CN102936492A - Thermochemical yield increase solution composition applicable to low-permeability condensate well - Google Patents
Thermochemical yield increase solution composition applicable to low-permeability condensate well Download PDFInfo
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- CN102936492A CN102936492A CN2012104799334A CN201210479933A CN102936492A CN 102936492 A CN102936492 A CN 102936492A CN 2012104799334 A CN2012104799334 A CN 2012104799334A CN 201210479933 A CN201210479933 A CN 201210479933A CN 102936492 A CN102936492 A CN 102936492A
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Abstract
The invention belongs to the technical field of oil gas extraction, and particularly relates to a thermochemical yield increase solution composition capable of enhancing productivity of a low-permeability condensate gas reservoir. The composition is composed of a solution 1 and a solution 2 in a mass ratio of 1:1, wherein the solution 1 is composed of ammonium nitrate NH4NO3, dinitramide NH4N(NO2), nitrocellulose C24H29O9(NO3)11, hexamethylenetetramine C6H12N4 and water H2O; and the solution 2 is composed of urea CO(NH2)2, sodium nitrate NaNO2, sodium hydride NaH, sodium borohydride NaBH4 and tetrachloroethylene C2Cl4. As the reaction continuously proceeds, more and more gas and heat continuously enter the rock stratum, so that the pressure sharply increases, and original cracks are enlarged to generate more new cracks, thereby solving the problem of yield decrease due to lowered near-well-bore permeability in the extraction process.
Description
Technical field
The invention belongs to the oil-gas mining technical field, be specifically related to a kind of thermochemistry volume increase solution component that can be used for improving the low-permeability Condensate Gas Reservoir Productivity.
Background technology
China generally adopts the reoovery method of depletion or cyclic gas injection to the used method of Condensate Gas Reservoir exploitation at present.Although adopt the During Natural Depletion mode can cause a large amount of liquid hydrocarbons because retrograde fall out is lost in the middle of the stratum, low owing to this kind development scheme investment cost, recoup the investment soon, so it is still the main development scheme of China's Condensate Gas Reservoir.
So far, the a lot of Condensate Gas Reservoir of China all is in the middle and later periods of During Natural Depletion, stratum retrograde fall out phenomenon is serious, the particularly existence of immediate vicinity of wellbore pressure cone of depression, the condensate oil of separating out is more, severe contamination the reservoir around the pit shaft, cause seepage resistance to increase to cause many mouthfuls of wells to stop production or can't normally produce, affect the whole development effect of hydrocarbon-bearing pool, thereby cause whole hydrocarbon-bearing pool condensate oil recovery ratio low.
The heat from hydrogenation chemistry method for increasing yield of low-permeability oil gas reservoir is to utilize chemical reaction between two kinds of working solutions being injected in the well to the physics chemical action of Oil/gas Well immediate vicinity of wellbore, thereby improves the rate of permeation of immediate vicinity of wellbore, improves single well productivity.Heat from hydrogenation chemistry method technique is simple, cost is low, be not subjected to impact, volume increase longer duration, the recovery ratio of zone thickness and well depth condition higher, can use in the exploitation of hyposmosis Condensate Gas Reservoir.
Summary of the invention
The purpose of this invention is to provide a kind of thermochemistry volume increase solution component, by improving the rate of permeation of gas condensate reservoir ore bed, increase oil and gas production.
The present invention is achieved in that and prepares first two kinds of working solutions: No. 1 solution (fuel oxidizer) and No. 2 solution (fuel oxidizer of initiation reaction), with No. 1 solution preparing and No. 2 solution in mass ratio 1:1 be injected in the well successively.
No. 1 solution (fuel oxidizer) calculates the ammonium nitrate NH by 50～53% by quality and 100%
4NO
3, 12～14% Zoamix NH
4N (NO
2), 13～19% nitrocellulose C
24H
29O
9(NO
3)
11(grasping strange Chemical Industry Science Co., Ltd in Shanghai buys), 1.0～2.0% antiknock dope vulkacit H C
6H
12N
4(westernization instrument Science and Technology Ltd. buys in Beijing), 15～19% water H
2O forms.
The preparation method of No. 1 solution:
Calculate 1.1 press the quality and 100% of solution, at first add 50～53% ammonium nitrate in the container, pour subsequently 15～19% water into, stirred 10～20 minutes;
1.2 add afterwards 12～14% Zoamix, stirred 10～20 minutes;
1.3 to the nitrocellulose of the solution adding 13～19% that obtains, stirred 10～20 minutes again;
1.4 add at last 1.0～2.0% vulkacit H, fully stirred 10～20 minutes, so just made solution No. 1.
No. 2 solution (fuel oxidizer of initiation reaction) calculate the urea CO (NH by 34.5～37.1% by quality and 100%
2)
2, 25～34% Sodium Nitrite NaNO
2, 5～7% sodium hydride NaH, 10～12% sodium borohydride NaBH
4(a purple chemical reagent work buys in Shanghai) and 15～21% zellon C
2Cl
4(a purple chemical reagent work buys in Shanghai) forms.
The preparation method of No. 2 solution:
Calculate 2.1 press the quality and 100% of solution, at first add 34.5～37.1% urea and 25～34% Sodium Nitrite in the container, stirred 10～20 minutes;
2.2 then topple over 15～21% zellon in the container, stirred 10～20 minutes;
2.3 add again 10～12% sodium borohydride in the container;
2.3 add 5～7% sodium hydride in the most backward container, stirred 10～20 minutes, this has just made solution No. 2.
Begin to discharge the reaction of the gentle body of hot gas after two portions component injects ore bed respectively, that at first occur is NaH and NaBH
4The reaction response equation as follows:
NaH+H
2O=NaOH+H
2+Q ①
NaBH
4+4H
2O=NaOH+B(OH)
3+4H
2+Q ②
Utilize sodium borohydride and sodium hydride as the burning initiator, behind the contact water, react.Discharge immediately the hydrogen that has in a large number high penetrating power, infiltrate fast shake and impel higher hydrocabon cracking and pyrolysis.And promoted the growth in crack and produced new crack.
The basic energy that the fuel oxidizer reaction discharges all is penetrated in the middle of the crack of ore bed, does not stay the shaft bottom.Such heat treating method is more effective.
The component that produces gas begins to react and emits gas:
NaNO
2+CO(NH
2)
2+H
+=2N
2+CO
2+3H
2O+Na
++Q ③
React 3. and occur under the sour environment, the hydrolysis of ammonium nitrate occurs afterwards:
NH
4NO
3+H
2O=H
++NO
3 -+NH
4OH
The heat that front three-step reaction produces has promoted Zoamix (NH
4N (NO
2)) decomposition:
NH
4N(NO
2)
2→N
2O+NH
4NO
3 ④
After this, 1. and 2. reaction makes the fuel oxidizer mixture temperature rise and dehydration, and decomposition has occured ammonium nitrate, and therefore 4. reaction also occur, and fuel oxidizer also has following reaction in addition:
NH
4NO
3→N
2O+2H
2O+Q ⑤
2NH
4NO
3→2N
2+4H
2O+O
2+Q ⑥
Collodion cotton C has also occured
24H
29O
9(NO3)
11Decomposition:
C
24H
29O
9(NO3)
11→41CO+7CO
2+29H
2O+11N
2+Q ⑦
The partially oxidized generation carbonic acid gas of formed carbon monoxide CO CO
2:
2CO+O
2=2CO
2+Q ⑧
7. and the CO that 8. generates reaction
2Enter into the shaft bottom, be dissolved in the water, reduced gas-liquid surface tension force and reduced corresponding capillary pressure, greatly improved the rate of permeation of gas well immediate vicinity of wellbore, carbonic acid gas is partly replaced the water in the particulate, so that condensation gas emits.Continuous intensification along with reaction, have increasing gas and heat and constantly enter into the rock stratum, pressure is sharply risen, produce more new crack on the basis that enlarges primary fracture, reduce the production declining problem that causes thereby solved in recovery process because of near-well-bore permeability.
Description of drawings
Fig. 1: gas well structural representation; Wherein: 1 well head; 2 oil pipes; 3 sleeve pipes; 4 perfs; 5 artificials bottom of a well; 6 oil (gas) layer;
Embodiment
Embodiment 1: Crude Oil gas field No. 1 gas-condensate well thermochemistry stimulation work.
The geologic condition of No. 1 gas-condensate well and correlation parameter: husky three times inferior sections; The mesopore Low-permeability Gas Reservoirs; Casing diameter
Well depth 4101.00m; Artificial bottom of a well 4070.00m; Perforation scope 3703.2-3967.7m; Tubing diameter
Daily gas 460m before the stimulation work
3Can draw the reaction zone volume by above data is 8.22m
3Prepare No. 1 solution 3.86m
3, No. 2 solution 3.14m
3, quality is 5020kg.
No. 1 solution comprises: ammonium nitrate NH
4NO
3, Zoamix NH
4N (NO
2), nitrocellulose C
24H
29O
9(NO3)
11, vulkacit H C
6H
12N
4, water H
2O is shared mass percent separately: 50%, 13%, 17%, 2.0%, 18.0%; The quality of each component is respectively: ammonium nitrate 2510kg, Zoamix 652.6kg, nitrocellulose 853.4kg, vulkacit H 100.4kg, water 903.6kg.
No. 2 solution comprises: urea CO (NH
2)
2, Sodium Nitrite NaNO
2, sodium hydride NaH, sodium borohydride NaBH
4, zellon C
2Cl
4, shared mass percent separately: 34.5%, 34%, 5%, 10.5%, 16%.The quality of each component is respectively: urea 1731.9kg, Sodium Nitrite 1706.8kg, sodium hydride 251kg, sodium borohydride 527.1kg, zellon 803.2kg.
On December 23rd, 2011, with No. 1 solution, No. 2 solution is injected in the well by oil pipe successively.By checking the record of production discovery, No. 1 the oil/gas well stimulation phenomenon is obvious, before the stimulation work, and daily gas 460m
3, daily gas 6987.2m after the stimulation work
3, totally increase gas 932000m on May 8th, 2012
3
Embodiment 2: Crude Oil gas field No. 2 gas-condensate well thermochemistrys stimulation work.
The geologic condition of No. 2 gas-condensate wells and correlation parameter: husky three times inferior sections; The mesopore Low-permeability Gas Reservoirs; Casing diameter
Well depth 3960.00m; Artificial bottom of a well 3900.00m; Perforation scope 3645.2-3790.6m; Tubing diameter
Daily gas 153m before the stimulation work
3Can draw the reaction zone volume by above data is 9.12m
3Prepare No. 1 solution 4.4m
3, No. 2 solution 3.6m
3, quality is 5720kg.
No. 1 solution comprises: ammonium nitrate NH
4NO
3, Zoamix NH
4N (NO
2), nitrocellulose C
24H
29O
9(NO3)
11, vulkacit H C
6H
12N
4, water H
2O is shared mass percent separately: 53%, 14%, 13%, 1.0%, 19%; The quality of each component is respectively: ammonium nitrate 3031.6kg, Zoamix 800.8kg, nitrocellulose 743.6kg, vulkacit H 57.2kg, water 1086.8kg.
No. 2 solution comprises: urea CO (NH
2)
2, Sodium Nitrite NaNO
2, sodium hydride NaH, sodium borohydride NaBH
4, zellon C
2Cl
4, shared mass percent separately: 37.1%, 31%, 5.9%, 10%, 15%.The quality of each component is respectively: urea 2122.12kg, Sodium Nitrite 1773.2kg, sodium hydride 337.48kg, sodium borohydride 572kg, zellon 858kg.
On December 23rd, 2011, with No. 1 solution, No. 2 solution is injected in the well by oil pipe successively.
By checking the record of production discovery, No. 1 the oil/gas well stimulation phenomenon is obvious, before the stimulation work, and daily gas 153m
3, daily gas 1408m after the stimulation work
3, totally increase gas 150872m on May 8th, 2012
3Embodiment 3: Crude Oil gas field No. 3 gas-condensate well thermochemistrys stimulation work.
The geologic condition of No. 3 oil wells and correlation parameter: husky three times inferior sections; The mesopore Low-permeability Gas Reservoirs; Casing diameter
Well depth 3980.00m; Artificial bottom of a well 3914.00m; Perforation scope 3751.2-3830.1m; Tubing diameter
Daily gas 95m before the stimulation work
3Can draw the reaction zone volume by above data is 5.73m
3Prepare No. 1 solution 2.75m
3, No. 2 solution 2.25m
3, quality is 3575kg.
No. 1 solution comprises: ammonium nitrate NH
4NO
3, Zoamix NH
4N (NO
2), nitrocellulose C
24H
29O
9(NO3)
11, vulkacit H C
6H
12N
4, water H
2O is shared mass percent separately: 52.5%, 12%, 19%, 1.5%, 15%; The quality of each component is respectively: ammonium nitrate 1876kg, Zoamix 429kg, nitrocellulose 679.25kg, vulkacit H 54kg, water 536kg.
No. 2 solution comprises: urea CO (NH
2)
2, Sodium Nitrite NaNO
2, sodium hydride NaH, sodium borohydride NaBH
4, zellon C
2Cl
4, shared mass percent separately: 35%, 25%, 7%, 12%, 21%.The quality of each component is respectively: urea 1251kg, Sodium Nitrite 894kg, sodium hydride 250.25kg, sodium borohydride 429kg, zellon 750.3kg.
On December 23rd, 2011, with No. 1 solution, No. 2 solution is injected in the well by oil pipe successively.
By checking the record of production discovery, No. 1 the oil/gas well stimulation phenomenon is obvious, before the stimulation work, and daily gas 95m
3, daily gas 1174.3m after the stimulation work
3, totally increase gas 125064m on May 8th, 2012
3
Claims (2)
1. thermochemistry volume increase solution component that is applied to the hyposmosis condensate well is characterized in that: be No. 1 solution and No. 2 solution compositions of 1:1 by mass ratio, calculate by quality and 100%, No. 1 solution is by 50～53% ammonium nitrate NH
4NO
3, 12～14% Zoamix NH
4N (NO
2), 13～19% nitrocellulose C
24H
29O
9(NO
3)
11, 1.0～2.0% antiknock dope vulkacit H C
6H
12N
4, 15～19% water H
2O forms; No. 2 solution is by 34.5～37.1% urea CO (NH
2)
2, 25～34% Sodium Nitrite NaNO
2, 5～7% sodium hydride NaH, 10～12% sodium borohydride NaBH
4With 15～21% zellon C
2Cl
4Form.
2. a kind of thermochemistry that is applied to the hyposmosis condensate well as claimed in claim 1 is increased production the solution component, and 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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|---|---|---|---|
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|---|---|---|---|
| CN201210479933.4A CN102936492B (en) | 2012-11-22 | 2012-11-22 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
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| CN102936492B CN102936492B (en) | 2014-07-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694839A (en) * | 2016-01-06 | 2016-06-22 | 吉林冠通能源科技有限公司 | Hydrogenated hot gas chemical solution component and application thereof in increasing yield of horizontal well |
| CN112272731A (en) * | 2018-06-14 | 2021-01-26 | “西布涅弗捷玛什”股份公司 | Method for thermochemical treatment of oil reservoirs |
| CN115806458A (en) * | 2022-12-06 | 2023-03-17 | 西安近代化学研究所 | Modified nitrocotton coating material, preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201210479933.4A patent/CN102936492B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694839A (en) * | 2016-01-06 | 2016-06-22 | 吉林冠通能源科技有限公司 | Hydrogenated hot gas chemical solution component and application thereof in increasing yield of horizontal well |
| CN105694839B (en) * | 2016-01-06 | 2018-09-21 | 吉林冠通能源科技有限公司 | A kind of heat from hydrogenation chemistry solution components and its application in horizontal well volume increase |
| CN112272731A (en) * | 2018-06-14 | 2021-01-26 | “西布涅弗捷玛什”股份公司 | Method for thermochemical treatment of oil reservoirs |
| CN115806458A (en) * | 2022-12-06 | 2023-03-17 | 西安近代化学研究所 | Modified nitrocotton coating material, preparation method and application thereof |
| CN115806458B (en) * | 2022-12-06 | 2024-03-29 | 西安近代化学研究所 | Modified nitrocotton coating material, preparation method and application thereof |
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Inventor after: Han Wei Inventor after: Simono Aleksey Inventor after: Li Zixuan Inventor after: Zhou Liang Inventor before: Simono Aleksey Inventor before: Han Wei Inventor before: Li Zixuan Inventor before: Zhou Liang |
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Effective date of registration: 20190425 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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