CN108034417A - A kind of new additive agent for improving polyacrylamide heat endurance - Google Patents
A kind of new additive agent for improving polyacrylamide heat endurance Download PDFInfo
- Publication number
- CN108034417A CN108034417A CN201711288541.9A CN201711288541A CN108034417A CN 108034417 A CN108034417 A CN 108034417A CN 201711288541 A CN201711288541 A CN 201711288541A CN 108034417 A CN108034417 A CN 108034417A
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- polyacrylamide
- polymer
- additive agent
- new additive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
It is by technical grade CH the invention discloses a kind of new additive agent for improving polyacrylamide heat endurance4N2S and Vc are according to 4:1 weight is formulated.The new additive agent that the present invention prepares is in high-temperature oil reservoir in use, the weight of the additive and polyacrylamide is 1:19.It is convenient, simple that the present invention prepares, itself and polyacrylamide are proportioned use, the oxidative degradation of polymer under the high temperature conditions can effectively be suppressed, reaching improves polymer effect steady in a long-term, free radical cracking can effectively be suppressed, prevent free radical from attacking HPAM molecular backbones, improve the thermo-oxidative stability of polymer solution；Ensure polymer solution under the high temperature conditions, the long-term thermo-oxidative stability viscosity retention ratios of aging 180d are more than 90%, achieve the purpose that to increase polymer solution viscosity or slow down viscosity decrease speed；Polymer volume can be saved under the same conditions, improve oil displacement efficiency and economic benefit.
Description
Technical field
The present invention relates to oil extraction in oil field displacement of reservoir oil agent addition agent, and polyacrylamide heat endurance is improved more particularly, to one kind
New additive agent.
Background technology
Oil field at home exploitation at present face it is mostly be three high " High water cut, high temperature, high salinity " oil reservoirs.Will be in reservoir temperature
Block more than 80 DEG C carries out polymer displacement of reservoir oil tech, it is necessary to solves the problems, such as polyacrylamide temperature-resistant anti-salt.Displacement of reservoir oil polypropylene
Acid amides is a kind of soluble polymer product, and the factors of instability mostly come from three aspects under the high temperature conditions for it：Heat point
Solution, pyrohydrolysis and oxidative degradation, the influence of generation is including caused by side base denaturation, removing, high polymer main chain fracture etc.
Polymer solution viscosity declines problem.Under hot conditions, obvious thermal-oxidative degradation effect, thermal-oxidative degradation can occur for polyacrylamide
Mechanism is radical reaction, the O in polymer solution2O, chemical bond rupture are cracked into, O can make HPAM molecular breakdowns, phase
Molecular mass is reduced, HPAM solution viscosities is declined to a great extent in the short period of time, oil displacement efficiency is deteriorated.Due to polyacrylamide
Amine thermal stability problems directly affect its application performance hidden in high temperature oil polyacrylamide heat endurance, in order to meet oil field height
The application of warm reservoir polymer technology of reservoir sweep, developing that a kind of additive that can improve polyacrylamide heat endurance has very much must
Will.
The content of the invention
It is an object of the invention in view of the above-mentioned drawbacks of the prior art, polyacrylamide heat can be improved by providing one kind
The new additive agent of stability.
To achieve the above object, the present invention can take following technical proposals：
The new additive agent of the present invention for improving polyacrylamide heat endurance, is by technical grade CH4N2S and Vc are according to 4:
1 weight is formulated.
The new additive agent that the present invention prepares is in high-temperature oil reservoir in use, the weight of the additive and polyacrylamide
Part proportioning is 1:19.
The advantage of the invention is that preparing conveniently, simply, it is used cooperatively by a certain percentage with polyacrylamide, can
Effectively suppress the oxidative degradation of polymer under the high temperature conditions, reaching improves polymer effect steady in a long-term, Ji Nengyou
Effect suppresses free radical cracking, prevents free radical from attacking HPAM molecular backbones, improves the thermo-oxidative stability of polymer solution；Ensure poly-
Under the high temperature conditions, the long-term thermo-oxidative stability viscosity retention ratios of aging 180d are more than 90% to polymer solution, and it is molten to reach increase polymer
Fluid viscosity or the purpose for slowing down viscosity decrease speed；Polymer volume can be saved under the same conditions, improve oil displacement efficiency and warp
Ji benefit.Experiment proves that the additive and Polyacrylamides For Enhanced Oil Recoveries for preparing the present invention are according to 1:19 optimal proportion coordinates
Use, can be good at solving the technical barrier of polymer thermal-oxidative degradation under the high temperature conditions.
Embodiment
1st, the new additive agent of the present invention for improving polyacrylamide heat endurance, is by technical grade CH4N2S（Sulphur
Urea）And Vc（Vitamin C）According to 4:After 1 weight ratio precise, it is prepared by fully mixing.
2nd, in use, by the new additive agent of above-mentioned preparation and polyacrylamide according to parts by weight 1 in high-temperature oil reservoir:19
Ratio mixture use, effect is best.
3rd, long-term thermo-oxidative stability effect assessment under different temperatures
Table 1
As shown in table 1, investigate in different temperatures（80℃、90℃、100℃）Under the conditions of, in polyacrylamide ZJ-1 add or
It is added without in the case of two kinds of the new additive agent that the present invention prepares, aging 180d Viscosity of Polyacrylamide Solution situations of change, table 1
The result shows that under the conditions of 80 DEG C, 90 DEG C, 100 DEG C, be not added with the new additive agent of the present invention, polymer solution viscosity decline compared with
It hurry up, aging 180d viscosity retention ratios are respectively 74%, 56% and 18%；And after adding new additive agent, preferably inhibit polymer
Thermal-oxidative degradation, aging 180d viscosity retention ratios are respectively 104%, 99% and 92%.It is demonstrated experimentally that new adding of preparing of the present invention
Add agent that there is the effect for improving polyacrylamide thermo-oxidative stability well.
4th, under the conditions of 95 DEG C different polyacrylamides long-term thermo-oxidative stability effect assessment
Table 2
As shown in table 2,8 kinds of different polyacrylamide amine products are investigated and are adding or be added without the new additive agent two of the invention prepared
In the case of kind, aging 180d polymer solution viscosity situations of change.Table 2 test result indicates that, in 8 kinds of polymer, be added without new
Type additive, aging 180d viscosity retention ratios minimum only 15%, highest 54%, polymer solution viscosity decline obvious；And add new
After type additive, aging 180d polymer ZJ-1 viscosity retention ratios are up to 97%, remaining 7 kinds of polymer aging 180d viscosity is protected
Rate is stayed to be all higher than 90%.Experiment proves the new additive agent of the invention prepared under the high temperature conditions, and it is molten can to reach increase polymer
Fluid viscosity or the purpose for slowing down viscosity decrease speed.
5th, it is steady to amplify long term thermal oxygen by lab scale after optimal proportion mixture and step by step for polyacrylamide amine product and new additive agent
Qualitative evaluation
Table 3
The 2 kinds of different type polyacrylamide amine products and this hair of the positive Canon source Environmental Protection Co.Ltd. production in Henan are respectively adopted
The new additive agent of bright preparation is according to 1:19 optimal proportion carries out lab scale and amplifies mixture experiment step by step.Minimum mixture experiment is matched somebody with somebody
Side（0.95g ZJ-1+0.05g additives）, maximum mixture experimental formula（950 kg ZJ-1+50kg additives）, so as to contrast
Pilot plant test and the repdocutbility for amplifying mixture experimental result step by step.Table 3 test result indicates that, add additive after, 95 DEG C of conditions
Under, the long-term thermo-oxidative stability viscosity retention ratios of aging 180d are all higher than 95%, and lab scale and step by step amplification test repeatability are preferably.Say
The new additive agent that the bright present invention prepares can solve the skill of polyacrylamide maintaining a long-term stability property under the conditions of high-temperature oil reservoir
Art problem, can be applicable.
Claims (2)
- A kind of 1. new additive agent for improving polyacrylamide heat endurance, it is characterised in that：It is by technical grade CH4N2S and Vc are pressed According to 4:1 weight is formulated.
- 2. the application method for the new additive agent that claim 1 is prepared, it is characterised in that：It is in high-temperature oil reservoir in use, described The weight of additive and polyacrylamide is 1:19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711288541.9A CN108034417A (en) | 2017-12-07 | 2017-12-07 | A kind of new additive agent for improving polyacrylamide heat endurance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711288541.9A CN108034417A (en) | 2017-12-07 | 2017-12-07 | A kind of new additive agent for improving polyacrylamide heat endurance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108034417A true CN108034417A (en) | 2018-05-15 |
Family
ID=62095943
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711288541.9A Withdrawn CN108034417A (en) | 2017-12-07 | 2017-12-07 | A kind of new additive agent for improving polyacrylamide heat endurance |
Country Status (1)
| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4247405A (en) * | 1978-06-30 | 1981-01-27 | Phillips Petroleum Company | Viscosity-stabilized aqueous solutions |
| CN102428157A (en) * | 2009-05-18 | 2012-04-25 | S.P.C.M.股份公司 | Novel formulations of water-soluble polymers and stabilizing additives for injecting a single compound useable in injection fluids for chemical enhanced oil recovery |
| CN102952532A (en) * | 2011-08-19 | 2013-03-06 | 中国石油化工股份有限公司 | Method for improving viscosity stability of oil field polymer flooding |
| CN104448128A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Polymer mobility control agent suitable for high-temperature and high-salinity harsh reservoir and preparation method of polymer mobility control agent |
-
2017
- 2017-12-07 CN CN201711288541.9A patent/CN108034417A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4247405A (en) * | 1978-06-30 | 1981-01-27 | Phillips Petroleum Company | Viscosity-stabilized aqueous solutions |
| CN102428157A (en) * | 2009-05-18 | 2012-04-25 | S.P.C.M.股份公司 | Novel formulations of water-soluble polymers and stabilizing additives for injecting a single compound useable in injection fluids for chemical enhanced oil recovery |
| CN102952532A (en) * | 2011-08-19 | 2013-03-06 | 中国石油化工股份有限公司 | Method for improving viscosity stability of oil field polymer flooding |
| CN104448128A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Polymer mobility control agent suitable for high-temperature and high-salinity harsh reservoir and preparation method of polymer mobility control agent |
Non-Patent Citations (1)
| Title |
|---|
| 吕茂森: "高温高盐条件下AMPS三元共聚物热稳定性研究", 《钻采工艺》 * |
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Application publication date: 20180515 |
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