CN102925129A - 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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- CN102925129A CN102925129A CN2012104799419A CN201210479941A CN102925129A CN 102925129 A CN102925129 A CN 102925129A CN 2012104799419 A CN2012104799419 A CN 2012104799419A CN 201210479941 A CN201210479941 A CN 201210479941A CN 102925129 A CN102925129 A CN 102925129A
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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 the Oil/gas Well viscous oil recovery, this solution component namely can reduce viscosity of thickened oil can improve single well productivity again.
Background technology
At present the thermal recovery mode is generally adopted in the exploitation of viscous crude both at home and abroad, thermal recovery technology commonly used mainly contains the technology such as steam stimulation, steam flood, combustion in situ.
The steam stimulation method is first to inject a certain amount of hot steam in oil well, closing well for some time then, until the heat energy of steam after the oil reservoir diffusion, opening well and making production again.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 is exactly the steam that is continuously injected high mass dryness fraction by Injection Well in the oil reservoir, and steam constantly heats oil reservoir, thereby reduces the viscosity of crude oil.Because pit shaft inner fluid and the stratum temperature difference are larger, so the portion of energy of steam can be lost by pit shaft in Method In Steam Injection Process.
Combustion in situ is a kind ofly to make reservoir temperature reach the crude oil burning-point with methods such as electrically heated or chemistry, and injects the oil production method that air or oxygen makes the Crude Oil sustained combustion to oil reservoir.Its advantage is that recovery ratio is higher, and shortcoming is that the implementing process difficulty is large, wayward underground combustion, and cost is expensive.
The heat from hydrogenation chemistry method of viscous oil recovery is to utilize chemical reaction between two kinds of working solutions being injected in the well to the physics chemical action of adjacent to oil well area, thereby reaches the de-plugging viscosity reduction, improve the purpose of single well productivity.Compare 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 purpose of this invention is to provide and a kind ofly can reduce component and the application of this solution component aspect the Oil/gas Well viscous oil recovery that viscosity of thickened oil can improve again the heat from hydrogenation chemistry oil output solution of single well productivity.
The present invention is achieved in that
At first, according to the structural parameter of heavy oil wells preparation two kinds of working solutions (No. 1 solution, No. 2 solution), guarantee that No. 1 solution and No. 2 liquor capacity sums are less than the volume of oil well reaction zone.Space (see figure 1) in reaction zone refers to from the artificial bottom of a well to perforation district upper surface sleeve pipe farthest.Guarantee that by chemical reaction calculating two kinds of solution fully react.
No. 1 solution calculates the ammonium nitrate NH by 55.0～65.0% by quality and 100%
4NO
3, 15.0～23.0% oxamide C
2O
2(NH
2)
2(in Chengdu general Ji medication chemistry company limited buy), 0.5～1.5% sucrose C
12H
22O
11, 0.01～0.06% potassium chloride (KCl) and 18.0～25.0% water H
2O forms;
The preparation method of No. 1 solution:
Calculate 1.1 press solution quality and 100%, at first add 15.0～23.0% oxamide in the container;
1.2 pour afterwards 18.0～25.0% water into, fully stirred 10～20 minutes;
1.3 to the ammonium nitrate of the solution adding 55.0～65.0% that obtains, fully stirred 10～20 minutes again;
1.4 add at last 0.5～1.5% sucrose and 0.01～0.06% Repone K, fully stirred 10～20 minutes, so just made solution No. 1.
No. 2 solution calculate the sodium borohydride NaBH by 22.0～32.0% by quality and 100%
4(a purple chemical reagent work buys in Shanghai), 15.0～28.0% lithium aluminum hydride LiAlH
4(a purple chemical reagent work buys in Shanghai) and 40.0～54.0% zellon C
2Cl
4(a purple chemical reagent work buys in Shanghai) forms.
The preparation method of No. 2 solution:
Calculate 2.1 press solution quality and 100%, at first in container, topple over 40.0～54.0% zellon C
2Cl
4
2.2 add again 20.0～32.0% sodium borohydride NaBH in the container
4, fully stirred 10～20 minutes;
2.3 add 15.0～28.0% lithium aluminum hydride in the most backward container, fully stirred 10～20 minutes, this has just made solution No. 2.
No. 1 solution and No. 2 solution of preparing are injected in the 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 in mass ratio 1:1 inputs of solution) by the self gravitation effect, and two kinds of solution begin to occur chemical reaction in the shaft bottom.Sucrose is the stablizer of whole reaction system, and Repone K is the conditioning agent of speed of response.
At first, lithium aluminum hydride and steeping in water for reconstitution are given birth to reaction and are put out heat:
LiAlH
4+4H
2O=LiOH+Al(OH)
3+4H
2+Q ①
When surpassing 90 ℃, 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) that generates in the reaction 5.
2Can react with the oxygen of generation in the reaction 4., 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 the perforation district of heat by sleeve pipe and enter into oil reservoir, immediate vicinity of wellbore quite interior oil reservoir and the crude oil of distance is heated, reduce so that viscosity of crude reduces, flows to the resistance in shaft bottom, 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 under the condition that hydrogen exists, also can make these macromolecular substance generation catalytic cracking and pyrolytic reactions, convert it into light ends, thereby realize the de-plugging of nearly well band.
The thermokalite NaOH that in 2., generates can with rock stratum main component silicon-dioxide SiO
2Reaction:
2NaOH+SiO
2=Na
2SiO
3+H
2O ⑦
The water glass Na2SiO that generates
3Soluble in water, porosity increase, the rate of permeation of rock stratum are improved, be beneficial to oil well production increasing.
This shows that 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, remove the obstruction of immediate vicinity of wellbore, realize the increase of single well productivity.
Description of drawings
Fig. 1: structure of oil well synoptic 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, and packsand takes second place; Average pore 18.3%, rate of permeation 56.2 * 10
-3μ m
2Casing 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 ℃) is 382.6mPa.s; Drawing the reaction zone volume by above data 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 was injected into No. 1 solution and No. 2 solution in the well by oil pipe successively, and the closing well reaction was resumed production after 12 hours.
After heat from hydrogenation chemistry well stimulation processing, viscosity of crude (50 ℃) drops to 46.8mPa.s by original 382.6mPa.s, and viscosity break ratio is 88%.No. 1 the oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 1.0t, and day produce oil 0.4t, initial stage liquid, oil yield reach respectively 10.7t, 3.8t after the stimulation work, 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, and packsand takes second place; Average pore 18.0%, rate of permeation 55.7 * 10
-3μ m
2Casing 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 ℃) is 347.8mPa.s; Drawing the reaction zone volume by above data 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 was injected into No. 1 solution and No. 2 solution in the well by oil pipe successively, and the closing well reaction was resumed production after 12 hours.
After heat from hydrogenation chemistry well stimulation processing, viscosity of crude (50 ℃) drops to 43.2mPa.s by original 347.8mPa.s, and viscosity break ratio is 87.6%.No. 2 the oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 2.5t, and day produce oil 1.0t, initial stage liquid and oil yield reach respectively 15.6t and 5.3t after the stimulation work, 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, and packsand takes second place; Average pore 17.2%, rate of permeation 53.6 * 10
-3μ m
2Casing 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 ℃) is 413.5mPa.s; Can draw the reaction zone volume by above data 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 was injected into No. 1 solution and No. 2 solution in the well by oil pipe successively, and the closing well reaction was resumed production after 12 hours.
After heat from hydrogenation chemistry well stimulation processing, viscosity of crude (50 ℃) drops to 50.9mPa.s by original 413.5mPa.s, and viscosity break ratio is 87.7%.No. 3 the oil well production increasing phenomenon is obvious, stimulation work production fluid day before yesterday 1.8t, and day produce oil 0.7t, initial stage liquid and oil yield reach respectively 7.4t and 3.2t after the stimulation work, and by the end of effective producing days 380 days on June 20th, 2012, accumulative total increases oily 398 tons.
Claims (3)
1. heat from hydrogenation chemistry solution component is characterized in that: be No. 1 solution and No. 2 solution compositions of 1:1 by mass ratio, calculate by quality and 100% that No. 1 solution is by 55.0～65.0% ammonium nitrate NH
4NO
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 H
2O forms; 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
4Form.
2. the application of a kind of heat from hydrogenation chemistry solution component claimed in claim 1 aspect the 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 the Oil/gas Well viscous oil recovery, it 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105672963A (en) * | 2016-01-06 | 2016-06-15 | 吉林冠通能源科技有限公司 | Oil gas well yield increase method using hydration reaction hydrogen release component |
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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105672963A (en) * | 2016-01-06 | 2016-06-15 | 吉林冠通能源科技有限公司 | Oil gas well yield increase method using hydration reaction hydrogen release component |
| 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 |
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| CN102925129B (en) | 2014-10-15 |
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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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