WO2017099225A1 - Réducteur de viscosité de pétrole lourd, procédé d'abaissement de la viscosité de pétrole lourd, et procédé de récupération de pétrole lourd - Google Patents

Réducteur de viscosité de pétrole lourd, procédé d'abaissement de la viscosité de pétrole lourd, et procédé de récupération de pétrole lourd Download PDF

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Publication number
WO2017099225A1
WO2017099225A1 PCT/JP2016/086752 JP2016086752W WO2017099225A1 WO 2017099225 A1 WO2017099225 A1 WO 2017099225A1 JP 2016086752 W JP2016086752 W JP 2016086752W WO 2017099225 A1 WO2017099225 A1 WO 2017099225A1
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Prior art keywords
heavy oil
group
viscosity
carbon atoms
agent
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PCT/JP2016/086752
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English (en)
Japanese (ja)
Inventor
健夫 ▲高▼橋
慎弥 高橋
睦 金子
良太 黒須
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株式会社クレハ
日本乳化剤株式会社
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Publication of WO2017099225A1 publication Critical patent/WO2017099225A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants

Definitions

  • the present invention relates to a thickening agent for heavy oil, a method for reducing the viscosity of heavy oil, and a method for recovering heavy oil.
  • Heavy oil such as bitumen is considered to have several times the initial reserves of ordinary light medium oil and is being developed to meet future crude oil demand. Since heavy oil has a higher viscosity than light medium oil, it cannot be recovered from the formation by conventional methods such as self-injection or pumping by well drilling, so a sandstone layer containing heavy oil (both oil sand and tar sand) Retrieval by the open-pit mining method (called) or direct recovery from the formation by the in-situ method.
  • Recovery by open pit mining is performed, for example, by the following process. That is, a relatively shallow formation containing heavy oil is cut and oil sand is mined. Heavy oil is recovered through a step of separating heavy oil-containing components and solid sand, and a step of separating heavy oil and moisture.
  • an enhanced recovery method a method of reducing the viscosity of heavy oil using steam is known.For example, two vertical wells are drilled, steam is injected from one of them, and heated with steam to form a formation.
  • Surfactants may be used to reduce the viscosity of the heavy oil.
  • Such surfactants are disclosed in, for example, Patent Documents 1 to 3.
  • Patent Document 4 discloses an emulsion comprising three components of heavy oil, surfactant and water.
  • the viscosity of heavy oil when the viscosity of heavy oil is reduced by emulsification, particularly when used for extraction of heavy oil, it is necessary to easily and quickly emulsify the heavy oil that is the object of emulsification within the formation. That is, although it is difficult to stir and mix using a special emulsifier in the formation, it is necessary to emulsify even under such conditions. Furthermore, when reducing the viscosity of heavy oil by emulsification, the reduced viscosity state of the heavy oil may not be maintained for a long time. That is, even when the viscosity of the heavy oil is lowered, the lowered viscosity may be released after a long time.
  • the present invention has been made in view of such problems, and it is an object of the present invention to provide a heavy oil low-viscosity agent having excellent stability over time.
  • the present inventor has found that a low viscosity state of heavy oil can be maintained for a long time by using a specific compound, and has arrived at the present invention.
  • the heavy oil low viscosity agent according to the present invention has the following formula (1):
  • R 1 is an aryl group having 6 to 20 carbon atoms
  • R 2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
  • R 3 is a branched or straight chain having 2 to 4 carbon atoms.
  • An alkylene group, and R 4 is a CH 2 COO group, SO 3 group, CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, or PO
  • M is ammonium, alkanolamine, alkylamine or alkali metal
  • a is an integer of 1 to 3
  • each of a plurality of R 1 may be the same or different.
  • b is an integer of 0 to 100
  • the method for reducing the viscosity of heavy oil according to the present invention comprises diluting a heavy oil, a heavy oil, and a heavy oil reducing agent containing the compound represented by the above formula (1). Including a mixing step of mixing with a diluent.
  • the heavy oil recovery method comprises mixing the compound represented by the above formula (1) with a diluent for diluting the heavy oil, thereby reducing the viscosity of the heavy oil. Including a preparation step for preparing the heavy oil, an injection step for injecting the heavy oil lowering agent into the formation containing the heavy oil, and a recovery step for recovering the reduced heavy oil.
  • the heavy oil recovery method according to the present invention is a method for recovering heavy oil from oil sand, which comprises a compound represented by the above formula (1) and a diluent for diluting the heavy oil. And a preparation step for preparing a heavy oil low viscosity agent by mixing, and an injection for injecting the heavy oil low viscosity agent into a mixer for contact with an oil sand containing heavy oil And a recovery step of recovering the heavy oil whose viscosity has been reduced.
  • the viscosity reducing agent for heavy oil according to the present invention is used, there is an effect that the heavy oil can be easily and quickly emulsified. Moreover, according to the method for reducing the viscosity of heavy oil according to the present invention, the effect of reducing the viscosity of the heavy oil can be maintained for a long time.
  • the heavy oil viscosity reducing agent according to one embodiment of the present invention is represented by the following formula (1):
  • R 1 is an aryl group having 6 to 20 carbon atoms
  • R 2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
  • R 3 is a branched or straight chain having 2 to 4 carbon atoms.
  • An alkylene group, and R 4 is a CH 2 COO group, SO 3 group, CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, or PO
  • M is ammonium, alkanolamine, alkylamine or alkali metal
  • a is an integer of 1 to 3
  • each of a plurality of R 1 may be the same or different.
  • b is an integer of 0 to 100).
  • R 1 examples include —C—C—C—Ph—C, —C—C—C—Ph, —Ph, and —Ph—Ph (Ph represents a benzene ring, and In these structural formulas, hydrogen atoms are omitted).
  • R 2 examples include a hydrogen atom, a methyl group, an ethyl group, and a propyl group.
  • R 3 examples include branched or straight-chain alkylene such as ethylene, propylene and butylene.
  • R 4 is a CH 2 COO group, SO 3 group, CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, or PO 3 group.
  • ammonium, alkanolamine and alkylamine examples include those represented by the following formula (2).
  • R 5 R 6 R 7 N (2) (Wherein R 5 , R 6 and R 7 are each independently or independently of each other, hydrogen, a linear or branched alkyl group having 1 to 8 carbon atoms, or a straight chain having 2 to 4 carbon atoms. Or a branched hydroxyalkyl group.)
  • alkanolamine examples include monoethanolamine, diethanolamine, and triethanolamine.
  • alkylamine examples include monoethylamine, diethylamine and triethylamine.
  • alkali metal examples include Li, Na and K.
  • Examples of the compound represented by the above formula (1) include polyoxyalkylene polycyclic phenyl ether sulfate triethanolamine salts, polyoxyalkylene polycyclic phenyl ether sulfate alkanolamine salts, and polyoxyethylene polycyclic phenyl. And polyoxyalkylene polycyclic phenyl ether phosphate alkanolamine salts such as ether phosphate triethanolamine salts.
  • polycyclic phenyl examples include styrenated phenyl, styrenated cresyl and cumylphenyl.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention may be a formalin condensate (for example, a bisphenol F derivative) of the compound represented by the above formula (1).
  • the heavy oil viscosity reducing agent according to one embodiment of the present invention may contain an additive in addition to the compound represented by the above formula (1).
  • the additive include a diluent for diluting heavy oil, an antifoaming agent (silicon-based, alcohol-based), and an emulsifying aid.
  • the diluent include water capable of diluting heavy oil, light oil and alcohol.
  • the diluent is preferably water because it is inexpensive and easily available.
  • One or more diluents may be contained in the heavy oil viscosity reducing agent according to an embodiment of the present invention.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention includes a diluent
  • the content of the diluent in the total weight of the heavy oil viscosity reducing agent is not particularly limited, On the other hand, 10 weight% or more is preferable and 15 weight% or more is more preferable. Moreover, 40 weight% or less is preferable, 30 weight% or less is more preferable, and 20 weight% or less is further more preferable. Further, without diluting to this preferred concentration, the compound of the above formula (1) may be used at a higher concentration and diluted to a preferred amount when used.
  • the heavy oil can be easily and rapidly emulsified.
  • the heavy oils that are the subject of one embodiment of the present invention are generally classified as bitumen if the viscosity measured at the oil phase temperature exceeds 10,000 cP, and as crude if the viscosity is 10,000 cP or less.
  • crude oil is further classified according to API specific gravity, and those exceeding 20 ° API are classified as medium light oil.
  • the heavy oil includes the bitumen and the crude oil described above that are 20 ° API or less.
  • a method for reducing the viscosity of a heavy oil according to an embodiment of the present invention includes a heavy oil reducing agent for heavy oil according to an embodiment of the present invention, a heavy oil, and a method for diluting the heavy oil.
  • the heavy oil viscosity reducing agent according to one embodiment of the present invention the heavy oil, and the above-described diluent for diluting the heavy oil may be mixed.
  • the mixing method in the mixing step is not particularly limited.
  • the heavy oil is either the dispersion medium or the dispersoid
  • the other dispersoid or dispersion medium and the heavy oil and the above formula (1) are used.
  • the compound represented by the above may be stirred and mixed in a container or the like.
  • the amount of the thickening agent for heavy oil to be used may be appropriately set according to the viscosity of the intended heavy oil, but is 0.1% by weight or more based on the entire heavy oil. Is preferable, and 0.2% by weight or more is more preferable. Moreover, 10 weight% or less is preferable and 5 weight% or less is more preferable.
  • the amount of the diluent to be used may be appropriately set according to the viscosity of the intended heavy oil, but is preferably 10% by weight or more, and 15% by weight or more based on the whole heavy oil. More preferred. Moreover, 40 weight% or less is preferable, 30 weight% or less is more preferable, and 20 weight% or less is further more preferable. If it is 10 weight% or more, a viscosity can be made low enough and it can emulsify easily. Further, by making the amount as small as 40% by weight or less, it is possible to make the pipeline difficult to rust when, for example, the heavy oil whose viscosity has been reduced is recovered through the pipeline, for example.
  • the mixing temperature is preferably 0 ° C. or higher and 100 ° C. or lower. If it is the temperature of this range, heavy oil can be emulsified efficiently.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention since the heavy oil viscosity reducing agent according to an embodiment of the present invention is used, the heavy oil can be easily and rapidly emulsified.
  • mixing may be performed using a conventionally known mixing device or the like, and devices such as a homomixer and a homogenizer having a particularly high shearing force are not required.
  • the viscosity of the emulsified heavy oil obtained by the mixing step is preferably 5000 cP or less, and more preferably 1000 cP or less. If the viscosity is 5000 cP or less, the viscosity of the emulsified heavy oil is sufficiently low. For example, in the subsequent heavy oil recovery step, it becomes easy to recover the heavy oil.
  • the pH is preferably 8 or more and 10 or less.
  • the heavy oil recovery method according to one embodiment of the present invention uses the heavy oil low viscosity agent according to one embodiment of the present invention. Specifically, the preparation step, the injection step, And a recovery step. Hereinafter, each step will be described.
  • the low viscosity for heavy oil according to an embodiment of the present invention is obtained by mixing the compound represented by the above formula (1) and the diluent for diluting the heavy oil described above. An agent is prepared.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention is injected into a formation containing heavy oil or oil sand obtained by open pit mining.
  • An example of the strata is an underground stratum.
  • the injection method, injection rate, etc. of the heavy oil low viscosity agent are not particularly limited, and may be set as appropriate according to the type of formation, the environment at the time of injection, etc. .
  • a method of injecting only the low viscosity agent into the formation, or a method of combining the low viscosity agent and the steam attack method injecting the water vapor after injecting the low viscosity agent first, injecting the water vapor A method of injecting a low viscosity agent later, a method of simultaneously injecting a low viscosity agent and water vapor, or a method combined with a CSS method, in which water vapor is injected after injecting the low viscosity agent first, water vapor A method of injecting a low-viscosity agent after injecting, a method of injecting a low-viscosity agent and water vapor at the same time, or a method in combination with the SAGD method, injecting water vapor after
  • the heavy oil whose viscosity has been reduced is recovered.
  • the recovery method is not particularly limited, and may be set as appropriate according to the type of heavy oil and formation. For example, a process of recovering heavy oil whose viscosity has been reduced by injecting only the low viscosity agent into the formation, a method combining the low viscosity agent and the steam attack method, after the low viscosity agent has been injected first A method of recovering heavy oil whose viscosity has been reduced by injecting water vapor, a method of recovering heavy oil whose viscosity has been reduced by injecting a low viscosity agent after injecting water vapor, A method of recovering heavy oil that has been reduced in pressure by pressing, or a method that is combined with the CSS method, and that recovers heavy oil that has been reduced in viscosity by injecting steam after injecting the viscosity-increasing agent first.
  • a method of recovering heavy oil whose viscosity has been reduced by injecting a low viscosity agent after injecting water vapor a method of recovering heavy oil having a low viscosity by simultaneously injecting a low viscosity agent and water vapor Or in combination with the SAGD method, after first injecting a low viscosity agent
  • a method of recovering heavy oil whose viscosity has been reduced by injecting water vapor into it a method of recovering heavy oil whose viscosity has been reduced by injecting a low viscosity agent after injecting water vapor
  • a method of recovering heavy oil whose pressure has been reduced by press-fitting at the same time can be mentioned.
  • the viscosity was lowered by injecting only the above-mentioned viscosity reducing agent, or the above viscosity reducing agent and warm water, or the viscosity reducing agent and water vapor.
  • the reduced viscosity state of heavy oil is stably maintained over a long period of time, so that heavy oil can be recovered efficiently.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention is not only for recovering heavy oil from the formation, but also for extracting heavy oil from, for example, oil sand collected during open pit mining. It can be applied to various processes such as heavy oil recovery, extraction and transportation.
  • the heavy oil viscosity reducing agent according to an embodiment of the present invention can be applied to a method for recovering heavy oil from oil sand.
  • the heavy oil is recovered from the oil sand by mixing the compound represented by the above formula (1) with a diluent for diluting the heavy oil to reduce the viscosity for heavy oil.
  • a preparation step for preparing the agent an injection step for injecting the heavy oil low-viscosity agent into the mixer in order to contact the oil sand containing the heavy oil, and a low-viscosity heavy oil
  • a recovery step for recovery for recovery.
  • R 1 is an aryl group having 6 to 20 carbon atoms
  • R 2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
  • R 3 is a branched or straight chain having 2 to 4 carbon atoms.
  • An alkylene group, and R 4 is a CH 2 COO group, SO 3 group, CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, CH 2 CH 2 CH 2 SO 3 group, or PO
  • M is ammonium, alkanolamine, alkylamine or alkali metal
  • a is an integer of 1 to 3
  • each of a plurality of R 1 may be the same or different.
  • b is an integer of 0 to 100
  • the heavy oil viscosity reducing agent according to the present embodiment preferably includes a diluent for diluting the heavy oil, and the diluent is preferably water.
  • the method for reducing the viscosity of heavy oil according to the present embodiment includes a heavy oil reducing agent containing the compound represented by the above formula (1), heavy oil, and diluting the heavy oil.
  • the heavy oil recovery method according to the present embodiment is a method for reducing the viscosity of heavy oil by mixing the compound represented by the above formula (1) and a diluent for diluting the heavy oil.
  • the heavy oil recovery method is a method for recovering heavy oil from oil sand, and is a dilution for diluting the heavy oil and the compound represented by the above formula (1). And a preparation step for preparing a heavy oil lowering agent by mixing with an agent, and injecting the heavy oil lowering agent into a mixer for contact with an oil sand containing heavy oil An injection process and a recovery process for recovering the heavy oil whose viscosity has been reduced.
  • Bitumen heated in a 70 ° C. water bath, hard water, and emulsifiers shown in Table 1 were added to a 100 mL death cup. Next, using a three-one motor (300 rpm, propeller-type stirring blade), each raw material in the death cup was stirred for 5 minutes at room temperature (25 ° C.).
  • Table 2 shows the basic and practical formulations of bitumen, hard water, and each emulsifier.
  • the emulsifiability of the mixture after stirring is “ ⁇ ” if the bitumen and hard water are uniformly reduced in viscosity, and the emulsifiability is obtained if the bitumen and hard water are unevenly reduced in viscosity. If “ ⁇ ”, bitumen and hard water were non-uniform and highly viscous, the emulsifiability was evaluated as “x”. The results are shown in Table 1.

Abstract

La présente invention concerne un réducteur de viscosité de pétrole lourd, un procédé permettant d'abaisser la viscosité de pétrole lourd, et un procédé de récupération de pétrole lourd. Le réducteur de viscosité de pétrole lourd contient un composé représenté par la formule (1). (Dans la formule, R1 est un groupe aryle de 6 à 20 atomes de carbone, R2 est un atome d'hydrogène ou un groupe alkyle de 1 à 3 atomes de carbone, R3 est un groupe alkylène ramifié ou linéaire de 2 à 4 atomes de carbone, R4 est un groupe CH2COO, un groupe SO3, un groupe CH2CH2SO3, un groupe CH2CH2CH2SO3, un groupe CH2CH2CH2CH2SO3 ou un groupe PO3, M est un ammonium, une alcanolamine, une alkylamine ou un métal alcalin, a est un nombre entier de 1 à 3, et lorsque a vaut 2 ou 3, les multiples R1 peuvent être identiques ou différents, et b est un nombre entier de 0 à 100).
PCT/JP2016/086752 2015-12-10 2016-12-09 Réducteur de viscosité de pétrole lourd, procédé d'abaissement de la viscosité de pétrole lourd, et procédé de récupération de pétrole lourd WO2017099225A1 (fr)

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JP2015-241632 2015-12-10
JP2015241632A JP2017105946A (ja) 2015-12-10 2015-12-10 重質油用低粘度化剤、重質油の低粘度化方法、及び重質油の回収方法

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842776A (en) * 1986-10-24 1989-06-27 Hoechst Aktiengesellschaft Styrylaryloxy ether sulfonates, a process for their preparation and their use in the recovery of crude oil
US20110028355A1 (en) * 2009-07-29 2011-02-03 Oil Chem Technologies Non-estrogenic alkylphenol derivatives
WO2011094442A1 (fr) * 2010-01-28 2011-08-04 Board Of Regents, The University Of Texas System Sulfate d'alcoxylate de styrylphénol en tant que nouvelle composition de tensioactif pour des applications d'extraction d'huile améliorée
WO2014153102A1 (fr) * 2013-03-14 2014-09-25 Cesi Chemical Inc. Procédés et compositions en vue d'une utilisation dans des puits de pétrole et/ou de gaz
CN104449639A (zh) * 2014-11-10 2015-03-25 中国石油化工股份有限公司 一种稠油热采乳化降粘剂、制备方法及应用

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842776A (en) * 1986-10-24 1989-06-27 Hoechst Aktiengesellschaft Styrylaryloxy ether sulfonates, a process for their preparation and their use in the recovery of crude oil
US20110028355A1 (en) * 2009-07-29 2011-02-03 Oil Chem Technologies Non-estrogenic alkylphenol derivatives
WO2011094442A1 (fr) * 2010-01-28 2011-08-04 Board Of Regents, The University Of Texas System Sulfate d'alcoxylate de styrylphénol en tant que nouvelle composition de tensioactif pour des applications d'extraction d'huile améliorée
WO2014153102A1 (fr) * 2013-03-14 2014-09-25 Cesi Chemical Inc. Procédés et compositions en vue d'une utilisation dans des puits de pétrole et/ou de gaz
CN104449639A (zh) * 2014-11-10 2015-03-25 中国石油化工股份有限公司 一种稠油热采乳化降粘剂、制备方法及应用

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