CN108219765A - A kind of reservoir endogenous micro-organisms activator and its flooding method based on inorganic salts - Google Patents
A kind of reservoir endogenous micro-organisms activator and its flooding method based on inorganic salts Download PDFInfo
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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
- C09K8/582—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 bacteria
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- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Abstract
A kind of reservoir endogenous micro-organisms activator and its displacement of reservoir oil side based on inorganic salts.Belong to displacement of reservoir oil field.Present invention aims at provide a kind of to have the characteristics that activation reservoir endogenous micro-organisms activator efficient, of low cost.By the method for the present invention, activate reservoir endogenous micro-organisms and then improve oil recovery.Activator includes NaCl, KH2PO4、Na2HPO4、MgSO4·7H2O、NH4NO3、NaAc、MnCl2And Tween 80, it is allocated with water, pH value is 7~8.The method of the present invention：Water drive or postpolymer flood inject above-mentioned activator, and 45 DEG C keep the temperature 15 days.By the way that oil pool microorganisms is activated to reduce viscosity of crude come heavy component in degrading crude oil, enhance crude oil flow ability, or the products such as biogas, biosurfactant are metabolized out, achieve the purpose that further improve oil recovery factor, can be applied to after water drive and postpolymerflooded reservoirs.
Description
Technical field
The invention belongs to displacement of reservoir oil fields, and in particular to a kind of reservoir endogenous micro-organisms activator based on inorganic salts and its
Flooding method.
Background technology
Nineteen twenty-six American scholar Beckman proposes that bacterium is advantageously possible for the production of oil, because of their metabolite
The oil in geological structure can be helped to discharge and migrate.By the development in a nearly century, have multiple countries and carried out correlation
Research and field test.Compared with chemical displacement of reservoir oil technology, this technology have it is at low cost, strong to oil reservoir conformability, do not pollute
Environment and the advantages that do not injure stratum.
Microorganism improves oil recovery and is broadly divided into two kinds, first, by the microbial inoculum of surface separation culture and nutrition
Liquid injects oil reservoir, and referred to as inoculating microbe recovers the oil；Second is that microorganism in injection nutrient solution activation oil reservoir, makes it be grown in oil reservoir
Breeding generates the metabolite for being conducive to improve recovery ratio, and to improve the method for oil recovery rate, referred to as endogenous microbes are adopted
Oil.
Oil reservoir is that closed system is mainly anaerobic environment before not developing, wherein may have rare ancient bacterium etc., is being developed
Big open system is formd afterwards, and during oil field long-term injecting water is developed, injection water band injects a certain amount of microorganism to oil
Environment is hidden, most of microorganism is dead when being not suitable with underground high temperature, high pressure and high salinity condition, but a small number of microorganisms can be with
It is resistant to this environment and survives, relatively stable microbiologic population is gradually formed in oil reservoir and is known as endogenous microbes.
The endogenous microbes displacement of reservoir oil is that oxygen and nitrogen, phosphorus nutrition substance are periodically injected into during water flooding recovery crude oil,
Activate a kind of oil recovery technique of original microorganism in oil reservoir.Endogenous microbes technology directly utilizes the effective microorganisms in oil reservoir
It falls, avoids external source spawn degeneration, the adaptability of oil reservoir environment, environmental protection, pollution and the negative effect caused by oil recovery effect.It saves
Go strain fermentation with the expense transported, inexpensively, the term of validity is long；Operating cost is greatly reduced, therefore the technology has significantly
Field application advantage.
Endogenous microbes oil recovery technique will obtain good result it may first have to oil reservoir although simple for process, at low cost
Endogenous microbes composition is understood in depth, and side is it is possible that designing, filtering out effective nutritional agents on this basis；Secondly it should select
Suitable nutritional agents excites its bioactivity to promote the growth and breeding of useful microbiologic population；Also, before nutritional agents is injected
There should be effective, perfect detection and analysis means to carry out follow-up investigation afterwards.Therefore, difficulty is larger, and the period is longer.
It should avoid activation sulfate reducing bacteria (SRB) as far as possible in endogenous microbial oil displacement design of field operations or not make
Growth situation is more than stratum beneficial to endogenous bacterium.Sulfate reducing bacteria can be metabolized under appropriate conditions generates H2The corrosion such as S
Property gas, can be acidified crude oil and underground gas, lead to the corrosion of field pipes and equipment, can also be with the Fe in water flooding2+It is formed
FeS is precipitated, and is led to the non-selective blocking on stratum, is influenced the raising of recovery ratio.
Therefore, it is different to be based on the required nutrients of more than endogenous microbes technology of reservoir sweep different bacterium, Different Nutrition object
The effect for cultivating same bacterium is also different.The preparation of nutrients is mainly determined according to formation condition, nutritional ingredient and expense.
Invention content
Present invention aims at provide a kind of to have the characteristics that activation reservoir endogenous micro-organisms efficient, of low cost activate
Agent.
By the method for the present invention, activate reservoir endogenous micro-organisms and then improve oil recovery.
In order to solve the above technical problems, the reservoir endogenous micro-organisms activator based on inorganic salts of the present invention is including following
Component：NaCl、KH2PO4、Na2HPO4、MgSO4·7H2O、NH4NO3、NaAc、MnCl2And Tween 80, it is allocated with water, pH value 7
~8.
Wherein, in the activator NaCl a concentration of 1~5g/l, KH2PO4A concentration of 0.8~1g/l, Na2HPO4's
A concentration of 0.8~1g/l, MgSO4·7H2A concentration of 0.1~the 0.2g/l, NH of O4NO3A concentration of 1.0~1.5g/l, NaAc
A concentration of 0.8~1.2g/l, MnCl2A concentration of 0.01~0.05g/l, a concentration of 0.8~1.0g/l of Tween 80.
It is preferred that：A concentration of 3g/l, KH of NaCl in the activator2PO4A concentration of 1g/l, Na2HPO4It is a concentration of
0.8g/l, MgSO4·7H2A concentration of 0.15g/l, NH of O4NO3A concentration of 1.0g/l, a concentration of 1.2g/l, MnCl of NaAc2
A concentration of 0.01g/l, a concentration of 0.9g/l of Tween 80.
When microorganism concn total in water flooding is less than 103During a/ml, the reservoir endogenous micro-organisms activation based on inorganic salts
Agent further includes the dusty yeast of a concentration of 0.5~1.0g/l.
The flooding method of the above-mentioned reservoir endogenous micro-organisms activator based on inorganic salts is：Water drive or postpolymer flood
Above-mentioned activator is injected, 45 DEG C keep the temperature 15 days.
The polymer molecular weight of the polymer flooding process is 1600-1900 ten thousand, (45 DEG C) of viscosity for 30~
50mPa.s, such as partially hydrolyzed polyacrylamide (PHPA) dry powder, the polyacrylamide dry powder containing function monomer or other novel displacement of reservoir oils are used
Polymer.
The injection rate of activator is 0.3PV.
During polymer flooding, polymer solution dosage 0.05PV.
The present invention have the characteristics that it is efficient, of low cost, orientation activate, it is environmentally protective, by activate oil pool microorganisms come
Heavy component reduces viscosity of crude in degrading crude oil, enhances crude oil flow ability or is metabolized out biogas, biosurfactant
Products are waited, achieve the purpose that further improve oil recovery factor, can be applied to after water drive and postpolymerflooded reservoirs.
Description of the drawings
Fig. 1 shows total bacterium analysis result in activator formulation optimization Orthogonal Experiment and Design；
Fig. 2 shows activator formulation optimization Orthogonal Experiment and Design Crude Oil Viscosity Analysis result；
Fig. 3 shows activation endogenous microbes physical contradictions effect curve (core numbers B72-9) after water drive；
Fig. 4 shows postpolymer flood activation endogenous microbes physical contradictions effect curve (core numbers
B1706023-2)。
Specific embodiment
Specific embodiment one：The reservoir endogenous micro-organisms activator based on inorganic salts of the present invention includes following groups
Point：NaCl、KH2PO4、Na2HPO4、MgSO4·7H2O、NH4NO3、NaAc、MnCl2And Tween 80, allocated with water, pH value for 7~
8；
Wherein, in the activator NaCl a concentration of 3g/l, KH2PO4A concentration of 1g/l, Na2HPO4It is a concentration of
0.8g/l, MgSO4·7H2A concentration of 0.15g/l, NH of O4NO3A concentration of 1.0g/l, a concentration of 1.2g/l, MnCl of NaAc2
A concentration of 0.01g/l, a concentration of 0.9g/l of Tween 80.
When microorganism concn total in water flooding is less than 103During a/ml, the reservoir endogenous micro-organisms activation based on inorganic salts
Agent further includes the dusty yeast of a concentration of 0.5g/l.
The flooding method of the above-mentioned reservoir endogenous micro-organisms activator based on inorganic salts is：Postpolymer flood injects this reality
The activator described in mode is applied, the injection rate of activator is 0.3PV, and 45 DEG C keep the temperature 15 days.
The polymer molecular weight of the polymer flooding process is ten thousand partially hydrolyzed polyacrylamide (PHPA) dry powder of 1600-1900.
During polymer flooding, polymer solution dosage 0.05PV.
Using following verification experimental verification invention effects：
1 experiment material and method
1.1 major experimental instruments：
Centrifuge, concussion and cultivate case, constant-temperature table, spectrophotometer, rheometer, physical contradictions instrument etc.
1.2 major experimental materials：
Experimental drug：NaCl、KH2PO4、Na2HPO4、MgSO4·7H2O、NH4NO3、NaAc、MnCl2, Tween 80 etc..
Activator：A concentration of 3g/l, KH of NaCl2PO4Concentration 1g/l, Na2HPO4Concentration 0.8g/l, MgSO4·
7H2Concentration 0.15g/l, NH of O4NO3Concentration 1.0g/l, NaA c concentration 1.2g/l, MnCl2Concentration 0.01g/l, tween
80 concentration 0.9g/l debugs pH7-8, sterilizes 20 minutes under the conditions of 121 DEG C, to be cooled to room temperature.Add when investigating activation effect
Enter crude oil 100g/l, well mouth of oil well recovered water 20g/l.If total bacteria concentration is less than 10 in water flooding3A/ml, in the medium also
Add in 0.5g/l dusty yeasts.
Crude oil：Daqing oil field four factory's multi-purpose station dewatered oils (apricot three) of oil recovery.
Water flooding：Daqing oil field oil recovery four Chang Xing, tri- area's well mouth of oil well recovered waters, mineral composition NaCl:2794mg/
L、KCl:513mg/L、CaCl2:42mg/L、MgCl2·6H2O：172mg/L、Na2SO4：75mg/L、NaHCO3：It is 2360mg/L, total
Salt content 5956mg/L, pH value 8.52.1.3 microbial community in oil reservoir form analysis
1) it samples：From recovering the oil out, well head collects water sample；
2) microbiologic population forms analysis：A kind of is that the endogenous microbes in sample are trained using commercialization test bottle
Support and observation, Main Analysis hydrocarbon oxidizing bacteria (HOB), saprophytic bacteria (TGB), anaerobic fermentation bacterium (FMB), sulfate reducing bacteria (SRB),
Six class flora of nitrate reduction bacterium (NRB) and methanogen (MPB)；Another kind is the molecular ecology method of based on PCR, is utilized
Terminal restriction endonuclease bamhi length polymorphism (Terminal Restriction Fragment Length
Polymorphism, TRFLP) various biological community structures in analytical oil reservoir.
1.4 activation reservoir endogenous micro-organisms activation agent prescriptions are preferred
All it is by " being taken with quantity no matter it has an effect microorganism under field conditions (factors) or under the conditions of artificial
Victory ", the presence of only a certain number of functional microorganism groups, the effect of the competence exertion displacement of reservoir oil.This experiment is endogenous by investigating
Number of viable after microorganism activation optimizes formula.Several pieces will be divided into from the water sample for well head collection of recovering the oil out, based on oil
Be conducive to bacterium and ancient bacterium composition, the growth characteristics and metabolism correlation of the displacement of reservoir oil in Tibetan, with reference to water flooding Minerals composition analysis
As a result and relatively low cost structure, the medium component of various concentration is added in the water sample (water flooding) collected in producing well, just
Hand over experiment (using mixed-level table editing machine design) Optimal Medium form (table 1), temperature for 45 DEG C, rotating speed 120~
130rpm adds in 10% crude oil, and after shaken cultivation 15d, analysis rheological characteristic of crude oil, oil water interfacial tension and emulsifying effectiveness use quotient
Industry test bottle compares and analyzes the microorganism in sample, not add activator water sample as control.
Using mixed-level table editing machine, activator formulation optimization Orthogonal Experiment and Design is shown in Table 1 (unit：g/l).
1 activator formulation optimization Orthogonal Experiment and Design (unit of table：g/l)
The measure of 1.5 viscosity of crude
By the sample water-oil separating after cultivating 15 days, crude oil is put into centrifuge tube, the 12000rpm centrifugations 20 in centrifuge
After minute, it is put into refrigerator and at least freezes 2 hours, take crude oil viscosimetric.With the micro- life of rotary viscosity measuring crude oil of HAAKE companies
Rheological characteristic before and after object effect, shear rate measurement range are 0.01~3000S-1, shear rate is continuously changed using on-line mode.
Take shear rate 7.34S-1When viscosity compare.
1.6 activation reservoir endogenous micro-organisms physical contradictions
Using permeability 300md or so Berea core, experiment is Daqing oil field four factory's multi-purpose station dewatered oils of oil recovery with oil
The simulation oil of Air Canada's sky kerosene cutback, viscosity 10.0mPa.s (45 DEG C), experimental water are the simulated formation of total salt content 5956
Water.After evacuation, saturated water, saturated oils, water drive is replaced to after aqueous 98%, carries out the experiment of two classes：
First, injection activator 0.3PV, 45 DEG C keep the temperature 15 days, and water drive to aqueous 98% calculates endogenous on the basis of water drive
Microbial oil displacement improves recovery ratio；
Second is that after water drive, polymer solution (polymer molecular weight 1600-1900 ten thousand, the viscosity of 0.5PV pore volumes are injected
30mPa.s, 45 DEG C), to aqueous development polymer flooding after subsequent waterflooding, injection activator 0.3PV, 45 DEG C keep the temperature 15 days, water
Be driven to aqueous 98%, reinject 0.05PV viscosity be 50mPa.s polymer solution (polymer molecular weight 1600-1900 ten thousand, 45
DEG C), injection activator 0.3PV, 45 DEG C keep the temperature 15 days, and water drive to aqueous 98% calculates endogenous micro- on the basis of polymer flooding
The biological displacement of reservoir oil improves recovery ratio.
2 results and discussion：
2.1 microbial community in oil reservoir form analysis
It is the premise for carrying out the displacement of reservoir oil using microorganism that analysis, which is grasped and formed there are the microorganism in oil reservoir,.It is surveyed using commercialization
Trial jar is cultivated and is observed to the endogenous microbes in four Chang Xing of Daqing oil field oil recovery, tri- area's well mouth of oil well extraction water samples, as a result
It is shown in Table 2.It produces in water sample containing abundant endogenous microbes, has activation condition, wherein containing with hydrocarbon oxidizing bacteria, nitrate reduction bacterium
Highest is measured, and containing a certain number of sulfate reducing bacterias, should be inhibited in activator by adding Nitrates inorganic salts
Sulfate reducing bacteria.
Endogenous microbes quantity (a/mL) in 2 water dependent well Produced Liquid of table
Terminal restriction endonuclease bamhi length polymorphism (Terminal Restriction Fragment Length
Polymorphism, TRFLP) analysis method the result shows that, according to biological classification, main following several microorganisms：
(1) δ-mycetozoan
This quasi-microorganism is mainly the bacterium that Pelobacter and Syntrophus belongs to.Wherein Syntrophus sp. are long
Alkane can be resolved into acetic acid and H by the degradation flora of alkane in the case of anaerobism2, it is that one kind important in alkane degradation is micro-
Biology.Pelobacter carbinolicus are then a kind of sulfate reducing bacterias, can be by the use of simple substance S or Fe (III) as only
One electron acceptor, and acetate, formates or H can be utilized2It is metabolized under anaerobic.
(2) γ-mycetozoan
This kind of bacterium is distributed more complicated, predominantly micro- life of pseudomonas (Pseudomonas) in reservoir media
Object.This kind of bacterium is widely present in oil reservoir, also in soil contaminated by crude oil and water body.Wherein Pseudomonas aeruginosa energy
Bio-surface active rhamnolipid is generated, the rate of alkane degradation can be improved.Also with Shewanella putrefaciens phases
Like the very high bacterium of property, Fe (III), the H that simultaneous oxidation comes out from petroleum hydrocarbon oxidizing can be restored under anaerobic2。
(3) firmicutes
The predominantly bacterium nearest with the affiliation of Dehalobacterium formicoaceticum,
Dehalobacterium formicoaceticum are production acetic acid bacterias, can be by dichloromethane in strictly anaerobic environment
(dichloromethane) fermentation becomes formates and acetate.
(4) ε-mycetozoan
Microorganism in ε-proteus subclass is common microorganism in microbial community in oil reservoir.In a few class oil reservoirs
In there is this quasi-microorganism.This quasi-microorganism can be supplied by the use of sulfide, elemental sulfur, sodium thiosulfate and hydrogen as electronics
Body by the use of nitrate as electron acceptor, carries out energetic supersession under anaerobic.Belong to the micro- of ε-proteus subclass
Biology further include the bacterium (99%) nearer with Arcobacter sp. affiliations and in oil reservoir or in relevant environment it is wide
A general existing quasi-microorganism, this quasi-microorganism can have the function of to nitrify and produce acetic acid, have to organic metabolism in oil reservoir
Important role.
(5) methanogen
Coccus mesh (Methanosarcinales) is folded with methane germ mesh (Methanomicrobiales) and methane.In
Methane hair on the neck Cordycepps (Methanosaetaceae), based on the ancient bacterium such as sarcina methanica section (Methanosarcinaceae),
A quasi-microorganism of methane gas is mainly generated using bacterial degradation product as substrate.
(6) it is not cultivated in oil reservoir, the novel bacteria of species inquirendae
The novel bacteria for not determining that the forefathers of classification position do not cultivate is found that in bacterial clone library.Since oil reservoir is one
Kind extreme environment, the growth metabolism of microorganism wherein is extremely special, therefore they are difficult to be cultured in the lab.It will
Understand the metabolic condition of this quasi-microorganism, also need to carry out in-depth study, for example its culture property is improved by improving condition of culture,
So as to obtain pure culture, Physiology and biochemistry and functional study are carried out.
2.2 activation reservoir endogenous micro-organisms activation agent prescriptions are preferred
Optimization of orthogonal test culture medium experimental result is shown in Table 3.Six classes of 19 groups of (containing blank control) experiments are analyzed respectively
Bacterium variation, viscosity of crude, grease appearance emulsifying effectiveness etc..Before and after the activation from the point of view of the variation of all kinds of bacterium, total bacteria concentration obtain compared with
Big raising, hydrocarbon oxidizing bacteria especially relevant with the displacement of reservoir oil, nitrate reduction bacterium number amount are significantly increased, and methanogen quantity increases
Amplitude is smaller, and mainly since incubation time is short, the product amount that surfactant hydrocarbon degradation bacteria generates also is not enough to that methanogen is activated largely to give birth to
It is long；Activator effectively inhibits the growth and breeding of sulfate reducing bacteria, such bacterium number amount while nitrate reduction bacterium is activated
Substantially it is steady.
3 activator formulation optimization orthogonal experiments of table
Because flora type is more in activation, performance indicator is complicated, therefore, to positive quadraturing design test result range analysis
In the process, the total bacterium of selective analysis and viscosity of crude change two indexs.From the point of view of range analysis result, NaCl is to total bacterium and original
Oil viscosity influences maximum, is secondly MgSO4·7H2O、NH4NO3Third two kinds of inorganic salts are Tween 80s, other three kinds of substances
Influence comes finally.It is final to determine that activation agent prescription is with reference to financial cost：NaCl3g/l、KH2PO41g/l、Na2HPO4
0.8g/l、MgSO4·7H2O 0.15g/l、NH4NO3 1.0g/l、NaA 1.2g/l、MnCl20.01g/l, Tween 80 0.9g/l.
4 activator formulation optimization Orthogonal Experiment and Design of table-total bacterium analytical table
5 activator formulation optimization Orthogonal Experiment and Design of table-viscosity of crude analytical table
Fig. 1 shows total bacterium analysis result in activator formulation optimization Orthogonal Experiment and Design, it can be seen that NaCl is to total bacterium shadow
Very poor maximum is rung, is secondly MgSO4·7H2O、NH4NO3、Na2HPO4And Tween 80, KH2PO4It is influenced minimum (table 4) with NaAc.
Fig. 2 shows activator formulation optimization Orthogonal Experiment and Design Crude Oil Viscosity Analysis result, it can be seen that NaCl is to total
Bacterium influences very poor maximum, is secondly MgSO4·7H2O、NH4NO3, NaAc and Tween 80, Na2HPO4And KH2PO4Two kinds of inorganic salts shadows
Ring minimum (table 5).
2.3 activation endogenous microbes physical contradictions
Two class oil displacement experiments carry out 3 rock cores respectively, have preferable effect repeatability.Endogenous microbes are activated after water drive
Physical contradictions averagely improve 10.3 percentage points of recovery ratio, and postpolymer flood activation endogenous microbes physical analogy is driven
Oily empirical average improves 5.3 percentage points of recovery ratio.Oil displacement experiment result shows that the activation agent prescription of invention and flooding method can
Applied to oil recovery factor, and desirable preferable effect is further improved after water drive with postpolymer flood, there is preferably application
Potentiality.
Table 6 activates endogenous microbes to drive logistics organizations table
Above experiment activates agent prescription for the activation reservoir endogenous micro-organisms for the features such as optimization is efficient, of low cost,
Optimization is carried out to activation agent prescription using orthogonal experiment design, using commercialization test bottle and molecular ecology method point
Analysed reservoir endogenous micro-organisms form and activation before and after endogenous microbes variation, using rheometer to activation endogenous microbes before
Viscosity of crude variation afterwards is tested comparative analysis, and it is maximum to determine that NaCl influences total bacterium and viscosity of crude, is secondly
MgSO4·7H2O、NH4NO3Two kinds of inorganic salts, it is final to determine activation agent prescription.
By the way of physical simulation flooding test, examine respectively activation agent prescription after water drive and it is poly- drive after activate it is endogenous micro-
Biological oil displacement efficiency.The result shows that endogenous microbes physical contradictions is activated averagely to improve recovery ratio 10.3 after water drive
Percentage point, postpolymer flood activation endogenous microbes physical contradictions averagely improve 5.3 percentage points of recovery ratio.Hair
Bright activation agent prescription and flooding method can be applied to after water drive and postpolymer flood further improves oil recovery factor, and have
Excellent effect.
Fig. 3 shows activation endogenous microbes physical contradictions effect curve (core numbers B72-9) after water drive,
It can be seen that microorganism drive can improve aqueous decline, oil recovery factor after water drive, recovery ratio improves 10.3 percentage points,
With preferable oil displacement efficiency；
Fig. 4 shows postpolymer flood activation endogenous microbes physical contradictions effect curve (core numbers
B1706023-2).It can be seen that microorganism drive can improve aqueous decline, oil recovery factor after poly- drive, recovery ratio improves
It 5.8 percentage points, can be as the technology that recovery ratio is further improved after poly- drive.
Claims (10)
1. a kind of reservoir endogenous micro-organisms activator based on inorganic salts, it is characterised in that the activator includes following groups
Point：NaCl、KH2PO4、Na2HPO4、MgSO4·7H2O、NH4NO3、NaAc、MnCl2And Tween 80, allocated with water, pH value for 7~
8。
A kind of 2. reservoir endogenous micro-organisms activator based on inorganic salts according to claim 1, it is characterised in that institute
State a concentration of 1~5g/l, KH of NaCl in activator2PO4A concentration of 0.8~1g/l, Na2HPO4A concentration of 0.8~1g/
L, MgSO4·7H2A concentration of 0.1~the 0.2g/l, NH of O4NO3A concentration of 1.0~1.5g/l, NaAc a concentration of 0.8~
1.2g/l, MnCl2A concentration of 0.01~0.05g/l, a concentration of 0.8~1.0g/l of Tween 80.
A kind of 3. reservoir endogenous micro-organisms activator based on inorganic salts according to claim 1, it is characterised in that institute
State a concentration of 3g/l, KH of NaCl in activator2PO4A concentration of 1g/l, Na2HPO4A concentration of 0.8g/l, MgSO4·7H2O
A concentration of 0.15g/l, NH4NO3A concentration of 1.0g/l, a concentration of 1.2g/l, MnCl of NaAc2A concentration of 0.01g/l,
A concentration of 0.9g/l of Tween 80.
4. a kind of reservoir endogenous micro-organisms activator based on inorganic salts according to Claims 2 or 3, it is characterised in that
The activator further includes the dusty yeast of a concentration of 0.5~1.0g/l.
5. a kind of reservoir endogenous micro-organisms activator based on inorganic salts according to Claims 2 or 3, it is characterised in that
The activator further includes the dusty yeast of a concentration of 0.5g/l.
6. a kind of flooding method of reservoir endogenous micro-organisms activator based on inorganic salts as described in claim 1, special
Sign is：Postpolymer flood injects activator described in claim 1, and 45 DEG C keep the temperature 15 days.
7. a kind of flooding method of reservoir endogenous micro-organisms activator based on inorganic salts according to claim 6,
The polymer molecular weight for being characterized in that water drive or polymer flooding process is 1600-1900 ten thousand, (45 DEG C) of viscosity for 30~
50mPa.s。
8. a kind of flooding method of reservoir endogenous micro-organisms activator based on inorganic salts according to claim 7,
It is partially hydrolyzed polyacrylamide (PHPA) dry powder or the polyacrylamide dry powder containing function monomer to be characterized in that polymer.
9. a kind of flooding method of reservoir endogenous micro-organisms activator based on inorganic salts according to claim 6,
The injection rate for being characterized in that activator is 0.3PV.
10. a kind of flooding method of reservoir endogenous micro-organisms activator based on inorganic salts according to claim 6,
It is characterized in that polymer solution dosage 0.05PV.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358157A (en) * | 2018-09-29 | 2019-02-19 | 陕西延长石油(集团)有限责任公司研究院 | CO2The screening of the endogenous microbes activator of oil reservoirs and activation effect evaluation method and application |
| CN112576229A (en) * | 2020-12-11 | 2021-03-30 | 大庆油田有限责任公司 | Method for producing methane from underground crude oil by utilizing microbial action |
| CN116285927A (en) * | 2023-03-28 | 2023-06-23 | 华东理工大学 | Method for improving metabolism activity of microorganisms in thickened oil and application |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205460A (en) * | 2006-12-20 | 2008-06-25 | 天津市工业微生物研究所 | Microorganisms agent active protecting agent used for microorganism oil extraction of high-salinity oil well |
| CN101880630A (en) * | 2009-12-21 | 2010-11-10 | 路域生态工程有限公司 | Method for increasing oil recovery ratio by utilizing symbiotic reproduction and complex metabolism and microbial preparation |
| CN102213087A (en) * | 2010-04-12 | 2011-10-12 | 北京大学 | Throughout and displacement combined microbial oil recovery method |
| CN102408887A (en) * | 2011-09-09 | 2012-04-11 | 南开大学 | Oil reservoir endogenous microorganism high-efficient activator and effect evaluation method thereof |
| CN102435720A (en) * | 2011-09-09 | 2012-05-02 | 南开大学 | Method for screening high efficiency activator of oil reservoir indigenous microbes |
| CN102559194A (en) * | 2010-12-09 | 2012-07-11 | 大庆油田有限责任公司 | Method for controlling process of degrading crude oil by microbes for oil extraction and application of method |
| CN102559165A (en) * | 2010-12-09 | 2012-07-11 | 大庆油田有限责任公司 | Oil recovery bacterium crude oil tending condition control method and applications thereof |
| CN102852499A (en) * | 2012-09-28 | 2013-01-02 | 天津亿利科能源科技发展股份有限公司 | Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir |
| CN103147731A (en) * | 2013-03-25 | 2013-06-12 | 北京大学 | Method for enhancing crude oil recovery ratio |
| CN104087534A (en) * | 2013-07-09 | 2014-10-08 | 中国石油天然气股份有限公司 | Activator for activating endogenous microbial oil displacement in polymer-displaced oil reservoir |
| CN104152394A (en) * | 2014-06-29 | 2014-11-19 | 北京大学工学院包头研究院 | Method for directionally activating microorganisms with oil recovery functions in crude oil |
| CN104212431A (en) * | 2014-06-29 | 2014-12-17 | 北京大学工学院包头研究院 | Petroleum endogenous microbe activating system, and screening method and application thereof |
| CN104405340A (en) * | 2014-10-27 | 2015-03-11 | 中国石油化工股份有限公司 | Polymer flooding oil reservoir microbial plugging removal method |
| CN104404086A (en) * | 2014-10-27 | 2015-03-11 | 中国石油化工股份有限公司 | Method for regulating and controlling oil-reservoir microbe metabolism for producing biogas |
| CN104609547A (en) * | 2015-01-27 | 2015-05-13 | 唐山中科格润环境技术有限公司 | Medicament for improving anaerobe activity |
| CN105201472A (en) * | 2015-09-28 | 2015-12-30 | 中国石油化工股份有限公司 | Oil deposit stratal microflora regulation and control method |
| CN105255988A (en) * | 2015-10-23 | 2016-01-20 | 中国石油化工股份有限公司 | Screening method of microorganism long-acting activating agent for oil extraction |
-
2018
- 2018-01-11 CN CN201810025801.1A patent/CN108219765A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205460A (en) * | 2006-12-20 | 2008-06-25 | 天津市工业微生物研究所 | Microorganisms agent active protecting agent used for microorganism oil extraction of high-salinity oil well |
| CN101880630A (en) * | 2009-12-21 | 2010-11-10 | 路域生态工程有限公司 | Method for increasing oil recovery ratio by utilizing symbiotic reproduction and complex metabolism and microbial preparation |
| CN102213087A (en) * | 2010-04-12 | 2011-10-12 | 北京大学 | Throughout and displacement combined microbial oil recovery method |
| CN102559194A (en) * | 2010-12-09 | 2012-07-11 | 大庆油田有限责任公司 | Method for controlling process of degrading crude oil by microbes for oil extraction and application of method |
| CN102559165A (en) * | 2010-12-09 | 2012-07-11 | 大庆油田有限责任公司 | Oil recovery bacterium crude oil tending condition control method and applications thereof |
| CN102408887A (en) * | 2011-09-09 | 2012-04-11 | 南开大学 | Oil reservoir endogenous microorganism high-efficient activator and effect evaluation method thereof |
| CN102435720A (en) * | 2011-09-09 | 2012-05-02 | 南开大学 | Method for screening high efficiency activator of oil reservoir indigenous microbes |
| CN102852499A (en) * | 2012-09-28 | 2013-01-02 | 天津亿利科能源科技发展股份有限公司 | Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir |
| CN103147731A (en) * | 2013-03-25 | 2013-06-12 | 北京大学 | Method for enhancing crude oil recovery ratio |
| CN104087534A (en) * | 2013-07-09 | 2014-10-08 | 中国石油天然气股份有限公司 | Activator for activating endogenous microbial oil displacement in polymer-displaced oil reservoir |
| CN104152394A (en) * | 2014-06-29 | 2014-11-19 | 北京大学工学院包头研究院 | Method for directionally activating microorganisms with oil recovery functions in crude oil |
| CN104212431A (en) * | 2014-06-29 | 2014-12-17 | 北京大学工学院包头研究院 | Petroleum endogenous microbe activating system, and screening method and application thereof |
| CN104405340A (en) * | 2014-10-27 | 2015-03-11 | 中国石油化工股份有限公司 | Polymer flooding oil reservoir microbial plugging removal method |
| CN104404086A (en) * | 2014-10-27 | 2015-03-11 | 中国石油化工股份有限公司 | Method for regulating and controlling oil-reservoir microbe metabolism for producing biogas |
| CN104609547A (en) * | 2015-01-27 | 2015-05-13 | 唐山中科格润环境技术有限公司 | Medicament for improving anaerobe activity |
| CN105201472A (en) * | 2015-09-28 | 2015-12-30 | 中国石油化工股份有限公司 | Oil deposit stratal microflora regulation and control method |
| CN105255988A (en) * | 2015-10-23 | 2016-01-20 | 中国石油化工股份有限公司 | Screening method of microorganism long-acting activating agent for oil extraction |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358157A (en) * | 2018-09-29 | 2019-02-19 | 陕西延长石油(集团)有限责任公司研究院 | CO2The screening of the endogenous microbes activator of oil reservoirs and activation effect evaluation method and application |
| CN112576229A (en) * | 2020-12-11 | 2021-03-30 | 大庆油田有限责任公司 | Method for producing methane from underground crude oil by utilizing microbial action |
| 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 |
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