CN102220117B - Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields - Google Patents
Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields Download PDFInfo
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- CN102220117B CN102220117B CN 201110115405 CN201110115405A CN102220117B CN 102220117 B CN102220117 B CN 102220117B CN 201110115405 CN201110115405 CN 201110115405 CN 201110115405 A CN201110115405 A CN 201110115405A CN 102220117 B CN102220117 B CN 102220117B
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Abstract
The invention relates to an oil displacement agent for improving recovery ratio technology in the process of oilfield development, in particular to a bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields; the bioactivity oil displacement agent is characterized in that: the bioactivity oil displacement agent is prepared by the following ingredients in percentage by weight: 0.3-0.5 percent of SUN biological enzyme, 0.02-0.04 percent of SUN-B4, 0.01-0.02 percent of formaldehyde, 0.3-0.5 percent of APG1214 and the balance of water, wherein the APG1214 is alkyl polyglucoside, the SUN-B4 is formed by mixing scale-prevention antisludging agent, enzyme activator and water according to weight ratio of 15:5:80; the oil displacement agent has hypersalinity resistance and high calcium ion resistance, is non-corrosive to equipment, is harmless to environment, has high displacement efficiency in the high-hypersalinity (10*104mg/l) high-calcium (2000mg/1) complex water system, and has low and stable oil-water interface stress, and the displacement efficiency can be improved by more than 15 percent when the concentration of the injected oil displacement agent reaches 700mg/1h.
Description
Technical field
The present invention relates to a kind of be applicable to improve in the oilfield development process oil-displacing agent, particularly high salinity of recovery efficiency technique and the biological activity oil-displacing agent that extra permeability oilfield raising recovery ratio is used.
Background technology
﹠ Application on Oil Recovery mainly contains polymer oil-displacing agent, surfactant flooding agent, microorganism oil-displacing agent etc. at present with oil-displacing agent, polymer oil-displacing agent and microorganism oil-displacing agent be not because molecular weight is suitable for more greatly extra permeability oilfield, and most surfactant flooding agent anti-salt temperature-resistants commonly used are relatively poor, are subject to the restriction of formation water salinity in the rig-site utilization.The Ordos Basin reservoir lithology is fine and close, and poor properties and formation water salinity are high, mostly are greatly low porosity and low permeability, special low-permeability oilfield, and oil recovery rate is low, and primary recovery rate is low, can only reach 8 ~ 12%.After adopting water filling to keep energy, secondary recovery factor can bring up to 25 ~ 30%, but still has a large amount of crude oil to stay underground mining not out, and development effectiveness is poor.In order to improve the development effectiveness that prolongs extra-low permeability oil reservoirs, improve oil recovery factor, need anti-high salinity to be applicable to the oil-displacing agent of extra-low permeability oil reservoirs.
Summary of the invention
The purpose of this invention is to provide a kind of extra permeability oilfield and improve the biological activity oil-displacing agent that recovery ratio is used, it has anti-high salinity, anti-high-calcium ionic, pipeline, notes are adopted the equipment non-corrosiveness, environmentally safe, be applicable to the characteristics such as extra-low permeability oil reservoirs.
The object of the present invention is achieved like this, a kind of extra permeability oilfield improves the biological activity oil-displacing agent that recovery ratio is used, it is characterized in that: it is formulated by following weight percent by following component: the SUN biological enzyme is that 0.3-0.5%, SUN-B4 are that 0.02-0.04%, formaldehyde are that 0.01-0.02%, APG1214 are 0.3-0.5%, and surplus is water; Described APG1214 is alkyl glycoside; Described SUN-B4 by anti-scale inhibitor, zymoexciter and water by 15:5: 80 weight ratios are mixed into.
The optimum formula that a kind of extra permeability oilfield improves the biological activity oil-displacing agent that recovery ratio uses is formulated by following weight percent by following component: the SUN biological enzyme is 0.5%, SUN-B4 is 0.04%, formaldehyde is 0.01%, APG1214 is 0.5%, and surplus is water.
Described APG1214 is that alkyl glycoside is a kind of to non-stimulated, the very gentle plant-sourced tensio-active agent of human body skin; Described SUN biological enzyme oil displacement agent extracts generation from nature biotechnology, the multiple biological compound of taking as the leading factor with enzyme forms, its main component: protein-prozyme (NOYEES), composite bio-active thing (BIO-A), bio-active substance (BIO-P), alienation bacterium, natural biological extract have reliable security and Biodegradable.
Described anti-scale inhibitor is the polycarboxylic acid Scale inhibitors; Described zymoexciter is protein kinase activator.
All there is sale in above-mentioned reagent market.
The blending process of the biological activity oil-displacing agent that described a kind of extra permeability oilfield raising recovery ratio is used is: take by weighing raw material by following weight percent: the SUN biological enzyme is 0.3-0.5% as 0.02-0.04%, formaldehyde as 0.01-0.02%, APG1214 as 0.3-0.5%, SUN-B4, and surplus is water; At normal temperatures, inject first the water dissolution SUN biological enzyme of above-mentioned weight, SUN-B4 and the formaldehyde of the above-mentioned weight of rear adding that stirs, after fully mixing, restir ceaselessly continues to add the APG1214 of above-mentioned weight in the situation, wait stir fully after, get final product.
Advantage of the present invention is: oil-displacing agent of the present invention is applicable to improve in the oilfield development process oil recovery factor of extra-low permeability oil reservoirs.Oil-displacing agent non-corrosiveness of the present invention, nontoxicity is in high salinity (10 * 10
4Mg/l) and high calcium (2000 mg/l) Complex water body be that oil displacement efficiency is high under the condition, oil water interfacial tension is low and stable, when implantation concentration was 700mg/l, oil displacement efficiency can reach more than 15%.
Description of drawings
The invention will be further described below in conjunction with embodiment and accompanying drawing:
Fig. 1 is the oil-displacing agent salt resistance correlation curve of embodiments of the invention;
Fig. 2 is the anti-Ca of the oil-displacing agent of embodiments of the invention
2+The property correlation curve;
Fig. 3 is that the oil-displacing agent of embodiments of the invention improves the recovery test curve.
Embodiment
Below by the specific embodiment that provides the present invention is described clearly further, but not as a limitation of the invention.
Embodiment 1
The blending process of the biological activity oil-displacing agent that a kind of extra permeability oilfield raising recovery ratio is used is: take by weighing raw material by following weight percent: the SUN biological enzyme is 0.3kg as 0.02kg, formaldehyde as 0.01kg, APG1214 as 0.3kg, SUN-B4, water 99.37kg; At normal temperatures, inject first the SUN biological enzyme of the water dissolution 0.3kg of 99.37kg, SUN-B4 and the 0.01kg formaldehyde of the rear adding 0.02kg that stirs are after fully mixing, restir ceaselessly continues to add the APG1214 of 0.3kg in the situation, waits to get final product after stirring fully.At last this oil-displacing agent is injected the stratum.
Wherein, described APG1214 is that alkyl glycoside is a kind of to non-stimulated, the very gentle plant-sourced tensio-active agent of human body skin; Described SUN biological enzyme oil displacement agent extracts generation from nature biotechnology, the multiple biological compound of taking as the leading factor with enzyme forms, its main component: protein-prozyme (NOYEES), composite bio-active thing (BIO-A), bio-active substance (BIO-P), alienation bacterium, natural biological extract have reliable security and Biodegradable; Described SUN-B4 is mixed into by 15: 5: 80 weight ratios by anti-scale inhibitor, zymoexciter and water; Described anti-scale inhibitor is the polycarboxylic acid Scale inhibitors; Described zymoexciter is protein kinase activator.
Embodiment 2: the blending process of the biological activity oil-displacing agent that a kind of extra permeability oilfield raising recovery ratio is used is: take by weighing raw material by following weight percent: the SUN biological enzyme is 0.4kg as 0.03kg, formaldehyde as 0.015kg, APG1214 as 0.4kg, SUN-B4, water 99.155kg; At normal temperatures, inject first the SUN biological enzyme of the water dissolution 0.4kg of 99.155kg, SUN-B4 and the 0.015kg formaldehyde of the rear adding 0.03kg that stirs, after fully mixing, restir ceaselessly continues to add the APG1214 of 0.4kg in the situation, wait stir fully after, get final product.At last this oil-displacing agent is injected the stratum.
Embodiment 3
The blending process of the biological activity oil-displacing agent that a kind of extra permeability oilfield raising recovery ratio is used is: take by weighing raw material by following weight percent: the SUN biological enzyme is 0.5kg as 0.04kg, formaldehyde as 0.02kg, APG1214 as 0.5kg, SUN-B4, and water is 98.94kg; At normal temperatures, inject first the SUN biological enzyme of the water dissolution 0.5kg of 98.94kg, SUN-B4 and the 0.02kg formaldehyde of the rear adding 0.04kg that stirs, after fully mixing, restir ceaselessly continues to add the APG1214 of 0.5kg in the situation, wait stir fully after, get final product.At last this oil-displacing agent is injected the stratum.
Embodiment 4: embodiment 4 is basic identical with embodiment 1, and difference is: take by weighing raw material by following weight percent: the SUN biological enzyme is that 0.5kg, SUN-B4 are that 0.04kg, formaldehyde are that 0.01kg, APG1214 are 0.5kg, and water is 98.95kg.
Embodiment 5: embodiment 5 is basic identical with embodiment 1, and difference is: take by weighing raw material by following weight percent: the SUN biological enzyme is that 0.3kg, SUN-B4 are that 0.02kg, formaldehyde are that 0.01kg, APG1214 are 0.5kg, and water is 99.17kg.
SUN biological enzyme in above-described embodiment, polycarboxylic acid Scale inhibitors and protein kinase activator are available from Qingdao flourishing age Petroleum Technology Co., Ltd, and unit address: municipalization Hai Zhen in Qingdao of Shandong province Jiangzhou contains good fortune residential quarter, postcode 266318.APG1214 is available from Nanjing card Neil science and technology limited Company, unit address: coil No. 171, road of Nanjing dragon, postcode 210042.
Polycarboxylic acid Scale inhibitors in above-described embodiment can also be other anti-scale inhibitor; Described protein kinase activator can also be other zymoexciter.
Any one oil-displacing agent among the embodiment of the invention 1-5 adopts rotation ultra low interfacial tension instrument and conventional core flooding method and microorganism oil-displacing agent to compare test, and experimental result is seen Fig. 1-3.As can be seen from the figure, oil-displacing agent of the present invention has lower oil water interfacial tension in higher salinity and high-calcium ionic content solution, can improve recovery ratio more than 15%.
Oil-displacing agent of the present invention has solved the production difficult problem of highly mineralized formation brines and extra-low permeability oil reservoirs raising oil recovery factor, has improved the extra permeability oilfield development effectiveness, and ﹠ Application on Oil Recovery of the same type is used fine directive significance.This oil-displacing agent prescription carries out verification experimental verification in oil recovery factories such as the son length of Yanchang Oilfield, apricot river, tile kiln forts, behind the long oil recovery factory of the son old careless gulf field conduct, the 0.79t of average individual well day produce oil before by test rises to 2.15t, the individual well daily oil production has been turned over 3 times nearly, composite water cut 78.57% drops to 59.22% before by test, has moisturely reduced by 19.35%.Up to the present, using this oil-displacing agent prescription carries out test in place and totally increases more than the oily 42000t.
Claims (4)
1. an extra permeability oilfield improves the biological activity oil-displacing agent that recovery ratio is used, it is characterized in that: comprising: it is formulated by following weight percent by following component: the SUN biological enzyme is that 0.3-0.5%, SUN-B4 are that 0.02-0.04%, formaldehyde are that 0.01-0.02%, APG1214 are 0.3-0.5%, and surplus is water; Described APG1214 is alkyl glycoside; Described SUN-B4 is mixed into by 15: 5: 80 weight ratios by anti-scale inhibitor, zymoexciter and water; Described anti-scale inhibitor is the polycarboxylic acid Scale inhibitors; Described zymoexciter is protein kinase activator.
2. a kind of extra permeability oilfield according to claim 1 improves the biological activity oil-displacing agent that recovery ratio is used, it is characterized in that: it is formulated by following weight percent by following component: the SUN biological enzyme is 0.5%, SUN-B4 is 0.04%, formaldehyde is 0.01%, APG1214 is 0.5%, and surplus is water.
3. a kind of extra permeability oilfield according to claim 1 improves the biological activity oil-displacing agent that recovery ratio is used, and it is characterized in that: described APG1214 is alkyl glycoside; Described SUN biological enzyme oil displacement agent is to form with the multiple biological compound that enzyme is taken as the leading factor, and its main component is: protein-prozyme NOYEES, composite bio-active thing BIO-A, bio-active substance BIO-P, alienation bacterium, natural biological extract.
4. a kind of extra permeability oilfield according to claim 1 improves the blending process of the biological activity oil-displacing agent that recovery ratio uses and is: take by weighing raw material by following weight percent: the SUN biological enzyme is 0.3-0.5% as 0.02-0.04%, formaldehyde as 0.01-0.02%, APG1214 as 0.3-0.5%, SUN-B4, and surplus is water; At normal temperatures, inject first the water dissolution SUN biological enzyme of above-mentioned weight, SUN-B4 and the formaldehyde of the above-mentioned weight of rear adding that stirs after fully mixing, are stirring the APG1214 that continues to add above-mentioned weight in the situation ceaselessly, wait stir fully after, get final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110115405 CN102220117B (en) | 2011-05-05 | 2011-05-05 | Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields |
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| CN 201110115405 CN102220117B (en) | 2011-05-05 | 2011-05-05 | Bioactivity oil displacement agent for improving recovery ratio in ultra-low permeability oilfields |
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| CN102220117B true CN102220117B (en) | 2013-03-06 |
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| CN103614130A (en) * | 2013-12-04 | 2014-03-05 | 北京安镁瑞普环保技术开发有限公司 | Bioenzyme preparation |
| CN109825272A (en) * | 2019-04-10 | 2019-05-31 | 苏州泽方新能源技术有限公司 | Biological enzyme oil displacement agent suitable for crude oil acquisition |
| CN116355603B (en) * | 2023-03-21 | 2024-04-16 | 陕西延长石油（集团）有限责任公司 | Non-ultralow interfacial tension oil displacement agent for improving recovery ratio of low-permeability oil reservoir as well as preparation method and application thereof |
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| CN1315979C (en) * | 2005-06-30 | 2007-05-16 | 大庆沃太斯化工有限公司 | Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method |
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