CN102925129B - Hydrogenating hot gas chemical solution component and application thereof to viscous oil recovery - Google Patents
Hydrogenating hot gas chemical solution component and application thereof to viscous oil recovery Download PDFInfo
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- CN102925129B CN102925129B CN201210479941.9A CN201210479941A CN102925129B CN 102925129 B CN102925129 B CN 102925129B CN 201210479941 A CN201210479941 A CN 201210479941A CN 102925129 B CN102925129 B CN 102925129B
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Abstract
The invention belongs to the technical field of viscous oil recover, and in particular relates to a hydrogenating hot gas chemical solution component and application thereof to viscous oil recovery. The hydrogenating hot gas chemical solution component consists of a 1# solution and a 2# solution, wherein the mass ratio of the 1# solution to the 2# solution is 1:1; the 1# solution consists of 55.0 to 65.0 percent of ammonium nitrate NH4NO3, 15.0 to 23.0 percent of oxamide C2O2(NH2)2, 0.5 to 1.5 percent of cane sugar C12H22O11, 0.01 to 0.06 percent of potassium chloride KCl and 18.0 to 25.0 percent of water; and the 2# solution consists of 22.0 to 32.0 percent of sodium borohydride NaBH4, 15.0 to 28.0 percent of lithium aluminum hydride LiAlH4 and 40.0 to 54.0 percent of tetrachloroethylene C2Cl4. The hydrogenating hot gas chemical solution component integrates steam huff and puff, steam flooding and alkaline treatment, effectively reduces the viscosity of crude oil, removes blockage of the near-wellbore area and increases the productivity of single well.
Description
Technical field
The invention belongs to the Technology of Heavy Oil Recovery field, be specifically related to a kind of heat from hydrogenation chemistry solution component and the application of this solution component aspect Oil/gas Well viscous oil recovery, this solution component can reduce viscosity of thickened oil can improve again single well productivity.
Background technology
At present the exploitation of viscous crude is generally adopted to thermal recovery mode both at home and abroad, more conventional thermal recovery technology mainly contains the technology such as steam stimulation, steam flood, combustion in situ.
Steam stimulation method is first in oil well, to inject a certain amount of hot steam, then closing well for some time, and after the heat energy of steam spreads to oil reservoir, then opening well and making production.Although the once investment of cyclic steam stimulation is less, produce instant effect, its recovery ratio is lower, and along with the multicycle process output of handling up can be successively decreased rapidly.
Steam drive oil production, exactly by Injection Well continuously to the steam that injects high mass dryness fraction in oil reservoir, steam constantly heats oil reservoir, thereby reduces former oil viscosity.In Method In Steam Injection Process due to pit shaft inner fluid and the stratum temperature difference larger, therefore the portion of energy of steam can be scattered and disappeared by pit shaft.
Combustion in situ is that the method such as one electrically heated or chemistry makes reservoir temperature reach crude oil burning-point, and makes the oil production method of Crude Oil sustained combustion to oil reservoir injection air or oxygen.Its advantage is that recovery ratio is higher, and shortcoming is that implementing process difficulty is large, wayward underground combustion, cost costliness.
The heat from hydrogenation chemistry method of viscous oil recovery is to utilize the physics chemical action of the chemical reaction being injected between two kinds of working solutions in well to adjacent to oil well area, thereby reaches de-plugging viscosity reduction, improve the object of single well productivity.Compared with above-mentioned well stimulation, heat from hydrogenation chemistry method technique is simple, noenergy is lost, reaction process is controlled, recovery ratio is higher, can widespread use in heavy oil development.
Summary of the invention
The object of this invention is to provide a kind of component and the application of this solution component aspect Oil/gas Well viscous oil recovery that can reduce viscosity of thickened oil and can improve again the heat from hydrogenation chemistry oil output solution of single well productivity.
The present invention is achieved in that
First,, according to two kinds of working solutions of structural parameter preparations (No. 1 solution, No. 2 solution) of heavy oil wells, ensure that No. 1 solution and No. 2 liquor capacity sums are less than the volume of oil well reaction zone.The space (see figure 1) of reaction zone in referring to from artificial bottom of a well to perforation district upper surface sleeve pipe farthest.Calculate and guarantee that two kinds of solution fully react by chemical reaction.
No. 1 solution, calculates by quality and 100%, by 55.0～65.0% ammonium nitrate NH
4nO
3, 15.0～23.0% oxamide C
2o
2(NH
2)
2(in Chengdu, Pu Ji medication chemistry company limited buys), 0.5～1.5% sucrose C
12h
22o
11, 0.01～0.06% potassium chloride (KCl) and 18.0～25.0% water H
2o composition;
The preparation method of No. 1 solution:
1.1 press solution quality and 100% calculates, first to the oxamide that adds 15.0～23.0% in container;
After 1.2, pour 18.0～25.0% water into, fully stir 10～20 minutes;
1.3 add 55.0～65.0% ammonium nitrate again to the solution obtaining, fully stir 10～20 minutes;
1.4 finally add 0.5～1.5% sucrose and 0.01～0.06% Repone K, fully stir 10～20 minutes, have so just made solution No. 1.
No. 2 solution, calculate by quality and 100%, by 22.0～32.0% sodium borohydride NaBH
4(in Shanghai, a purple chemical reagent work buys), 15.0～28.0% lithium aluminum hydride LiAlH
4(in Shanghai, a purple chemical reagent work buys) and 40.0～54.0% zellon C
2cl
4(a purple chemical reagent work buys in Shanghai) composition.
The preparation method of No. 2 solution:
2.1 press solution quality and 100% calculates, and first in container, topples over 40.0～54.0% zellon C
2cl
4;
2.2 again to the sodium borohydride NaBH that adds 20.0～32.0% in container
4, fully stir 10～20 minutes;
In 2.3 the most backward containers, add 15.0～28.0% lithium aluminum hydride, fully stir 10～20 minutes, this has just made solution No. 2.
No. 1 solution and No. 2 solution that prepare are injected in Oil/gas Well by oil pipe successively, No. 1 solution and No. 2 solution sink to artificial bottom of a well (No. 1 solution and No. 2 solution 1:1 inputs in mass ratio) by self gravitation effect, and two kinds of solution start to occur chemical reaction in shaft bottom.Sucrose is the stablizer of whole reaction system, and Repone K is the conditioning agent of speed of response.
First, lithium aluminum hydride and water react and put out heat:
LiAlH
4+4H
2O=LiOH+Al(OH)
3+4H
2+Q ①
In the time that exceeding 90 DEG C, temperature will cause the reaction of sodium borohydride and water:
NaBH
4+4H
2O=NaOH+B(OH)
3+4H
2+Q ②
When 1. and 2. chemical reaction occurs, No. 1 solution dehydrates, ammonium nitrate generation pyrolysis, generates a large amount of gas and heat, and reaction equation is as follows:
NH
4NO
3→N
2O+2H
2O+Q ③
2NH
4NO
3→2N
2+4H
2O+O
2+Q ④
Reaction 3. and 4. liberated heat can make temperature further raise, thereby causes the pyrolysis of oxamide:
C
2O
2(NH
2)
2→(CN)
2+2H
2O ⑤
Under hot conditions, the cyanogen (CN) generating in reaction 5.
2can react with reacting the 4. middle oxygen generating, continue to emit amount of heat and gas.
(CN)
2+2O
2→2CO
2+N
2+Q ⑥
The gas that above-mentioned reaction discharges can carry heat and enter into oil reservoir by the perforation district of sleeve pipe, oil reservoir and crude oil in the suitable distance in immediate vicinity of wellbore are heated, the resistance that makes viscosity of crude reduce, flow to shaft bottom reduces, and mobility-thickness product increases, thereby improves crude production rate.
Former oil volume after being heated produces and expands, and the gas that enters into oil reservoir can be dissolved in pyrogen oil, has played the effect of steam flood, and recovery ratio is further improved.
Heavy crude reservoir is in oil recovery process, pitch and colloid are easy to stop up the nearly well band of oil reservoir, high-temperature gas also can make these organic macromolecule tamper fusings to the heating of oil reservoir, and also can make these macromolecular substance generation catalytic cracking and pyrolytic reactions under the condition existing at hydrogen, convert it into light ends, thereby realize the de-plugging of nearly well band.
In 2. generate thermokalite NaOH can with rock stratum main component silicon-dioxide SiO
2reaction:
2NaOH+SiO
2=Na
2SiO
3+H
2O ⑦
The water glass Na2SiO generating
3soluble in water, can make porosity increase, the rate of permeation of rock stratum improve, be beneficial to oil well production increasing.
As can be seen here, the heat from hydrogenation chemistry method for increasing yield of heavy oil wells integrates steam stimulation, steam flood and alkalinisation treatment, can effectively reduce viscosity of crude, removes the obstruction of immediate vicinity of wellbore, realizes the increase of single well productivity.
Brief description of the drawings
Fig. 1: structure of oil well schematic diagram;
Wherein: well head 1; Oil pipe 2; Sleeve pipe 3; Perf 4; Artificial bottom of a well 5; Oil reservoir 6;
Embodiment
Embodiment 1: the heat from hydrogenation chemistry volume increase test of No. 1 oil well of Jilin Oil Field
The geologic condition of No. 1 oil well and correlation parameter: reservoir lithology is mainly siltstone, packsand takes second place; Average pore 18.3%, rate of permeation 56.2 × 10
-3μ m
2; Casing diameter
artificial bottom of a well 969.72m; Perforation scope 894～923m; Stimulation work production fluid day before yesterday 1.0t, wherein day produce oil 0.4t; Viscosity of crude (50 DEG C) is 382.6mPa.s; Show that by above data reaction zone volume is 914.4L.Prepare No. 1 solution 520kg, No. 2 solution 520kg.
No. 1 solution composition comprises: ammonium nitrate NH
4nO
3, oxamide C
2o
2(NH
2)
2, sucrose C
12h
22o
11, potassium chloride (KCl), water H
2o, separately shared mass percent: 55%, 23%, 0.5%, 0.01%, 21.49%.The quality of each component is respectively: ammonium nitrate 286kg, oxamide 119.6kg, sucrose 2.6kg, Repone K 0.052kg, water 111.748kg.
No. 2 solution composition comprises: sodium borohydride NaBH
4, lithium aluminum hydride LiAlH
4, zellon C
2cl
4, shared mass percent separately: 22%, 26%, 52%.The quality of each component is respectively: sodium borohydride 114.4kg, lithium aluminum hydride 135.2kg, zellon 270.4kg.
On May 2nd, 2011, is injected into No. 1 solution and No. 2 solution in well by oil pipe successively, and closing well reaction was resumed production after 12 hours.
After processing by the well stimulation of heat from hydrogenation chemistry, viscosity of crude (50 DEG C) drops to 46.8mPa.s by original 382.6mPa.s, and viscosity break ratio is 88%.No. 1 oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 1.0t, and day produce oil 0.4t, after stimulation work, initial stage liquid, oil yield reach respectively 10.7t, 3.8t, and by the end of effective producing days 370 days on June 20th, 2012, accumulative total increases oily 408.9 tons;
Embodiment 2: the heat from hydrogenation chemistry volume increase test of No. 2 oil wells of Jilin Oil Field
The geologic condition of No. 2 oil wells and correlation parameter: reservoir lithology is mainly siltstone, packsand takes second place; Average pore 18.0%, rate of permeation 55.7 × 10
-3μ m
2; Casing diameter
artificial bottom of a well 1005.25m; Perforation scope 940.6-943.8m; Stimulation work production fluid day before yesterday 2.5t, wherein day produce oil 1.0t; Viscosity of crude (50 DEG C) is 347.8mPa.s; Show that by above data reaction zone volume is 780.7 liters.Prepare No. 1 solution 390kg, No. 2 solution 390kg.
No. 1 solution composition comprises: ammonium nitrate NH
4nO
3, oxamide C
2o
2(NH
2)
2, sucrose C
12h
22o
11, potassium chloride (KCl), water H
2o, separately shared mass percent: 59%, 16%, 1%, 0.03%, 23.97%.The quality of each component is respectively: ammonium nitrate 230.1kg, oxamide 62.4kg, sucrose 3.9kg, Repone K 0.117kg, water 93.483kg.
No. 2 solution composition comprises: sodium borohydride NaBH
4, lithium aluminum hydride LiAlH
4, zellon C
2cl
4, shared mass percent separately: 32%, 28%, 40%.The quality of each component is respectively: sodium borohydride 124.8kg, lithium aluminum hydride 109.2kg, zellon 156kg.
On May 2nd, 2011, is injected into No. 1 solution and No. 2 solution in well by oil pipe successively, and closing well reaction was resumed production after 12 hours.
After processing by the well stimulation of heat from hydrogenation chemistry, viscosity of crude (50 DEG C) drops to 43.2mPa.s by original 347.8mPa.s, and viscosity break ratio is 87.6%.No. 2 oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 2.5t, and day produce oil 1.0t, after stimulation work, initial stage liquid and oil yield reach respectively 15.6t and 5.3t, and by the end of effective producing days 365 days on June 20th, 2012, accumulative total increases oily 439 tons.
Embodiment 3: the heat from hydrogenation chemistry volume increase test of No. 3 oil wells of Jilin Oil Field
The geologic condition of No. 3 oil wells and correlation parameter: reservoir lithology is mainly siltstone, packsand takes second place; Average pore 17.2%, rate of permeation 53.6 × 10
-3μ m
2; Casing diameter
artificial bottom of a well 1077.6m; Perforation scope 987.2-992.0m; Stimulation work production fluid day before yesterday 1.8t, wherein day produce oil 0.7t; Viscosity of crude (50 DEG C) is 413.5mPa.s; Can show that by above data reaction zone volume is 1091.7 liters.Prepare No. 1 solution 650kg, No. 2 solution 650kg.
No. 1 solution composition comprises: ammonium nitrate NH
4nO
3, oxamide C
2o
2(NH
2)
2, sucrose C
12h
22o
11, potassium chloride (KCl), water H
2o, separately shared mass percent: 65%, 15%, 1.5%, 0.06%, 18.44%.The quality of each component is respectively: ammonium nitrate 422.5kg, oxamide 97.5kg, sucrose 9.75kg, Repone K 0.39kg, water 119.86kg.
No. 2 solution composition comprises: sodium borohydride NaBH
4, lithium aluminum hydride LiAlH
4, zellon C
2cl
4, shared mass percent separately: 31%, 15%, 54%.The quality of each component is respectively: sodium borohydride 201.5kg, lithium aluminum hydride 97.5kg, zellon 351kg.
On May 2nd, 2011, is injected into No. 1 solution and No. 2 solution in well by oil pipe successively, and closing well reaction was resumed production after 12 hours.
After processing by the well stimulation of heat from hydrogenation chemistry, viscosity of crude (50 DEG C) drops to 50.9mPa.s by original 413.5mPa.s, and viscosity break ratio is 87.7%.No. 3 oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 1.8t, and day produce oil 0.7t, after stimulation work, initial stage liquid and oil yield reach respectively 7.4t and 3.2t, and by the end of effective producing days 380 days on June 20th, 2012, accumulative total increases oily 398 tons.
Claims (3)
1. a heat from hydrogenation chemistry solution component, it is characterized in that: No. 1 solution and No. 2 solution compositions that are 1:1 by mass ratio, No. 1 solution and No. 2 solution that prepare are injected in Oil/gas Well by oil pipe successively, No. 1 solution and No. 2 solution sink to artificial bottom of a well by self gravitation effect, and two kinds of solution start to occur chemical reaction in shaft bottom; Calculate by quality and 100%, No. 1 solution is by 55.0～65.0% ammonium nitrate NH
4n О
3, 15.0～23.0% oxamide C
2o
2(NH
2)
2, 0.5～1.5% sucrose C
12h
22o
11, 0.01～0.06% potassium chloride (KCl) and 18.0～25.0% water Н
2О composition; No. 2 solution is by 22.0～32.0% sodium borohydride NaBH
4, 15.0～28.0% lithium aluminum hydride LiAlH
4with 40.0～54.0% zellon C
2cl
4composition.
2. the application of a kind of heat from hydrogenation chemistry solution component claimed in claim 1 aspect Oil/gas Well viscous oil recovery.
3. the application of a kind of heat from hydrogenation chemistry solution component as claimed in claim 2 aspect Oil/gas Well viscous oil recovery, is characterized in that: the volume sum of No. 1 solution and No. 2 solution is less than the volume of Oil/gas Well reaction zone.
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| CN103939068A (en) * | 2014-04-16 | 2014-07-23 | 东北石油大学 | Method for exploiting thickened oil or asphalt |
| CN105238382A (en) * | 2015-10-13 | 2016-01-13 | 中国石油天然气股份有限公司 | Clean self-thermogenesis pressurization reservoir reconstruction liquid and preparation method thereof |
| CN105672963B (en) * | 2016-01-06 | 2017-11-21 | 吉林冠通能源科技有限公司 | A kind of well production increment method that hydrogen component is released using hydration reaction |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4590997A (en) * | 1985-01-28 | 1986-05-27 | Mobil Oil Corporation | Controlled pulse and peroxide fracturing combined with a metal containing proppant |
| CN101230261A (en) * | 2008-01-09 | 2008-07-30 | 韩炜 | New method for oil well yield increasing and hydrogen release active reagent components |
-
2012
- 2012-11-22 CN CN201210479941.9A patent/CN102925129B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4590997A (en) * | 1985-01-28 | 1986-05-27 | Mobil Oil Corporation | Controlled pulse and peroxide fracturing combined with a metal containing proppant |
| CN101230261A (en) * | 2008-01-09 | 2008-07-30 | 韩炜 | New method for oil well yield increasing and hydrogen release active reagent components |
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Effective date of registration: 20190429 Address after: 130012 Room 101, 4th Floor, No. 11 Residential Building, South Campus, Jilin University, Changchun High-tech Development Zone, Jilin Province Patentee after: Jilin Guantong Energy Technology Co., Ltd. Address before: 130012 No. 191 Chaoqun Street, Changchun High-tech Zone, Jilin Province Patentee before: Jilin Guantong Energy Science & Technology Co., Ltd. |
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