CN102234503A - Oil displacement agent - Google Patents
Oil displacement agent Download PDFInfo
- Publication number
- CN102234503A CN102234503A CN2010101520880A CN201010152088A CN102234503A CN 102234503 A CN102234503 A CN 102234503A CN 2010101520880 A CN2010101520880 A CN 2010101520880A CN 201010152088 A CN201010152088 A CN 201010152088A CN 102234503 A CN102234503 A CN 102234503A
- Authority
- CN
- China
- Prior art keywords
- oil
- peroxide
- sodium
- water
- displacing agent
- 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
Landscapes
- Lubricants (AREA)
Abstract
The invention relates to an oil displacement agent for tertiary recovery, comprising 0.001-60wt% of oxidizing agent as a main agent, 0-5wt% of surfactant as an adjuvant, and the reminder consisting of water, wherein, all weight percents are based on the total weight of the composition. According to the invention, the oil production efficiency is greatly improved, the problems of block, damage, erosion and the like of stratum caused by alkaline in binary flooding or alkaline flooding are overcome, and the oil displacement agent is clean and safe and does not pollute the environment.
Description
Technical field
The present invention relates to a kind of oil-displacing agent, particularly a kind of used for tertiary oil recovery oil-displacing agent.
Background technology
The most of oil field of China has entered tertiary phase, mainly be utilize chemical substance improve oil, gas, water and rock each other performance so that exploit out more oil.The general polymer flooding that uses, injection of polymer viscous water in the past stratum is to improve recovery ratio.But polymer injection drives and also exists unsurmountable defective: polymkeric substance is higher to requirements in water quality, the quality of the direct impact polymer dosing of calcium ions and magnesium ions content in the water; Be linear winding state after polymkeric substance dissolves in water, when the stratum is injected, can be subjected to the shearing of line of pipes, oil pipe and borehole, thereby reduce viscosity; Polymkeric substance also is subjected to Temperature Influence when using, and the general requirement formation temperature is no more than 70 ℃, and polymer flooding needs supporting large-scale dosing equipment to stratum conditional request harshness.In order to overcome above problem, the binary that more present Oilfield using tensio-active agents add alkali is driven or alkali drives, but after being to use for some time, finds that the mineral substance in alkali and the stratum reacts, material is not allowed in generation, precipitate in the fluid migration process, stop up the stratum, cause zone permeability sharply to descend, fouling is serious in the extraction well, cause frequent well card, displacement of reservoir oil rate decreases, and causes continuing displacement of reservoir oil work and is difficult to carry out smoothly.
Summary of the invention
The object of the present invention is to provide a kind of oil-displacing agent to be used for solving that alkali drives or binary is driven obstruction, destruction and the displacement of reservoir oil rate low problem of alkali to the stratum; Simultaneously also solve polymer flooding, need the difficult problem of supporting large-scale dosing equipment stratum conditional request harshness; And can be applied in the stratum of low permeability and carry out the displacement of reservoir oil, do not need supporting huge equipment, can finish injection work with existing water injection equipment.
Another object of the present invention provides the preparation method of oil-displacing agent.
Oil-displacing agent of the present invention is 100% in the constituent gross weight, contains host 0.001%-60% in the composition, is oxygenant; Contain auxiliary 0%-5%, be tensio-active agent; Surplus is a water.
Described oxygenant is one or more a mixture of the oxygen acid of peroxide, some chlorine and its esters, permanganic acid salt, peroxy acid salt.
Described oxygenant is one or more the mixture in hydrogen peroxide, chlorine peroxide, sodium peroxide, Potassium peroxide, sodium perchlorate, Potcrate, clorox, inferior calcium chlorite, potassium permanganate, sodium permanganate, crystal water Sodium peroxoborate, Sodium Persulfate, Sodium peroxoborate, SPC-D, the carbamide peroxide.
Described oxygenant is one or more the mixture in hydrogen peroxide, chlorine peroxide, sodium permanganate, four water sodium perborate, clorox, SPC-D, the carbamide peroxide.
Described oxygenant is solid or solution form.
Described tensio-active agent is one or more the mixture in alkylphenol polyoxyethylene, alkylphenol polyoxyethylene sulfuric acid, polyoxyethylenated alcohol sodium sulfate, octadecyl trimethyl ammonium chloride or octadecyl trimethylammonium bromide, Varion CDG-K, the biological enzyme.
Principal feature of the present invention has been to use the host of oxygenant as oil-displacing agent, after using in oil field system, has improved displacement of reservoir oil rate greatly, major cause have following some:
(1) oxygenant can become small molecules with the crude oil macromole, reduce the viscosity of crude oil, making viscosity is that viscous crude between 100～10 000mPas and the special viscous crude between 10 000～50 000mPas are degraded, part is degraded into small molecules crude oil, become viscosity and be conventional oil, increased the flowability of crude oil less than 100mPas;
(2) oxygenant with the process of crude oil reaction in can produce corresponding gas, gas has " cavitation " or the instant of detonation of micro that are similar to the ultrasonic wave mechanism in forming process, produce a large amount of heat, crude oil and rock or the contact surface temperature of other stratum mineral are raise, reduced the adsorptive power of crude oil, crude oil is easy to break away from adsorbed rock or other stratum mineral;
(3) gas of oxygenant generation is subjected to the ground temperature effect, expands, and producing energy increases, and the crude oil flow velocity is accelerated, and washes away and carry the ability that is adsorbed on rock or place, stratum crude oil to strengthen;
(4) before adding oil-displacing agent, in-place oil and rock or other stratum mineral are in solid-liquid biphase equilibrium state; When oxygenant exists between the solid-liquid contact surface and discharges gas, will change the force structure of crude oil absorption, broken original adsorption equilibrium, formed new gas, the steady state of solid, liquid three-phase coexistence, made crude oil break away from adsorbed rock or other stratum mineral.
And oxygenant do not increase the viscosity of liquid when existing with solution morphology, do not change the original physical properties of liquid, convenient, the safety of injection process yet.
Another characteristics of the present invention have been to use tensio-active agent as auxiliary, can reduce oil water interfacial tension, play the effect of emulsification, viscosity reduction, utilize the surfactivity of tensio-active agent, can permeate and peel off the crude oil of absorption.
The present invention prepares simply, only oxygenant, tensio-active agent and water need be mixed in use, injects water injection well in use and gets final product.
The present invention is applied to tertiary oil recovery, has following outstanding beneficial effect than prior art:
(1) oxygenant is used for the host of oil-displacing agent, is used for the tertiary oil recovery process, can significantly improve tar productivity, overcome alkali drive or contain the alkali binary drive in alkali to the stratum problems such as obstruction, destruction and erosion;
(2) gas and the salts solution that are produced in oil displacement process of oxygenant do not produce destruction to crude oil, and cleaning, safety, and be free from environmental pollution;
(3) other oil-displacing agent is used oil-displacing agent of the present invention at the equipment that configuration the time need match, and does not need large-scale dosing equipment, the saving cost;
(4) oxygenant is used for the host of oil-displacing agent, is used for the tertiary oil recovery process, and the adsorptive capacity in the stratum is very little, even does not have absorption, compares with other oil-displacing agent, has improved the oil-displacing agent utilization ratio.
Embodiment
Further specify the present invention below by specific embodiment.
Oil-displacing agent and water source that the present invention mixes oxygenant, tensio-active agent and water back formation in use inject water injection well together, arrive oil reservoir again from water injection well, and be as shown below:
The testing laboratory of displacement of reservoir oil rate is calculated according to following formula:
Displacement of reservoir oil rate %=(displace oil mass/make irreducible water to enter oil mass) * 100%
Embodiment 1:
Raw material:
The aqueous hydrogen peroxide solution of 30% concentration (hydrogen peroxide) 60g, water 40g
Using method: aqueous hydrogen peroxide solution (hydrogen peroxide) 60g and the water 40g of 30% concentration are mixed the back stirring, and being diluted to concentration then is 1%, injects water injection well.
Experimental result:
Embodiment 2:
Raw material:
The chlorine peroxide of 0.25% concentration (dioxide peroxide) aqueous solution 30g, alkylphenol polyoxyethylene 5g, water 65g
Using method: chlorine peroxide (dioxide peroxide) aqueous solution 30g, alkylphenol polyoxyethylene 5g and the water 65g of 0.25% concentration are mixed the back stirring, and being diluted to concentration then is 5%, injects water injection well.
Experimental result:
Embodiment 3:
Raw material:
The Varion CDG-K 15g of sodium permanganate 10g, 20% concentration, water 75g
Using method: the Varion CDG-K 15g and the water 75g of sodium permanganate 10g, 20% concentration are mixed the back stirring, and being diluted to concentration then is 2%, injects water injection well.
Experimental result:
Embodiment 4:
Raw material:
Four water sodium perborate (pressed powder) 25g, water 75g
Using method: four water sodium perborate (pressed powder) 25g and water 75g are mixed the back stirring, and being diluted to concentration then is 2%, injects water injection well.
Experimental result:
Embodiment 5:
Raw material:
Carbamide peroxide (pressed powder) 10g, SPC-D 10g, water 80g
Using method: carbamide peroxide (pressed powder) 10g, SPC-D 10g and water 80g are mixed the back stirring, and being diluted to concentration then is 2%, injects water injection well.
Experimental result:
Embodiment 6:
Raw material:
The clorox 10g of 10% concentration, fatty alcohol-ether sodium sulfate aqueous solution 5g, water 85g
Using method: clorox 10g, fatty alcohol-ether sodium sulfate aqueous solution 5g, the water 85g of 10% concentration are mixed the back stirring, and being diluted to concentration then is 3%, injects water injection well.
Experimental result:
Embodiment 7:
Raw material:
SPC-D 0.001g, carbamide peroxide 10g, alkylphenol polyoxyethylene 10g, octadecyl trimethylammonium bromide aqueous solution 2g, water 77.999g
Using method: SPC-D 0.001g, carbamide peroxide 10g, alkylphenol polyoxyethylene 10g, octadecyl trimethylammonium bromide aqueous solution 2g, water 77.999g are mixed the back stir, being diluted to concentration then is 1%, injects water injection well.
Experimental result:
Embodiment 8:
Raw material:
SPC-D 10g, sodium permanganate 10g, hexadecyl benzene sulfonate aqueous solution 2g, water 78g
Using method: SPC-D 10g, sodium permanganate 10g, hexadecyl benzene sulfonate aqueous solution 2g, water 78g are mixed the back stir, being diluted to concentration then is 2%, injects water injection well.
Experimental result:
Embodiment 9:
Raw material:
Potcrate 50g, biological enzyme solution 5g, water 45g
Using method: Potcrate 50g, biological enzyme solution 5g and water 45g are mixed the back stirring, and being diluted to concentration then is 3%, injects water injection well.
Experimental result:
Comparative Examples 10: utilize the on-the-spot displacement of reservoir oil liquid of grand celebration alkali-Biao agent displacement of reservoir oil alive to test
Contain NaOH 1.5% in the oil driving liquid; Table agent alive (petroleum base sodium sulfonate) 0.5%
Claims (6)
1. oil-displacing agent, it is characterized in that: in the constituent gross weight is 100%, contains host 0.001%～60% in the composition, is oxygenant; Contain auxiliary 0%～5%, be tensio-active agent; Surplus is a water.
2. oil-displacing agent according to claim 1 is characterized in that: described oxygenant is one or more a mixture of the oxygen acid of peroxide, some chlorine and its esters, permanganic acid salt, peroxy acid salt.
3. oil-displacing agent according to claim 2 is characterized in that: described oxygenant is one or more the mixture in hydrogen peroxide, chlorine peroxide, sodium peroxide, Potassium peroxide, sodium perchlorate, Potcrate, clorox, inferior calcium chlorite, potassium permanganate, sodium permanganate, crystal water Sodium peroxoborate, Sodium Persulfate, Sodium peroxoborate, SPC-D, the carbamide peroxide.
4. oil-displacing agent according to claim 3 is characterized in that: described oxygenant is one or more the mixture in hydrogen peroxide, chlorine peroxide, sodium permanganate, four water sodium perborate, clorox, SPC-D, the carbamide peroxide.
5. according to the described oil-displacing agent of claim 1～4, it is characterized in that: described oxygenant is solid or solution form.
6. oil-displacing agent according to claim 1 is characterized in that: described tensio-active agent is one or more the mixture in alkylphenol polyoxyethylene, alkylphenol polyoxyethylene sulfuric acid, polyoxyethylenated alcohol sodium sulfate, octadecyl trimethyl ammonium chloride or octadecyl trimethylammonium bromide, Varion CDG-K, the biological enzyme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101520880A CN102234503A (en) | 2010-04-21 | 2010-04-21 | Oil displacement agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101520880A CN102234503A (en) | 2010-04-21 | 2010-04-21 | Oil displacement agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102234503A true CN102234503A (en) | 2011-11-09 |
Family
ID=44885639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101520880A Pending CN102234503A (en) | 2010-04-21 | 2010-04-21 | Oil displacement agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102234503A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
| CN104449635A (en) * | 2014-12-29 | 2015-03-25 | 江苏健神生物农化有限公司 | Oil-displacing and antibacterial type clay stabilizer and preparation method thereof |
| CN105219366A (en) * | 2014-06-18 | 2016-01-06 | 中国石油化工股份有限公司 | A kind of polymer chemistry unblocking agent |
| CN105273702A (en) * | 2014-07-17 | 2016-01-27 | 天津大港油田钻采技术开发公司 | Solid-free anti-hydrogen-sulfide low-damage well washing fluid and preparation method |
| CN114888919A (en) * | 2022-05-07 | 2022-08-12 | 浙江可信竹木有限公司 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
-
2010
- 2010-04-21 CN CN2010101520880A patent/CN102234503A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 20060315 钟立国 "水热裂解开采稠油关键技术研究" B019-1页 1-6 , 第3期 * |
| 钟立国: ""水热裂解开采稠油关键技术研究"", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540303A (en) * | 2012-07-12 | 2014-01-29 | 中国石油化工股份有限公司 | Composite surfactant composition as well as preparation method thereof |
| CN105219366A (en) * | 2014-06-18 | 2016-01-06 | 中国石油化工股份有限公司 | A kind of polymer chemistry unblocking agent |
| CN105273702A (en) * | 2014-07-17 | 2016-01-27 | 天津大港油田钻采技术开发公司 | Solid-free anti-hydrogen-sulfide low-damage well washing fluid and preparation method |
| CN105273702B (en) * | 2014-07-17 | 2018-06-15 | 天津大港油田石油工程研究院钻采技术开发有限公司 | Anti- hydrogen sulfide Low Damage flushing fluid of Solid Free and preparation method thereof |
| CN104449635A (en) * | 2014-12-29 | 2015-03-25 | 江苏健神生物农化有限公司 | Oil-displacing and antibacterial type clay stabilizer and preparation method thereof |
| CN114888919A (en) * | 2022-05-07 | 2022-08-12 | 浙江可信竹木有限公司 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
| CN114888919B (en) * | 2022-05-07 | 2024-05-07 | 浙江可信竹木有限公司 | Manufacturing method of bamboo-wood composite board capable of recycling waste materials and bamboo-wood composite board |
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 | |
| CN102504794B (en) | Hydrophobically associating polymer and mixed surfactant binary compound oil displacement system | |
| CN102807849B (en) | Gel plugging agent for deep profile control of higher temperature oil reservoir and preparation method of gel plugging agent | |
| CN102061158B (en) | Foam reinforcing polymer oil displacement agent and method | |
| CN103422840B (en) | Use the flooding method of anions and canons complexed surfactant | |
| CN102643636B (en) | Auxiliary enhancement chemical agent for oil extraction with heat | |
| CN106801597A (en) | Heavy crude reservoir combined type flooding method and displacement composition | |
| CN102234503A (en) | Oil displacement agent | |
| CN103059829B (en) | Nanometer emulsion type water control fracturing fluid for tight gas reservation well and preparation method thereof | |
| CN103881673B (en) | A kind of injection well oxidation gel breaker and preparation method thereof | |
| CN102153998A (en) | Composite flooding system containing lipopeptide biological surfactant and application thereof | |
| CN103540303B (en) | Composite surfactant composition as well as preparation method thereof | |
| CN106433592A (en) | Organic base composite oil displacement system suitable for high-calcium oil reservoirs, and preparation method thereof | |
| CN103468235A (en) | Chemical assistant for thermal recovery of thick oil and application thereof | |
| CN102703048B (en) | Efficient salt-tolerant high-temperature-resistant oil displacement agent for heavy oil reservoirs and preparation method thereof | |
| CN103351857B (en) | A kind of salt tolerant worm-like micelle systems, its preparation method and the purposes in the displacement of reservoir oil thereof | |
| CN104388070A (en) | Oil-well unblocking agent and method for preparing same | |
| CN109401742A (en) | A kind of heat-resistant salt-resistant foam profile system being formulated by highly mineralized formation brines | |
| CN103666439A (en) | Seawater-based instant fracturing fluid and preparation method thereof | |
| CN102120929B (en) | Preparation method of gas-well water controlling agent | |
| CN103421481A (en) | Glycine betaine surfactant composition system and purpose thereof | |
| CN102876313A (en) | Hydrophobically associated polymer-composite surfactant binary combination flooding system and method | |
| CN104059625A (en) | Method for preparing high-stability heat-resistance and salt-tolerance air foam oil displacing agent | |
| CN106479477A (en) | A kind of encapsulating solids acid and its preparation and application | |
| Fogang et al. | Viscosity-reducing agents (breakers) for viscoelastic surfactant gels for well stimulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111109 |