CN104762078A - Multifunctional foaming system used in air foam flooding - Google Patents
Multifunctional foaming system used in air foam flooding Download PDFInfo
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- CN104762078A CN104762078A CN201510118131.4A CN201510118131A CN104762078A CN 104762078 A CN104762078 A CN 104762078A CN 201510118131 A CN201510118131 A CN 201510118131A CN 104762078 A CN104762078 A CN 104762078A
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- 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
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
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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
- C09K8/584—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 surfactants
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Abstract
The invention discloses a multifunctional foaming system used in air foam flooding, relates to the technical field of oilfield development and is used for increasing oil recovery efficiency. The multifunctional foaming system is composed of following components, by weight: 0.1-0.5% of fatty alcohol polyoxyethylene ether sodium sulphate, 0.05-0.2% of silicon resin polyether emulsion, 0.05-0.2% of anionic polyacrylamide, 0.5-2% of molasses, 0.01-0.1% of yeast extraction, 0.0005-0.005% of ferrous sulfate, 0.00005-0.0002% of manganese sulfate, 0.05-0.5% of sodium nitrate and the balanced being water. The sum of weight percentages of all components is 100%. The multifunctional foaming system can solve a problem of requirements of a ground oxygen reducing apparatus and the profile control for plugging gas passages during conventional air foam flooding construction, and can enable the air foam flooding to be safe, more high-efficient and more low-cost.
Description
Technical field
Invention relates to oil-field development technical field, particularly a kind of multi-functional air foam flooding foaming system in tertiary oil recovery, improves oil recovery factor for mid-late oilfield development.
Background technology
Air foam flooding shaft is mixed to form the one raising recovery efficiency technique of foam as displacement of reservoir oil means by a certain percentage on ground or oil reservoir using air and foaming system.Air drives and combines with foam flooding by this technology, using foam as amendment, air is as oil-displacing agent, sweep efficiency can be significantly improved, displacement efficiency can be improved again, can also reduce reservoir that chemical flooding causes and environmental injury, be a kind of raising oil recovery factor technology with broad prospect of application simultaneously.
Foaming system (being foam system again) is the core of air foam flooding shaft technology, and foaming system is made up of tensio-active agent, stablizer and water usually.At present, known foaming system formula mainly contains following several: patent documentation 201210191135.1 discloses and is a kind ofly applicable to the foam system of oil field profile control and the displacement of reservoir oil and a kind of flooding method, in foaming system formula, tensio-active agent is alkylol amide Soxylat A 25-7, alkyl polyglycoside, two alkylamide Soxylat A 25-7s etc., stablizer is hard fatty acids ammonium, OA-12, polyoxyethylene glycol etc., thickening material is poly table agent, acrylamide, Mierocrystalline cellulose etc., inorganic salt are sodium-chlor, sodium sulfate, sodium bicarbonate etc., and surplus is water.Patent documentation 200910163127.4 discloses a kind of foaming system and is made up of Sodium dodecylbenzene sulfonate, modification guanidine glue, Natvosol and lauryl alcohol.Patent documentation 201210223060.0 discloses a kind of oil-gas field and adds composite foam system of nano particle and preparation method thereof, and described foam system is made up of sodium lauryl sulphate, modified silica nanoparticle, gegenion salt and water.Patent documentation 98813947.2 discloses a kind of foam compsoite oil drive method, and foaming system is made up of tensio-active agent, polymkeric substance and alkali.
Known foaming system, be all and meet the simple foaming of foaming system, surely steep function, though have foaming and foam stability energy preferably, but in air foam flooding shaft actual application, also there are following two aspect problems: one is that foamy body is little, meet oil easily froth breaking, shut-off capacity is limited, and has channeling problem is still serious.Next is the generation due to has channeling, and the oxygen in air very easily enters oil well, forms potential safety hazard.Because of the existence of the problems referred to above, in air foam flooding shaft implementation process, often supporting certain ground subtracts oxygen device and profile control measures, considerably increases cost of development like this, and profile control operation can cause air foam flooding shaft measure discontinuous, affects Flooding Efficiency.
Summary of the invention
The object of the invention is: for the deficiencies in the prior art, a kind of multi-functional air foam flooding foaming system is provided.Foaming system of the present invention is except possessing good foaming, steady bubble function, the oil recovery function yeast in oil reservoir can also be activated, the consumption of oil recovery function yeast biochemical reaction is utilized to enter oxygen in stratum, and the bio aggregate relying on its metabolism to produce and agglomerate realize the shutoff of formation Thief zone water stream channel, thus realize air foam flooding shaft safety, efficient, low cost movement.
The technical solution used in the present invention is:
One, a kind of raw material of multi-functional air foam flooding foaming system comprises:
1, polyoxyethylenated alcohol sodium sulfate: molecular formula RO (CH2CH2O) n-SO
3na (n=2 or 3, R12 ~ 15 alkyl).(Zhou Li, Ren Jing, Huang Yaru. the polyoxyethylenated alcohol sodium sulfate present situation [J] of West Europe and China. household chemicals science .2014 (03)).Character: colourless or micro-yellow transparent body of paste, soluble in water, there is excellent decontamination, emulsification, foam performance and anti-performance of hard water.Purposes: be widely used in the industries such as daily-use chemical industry, weaving, oil, leather, printing and dyeing.Production unit: Jiangsu Hai'an Petrochemical Plant.
2, silicone resin polyethers emulsion: being called for short MPS, is obtained by emulsification after silicone resin and ethyleneoxide addition, content of polyether 55%.(Huang Yanhua. the research and apply [D] of silicone resin and Siloxane-Oxyalkylene Copolymers. Jinan: Shandong University's master thesis, 2005).Character: transparent liquid, good water solubility.There is excellent steady bubble ability, be usually used in probing foaming agent, oil field foaming agent, fire-fighting foams agent etc.Production unit: Linyi Lv Sen Chemical Co., Ltd.
3, anionic polyacrylamide: another name: anionic partially hydrolyzed polyacrylamide, is called for short HPAM.(Li Tianxia. the preparations and applicatio [J] of anion-polyacrylamide flocculation agent. Speciality Petrochemicals .2006 (02)).Character: white or pale yellow powder, water-soluble, there is good defecate and purify and thickening power.Oil recovery, drilling mud, waste aluminum recycling, raising recovery ratio etc. are applied in petroleum industry.Production unit: Shandong Polymer Bio-Chemicals Co., Ltd..
4, molasses: molasses are byproducts of sugar industry, form because of the difference of sugaring raw material, processing conditions variant, wherein main containing a large amount of fermentable sugars (mainly sucrose 42 ~ 50%).(Wang Xiangru. cane molasses clarifying treatment and process front and back proximate analysis [J]. Chinese seasonings .2010 (02)).Molasses are brown color thick liquid, good water solubility, have the fragrant breath of yeast and the sweet taste of molasses.Can be used as substrate or the base-material of the fermented products such as yeast, monosodium glutamate, organic acid, can be used as raw material and the animal-feed of some food.Production unit: Beijing Hydron Xin Lin development in science and technology company limited.
5, yeast extract: also known as yeast extraction, is called for short YE.(rainbow. the research [J] of yeast extract. Chinese seasonings .2000 (02)).Main component is polypeptide, amino acid, flavour nucleotide, vitamin B group and trace element.It is a kind of excellent natural flavouring, in food service industry, tool has been widely used, also be the main raw material in ideal biological culture medium raw material and fermentation industry, the Yeast Phase of its effect and 8 times is worked as, and greatly can improve throughput rate and the leavened prod yield of bacterial classification.Production unit: Shanghai Yuan Tai Bioisystech Co., Ltd.
6, ferrous sulfate.
7, manganous sulfate.
8, SODIUMNITRATE.
9, water: oil-field flooding clear water or extraction sewage.
The each weight percentages of components of a kind of multi-functional air foam flooding foaming system is:
Polyoxyethylenated alcohol sodium sulfate: 0.1% ~ 0.5%;
Silicone resin polyethers emulsion: 0.05% ~ 0.2%;
Anionic polyacrylamide: 0.05% ~ 0.2%;
Molasses: 0.5% ~ 2%;
Yeast extract: 0.01% ~ 0.1%;
Ferrous sulfate: 0.0005% ~ 0.005%;
Manganous sulfate: 0.00005% ~ 0.0002%;
SODIUMNITRATE: 0.05% ~ 0.5%;
Surplus is oil-field flooding clear water or extraction sewage, and each weight percentages of components sum is absolutely.
Two, a kind of preparation method of multi-functional air foam flooding foaming system:
Major equipment: the Agitation Tank of belt stirrer.
Preparation method:
Step 1, polyoxyethylenated alcohol sodium sulfate, silicone resin polyethers emulsion, molasses, yeast extract, ferrous sulfate, manganous sulfate, SODIUMNITRATE seven kinds of medicaments to be added by weight percentage by weight percentage (no requirement (NR) of above seven kinds of medicament addition sequences) in the measured water be under whipped state, stir.
Step 2, measured anionic polyacrylamide by weight percentage slowly added be in solution that the step 1 under whipped state prepares, stir two hours and dissolve completely to anionic polyacrylamide.
Namely step 3, solution left standstill slaking step 2 prepared obtain multi-functional air foam flooding foaming system for 12 hours.
Multi-functional air foam flooding foaming system using method is sketched: by above-mentioned multi-functional air foam flooding foaming system, with air alter least-squares stratum, for improving oil recovery factor.It is 0.1 ~ 0.3 times of reservoir pore volume that described multi-functional air foam flooding foaming system injects slug, and air Injection slug is 0.1 ~ 0.3 times of reservoir pore volume, alter least-squares.
Beneficial effect of the present invention: multi-functional air foam flooding foaming system of the present invention, with air alter least-squares stratum after, intensive and the foam had good stability can be formed in the earth formation, effectively can not only realize regular air foam flooding function, the oil recovery function yeast in oil reservoir can also be activated, the consumption of oil recovery function yeast biochemical reaction is utilized to enter oxygen in stratum, and the bio aggregate relying on the metabolism of oil recovery function yeast to produce and agglomerate realize the shutoff of formation Thief zone water stream channel, reduce has channeling and occur.Thus save regular air foam flooding ground and need interpolation to subtract oxygen device and the reality such as need irregularly to carry out that profile control gas shutoff is altered, realize air foam flooding shaft safety, efficient, low cost movement.
Range of application: a kind of multi-functional air foam flooding foaming system of the present invention, is applicable to waterflooding 2 years and above and temperature lower than the oil reservoir of 70 DEG C.
Embodiment
Embodiment 1: multi-functional air foam flooding foaming system, each component effective constituent weight percent is:
Polyoxyethylenated alcohol sodium sulfate: 0.5%;
Silicone resin polyethers emulsion: 0.2%;
Anionic polyacrylamide: 0.2%;
Molasses: 2%;
Yeast extract: 0.1%;
Ferrous sulfate: 0.005%;
Manganous sulfate: 0.0002%;
SODIUMNITRATE: 0.5%;
Surplus is beggar level ground oilfield injection water, and each weight percentages of components sum is absolutely.
The present embodiment preparation method:
Step 1, polyoxyethylenated alcohol sodium sulfate, silicone resin polyethers emulsion, molasses, yeast extract, ferrous sulfate, manganous sulfate, SODIUMNITRATE seven kinds of medicaments to be added by weight percentage by weight percentage (no requirement (NR) of above seven kinds of medicament addition sequences) in the measured beggar level ground oilfield injection water be under whipped state, stir.
Step 2, measured anionic polyacrylamide by weight percentage slowly added be in solution that the step 1 under whipped state prepares, stir two hours and dissolve completely to anionic polyacrylamide.
Namely step 3, solution left standstill slaking step 2 prepared obtain multi-functional air foam flooding foaming system for 12 hours.
The result of use of embodiment 1: multi-functional air foam flooding foaming system embodiment 1 prepared, with oil field, air alter least-squares beggar level ground 36-21 well, injection rate is 0.2 times of reservoir pore volume.After measure implements six months, corresponding well group is moisture have dropped 16.75%, and increase day by day oil 4.65 tons, and corresponding well mouth of oil well no oxygen detects.
Embodiment 2: multi-functional air foam flooding foaming system, each component effective constituent weight percent is:
Polyoxyethylenated alcohol sodium sulfate: 0.1%;
Silicone resin polyethers emulsion: 0.05%;
Anionic polyacrylamide: 0.05%;
Molasses: 0.5%;
Yeast extract: 0.01%;
Ferrous sulfate: 0.0005%;
Manganous sulfate: 0.00005%;
SODIUMNITRATE: 0.05%;
Surplus is beggar level ground oilfield produced waste water, and each weight percentages of components sum is absolutely.
The present embodiment preparation method:
Step 1, polyoxyethylenated alcohol sodium sulfate, silicone resin polyethers emulsion, molasses, yeast extract, ferrous sulfate, manganous sulfate, SODIUMNITRATE seven kinds of medicaments to be added by weight percentage by weight percentage (no requirement (NR) of above seven kinds of medicament addition sequences) in the measured beggar level ground oilfield produced waste water be under whipped state, stir.
Step 2, measured anionic polyacrylamide by weight percentage slowly added be in solution that the step 1 under whipped state prepares, stir two hours and dissolve completely to anionic polyacrylamide.
Namely step 3, solution left standstill slaking step 2 prepared obtain multi-functional air foam flooding foaming system for 12 hours.
The result of use of embodiment 2: multi-functional air foam flooding foaming system embodiment 1 prepared, with oil field, air alter least-squares beggar level ground 43-46 well, injection rate is 0.25 times of reservoir pore volume.After measure implements six months, corresponding well group is moisture have dropped 21.2%, and increase day by day oil 5.12 tons, and corresponding well mouth of oil well no oxygen detects.
Comparative example 1: on the basis of embodiment 1, does not add molasses, yeast extract, ferrous sulfate, manganous sulfate, SODIUMNITRATE
Polyoxyethylenated alcohol sodium sulfate: 0.5%;
Silicone resin polyethers emulsion: 0.2%;
Anionic polyacrylamide: 0.2%;
Surplus is beggar level ground oilfield injection water, and each weight percentages of components sum is absolutely.
The preparation method of comparative example 1 is with the preparation method of embodiment 1.
The result of use of comparative example: foam system comparative example 1 prepared, with oil field, air alter least-squares beggar level ground 57-43 well, injection rate is 0.22 times of reservoir pore volume.After measure implements six months, corresponding well group is moisture have dropped 5.5%, and increase day by day oil 1.26 tons.But 3 months oil wells start to detect oxygen after measure, air has channeling problem is serious.
Claims (2)
1. a multi-functional air foam flooding foaming system, is characterized in that: each weight percentages of components is:
Polyoxyethylenated alcohol sodium sulfate: 0.1% ~ 0.5%;
Silicone resin polyethers emulsion: 0.05% ~ 0.2%;
Anionic polyacrylamide: 0.05% ~ 0.2%;
Molasses: 0.5% ~ 2%;
Yeast extract: 0.01% ~ 0.1%;
Ferrous sulfate: 0.0005% ~ 0.005%;
Manganous sulfate: 0.00005% ~ 0.0002%;
SODIUMNITRATE: 0.05% ~ 0.5%;
Surplus is oil-field flooding clear water or extraction sewage, and each weight percentages of components sum is absolutely.
2. a kind of multi-functional air foam flooding foaming system according to claim 1, is characterized in that: preparation method:
Step 1, polyoxyethylenated alcohol sodium sulfate, silicone resin polyethers emulsion, molasses, yeast extract, ferrous sulfate, manganous sulfate, SODIUMNITRATE seven kinds of medicaments to be added by weight percentage by weight percentage (no requirement (NR) of above seven kinds of medicament addition sequences) in the measured water be under whipped state, stir.
Step 2, measured anionic polyacrylamide by weight percentage slowly added be in solution that the step 1 under whipped state prepares, stir two hours and dissolve completely to anionic polyacrylamide.
Namely step 3, solution left standstill slaking step 2 prepared obtain multi-functional air foam flooding foaming system for 12 hours.
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| CN201510118131.4A CN104762078B (en) | 2015-03-18 | 2015-03-18 | A kind of multi-functional air foam flooding foaming system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590607A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature and salt resistance and low tension foaming agent composition and preparation method of the same |
| CN110591681A (en) * | 2019-08-12 | 2019-12-20 | 中国石油天然气股份有限公司 | Foaming system for air foam flooding and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1093589C (en) * | 1998-04-06 | 2002-10-30 | 大庆石油管理局 | Foam compsoite oil drive method |
| CN102434137B (en) * | 2011-12-16 | 2014-08-06 | 中国石油天然气股份有限公司 | Ultralow interface tension coupling type air-foam oil displacement method |
| CN102618246B (en) * | 2012-03-08 | 2014-07-23 | 中国石油天然气股份有限公司 | Composite foam flooding method suitable for oil field exploitation |
| CN102703052B (en) * | 2012-06-11 | 2014-05-07 | 中国石油天然气股份有限公司 | Foam system suitable for profile control and oil displacement of oil field and oil displacement method |
| CN104059625B (en) * | 2014-07-02 | 2017-02-15 | 成都理工大学 | Method for preparing high-stability heat-resistance and salt-tolerance air foam oil displacing agent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590607A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature and salt resistance and low tension foaming agent composition and preparation method of the same |
| CN106590607B (en) * | 2015-10-20 | 2019-07-09 | 中国石油化工股份有限公司 | Temperature-resistant anti-salt low-tension foaming agent combination and preparation method thereof |
| CN110591681A (en) * | 2019-08-12 | 2019-12-20 | 中国石油天然气股份有限公司 | Foaming system for air foam flooding and preparation method and application thereof |
| CN110591681B (en) * | 2019-08-12 | 2022-02-01 | 中国石油天然气股份有限公司 | Foaming system for air foam flooding and preparation method and application thereof |
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