CN102936492B - 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
- Publication number
- CN102936492B CN102936492B CN201210479933.4A CN201210479933A CN102936492B CN 102936492 B CN102936492 B CN 102936492B CN 201210479933 A CN201210479933 A CN 201210479933A CN 102936492 B CN102936492 B CN 102936492B
- Authority
- CN
- China
- Prior art keywords
- solution
- gas
- well
- permeability
- sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Fuel Cell (AREA)
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 oil-gas mining technical field, be specifically related to a kind of thermochemistry volume increase solution component that can be used for improving low-permeability Condensate Gas Reservoir Productivity.
Background technology
China exploits to Condensate Gas Reservoir the reoovery method that method used generally adopts exhaustion or cyclic gas injection at present.Although adopt During Natural Depletion mode can cause a large amount of liquid hydrocarbons because retrograde fall out is lost in the middle of stratum, because this kind of development scheme investment cost is low, 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 is the middle and later periods in During Natural Depletion all, 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 pit shaft reservoir around, cause seepage resistance to increase and cause many mouthfuls of wells stop production or cannot 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 the chemical reaction be injected between two kinds of working solutions in the well physics chemical action to 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 subject to the impact of zone thickness and well depth condition, the volume increase time length is long, recovery ratio is higher, can application in the exploitation of hyposmosis Condensate Gas Reservoir.
Summary of the invention
The object 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 first prepares two kinds of working solutions: No. 1 solution (fuel oxidizer) and No. 2 solution (fuel oxidizer of initiation reaction), by No. 1 solution preparing and No. 2 solution in mass ratio 1:1 be injected in 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(in Shanghai, Bing Qi Chemical Industry Science Co., Ltd buys), 1.0～2.0% antiknock dope vulkacit H C
6h
12n
4(in Beijing, westernization instrument Science and Technology Ltd. buys), 15～19% water H
2o forms.
The preparation method of No. 1 solution:
1.1 quality and 100% of pressing solution are calculated, and first, to the ammonium nitrate that adds 50～53% in container, pour subsequently 15～19% water into, stir 10～20 minutes;
1.2 add 12～14% Zoamix afterwards, stir 10～20 minutes;
1.3 add 13～19% nitrocellulose again to the solution obtaining, stir 10～20 minutes;
1.4 finally add 1.0～2.0% vulkacit H, fully stir 10～20 minutes, have 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(in Shanghai, Zi Yi chemical reagent work buys) and 15～21% zellon C
2cl
4(in Shanghai, Zi Yi chemical reagent work buys) forms.
The preparation method of No. 2 solution:
2.1 quality and 100% of pressing solution are calculated, and first, to adding 34.5～37.1% urea and 25～34% Sodium Nitrite in container, stir 10～20 minutes;
2.2 then to the zellon of toppling over 15～21% in container, stirs 10～20 minutes;
2.3 again to the sodium borohydride that adds 10～12% in container;
In 2.3 the most backward containers, add 5～7% sodium hydride, stir 10～20 minutes, this has just made solution No. 2.
After two portions component injects ore bed respectively, start to occur to discharge the reaction of the gentle body of hot gas, that first occur is NaH and NaBH
4reaction 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 burning initiator, after contact water, react.Discharge immediately the hydrogen in a large number with 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 fuel oxidizer reaction discharges is all penetrated in the middle of the crack of ore bed, does not stay shaft bottom.Such heat treating method is more effective.
The component that produces gas starts 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 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 fuel oxidizer mixture temperature rise and dehydration, and decomposition has occurred 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
Also there is collodion cotton C
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. generated reaction
2enter into shaft bottom, be dissolved in 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 particulate, and condensation gas is emitted.Continuous intensification along with reaction, have increasing gas and heat and constantly enter into rock stratum, make pressure sharply increase, on the basis that expands primary fracture, produce more new crack, thereby solved in recovery process because near-well-bore permeability reduces the production declining problem causing.
Accompanying drawing explanation
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: No. 1, Crude Oil gas field gas-condensate well thermochemistry stimulation work.
The geologic condition of No. 1 gas-condensate well and correlation parameter: husky three times sub-sections; 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 stimulation work
3; By above data, can show that reaction zone volume is 8.22m
3.Prepare 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, by No. 1 solution, No. 2 solution is injected in well by oil pipe successively.By checking that record of production finds, No. 1 oil/gas well stimulation phenomenon is obvious, before stimulation work, and daily gas 460m
3, daily gas 6987.2m after stimulation work
3, on May 8th, 2012, totally increase gas 932000m
3.
Embodiment 2: No. 2, Crude Oil gas field gas-condensate well thermochemistry stimulation work.
The geologic condition of No. 2 gas-condensate wells and correlation parameter: husky three times sub-sections; 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 stimulation work
3; By above data, can show that reaction zone volume is 9.12m
3.Prepare 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, by No. 1 solution, No. 2 solution is injected in well by oil pipe successively.
By checking that record of production finds, No. 1 oil/gas well stimulation phenomenon is obvious, before stimulation work, and daily gas 153m
3, daily gas 1408m after stimulation work
3, on May 8th, 2012, totally increase gas 150872m
3.Embodiment 3: No. 3, Crude Oil gas field gas-condensate well thermochemistry stimulation work.
The geologic condition of No. 3 oil wells and correlation parameter: husky three times sub-sections; 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 stimulation work
3; By above data, can show that reaction zone volume is 5.73m
3.Prepare 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, by No. 1 solution, No. 2 solution is injected in well by oil pipe successively.
By checking that record of production finds, No. 1 oil/gas well stimulation phenomenon is obvious, before stimulation work, and daily gas 95m
3, daily gas 1174.3m after stimulation work
3, on May 8th, 2012, totally increase gas 125064m
3.
Claims (2)
1. a thermochemistry volume increase solution component that is applied to hyposmosis condensate well, is characterized in that: No. 1 solution and No. 2 solution compositions that by mass ratio, are 1:1, by quality and 100% calculating, No. 1 solution is by 50～53% ammonium nitrate NH
4n О
3, 12～14% ADN NH
4n (NO
2), 13～19% nitrocellulose С
24Н
29О
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 NaN О
2, 5～7% sodium hydride NaH, 10～12% sodium borohydride NaBH
4with 15～21% zellon С
2cl
4form; And while using, be that No. 1 solution and No. 2 solution that prepare are injected in well successively.
2. a kind of thermochemistry volume increase solution component that is applied to hyposmosis condensate well as claimed in claim 1, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210479933.4A CN102936492B (en) | 2012-11-22 | 2012-11-22 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210479933.4A CN102936492B (en) | 2012-11-22 | 2012-11-22 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102936492A CN102936492A (en) | 2013-02-20 |
| CN102936492B true CN102936492B (en) | 2014-07-30 |
Family
ID=47695416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210479933.4A Active CN102936492B (en) | 2012-11-22 | 2012-11-22 | Thermochemical yield increase solution composition applicable to low-permeability condensate well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102936492B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| RU2696714C1 (en) * | 2018-06-14 | 2019-08-05 | Акционерное общество "Сибнефтемаш" | Method for thermo-chemical treatment of oil reservoir |
| 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 |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102936492A (en) | 2013-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103333670B (en) | A kind of for self generating gas system and using method thereof in the layer of plug removal in oil and water well energization | |
| CN102942913B (en) | Hydrogenation heat gas chemical yield increasing solution component applied to shallow well | |
| CN102942914B (en) | Hydrogenation heat gas chemical yield increasing solution component for low-permeability carbonate reservoir oil well | |
| CN103061730A (en) | Method for coal bed methane mining by multi-element thermal fluid foam displacement | |
| CN103122759B (en) | A kind of coal bed gas well multielement hot fluid enhanced recovery method | |
| CN101539012A (en) | Stratum catalytic oxidation thick oil thermal recovery method | |
| CN102352233B (en) | Low-harm micro-molecular guar gum fracturing fluid | |
| CN103216219A (en) | Method for extracting natural gas hydrate through CO2/N2 underground replacement | |
| CN102187056A (en) | Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir | |
| CN103806885B (en) | Stratum chemical heat production deep blockage removing method of injection and production system | |
| CN102936492B (en) | Thermochemical yield increase solution composition applicable to low-permeability condensate well | |
| CN102242626A (en) | Steam flooding exploitation method for heavy oil reservoir | |
| CN105507859B (en) | A method of excitation shale adsorbed gas desorption | |
| CN103410489A (en) | Modification and viscosity reduction method for in-situ combustion heavy oil recovery | |
| CN102162352A (en) | Novel method for exploiting coal-bed gas | |
| CN102942911B (en) | Hydrogenation hot gas chemical yield increasing solution component applied to low-yield low-permeability oil well | |
| Shen et al. | Numerical investigation of fracturing fluid invasion into hydrate reservoirs during hydraulic-fracturing stimulation | |
| CN102942912B (en) | Hydrogenation heat gas chemical yield increasing solution component for low-permeability sandstone reservoir oil well | |
| CN102936493B (en) | Hydrogenation thermochemical yield increase solution composition for low-permeability gas well | |
| CN102925129B (en) | Hydrogenating hot gas chemical solution component and application thereof to viscous oil recovery | |
| CN102977876A (en) | Guar gum fracturing fluid with ultralow concentration and low-temperature coal-bed gas well fracturing method | |
| CN102838978A (en) | Preparation method and application of autogeneration gas foam composite oil-displacing agent under shaft | |
| CN105156082A (en) | Method and combined solution for increasing productivity of low-porosity, low-permeability and low-pressure reservoir oil well | |
| CN105672963B (en) | A kind of well production increment method that hydrogen component is released using hydration reaction | |
| CN103059830A (en) | Penetration agent for oil well, and preparation method as well as application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
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 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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. |