CN102852499B - The method of a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil - Google Patents
The method of a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil Download PDFInfo
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- CN102852499B CN102852499B CN201210367875.6A CN201210367875A CN102852499B CN 102852499 B CN102852499 B CN 102852499B CN 201210367875 A CN201210367875 A CN 201210367875A CN 102852499 B CN102852499 B CN 102852499B
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Abstract
The present invention relates to the method for a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil.The invention belongs to and improve oil recovery factor technical field.A method for the directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in that flooding method comprises the following steps: the hydrocarbon oxidation bacteria 1, activating near wellbore zone: aerobic systems activator is injected near wellbore zone, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic; 2, activate oil deposit deep part anaerobic fermentation bacterium: oil deposit deep part injects anaerobic system activator, directed activation anaerobic fermentation bacterium, and utilize its catabolite activator methanogen to produce gas, improve oil recovery factor by the beneficial metabolic product of microorganism.It is simple that the present invention has technique, and directed activation is easy to operate, with low cost, economic and practical, nontoxic, without nutritional agents waste, applied widely, is beneficial to the advantages such as mining site large-scale application.
Description
Technical field
The invention belongs to and improve oil recovery factor technical field, particularly relate to the method for a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil.
Background technology
Microbial-flooding Technology belongs to tertiary oil recovery technology, refers to activation reservoir endogenous micro-organisms, by improving quantity and the Metabolites Concentration thereof of oil recovery functional microorganism, reaching and improving crude oil fluidity, improve a kind of method of the object of recovery ratio.
Microorganism in oil reservoir is a huge system, is comparatively stable microbiologic population.Have plenty of and enter oil reservoir with injecting water in oilfield development process, also have plenty of and just exist in the reservoir formation process.Some microorganisms are in active period, and some microorganisms are in hibernation.Wherein have a microorganism just part for oil recovery function, how to strengthen the biologically active of this part microorganism, directed its metabolic process of regulation and control, becomes technical barrier.Traditional is also comparatively general microbe oil production method is that activator is injected oil reservoir according to technological design consumption, problems faced is that the microorganism of activation is with certain blindness, oil recovery functional microorganism and non-oil recovery functional microorganism be energy amount reproduction all, medicament is caused to waste in a large number, the problems such as oil displacement efficiency is not obvious.
Summary of the invention
The present invention provides the method for a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil for solving in known technology the technical problem that exists.
The object of the invention is to provide one and has technique simply, directed activation, easy to operate, with low cost, economic and practical, nontoxic, applied widely, is beneficial to the method for the orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil of the features such as mining site large-scale application.
The present invention proposes the method for a kind of orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, the oil recovery functional microorganism of indication be mainly biosurfactant production hydrocarbon oxidation bacteria, produce the anaerobic fermentation bacterium of acid and the methanogen of aerogenesis, nutritional need for various functional microbial is different, utilize dissimilar nutritional agents and Different adding amount, develop special activator, hydrocarbon oxidation bacteria, anaerobic fermentation bacterium and methanogen in directed activation oil reservoir, reach the metabolism of the regulation and control reservoir endogenous micro-organisms that becomes more meticulous, thus improve the target of oil recovery factor to greatest extent.
The present invention selects the oil reservoir be suitable for, and for concrete block, by analyzing the profit character of this block oil reservoir, in conjunction with the nutritional need of different functionalities microorganism, determines aerobic activation systems and anaerobism activation systems two kinds of activator.By the scope of aerobic systems activator injection water injection well Water-drive control radius 5 meters, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic, then anaerobic system activator is injected, directed activation anaerobic fermentation bacterium, and utilize its catabolite activator methanogen to produce gas, improve oil recovery factor by the beneficial metabolic product of these microorganisms.
The technical scheme that the method for the present invention's orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil is taked is:
A method for the directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in: flooding method comprises the following steps:
(1) the hydrocarbon oxidation bacteria of near wellbore zone is activated
Aerobic systems activator is injected near wellbore zone, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic;
(2) oil deposit deep part anaerobic fermentation bacterium is activated
Oil deposit deep part injects anaerobic system activator, directed activation anaerobic fermentation bacterium, and utilizes its catabolite activator methanogen to produce gas, improves oil recovery factor by the beneficial metabolic product of microorganism.
The selection of oil reservoir should meet oil pool microorganisms quantity and be more than or equal to 10/mL, and reservoir temperature is less than or equal to 70 DEG C, and formation water salinity is less than or equal to 100000mg/L, and permeability is more than or equal to 50*10
-3μm
2, connectivity between water and oil wells is good, and injection-production relation is corresponding clear and definite, and producing well hole condition is good, the waterflooding extraction condition of more than 2 years.
The method of the present invention's orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil can also adopt following technical scheme:
The method of the described orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in: consisting of of aerobic systems activator, containing atoleine 0.1 ~ 10%, NaNO in the aqueous solution
31 ~ 20g/L, sodium phosphate trimer 1 ~ 20g/L, microelement nutritious liquid CaCl
20.001 ~ 1g/L, MgSO
40.001 ~ 1g/L, Na
2moO
40.001 ~ 1g/L, MnSO
40.001 ~ 1g/L, FeSO
40.001 ~ 1g/L, lignin 0.001 ~ 1g/L, one or more in pectic substance 0.001 ~ 1g/L.
The method of the described orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in: after directed activation, hydrocarbon oxidation bacteria quantity is increased to 10
7~ 10
8individual/mL.
The method of the described orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in: anaerobic system activator consists of, containing molasses 0.1 ~ 10g/L, NaNO in the aqueous solution
31 ~ 15g/L, sodium phosphate trimer 1 ~ 10g/L, microelement nutritious liquid CaCl
20.001 ~ 1g/L, MgSO
40.001 ~ 1g/L, Na
2moO
40.001 ~ 1g/L, MnSO
40.001 ~ 1g/L, FeSO
40.001 ~ 1g/L, lignin 0.001 ~ 1g/L, one or more in pectic substance 0.001 ~ 1g/L.
The method of the described orientation regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in: after directed activation, anaerobic fermentation bacterium quantity is increased to 10
9~ 10
10individual/mL, produces the gas of 2 ~ 3 times of anaerobic system activator volumes.
The advantage that the present invention has and good effect are:
The method of the directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil is owing to have employed the brand-new technical scheme of the present invention, and compared with prior art, have the mechanism of action clear and definite, design science is reasonable, without advantages such as nutritional agents wastes.Evident characteristic of the present invention is:
1, by directed activation technology, the metabolism of the regulation and control reservoir endogenous micro-organisms that becomes more meticulous, avoids the nutritional agents waste that blindly activating microorganisms causes.
2, the activator injected is with low cost, is beneficial to mining site large-scale application.
3, the activator PH injected, in neutral left and right, can not cause strong corrosion to waterflood-transmission line.
4, inject activator and stratum compatibility good and nontoxic, all can be utilized by microorganism, can not pollute.
Accompanying drawing explanation
Fig. 1 is directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil construction schematic diagram.
In figure, 1-agitator tank, 2-injection pump, 3-waterflood-transmission line.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Embodiment 1
Accompanying drawings 1.Select a certain block in oil field as the block of applicable microbial oil displacement, its basic condition is as follows:
Block overview
| Temperature (DEG C) | Permeability (10 -3μm 2) | Degree of porosity (%) | Injection-production method | Recovery percent of reserves (%) | Comprehensive water cut (%) |
| 60 | 1300 | 30-35 | One note five is adopted | 10.0 | 65 |
Analyze the profit character of this block:
Degassed crude physical data table
Water analysis tables of data
The method of the directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, comprises the following steps:
1. activate the hydrocarbon oxidation bacteria of near wellbore zone: aerobic systems activator is injected near wellbore zone, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic;
2. activate oil deposit deep part anaerobic fermentation bacterium: oil deposit deep part injects anaerobic system activator, directed activation anaerobic fermentation bacterium, and utilize its catabolite activator methanogen to produce gas, improve oil recovery factor by the beneficial metabolic product of microorganism.
According to profit analysis result, aerobic activation systems and anaerobism activation systems two kinds of activator are determined in experiment:
The composition of aerobic systems activator: containing atoleine 2%, NaNO in the aqueous solution
31.5g/L, sodium phosphate trimer 1g/L, microelement nutritious liquid Na
2moO
40.005g/L.
The composition of anaerobic system activator: containing molasses 3g/L, NaNO in the aqueous solution
32g/L, sodium phosphate trimer 1g/L, microelement nutritious liquid MnSO
40.001g/L, FeSO
40.002g/L, lignin 0.02g/L, pectic substance 0.001g/L.
Work progress: mixed with water filling by activator, injects stratum by injection pump by waterflood-transmission line, sees Fig. 1.The scope of aerobic systems activator injection water injection well Water-drive control radius 5 meters, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic, then injects anaerobic system activator, directed activation anaerobic fermentation bacterium, and utilizes its catabolite activator methanogen to produce gas.Through process optimization, inject aerobic systems activator 0.006PV, anaerobic system activator 0.2PV, Production development finds moisture decline, and oil production and gas production increase, and detect that hydrocarbon oxidation bacteria quantity is increased to 10 in production fluid
7individual/mL, anaerobic fermentation bacterium quantity is increased to 10
9individual/mL, proves that the flooding method of a kind of orientation regulation and control reservoir endogenous micro-organisms of the present invention is feasible.
Claims (1)
1. a method for the directed regulation and control reservoir endogenous micro-organisms displacement of reservoir oil, is characterized in that: flooding method comprises the following steps:
(1) the hydrocarbon oxidation bacteria of near wellbore zone is activated
Aerobic systems activator is injected near wellbore zone, the hydrocarbon oxidation bacteria that directed activation near wellbore zone is aerobic;
(2) oil deposit deep part anaerobic fermentation bacterium is activated
Oil deposit deep part injects anaerobic system activator, directed activation anaerobic fermentation bacterium, and utilizes its catabolite activator methanogen to produce gas, improves oil recovery factor by the beneficial metabolic product of microorganism;
Consisting of of aerobic systems activator, containing atoleine 0.1 ~ 10%, NaNO in the aqueous solution
31 ~ 20g/L, sodium phosphate trimer 1 ~ 20g/L, microelement nutritious liquid CaCl
20.001 ~ 1g/L, MgSO
40.001 ~ 1g/L, Na
2moO
40.001 ~ 1g/L, MnSO
40.001 ~ 1g/L, FeSO
40.001 ~ 1g/L, lignin 0.001 ~ 1g/L, one or more in pectic substance 0.001 ~ 1g/L;
After directed activation, hydrocarbon oxidation bacteria quantity is increased to 10
7~ 10
8individual/mL;
Anaerobic system activator consists of, containing molasses 0.1 ~ 10g/L, NaNO in the aqueous solution
31 ~ 15g/L, sodium phosphate trimer 1 ~ 10g/L, microelement nutritious liquid CaCl
20.001 ~ 1g/L, MgSO
40.001 ~ 1g/L, Na
2moO
40.001 ~ 1g/L, MnSO
40.001 ~ 1g/L, FeSO
40.001 ~ 1g/L, lignin 0.001 ~ 1g/L, one or more in pectic substance 0.001 ~ 1g/L;
After directed activation, anaerobic fermentation bacterium quantity is increased to 10
9~ 10
10individual/mL, produces the gas of 2 ~ 3 times of anaerobic system activator volumes.
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| CN103912254B (en) * | 2013-01-09 | 2016-11-16 | 中国石油化工股份有限公司 | A kind of method utilizing compounding activation agent to improve fracturing well capacity |
| CN103628851A (en) * | 2013-06-14 | 2014-03-12 | 中国石油化工股份有限公司 | Method for activating oil reservoir indigenous microorganisms to produce object surface active agents |
| CN104152394B (en) * | 2014-06-29 | 2016-10-19 | 北京大学工学院包头研究院 | A kind of method orienting the functional microorganism that recovers the oil in activation crude oil |
| CN104481476B (en) * | 2014-10-27 | 2017-01-18 | 中国石油化工股份有限公司 | Method for improving oil recovery efficiency through microbial oil displacement |
| CN104695919B (en) * | 2015-02-15 | 2018-02-16 | 南开大学 | A kind of method for selectively activating the main beneficial bacterium of oil reservoir and keeping high concentration |
| CN105221126B (en) * | 2015-10-23 | 2018-04-13 | 中国石油化工股份有限公司 | A kind of regulation and control method for emulsifying displacement of reservoir oil function bacterium oil reservoir origin |
| CN107152266B (en) * | 2016-03-03 | 2020-05-15 | 中国石油化工股份有限公司 | Method for improving biogasification rate of residual oil in oil reservoir and application of method |
| CN108018033B (en) * | 2017-12-04 | 2020-10-23 | 农业部沼气科学研究所 | Preparation and method for improving metabolic activity of endogenous anaerobes in oil reservoir |
| CN108219765A (en) * | 2018-01-11 | 2018-06-29 | 侯岱言 | A kind of reservoir endogenous micro-organisms activator and its flooding method based on inorganic salts |
| CN114427402B (en) * | 2020-09-22 | 2024-02-06 | 中国石油化工股份有限公司 | Method for improving recovery ratio by regulating and controlling microbial oil displacement reservoir |
| CN112576229B (en) * | 2020-12-11 | 2023-01-24 | 大庆油田有限责任公司 | Method for producing methane from underground crude oil by utilizing microbial action |
| CN117363332B (en) * | 2023-12-04 | 2024-02-13 | 胜利星科石油技术开发(山东)有限公司 | Microbial oil extraction and displacement system and preparation method and application thereof |
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