CN103194192A - Alkali-resistant polymer particle profile control agent - Google Patents
Alkali-resistant polymer particle profile control agent Download PDFInfo
- Publication number
- CN103194192A CN103194192A CN2013100278224A CN201310027822A CN103194192A CN 103194192 A CN103194192 A CN 103194192A CN 2013100278224 A CN2013100278224 A CN 2013100278224A CN 201310027822 A CN201310027822 A CN 201310027822A CN 103194192 A CN103194192 A CN 103194192A
- Authority
- CN
- China
- Prior art keywords
- profile control
- control agent
- alkali
- particle profile
- granular profile
- 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.)
- Pending
Links
Abstract
The invention discloses an alkali-resistant delayed-expansion particle profile control agent. A preparation method for the particle profile control agent comprises the following steps: adding an initiator to initiate homopolymerization of an aqueous acrylamide solution; then introducing a modification group to a main chain of a reactant; and finally, carrying out drying, crushing and screening so as to prepare the particle profile control agent with a particle size of 20 to 70 meshes. An application method for the particle profile control agent is as follows: alkali lye, a surfactant and an anionic polyacrylamide solution of different proportions are used as a carrier fluid, the particle profile control agent slowly swells in the carrier fluid, and then the particle profile control agent is injected into a stratum needing profile control and water plugging.
Description
Technical field:
The present invention relates to oil exploitation technology, the technology of the raising recovery ratio of using on a kind of field produces, particularly a kind of alkaline-resisting granular profile control agent and using method thereof.
Technical background:
The wilkinite volume expansion type granular profile control agent obtains practical application in field produces, but this kind profile control and water plugging exists expand under the alkaline condition back intensity and toughness variation in actual applications, after being injected into the stratum, owing to sheared, particle after the expansion is broken easily, has influenced the effect of profile control and water plugging.
Summary of the invention:
The objective of the invention is to overcome existing technological deficiency, the particle profile-controlling and plugging agent and the application method thereof that provide a kind of alkaline-resisting time-delay to expand.
Purpose of the present invention realizes according to following proposal:
A kind of alkaline-resisting time-delay expansion profile-controlling and plugging agent, its preparation method is: by adding initiator, acrylamide triggered aqueous solution homopolymerization is introduced modified group, dries at last, pulverizes, is sieved at the reactant main chain then, and preparing particle diameter is 20-70 purpose granular profile control agent.
The weight proportion of above-mentioned reactant is: acrylamide 5-20%, and modified group 5-20%, alkali 1-5%, initiator 0.01-0.1%, all the other are deionized water.
Above-mentioned modified group is formaldehyde, dimethylamine or their mixture.
Above-mentioned alkali is sodium hydroxide, yellow soda ash or their mixture.
Above-mentioned initiator is ammonium persulphate, organic diazo salt, nitrogen three acrylic amine or their mixture.
The application method of described granular profile control agent uses alkali lye, tensio-active agent and the anionic polyacrylamide solution of different proportionings as transport fluid, and it can slowly expand in transport fluid, is injected in the stratum that needs profile control and water plugging.
The alkaline-resisting time-delay expansion of the present invention profile-controlling and plugging agent can be produced varigrained profile-controlling and plugging agent according to geologic condition and the implementing process condition of different oil wells, solves under alkaline condition the problem that intensity, toughness die down after the expansion that the swollen granular profile control agent of common aspect is deposited.This profile-controlling and plugging agent can be adjusted at the add-on in its transport fluid in use according to different geologic process conditions, guarantees the efficient of profile control and water plugging, thereby improves recovery ratio, is suitable for promoting the use of in the profile control and water plugging of oil field later stage exploitation.
Embodiment:
Example 1: 2 gram sodium hydroxide are joined in the 60 gram deionized waters stirring and dissolving.Add acrylamide along with stirring then, treat that acrylamide dissolves good back and adds ammonium persulphate 0.1 gram, carry out polyreaction by the irradiation of halogen light modulation, 75 ℃-79 ℃ of irradiation temperature, the reaction times is 3-4 hour.Temperature of reaction is down to 50 ℃ then, adds formaldehyde and carry out modified-reaction, 2 hours reaction times.With the resultant of reaction granulation, granularity is the 20-70 order.
Get in the NaOH aqueous solution that 2 gram examples 1 reactants join 200 milliliter 1.2%, stir and allow it be evenly distributed on the bottom, reactant can slowly begin to expand, and reaches maximum value after 5 days, surveys its expansion multiple and toughness.1.2% the NaOH aqueous solution is changed to clear water, repeats above experiment, survey its expansion multiple and toughness, basic identical.
Example 2: 2 gram sodium hydroxide are joined in the 60 gram deionized waters stirring and dissolving.Add acrylamide along with stirring then, treat that acrylamide dissolves good back and adds organic diazo salt 0.1 gram, carry out polyreaction by the irradiation of halogen light modulation, 75 ℃-79 ℃ of irradiation temperature, the reaction times is 3-4 hour.Temperature of reaction is down to 50 ℃ then, adds formaldehyde and carry out modified-reaction, 2 hours reaction times.With the resultant of reaction granulation, granularity is the 20-70 order.
Example 3: 2 gram sodium hydroxide are joined in the 60 gram deionized waters stirring and dissolving.Add acrylamide along with stirring then, treat that acrylamide dissolves good back and adds ammonium persulphate 0.1 gram, carry out polyreaction by the irradiation of halogen light modulation, 75 ℃-79 ℃ of irradiation temperature, the reaction times is 3-4 hour.Temperature of reaction is down to 50 ℃ then, adds dimethylamine and carry out modified-reaction, 2 hours reaction times.With the resultant of reaction granulation, granularity is the 20-70 order.
Example 4: get in the NaOH aqueous solution that 2 gram examples 2, example 3 reactants join 200 milliliter 1.2%, stir and allow it be evenly distributed on the bottom, reactant can slowly begin to expand, and reaches maximum value after 5 days, surveys its expansion multiple and toughness.1.2% the NaOH aqueous solution is changed to clear water, repeats above experiment, survey its expansion multiple and toughness, basic identical.
Claims (4)
1. granular profile control agent that alkaline-resisting time-delay is expanded, its preparation method is: by adding initiator, acrylamide triggered aqueous solution homopolymerization is introduced modified group, dries at last, pulverizes, is sieved at the reactant main chain then, and preparing particle diameter is 20-70 purpose granular profile control agent.
2. granular profile control agent as claimed in claim 1 is characterized in that the weight proportion of above-mentioned reactant is: acrylamide 5-20%, and alkali 1-5%, initiator 0.01-0.1%, all the other are deionized water.
3. granular profile control agent as claimed in claim 1 is characterized in that above-mentioned alkali is sodium hydroxide, yellow soda ash or their mixture.Granular profile control agent as claimed in claim 1 is characterized in that above-mentioned initiator is ammonium persulphate, organic diazo salt, nitrogen three acrylic amine or their mixture.
4. the application method of granular profile control agent as claimed in claim 1 uses alkali lye, tensio-active agent and the anionic polyacrylamide solution of different proportionings as transport fluid, and it can slowly expand in transport fluid, is injected in the stratum that needs profile control and water plugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100278224A CN103194192A (en) | 2013-01-25 | 2013-01-25 | Alkali-resistant polymer particle profile control agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100278224A CN103194192A (en) | 2013-01-25 | 2013-01-25 | Alkali-resistant polymer particle profile control agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103194192A true CN103194192A (en) | 2013-07-10 |
Family
ID=48717015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100278224A Pending CN103194192A (en) | 2013-01-25 | 2013-01-25 | Alkali-resistant polymer particle profile control agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103194192A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927005A (en) * | 2015-06-26 | 2015-09-23 | 东营方立化工有限公司 | Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof |
| CN106639977A (en) * | 2016-12-12 | 2017-05-10 | 张会利 | Selective water plugging method of oil well in oil extraction process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417814A (en) * | 2011-11-16 | 2012-04-18 | 北京国海能源技术研究院 | Seawater-based fracturing fluid and preparation method thereof |
-
2013
- 2013-01-25 CN CN2013100278224A patent/CN103194192A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417814A (en) * | 2011-11-16 | 2012-04-18 | 北京国海能源技术研究院 | Seawater-based fracturing fluid and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104927005A (en) * | 2015-06-26 | 2015-09-23 | 东营方立化工有限公司 | Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof |
| CN106639977A (en) * | 2016-12-12 | 2017-05-10 | 张会利 | Selective water plugging method of oil well in oil extraction process |
| CN106639977B (en) * | 2016-12-12 | 2019-04-02 | 张会利 | A kind of selective water plugging method of oil well in oil recovery process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103951785B (en) | A kind of fracturing liquid flow improver and its preparation method and application | |
| CN103590803B (en) | Solid acid fracturing method | |
| CN101412905B (en) | Preparation of composite fracturing fluid for hydraulic fracture | |
| CN104087275B (en) | A kind of high-temperature-resistant high-salt tiny gels granular profile control agent and its preparation method and application | |
| CN101519585B (en) | Shearing cross-linking sensitive plugging agent and preparation method thereof | |
| CN103131404A (en) | Amphoteric ionic polymer water base fracturing fluid thickening agent and preparation method thereof | |
| CN104194765A (en) | Continuously blended liquefied polymer thickener for fracturing construction | |
| CN103497753B (en) | One is applicable to the of the fracturing fluid linking agent of concentrated water | |
| CN103937484B (en) | Shale gas well slickwater fracturing fluid system high-efficiency emulsion quick water-soluble drag reducer | |
| CN104099074B (en) | Volume fracturing reconstruction crack plugging agent and water plugging construction method | |
| CN102617800B (en) | Delay intumescent profile control blocking agent and application method thereof | |
| CN103113875A (en) | Water-based fracturing fluid thickener and method for preparing same | |
| CN104388061A (en) | High-temperature-resistant salt-resistant polymer filtrate reducer used in water-based drilling fluid and preparation method thereof | |
| CN103194192A (en) | Alkali-resistant polymer particle profile control agent | |
| CN103740340A (en) | Expansion and solidification type plugging agent | |
| AU2014389579A1 (en) | Propping agent and method for placing same in a hydraulic fracture | |
| CN108424762B (en) | Self-suspending proppant for hydraulic fracturing and preparation method thereof | |
| CN102994055B (en) | Method for preparing filtrate reducer hydrolyzed polyacrylonitrile for drilling fluid | |
| CN105062446A (en) | Granular profile control water-plugging agent | |
| CN103087236A (en) | Method for preparing high-molecular-weight anionic polyacrylamide through ultralow-temperature initiation | |
| CN105238372A (en) | High-molecular gel plugging agent and preparation method thereof | |
| CN103911138A (en) | Density adjustable type composite weighted fracturing fluid | |
| CN101613219A (en) | A kind of method of utilizing mud and cow dung to make haydite | |
| CN103710016A (en) | Dry-powder structural fluid drag reducer and preparation method thereof | |
| CN103626573A (en) | Water-retention coated nitrogen phosphorus potassium compound fertilizer and preparation method 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 | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130710 |