CN101423754B - Composite catalytic viscosity reducer for steam injection to thickened oil and preparation method and use thereof - Google Patents
Composite catalytic viscosity reducer for steam injection to thickened oil and preparation method and use thereof Download PDFInfo
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- CN101423754B CN101423754B CN2007101898801A CN200710189880A CN101423754B CN 101423754 B CN101423754 B CN 101423754B CN 2007101898801 A CN2007101898801 A CN 2007101898801A CN 200710189880 A CN200710189880 A CN 200710189880A CN 101423754 B CN101423754 B CN 101423754B
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Abstract
The invention relates to a composite catalytic viscosity reducer for thick oil steam injection production, as well as a preparation method and application thereof. The viscosity reducer is formed by combining three slugs, wherein a slug I comprises the following components in weight percentage content: 1 to 2 percent of cumene hydroperoxide, 1 to 3 percent of manganese oleate, 0.2 to 0.5 percent of sodium dihydrogen phosphate, 0.1 to 0.5 percent of alkaline matter and the balance being water; a slug II comprises the following components in weight percentage content: 0.05 to 0.1 percent of hydrothermal cracking catalysts, 0.05 to 0.2 percent of alkaline matter and the balance being water; and a slug III comprises the following components in weight percentage content: 0.1 to 0.5 percent of surfactant, 0.1 to 0.3 percent of alkaline matter and the balance being water. The composite viscosity reducer formed by combining three viscosity reducers has the advantages of good viscosity reducing effect, as well as wider adaptive range and better effects during field application through combination. Experiments prove that the composite viscosity reducer can reduce the viscosity of crude oil from 309,028 mPa.s to 55 mPa.s within 24 hours at a temperature between 100 and 200 DEG C, and reaches the viscosity reducing rate of over 99.9 percent.
Description
Technical field
The present invention relates to a kind of heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for, simultaneously, also relate to a kind of this and be used for the preparation method of heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, belong to the oil production chemical field.
Background technology
Viscous oil recovery generally adopts steam treatment to handle up or the method for steam flood, though adopt the method for injecting thermal medium can reduce viscosity of crude, is beneficial to the exploitation of viscous crude, annotates behind the vapour through the short period of time exploitation, and formation temperature descends greatly, and viscosity of thickened oil can increase once more; Therefore, in order further to improve the flow capacity of crude oil on the stratum, usually need to add methods such as promoting agent crude oil is carried out viscosity reduction, to prolong the thermal recovery cycle, yet this kind mode is for super viscous crude and special super viscous crude, because its viscosity is high especially, only relies on steam treatment or in steam, add method such as promoting agent and can not meet the needs of production.
Have a mind to add in predetermined substance and the viscous crude research that some component generation chemical reaction reduces viscosity of thickened oil and more and more come into one's own for going into well steam in recent years.But crack crude temperature routinely generally will be more than 300 ℃, and steam thermal recovery well temperature (about 200 ℃) is difficult to reach this temperature.
Abroad just carry out the research of this respect since the initial stage eighties, be at first people such as Canadian Hnye research and development do the underground water thermo-cracking viscous crude technology that catalyzer carries out with transition metal salt, this technology utilizes transition metal salt to make catalyzer, studied the possibility that hydrothermal cracking takes place in great detail from thermodynamics and reaction kinetics angle the stratum, its moiety by viscous crude has been described the reaction mechanism of hydrothermal cracking; By the heavy ingredient (gum asphalt) that makes crude oil under 240 ℃ steam injecting temperature condition scission reaction taking place, cause-fracture of C-S-key, generate light component, reduces the result of viscosity of crude.Proved all on principle and the experiment that the thick oil hydrothermal cracked takes place.
It is domestic that to begin to carry out with the hydrothermal cracking from the nineties be the main research of the underground upgrading of viscous crude of carrying out, by adding transition metal salt catalyzer, carried out reducing thick oil viscosity, generated the gas comparison, the viscous crude ratio of components, the comparison of viscous crude component etc., study the effect behind the catalyst action in great detail and obtained certain effect, but hydro-thermal hydrogenation or hydrogen donor hydrogen supply all need the temperature more than 240 ℃, but it is less that notes vapour condition sub-surface reaches the scope of this temperature, cause the catalyst action radius little, with short production cycle, this is the greatest factor of restriction underground catalytic viscosity reduction; In addition, catalytic viscosity reduction generally all is applied to special super viscous crude, and special super viscous crude molecule is big, viscosity is high, even it is mobile all relative with dispersiveness relatively poor under the steam heating condition, because special super viscous crude dispersion is inhomogeneous, catalyzer is difficult to and the crude oil thorough mixing, causes catalyst action effectively not bring into play after the catalyzer that injects enters the stratum, this has also caused the viscosity reduction scope little, and it is fast that viscosity of crude recovers.
Summary of the invention
The object of the present invention is to provide a kind of heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for, viscous crude is carried out cracking, reduces the viscosity of viscous crude efficiently can annotate on the stratum under the condition of vapour.
Simultaneously, the object of the present invention is to provide a kind of preparation method who is used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent.
In addition, the present invention also aims to provide a kind of this to be used for the application of heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent.
To achieve these goals, technical scheme of the present invention has adopted a kind of heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for, be used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, combine by three slugs, wherein, slug one comprises following components in weight percentage content: hydrogen phosphide cumene 1-2%, manganese oleate 1-3%, SODIUM PHOSPHATE, MONOBASIC 0.2-0.5%, alkaline matter 0.1-0.5%, and all the other are water; Slug two comprises following components in weight percentage content: hydrothermal cracking and catalyzing agent 0.05-0.1%, alkaline matter 0.05-0.2%, and all the other are water; Slug three comprises following components in weight percentage content: tensio-active agent 0.1-0.5%, and alkaline matter 0.1-0.3%, all the other are water.
Described alkaline matter is sodium hydroxide, potassium hydroxide or its mixture.
Described hydrothermal cracking and catalyzing agent is a salicylic aldehyde amine.
Described tensio-active agent is the lignin amphoterics.
Described salicylic aldehyde amine is that feedstock production forms by salicylic aldehyde, Ursol D and dehydrated alcohol, and wherein, the weight percentage of each component is salicylic aldehyde 9.2-10.2%, Ursol D 4.1-5.1%, dehydrated alcohol 84.7-86.7%.
The preparation method of described salicylic aldehyde amine is: with salicylic aldehyde, Ursol D, dehydrated alcohol stirring reaction 2-4 hour at normal temperatures, suction filtration gained orange solids was salicylic aldehyde amine.
Simultaneously, technical scheme of the present invention also provides a kind of preparation method who is used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, may further comprise the steps,
Slug one:
(1) the dissolving hydrogen phosphide cumene stirred 1-2 hour;
(2) under 0-40 ℃ temperature, add manganese oleate, SODIUM PHOSPHATE, MONOBASIC mixing stirring 1-2 hour;
(3) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture, the solution with step (2) gained mixes then, stirs 1-2 hour;
Slug two:
(1) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture;
(2) under 0-40 ℃ temperature, add salicylic aldehyde amine and mix stirring 1-2 hour;
Slug three:
(1) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture;
(2) under 0-40 ℃ temperature, add tensio-active agent and mix stirring 1-2 hour.
In addition, technical scheme of the present invention also provides a kind of application that is used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, the viscosity-depression agent of slug one is to be injected into the stratum before steam treatment, the viscosity-depression agent of slug two is to inject the stratum in the process of steam treatment, the viscosity-depression agent of slug three be before steam treatment or the process of steam treatment in inject the stratum.
Slug one is to be that feedstock production has become oxidative thinner with hydrogen phosphide cumene, manganese oleate, SODIUM PHOSPHATE, MONOBASIC, alkaline matter and water among the present invention, slug two is to be that feedstock production has become the reducing viscosity in hydrothermal cracking and catalyzing agent with salicylic aldehyde amine and alkaline matter and water, and slug three is to be that feedstock production has become active viscosity-depression agent with tensio-active agent and alkaline matter and water.Wherein, colloid, the bituminous matter of oxidative thinner in can the oxidation viscous crude reduces viscosity of crude thereby change the viscous crude structure by chain rupture, simultaneous oxidation generates acidic substance, by adding alkaline matter, make it become material with Action of Surfactant, also play the viscosity reduction effect; The reducing viscosity in hydrothermal cracking and catalyzing agent mainly is under catalyst action, utilize the decomposition (the hydrogen supply effect is arranged) of the water in the crude oil, play the effect of hydro-upgrading, can take off heavy constituent such as containing S, N in the viscous crude like this, produce some little molecules, promptly reduce heavy constituent content, increase light constituent content, thereby play the effect of permanent reduction viscosity of crude; Active viscosity-depression agent mainly is to reduce surface tension, forms o emulsion, thereby reduces viscosity of crude.Three kinds of viscosity-depression agents of the present invention are combined formed combination viscosity-depression agent, and not only viscosity reducing effect is good, and by combination, the scope of adaptation is more extensive, better effects if when using at the scene.Through experiment, combination viscosity-depression agent of the present invention can drop to 55mPa.s from 309028mPa.s with viscosity of crude in 24 hours under 100-200 ℃ temperature, and viscosity break ratio reaches more than 99.9%.The present invention effectively reduces temperature of reaction by the effective assembly with viscosity-depression agent, has enlarged the catalyst action scope, make viscosity reducing effect further improve, the temperature range that is suitable for further enlarges, and has fine social value and economic worth, has good popularizing application prospect.
During use, three kinds of viscosity-depression agents of the present invention can divide slug to inject, and wherein, active viscosity-depression agent can anti-300 ℃ high temperature, and it can play the viscosity reduction effect under reservoir temperature, but the effect of this kind viscosity reduction is a reducing viscosity by emulsifying, and material viscosity recovers easily; Scission reaction can take place in oxidative thinner under 100-120 ℃ temperature, it can solve the stratum and annotate the low problem of temperature behind the vapour, but can not at high temperature inject; Reducing viscosity in hydrothermal cracking and catalyzing agent viscosity reducing effect is good, plays the effect of hydro-upgrading, but therefore temperature of reaction need, need the stratum that higher temperature is arranged at 200 ℃; These three kinds of viscosity-depression agents are used in combination, can remedy mutually, viscosity reducing effect is fine, and the scope of adaptation is also very wide.
Embodiment
Embodiment 1
In the present embodiment, take by weighing 2g hydrogen phosphide cumene, 2g manganese oleate, 0.5g SODIUM PHOSPHATE, MONOBASIC, join respectively in the high-temperature high-pressure reaction kettle that 70g viscous crude and 30g water are housed, be warming up to 100 ℃ after the sealing, constant temperature 16 hours, slowly reduce the temperature to room temperature, add 0.1g sodium hydroxide, 0.2g promoting agent and 0.1g salicylic aldehyde amine, be warming up to 200 ℃ after resealing, constant temperature 24 hours, slowly reduce the temperature to room temperature, pour out crude oil, survey viscosity of crude.Recording its viscosity break ratio is 99.9%.
The salicylic aldehyde amine of present embodiment is that feedstock production forms by salicylic aldehyde, Ursol D and dehydrated alcohol, and wherein, the weight percentage of each component is a salicylic aldehyde 9.2%, Ursol D 4.1%, dehydrated alcohol 86.7%.
The preparation method of salicylic aldehyde amine is: with salicylic aldehyde, Ursol D and the dehydrated alcohol of aforementioned proportion stirring reaction 3 hours at normal temperatures, suction filtration gained orange solids is salicylic aldehyde amine.
Embodiment 2
In the present embodiment, take by weighing 1g hydrogen phosphide cumene, 2g manganese oleate, 0.5g SODIUM PHOSPHATE, MONOBASIC, join respectively in the high-temperature high-pressure reaction kettle that 70g viscous crude and 30g water are housed, be warming up to 100 ℃ after the sealing, constant temperature 16 hours, slowly reduce the temperature to room temperature, add 0.1g sodium hydroxide, 0.2g tensio-active agent, be warming up to 200 ℃ after resealing, constant temperature 24 hours, slowly reduce the temperature to room temperature, pour out crude oil, survey viscosity of crude.Recording its viscosity break ratio is 98%.
Wherein each component is the commercial goods.
Embodiment 3
In the present embodiment, take by weighing 0.1g sodium hydroxide, the salicylic aldehyde amine of 0.1g joins respectively in the high-temperature high-pressure reaction kettle that 70g viscous crude and 30g water are housed, and is warming up to 200 ℃ after the sealing, and constant temperature 24 hours slowly reduces the temperature to room temperature, pours out crude oil, surveys viscosity of crude.Recording its viscosity break ratio is 92.4%.
The preparation method of the salicylic aldehyde amine of present embodiment is: with salicylic aldehyde, Ursol D and dehydrated alcohol is raw material, wherein, the weight percentage of each component is a salicylic aldehyde 10.2%, Ursol D 5.1%, dehydrated alcohol 84.7%, with salicylic aldehyde, Ursol D, dehydrated alcohol stirring reaction 4 hours at normal temperatures, suction filtration gained orange solids is salicylic aldehyde amine.
On-the-spot allocation method: at first, annotate the total amount that vapour amount, bed thickness are calculated required catalyzer, then by the consumption of required each the slug each component of aforementioned formula ratio calculating according to intending implementing well.During dosing, slug one first water with calculated amount adds the 10m with electronic whipping appts
3In the dosing pond, start stirrer, add the hydrogen phosphide cumene of calculated amount under agitation condition, the stratum is injected with cementing truck in the back that stirs; Then the water of calculated amount is added 10m with electronic whipping appts
3In the dosing pond, start stirrer, under agitation condition, add manganese oleate and stir, and then the aqueous solution of adding SODIUM PHOSPHATE, MONOBASIC, after mixing, add the sodium hydrate solid particle, adjust the pH value after specialized range, with the instillation pump with joining solution clamp-on the stratum; Slug two adds 10m with electronic whipping appts with the solvent of calculated amount
3In the dosing pond, start stirrer, under agitation condition, add sodium hydroxide, the salicylic aldehyde amine of calculated amount respectively, treat all dissolvings evenly after, with the instillation pump with joining solution clamp-on the stratum; Slug three first water with calculated amount add the 10m with electronic whipping appts
3In the dosing pond, start stirrer, under agitation condition, add the tensio-active agent and the sodium hydroxide of calculated amount respectively, after treating all to dissolve evenly, will dissolve uniform viscosity-depression agent solution with cementing truck and pump into the stratum, wait to annotate and resume production after vapour finishes stewing well.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. one kind is used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, it is characterized in that: combine by three slugs, wherein, slug one comprises following components in weight percentage content: hydrogen phosphide cumene 1-2%, manganese oleate 1-3%, SODIUM PHOSPHATE, MONOBASIC 0.2-0.5%, alkaline matter 0.1-0.5%, and all the other are water; Slug two comprises following components in weight percentage content: hydrothermal cracking and catalyzing agent 0.05-0.1%, alkaline matter 0.05-0.2%, and all the other are water; Slug three comprises following components in weight percentage content: tensio-active agent 0.1-0.5%, and alkaline matter 0.1-0.3%, all the other are water; Described alkaline matter is sodium hydroxide, potassium hydroxide or its mixture; Described hydrothermal cracking and catalyzing agent is a salicylic aldehyde amine; Described tensio-active agent is the lignin amphoterics.
2. the heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for according to claim 1, it is characterized in that: described alkaline matter is a sodium hydroxide.
3. the heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for according to claim 1, it is characterized in that: described salicylic aldehyde amine is that feedstock production forms by salicylic aldehyde, Ursol D and dehydrated alcohol, wherein, the weight percentage of each component is salicylic aldehyde 9.2-10.2%, Ursol D 4.1-5.1%, dehydrated alcohol 84.7-86.7%.
4. the heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent that is used for according to claim 3, it is characterized in that, the preparation method of described salicylic aldehyde amine is: with salicylic aldehyde, Ursol D, dehydrated alcohol stirring reaction 2-4 hour at normal temperatures, suction filtration gained orange solids was salicylic aldehyde amine.
5. one kind as claim 1, the 3 or 4 described preparation methods that are used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, it is characterized in that: may further comprise the steps,
Slug one:
(1) the dissolving hydrogen phosphide cumene stirred 1-2 hour;
(2) under 0-40 ℃ temperature, add manganese oleate, SODIUM PHOSPHATE, MONOBASIC mixing stirring 1-2 hour;
(3) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture, the solution with step (2) gained mixes then, stirs 1-2 hour;
Slug two:
(1) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture;
(2) under 0-40 ℃ temperature, add salicylic aldehyde amine and mix stirring 1-2 hour;
Slug three:
(1) dissolved hydrogen sodium oxide, potassium hydroxide or its mixture;
(2) under 0-40 ℃ temperature, add tensio-active agent and mix stirring 1-2 hour.
6. one kind as claim 1, the 3 or 4 described application that are used for heavy oil exploitation via steam injection assembly catalyze viscosity-depression agent, it is characterized in that: the viscosity-depression agent of slug one is to be injected into the stratum before steam treatment, the viscosity-depression agent of slug two is to inject the stratum in the process of steam treatment, the viscosity-depression agent of slug three be before steam treatment or the process of steam treatment in inject the stratum.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101717626B (en) * | 2009-11-27 | 2013-11-06 | 盘锦河升大地石油科技有限公司 | Application of methylnaphthalene in lowering viscosity of thickened oil |
| CN103374380B (en) * | 2012-04-26 | 2015-07-22 | 中国石油化工股份有限公司 | Method for gathering and transporting thickened oil |
| CN103849368B (en) * | 2014-03-12 | 2016-03-30 | 西安石油大学 | The preparation and application of viscous crude thermo-cracking catalyst system |
| CN105295881A (en) * | 2015-06-29 | 2016-02-03 | 戴文洁 | Thick oil molecule dispersion and emulsification composite viscosity reducer as well as preparation method and application thereof |
| CN105064962B (en) * | 2015-06-30 | 2019-04-05 | 中国石油化工股份有限公司 | A kind of nitrogen foam inhibits the oil production method of heavy crude heat extraction edge water propelling |
| CN105327716A (en) * | 2015-12-07 | 2016-02-17 | 宋宏婷 | Catalyst for injecting air into thick oil for oxidation and viscosity reduction |
| CN113403059B (en) * | 2021-05-27 | 2022-08-02 | 长江大学 | Combined catalytic viscosity reducer and application thereof |
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Owner name: HE NAN OILFIELD ENGINEERING CONSULTING CORPORATION Effective date: 20120802 |
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Effective date of registration: 20120802 Address after: 473132 No. 8 Wuyi village, Nanyang oil field, Henan, Nanyang, China Co-patentee after: Henan Oilfield Engineering Consulting Corporation Patentee after: Petroleum Engineering Technology Inst. Henan Oli Field Branch China Petrochemica Address before: 473132 No. 8 Wuyi village, Nanyang oil field, Henan, Nanyang, China Patentee before: Petroleum Engineering Technology Inst. Henan Oli Field Branch China Petrochemica |