CN102660248A - Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control - Google Patents
Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control Download PDFInfo
- Publication number
- CN102660248A CN102660248A CN2012101114053A CN201210111405A CN102660248A CN 102660248 A CN102660248 A CN 102660248A CN 2012101114053 A CN2012101114053 A CN 2012101114053A CN 201210111405 A CN201210111405 A CN 201210111405A CN 102660248 A CN102660248 A CN 102660248A
- Authority
- CN
- China
- Prior art keywords
- water
- volpo
- solution
- oil reservoir
- compound
- 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.)
- Granted
Links
Abstract
The invention relates to a method for preparing a pH-sensitive swellable compound for oil reservoir water shutoff and profile control. The method can simply prepare a water flooding swellable compound, enhance the sensitivity to environmental pH, and improve the water flooding effect. The method is characterized by adding water in a flask, stirring for 10 min, then adding polyoxy ethenol- polyoxy propenol-polyoxy ethanol, stirring at 40 DEG C for 0.5-1h, and finally adding a 1% polyvinyl alcohol solution in the above solution and stirring at 40 DEG C for 12-24 h to prepare a milky micellar solution; adding tetramethyl siloxane, 30% acetum, and water, reacting at 80 DEG C for 24-36 h, and finally washing the reaction product with ethanol and water, then conducting pumping filtration, and drying the product at 50 DEG C for 12-20 h to obtain the white granular pH-sensitive swellable compound. The method is simple and convenient and has mild conditions, and the prepared compound has good volume expansion effect at high temperature, high pressure, and high salinity. The invention is used for oil reservoir water flooding exploitation.
Description
Technical field
The present invention relates to a kind of preparation method who is used for the expanded compound of the responsive gonosome of pH of petroleum industry oil and water well oil reservoir water plugging and profile controlling.
Background technology
Water plugging and profiling technology is the effective means that waterflooding development effect, realization oil reservoir stable yields are improved in the oil field always.China's water plugging and profiling technology has research and the applicating history of decades, and the different development phases is being brought into play important effect in the oil field.Water and oil control technical difficulty such as the oil field gets into high moisture or ultra-high water-containing after the productive life after getting into for 21st century, and the oilfield water flooding problem becomes increasingly complex, water plugging and profile controlling and require are increasingly highly promoting constantly bringing forth new ideas and developing of water plugging and profile controlling and correlation technique.
The volume expansion grain profile control is a kind of novel deep profile controlling technology, mainly is to strong, high moisture, the oil field deep profile control that macropore is grown of nonuniformity, improves the water drive development effectiveness and the innovative technology researched and developed.Volume expansion grain is met the constant and swollen deliquescing of water-absorbing body (but not dissolving) of oil volume; Can deform under external force and migrate to earth formation deep; In high permeability formation or macropore, produce resistance to flow; Follow-up injection moisture flow is turned to, effectively change pressure field and streamiline field that the earth formation deep long-period water drive forms set, reach and realize deep profile controlling, improve swept volume, improve the purpose of water drive development effectiveness.But practical application is often in high temperature, high pressure, high salinity " three height " even highly acid severe environment.Be badly in need of research a kind of anti-" three height " and the water plugging effect good body expanded compound responsive to pH.
Summary of the invention
The objective of the invention is: improve water drive requirement, the expanded compound of body anti-" three height " and strengthen susceptibility application environment pH in order to adapt to highly aqueous Tibetan; Improve the preparation of the expanded compound of body, the spy provides a kind of preparation method of the expanded compound of the responsive gonosome of pH of oil reservoir water plugging and profile controlling.
Principle of the present invention is to add organic additive after Volpo S 10-polyoxypropylene alcohol-Volpo S 10 triblock copolymer is formed micella; Assemble in the elementary elementary cell of molecular level through the interface interaction between organism and the inorganics, obtain can be used for the oil reservoir water plugging and profile controlling with the expanded compound of body.This compound has good water plugging effect and shows good pH sensitive property under high salinity, high temperature, high pressure.
In order to achieve the above object; The technical scheme that the present invention adopts is: the preparation method of the expanded compound of the responsive gonosome of a kind of pH of oil reservoir water plugging and profile controlling; Synthesize by two steps and to realize; Its technical characterictic is: the first step, and the preparation of Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution adds deionized water 30 ~ 50 mL earlier in there-necked flask and 40-60 mL concentration is that 2mol/L sulfuric acid at room temperature stirs 10 min; Again Volpo S 10-polyoxypropylene alcohol-Volpo S 10 2.0g is added in the above-mentioned solution; At bath temperature is 40 ℃ of following heated and stirred 0.5-1 h, and the mass percentage concentration that adds the new preparation of 8-10 mL again is 1% polyvinyl alcohol water solution, continues to make oyster white micellar solution at 40 ℃ of following heated and stirred 12-24 h; In second step, the preparation of the expanded compound of body is reflected in the container of sealing and carries out; 4.2g tetramethyl-silica alkane is added in the Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution that obtains with aforesaid method; Add mass percentage concentration again and be 30% acetic acid 2.1g, deionized water 17g, their weight ratio does; Tetramethyl-silica alkane: Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution: 30% acetic acid: water=100:90-110:1-50:200-400; Behind 80 ℃ of following reacting by heating 24-36 h, product earlier with absolute ethanol washing 3～5 times, is used suction filtration behind the deionized water wash 3 ~ 5 times again; At 50 ℃ of following dry 12-20 h, gained white solid particle is the expanded compound of the responsive gonosome of pH again.
Make the expanded compound of assembling in the elementary elementary cell of molecular level of body.
The described Volpo S 10 of this law-polyoxypropylene alcohol-Volpo S 10 is commercially available, and molecular formula does
HO-(CH
2-CH
2-O)
x-(CH
2-CH
2-CH
2-O)
y-(CH
2-CH
2-O)
xA kind of (x=20 in the formula ~ 30, y=50 ~ 70) of-H,
The invention has the beneficial effects as follows: the pH sensitive compound of the oil reservoir water plugging and profile controlling that (1) prepares is owing to be that preparation makes its acid-basicity to environment for use that good susceptibility arranged under strongly-acid; (2) because the swollen deliquescing of particle water-absorbing body for preparing; Show " amoeba " characteristic when in porous medium, migrating under the external force effect; Particulate deformation migration just enlarges the profile control reach like this; Reach that one of employed raw material Volpo S 10-polyoxypropylene alcohol-Volpo S 10 itself is tensio-active agent in deep profile controlling fluid diversion purpose (3) this law; Therefore the compound and other tensio-active agents that prepare have good complex role, can obtain being applicable to the needed prescription of oil and water well oil reservoir profile control and water plugging demands of different.
Embodiment
Below in conjunction with specific embodiment preparation method of the present invention and performance of products are described further.
Embodiment (1) prepares a kind of expanded compound of the responsive gonosome of pH of oil reservoir water plugging and profile controlling according to following step:
(1) preparation of Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution: in the there-necked flask of 200 ml, add and stir 10 min under 50ml deionized water and the 60ml 2mol/L sulfuric acid room temperature; 2.0g Volpo S 10-polyoxypropylene alcohol-Volpo S 10 is joined in the above-mentioned solution at 40 ℃ of following stirring 0.5 h that continue; Be that 1% polyvinyl alcohol water solution dropwise joins in the there-necked flask and then continues down to stir 24 h at 40 ℃ with the mass percentage concentration of the new preparation of 8 ml again, resulting milky white solution is Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution;
(2) preparation of the expanded compound of the responsive gonosome of a kind of pH of oil reservoir water plugging and profile controlling: 30% acetic acid of the tetramethyl-silica alkane of 4.2 g and 2.1 g and 17 g deionized waters are added transfer in the reaction vessel that tetrafluoroethylene is an inner bag after stirring under the room temperature in the above-mentioned Volpo S 10 for preparing-polyoxypropylene alcohol-Volpo S 10 micellar solution earlier; Be warming up to after reaction vessel added a cover behind 80 ℃ of reacting by heating 24 h product earlier with absolute ethanol washing 3 times; Use suction filtration behind the deionized water wash 3 times again; At 50 ℃ of following dry 12 h, gained white solid particle is the expanded compound of the responsive gonosome of pH again.
The test of plugging effect under embodiment (2) the different ions content
Annotate: p
0
Be respectively the initial injection pressure and actual measurement injection pressure, mPa of rock core water drive before the shutoff with p; k
0
Be respectively the initial rate of permeation and actual measurement rate of permeation, 10 of rock core water drive before the shutoff with k
-3
Um
2
The height of the salinity particularly height of calcium ions and magnesium ions mass concentration is directly connected to final profile control effect.The test result of profile control physical simulation experiment shows the increase with the calcium ion mass concentration; Injection pressure rising multiple is increase trend, and the permeability reduction multiple is and reduces trend, and plugging effect improves; And under different injection volume of voids multiple, the increase and decrease amplitude has certain difference.
The different pH values of embodiment (3) are the test of plugging effect down
Annotate: p
0
Be respectively the initial injection pressure and actual measurement injection pressure, mPa of rock core water drive before the shutoff with p; k
0
Be respectively the initial rate of permeation and actual measurement rate of permeation, 10 of rock core water drive before the shutoff with k
-3
Um
2
At calcium ion concn is that the test result of the profile control physical simulation experiment of 10000 mg/L shows the increase gradually along with the pH value; Injection pressure rising multiple is to show increases earlier the trend that afterwards reduces; The permeability reduction multiple is to show and reduces the trend that afterwards increases earlier; Plugging effect also is to improve earlier afterwards to degenerate, and under different injection volume of voids multiple, the increase and decrease amplitude has certain difference.
Claims (1)
1. the preparation method of the expanded compound of the responsive gonosome of the pH of an oil reservoir water plugging and profile controlling; It is characterized in that: this preparation method is made up of two-step synthetic method; The first step adds the deionized water of 30-50mL earlier in there-necked flask; Adding molarity again is sulfuric acid 40 ~ 60mL of 2mol/L, at room temperature stirs 10min; 2.0g Volpo S 10-polyoxypropylene alcohol-Volpo S 10 being joined in the above-mentioned solution, is 40 ℃ of following heated and stirred 0.5 ~ 1h at bath temperature again; The mass percentage concentration that to newly prepare at last is that polyvinyl alcohol water solution 8 ~ 10mL of 1% joins in the there-necked flask; Be 40 ℃ at bath temperature and continue heated and stirred 12 ~ 24h down, making milky white solution is Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution; Second step added the micellar solution that aforesaid method makes in closed container; Add tetramethyl-silica alkane 4.2g again, mass percentage concentration is 30% acetum 2.1g, deionized water 17g; Their mass ratio; Tetramethyl-silica alkane: Volpo S 10-polyoxypropylene alcohol-Volpo S 10 micellar solution: 30% acetic acid: water=100:90-110:1-50:200-400, at room temperature stir, be 80 ℃ of reaction 24 ~ 36h down in temperature again; At last with reaction product with absolute ethanol washing 3 ~ 5 times, use suction filtration behind the deionized water wash 3 ~ 5 times again, at 50 ℃ of dry 12-20h down, gained white solid particle is the expanded compound of the responsive gonosome of pH again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101114053A CN102660248B (en) | 2012-04-17 | 2012-04-17 | Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101114053A CN102660248B (en) | 2012-04-17 | 2012-04-17 | Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102660248A true CN102660248A (en) | 2012-09-12 |
| CN102660248B CN102660248B (en) | 2013-11-20 |
Family
ID=46769835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101114053A Expired - Fee Related CN102660248B (en) | 2012-04-17 | 2012-04-17 | Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102660248B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966237A (en) * | 1989-07-20 | 1990-10-30 | The United States Of America As Represented By The Secretary Of The Interior | Method of effecting expanding chemical anchor/seals for rock cavities |
| CN101481605A (en) * | 2005-09-28 | 2009-07-15 | 江苏海特曼新材料有限公司 | Oil well cement crystal expansion agent and preparation thereof |
| CN102127410A (en) * | 2010-12-16 | 2011-07-20 | 李水伯 | Slow-swelling pre-crosslinked gel volume expansion grains and preparation method thereof |
| CN102181273A (en) * | 2011-03-18 | 2011-09-14 | 张建军 | Granular volume expansion profile control agent for oil recovery and preparation |
-
2012
- 2012-04-17 CN CN2012101114053A patent/CN102660248B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966237A (en) * | 1989-07-20 | 1990-10-30 | The United States Of America As Represented By The Secretary Of The Interior | Method of effecting expanding chemical anchor/seals for rock cavities |
| CN101481605A (en) * | 2005-09-28 | 2009-07-15 | 江苏海特曼新材料有限公司 | Oil well cement crystal expansion agent and preparation thereof |
| CN102127410A (en) * | 2010-12-16 | 2011-07-20 | 李水伯 | Slow-swelling pre-crosslinked gel volume expansion grains and preparation method thereof |
| CN102181273A (en) * | 2011-03-18 | 2011-09-14 | 张建军 | Granular volume expansion profile control agent for oil recovery and preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102660248B (en) | 2013-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11015109B2 (en) | Particulate profile control agent self-adaptive to size of formation pore throat and preparation method thereof | |
| CN101798503B (en) | Novel polymeric oil-displacing agent for improving recovery ratio and application thereof | |
| CN104087275B (en) | A kind of high-temperature-resistant high-salt tiny gels granular profile control agent and its preparation method and application | |
| CN103555305B (en) | Hyperbranched slow-swelling profile control particles and preparation method thereof | |
| CN105176505B (en) | A kind of cement paste for well cementation stabilizer and preparation method and application | |
| CN104371675B (en) | A kind of fluid loss additive for boring fluid | |
| CN103320112B (en) | A kind of anti-shearing dendritic polymers oil-displacing agent and synthetic method thereof | |
| CN106833602B (en) | A kind of ATRP functional modification proppant and preparation method thereof | |
| CN104449606A (en) | High temperature resistant well-cementing spacer fluid and preparation method thereof | |
| CN101302266A (en) | Water-soluble micro-crosslinked copolymer, preparation and use thereof | |
| CN109369848A (en) | A kind of functional form temperature-resistant anti-salt plugging agent and preparation method thereof | |
| CN106589257A (en) | Preparation method of lignin grafted and copolymerized polymer flocculation type profile modifying/water plugging agent | |
| CN105199690B (en) | A kind of oil-well cement high temperature resistant suspending agent | |
| CN104342094B (en) | Flyash plural gel fluid diverting agent and its preparation and application | |
| CN104371681A (en) | AA/AM/SSS underground cross-linked polymer gel plugging agent and preparation method thereof | |
| Yang et al. | Review of the application of environmentally responsive gels in drilling and oil recovery engineering: Synthetic materials, mechanism, and application prospect | |
| CN106522906A (en) | Application of welan gum for increasing recovery ratio in ultrahigh temperature oil reservoir oil displacement | |
| CN109679604A (en) | A kind of salt tolerant high-temperature resistant water gel and the preparation method and application thereof | |
| CN102660248B (en) | Method for preparing pH-sensitive swellable compound for oil reservoir water shutoff and profile control | |
| CN106634906A (en) | Gel with high temperature resistance | |
| CN103483500A (en) | High-temperature resistant and strong water-absorbing fluid loss additive and application thereof | |
| CN110655605B (en) | Preparation method of reverse temperature-sensitive gel oil displacement agent | |
| CN102634325B (en) | Water and leakage plugging material of retarded crosslinking gel wrapping high valence metal ions | |
| CN104926988A (en) | Preparation method for amphoteric ion copolymer for well drilling fluid | |
| CN103319661A (en) | Agarose-based dimethylpropiothetin acrylate grafted polymer and preparation method therefor |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150417 |
|
| EXPY | Termination of patent right or utility model |