CN101993686B - Viscosity protective agent for sewage-prepared polymer solution - Google Patents
Viscosity protective agent for sewage-prepared polymer solution Download PDFInfo
- Publication number
- CN101993686B CN101993686B CN 200910090466 CN200910090466A CN101993686B CN 101993686 B CN101993686 B CN 101993686B CN 200910090466 CN200910090466 CN 200910090466 CN 200910090466 A CN200910090466 A CN 200910090466A CN 101993686 B CN101993686 B CN 101993686B
- Authority
- CN
- China
- Prior art keywords
- viscosity
- sewage
- protective agent
- polymer solution
- viscosity protective
- 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
Abstract
The invention relates to a viscosity protective agent for sewage-prepared polymer solution. The viscosity protective agent comprises the following components in percentage by weight: (a) 10.0 to 20 percent of anionic or nonionic surfactant, (b) 10.0 to 20 percent of organic phosphonic acid or salt, (c) 2.0 to 10 percent of polyalcohol and the balance of water. The viscosity protective agent comprises components capable of capturing and masking oil, Fe2+ and S2- ions, and comprises components expanding and tackifying polymers and protecting hydroxyl groups. In extracted sewage with the mineralization of 40g/L, the viscosity of solution with the viscosity protective agent concentration of 600mg/L and the polymer concentration of 1,000mg/L is 15 to 20mPa.s; and compared with clear-water polymer solution with the same concentration, the sewage-prepared polymer solution has the viscosity retention ratio of over 60 percent, the viscosity protective agent comprises surfactants capable of reducing the interfacial tension, and the interfacial tension of the viscosity protective agent and raw oil is 32.7 mN/m under the concentration of 0.1 percent.
Description
Technical field:
The present invention relates to a kind of viscosity protective material for oil field high salinity extraction polymer solution made up by sewage.
Background technology
In the oilfield development process, conventional waterflood can only extraction 30%-40% crude oil, polymer flooding is to study and use one of maximum chemical displacement of reservoir oil technology both at home and abroad, the geologic condition that is fit to very much China's terrestrial facies reservoir, be particularly suitable for heterogeneous reservoir, use quite maturation through years of researches and mining site, and obtained preferably economic benefit.The injection technology of clear water prepared polymer solution is adopted in the most domestic oil field more, and long celebrating oil field is located in northwest arid area, and Freshwater resources are relatively poorer, and what adopt at present is the injection mode of clear water prepared polymer.Prepared polymer solution needs a large amount of clear water, and a large amount of extraction sewage needs to process, and still, because sewage salinity is high, contains Fe
2+, S
2-Plasma, bacterium and suspension content are high, reach the water quality requirement of prepared polymer solution fully, that purification of water quality and Stability Technique of Water Quality require is high, cost is high, and water quality is fully not up to standard yet, the polymers soln of waste water, generally only has 2-4mPa.s, relatively viscosity is lower with the clear water prepared polymer solution, and less stable, has seriously affected the Effectiveness and benefit of polymer flooding.
Prepared polymer solution needs a large amount of clear water, and a large amount of extraction sewage needs to process, therefore, more and more noticeable about the research of oil extraction-generated waste water injection allocation displacement of reservoir oil polymkeric substance in recent years, its research contents mainly concentrates on the aspects such as physical method that the feasibility of oil extraction-generated waste water prepared polymer solution and influence factor, sewage carries out modification, the agent of sewage modification, relates generally to: the impact of (1) salinity and ionic type and content.(2) dissolving effect of oxygen.(3) impact of bacterium.(4) impact of residual polymer.(5) impact of suspended substance.About the research of extraction waste water polymer injection, mainly rest on the desk research stage, focus mostly in the processing aspect to sewage quality, to tackify mechanism, reduction sewage salinity, the Fe of protection polymkeric substance
2+, S
2-Plasma, bacterium and suspended substance are less to the injury aspect research of polymer viscosity, and the report of on-the-spot large-scale application is not yet arranged.
Summary of the invention
The objective of the invention is to enter middle high water-cut stage for low permeability sandstone reservoir exploitation, the output sewage salinity is high, contain Fe
2+, S
2-Plasma; bacterium and suspension content are high; the polymer solution viscosity of waste water is low, and the polymers soln comparison viscosity loss of clear water preparation is larger, and the problem of less stable provides a kind of viscosity protective material for the oilfield produced waste water prepared polymer solution.
Of the present invention is a kind of viscosity protective material and using method thereof for oil field high salinity extraction polymer solution made up by sewage.This viscosity protective material is the composition miscible with water; it forms by weight 100%: (a) 10.0～20% negatively charged ion or nonionogenic tenside; (b) 10.0～20% organic phospho acid or salt, (c) 2.0～10% polyvalent alcohol, surplus is water.
Organic phospho acid is: a kind of in 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, phosphino-trialkyl tricarboxylic acid, Amino Trimethylene Phosphonic Acid, the diethylenetriamine pentamethylene phosphonic acids.
Polyvalent alcohol is a kind of in amine di-alcohol, amine three ethanol.
Tensio-active agent is a kind of in Sodium dodecylbenzene sulfonate, polyoxyethylene octyl phenol ether, the polyoxyethylated alkyl alcohol-10.
During use, according to indoor analysis to oilfield produced waste water composition, water-quality constituents, the protectant concentration of preferred employed viscosity, concentration range of choice: 200～2000mg/L.
Contain to oil Fe in this viscosity protective material product
2+, S
2-Plasma has the composition that captures and shelter; contain polymkeric substance is stretched tackify, protects the one-tenth of oh group to grade; be in the extraction sewage of 40g/L in salinity; viscosity protective material concentration 600mg/L, polymer concentration are that the viscosity of 1000mg/L solution can reach 15-20mPa.s; compare with the clear water polymers soln of same concentrations; viscosity retention ratio reaches more than 60%; contain simultaneously the tensio-active agent that can reduce interfacial tension, the interfacial tension with certain crude oil under 0.1% concentration reaches 32.7mN/m.The core test of viscosity protective material product shows, injects this viscosity protective material solution of 600mg/L after the core water drive, water filling 20PV, and core injury rate is-22.3%.Viscosity protective material and polymkeric substance, resident fluid have good compatibleness.
Described viscosity protective material and using method thereof have been carried out the individual well polymer injection test in place of 3 mouthfuls of wells; viscosity protective material concentration 600mg/L, polymer concentration are that the viscosity of 1000mg/L solution can reach more than the 15mPa.s; the corresponding oil well rate 73.6% that takes effect; average 126 tons of the oil that increase in individual well year, rig-site utilization has obtained obvious effect.
Embodiment
Embodiment 1
This viscosity protective material is the composition miscible with water; it forms by weight 100%: 20% negatively charged ion or nonionogenic tenside (polyoxyethylene octyl phenol ether); 20% organic phospho acid or salt (1-Hydroxy Ethylidene-1,1-Diphosphonic Acid); 10% polyvalent alcohol (trolamine), surplus are water.
The viscosity of 1000mg/L polymers soln can reach more than the 15mPa.s under the 600mg/L concentration, and the corresponding oil well rate 73.6% that takes effect on average increases 126 tons of oil individual well year, and rig-site utilization has obtained obvious effect.
Embodiment 2
This viscosity protective material is the composition miscible with water; it forms by weight 100%: 15.0% negatively charged ion or nonionogenic tenside (Sodium dodecylbenzene sulfonate); 15.0% organic phospho acid or salt (phosphino-trialkyl tricarboxylic acid); 8.0% polyvalent alcohol (trolamine), surplus are water.
The viscosity of 1000mg/L polymers soln can reach more than the 15mPa.s under the 600mg/L concentration, and the corresponding oil well rate 73.6% that takes effect on average increases 126 tons of oil individual well year, and rig-site utilization has obtained obvious effect.
Embodiment 3
This viscosity protective material is the composition miscible with water; it forms by weight 100%: 20% negatively charged ion or nonionogenic tenside (polyoxyethylated alkyl alcohol-10); 20% organic phospho acid or salt (Amino Trimethylene Phosphonic Acid); 10% polyvalent alcohol (amine di-alcohol), surplus is water.
The viscosity of 1000mg/L polymers soln can reach more than the 15mPa.s under the 600mg/L concentration, and the corresponding oil well rate 73.6% that takes effect on average increases 126 tons of oil individual well year, and rig-site utilization has obtained obvious effect.
Claims (2)
1. the viscosity protective material of a polymer solution made up by sewage, it is characterized in that: it forms by weight 100%: (a) 10.0～20% negatively charged ion or nonionogenic tenside, (b) 10.0～20% organic phospho acid, (c) 2.0～10% polyvalent alcohol, surplus is water;
Wherein said organic phospho acid is: a kind of in 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, Amino Trimethylene Phosphonic Acid, the diethylenetriamine pentamethylene phosphonic acids;
Described polyvalent alcohol is trolamine.
2. the viscosity protective material of a kind of polymer solution made up by sewage according to claim 1 is characterized in that: tensio-active agent is a kind of in Sodium dodecylbenzene sulfonate, polyoxyethylene octyl phenol ether, the polyoxyethylated alkyl alcohol-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090466 CN101993686B (en) | 2009-08-12 | 2009-08-12 | Viscosity protective agent for sewage-prepared polymer solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090466 CN101993686B (en) | 2009-08-12 | 2009-08-12 | Viscosity protective agent for sewage-prepared polymer solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101993686A CN101993686A (en) | 2011-03-30 |
| CN101993686B true CN101993686B (en) | 2013-03-27 |
Family
ID=43784455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910090466 Active CN101993686B (en) | 2009-08-12 | 2009-08-12 | Viscosity protective agent for sewage-prepared polymer solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101993686B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849835A (en) * | 2012-08-25 | 2013-01-02 | 东北石油大学 | Method for increasing viscosity of polyacrylamide solution prepared from oilfield produced water |
| CN108728072A (en) * | 2017-04-21 | 2018-11-02 | 中国石油化工股份有限公司 | A kind of oilfield polymer solution viscosity protective agent and its application |
| CN107572864B (en) * | 2017-09-22 | 2020-06-19 | 右江民族医学院 | Water-permeable concrete reinforcing agent and preparation method thereof |
| CN109019994B (en) * | 2018-09-30 | 2021-11-02 | 中石化江汉石油工程设计有限公司 | Oil field injection allocation sewage treatment process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1075596A (en) * | 1977-08-08 | 1980-04-15 | Jerry M. Waite | Oil recovery process employing a hydrocarbon slug and a thickened aqueous surfactant slug |
| CN100549123C (en) * | 2007-02-06 | 2009-10-14 | 中国石油天然气股份有限公司 | Heatproof additive of tackifier water solution for oil field |
| CN101319135A (en) * | 2008-07-01 | 2008-12-10 | 中国海洋石油总公司 | Drilling fluid viscosity stabilizer host |
-
2009
- 2009-08-12 CN CN 200910090466 patent/CN101993686B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101993686A (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abidin et al. | Polymers for enhanced oil recovery technology | |
| US6439308B1 (en) | Foam drive method | |
| CN103074049B (en) | Fracturing fluid prepared by recovery waste water of crude oil and preparation method of fracturing fluid | |
| CN101993686B (en) | Viscosity protective agent for sewage-prepared polymer solution | |
| CN103666430B (en) | For the surfactant composition and preparation method thereof of intensified oil reduction | |
| CN103540304A (en) | Surfactant composition for intensified oil production and preparation method thereof | |
| CN103582688A (en) | Oil recovery process for carbonate reservoirs | |
| CN103666431A (en) | Surfactant composition and preparation method thereof | |
| CN103421480A (en) | Oil displacement surfactant composition and preparation method thereof | |
| CN103254883A (en) | Oil-displacing agent and oil-displacing method for enhancing recovery ratio of high-temperature, high-salinity and high-hardness reservoir crude oil | |
| CN103421481A (en) | Glycine betaine surfactant composition system and purpose thereof | |
| CN102312666A (en) | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir | |
| CN105131927B (en) | Surfactant for binary combination flooding and preparation method thereof | |
| CN103865509A (en) | Long-acting mixed fluorocarbon surfactant treating agent for improving condensate gas reservoir recovery efficiency and application of mixed fluorocarbon surfactant treating agent | |
| CN110964494B (en) | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method | |
| CN112708406B (en) | Biochemical composite blocking remover and preparation method and application thereof | |
| CN103540305A (en) | Surfactant composition for chemical displacement of reservoir oil and preparation method thereof | |
| CN103773348B (en) | Poly-table binary composite oil displacement agent and flooding method | |
| CN105156087A (en) | Method for improving crude oil recovery ratio by using guanidine gum fracturing backflow liquid | |
| CN107652960A (en) | Enhancing emulsifying combination flooding composition and its application containing sulfosalt surfactant | |
| CN101942294B (en) | Offshore drilling fluid system and preparation method thereof | |
| CN103409126A (en) | Betaine surfactant system improved by segmented copolymer and application of betaine surfactant system | |
| Jiecheng et al. | Field application of chelatants in the handling of ASP-Flooding produced fluid | |
| CN103540306A (en) | Surfactant composition for tertiary oil recovery and preparation method thereof | |
| Zhang et al. | Performance evaluation of oil displacing agents for primary-minor layers of the Daqing Oilfield |
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 |