционерное общество "НТЦ ГеотехноКИН" Способ повышения продуктивности скважины

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