CN110513073A - A kind of activation oil reservoir inside microorganism generates the segmented activator injection mode of plugging action - Google Patents
A kind of activation oil reservoir inside microorganism generates the segmented activator injection mode of plugging action Download PDFInfo
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- CN110513073A CN110513073A CN201910782512.0A CN201910782512A CN110513073A CN 110513073 A CN110513073 A CN 110513073A CN 201910782512 A CN201910782512 A CN 201910782512A CN 110513073 A CN110513073 A CN 110513073A
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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- E—FIXED CONSTRUCTIONS
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention discloses the injection modes that microorganism inside a kind of activation oil reservoir generates the segmented activator of plugging action.The present invention provides segmented activator injection methods, include the following steps: to oil field formation at target locations according to following 1) -4) sequential segment inject the segmented activator being made of following variety classes activator, form principal piece plug: 1) phosphorus source activator；2) nitrogen source activator；3) contain inorganic salts and microelement activator；4) carbon source activator；The present invention injects the activator of different component using segmentation, so that all the components in activator is reached scheduled target position and forms a complete activator system, the successfully activation endogenous functional microorganism of oil reservoir, improve the efficiency that microorganism assembles to closure site, to play effective plugging function, oil recovery factor is improved.
Description
Technical field
The present invention relates to belong to microorganism inside field of biotechnology more particularly to a kind of activation oil reservoir to generate plugging action
Segmented activator injection mode.
Background technique
With the continuous exploitation of petroleum, domestic most of oil reservoir enters the mining phase of high water cut rate.It passes at present
The method that system uses is to select chemical plugging agent to block the water-invaded region inside oil reservoir, however chemical plugging agent price is high
Injection expensive, that effect is unstable and due to chemical substance leads to serious risk of environmental pollution.It is blocked using microorganism and is then had
The features such as effective good, at low cost, environmentally protective is a kind of shutoff method for being worth being widely applied.Specifically, microorganism
It blocks and refers to and will be injected into oil reservoir Thief zone position with the external source functional microorganism and its nutriment that produce polysaccharide, biomembrane,
Functional microorganism is set to form biomembrane and produce polysaccharide, so that reducing reservoir pore rate carries out water blockoff, to improve oil recovery factor.
Currently, microorganism blocking technology there is no being applied well in middle high water-cut reservoir, reason is mainly
Nutritional ingredient in various activator is mixed and is injected.Although operation is convenient in this way, do not account in this way
To absorption, consumption and migration of the various nutritional ingredients in injection process, so that nutrients in activator can not be played efficiently
The effect of matter is that oil pool microorganisms are sufficiently activated and effectively play plugging function.
Summary of the invention
In order to more effectively realize that microorganism blocks, the invention provides the following technical scheme:
The object of the present invention is to provide a kind of segmented activator injection methods.
Segmented activator injection method provided by the invention, includes the following steps: to oil field formation at target locations according to as follows
1) sequential segment -4) injects the segmented activator being made of following variety classes activator, forms principal piece plug:
1) phosphorus source activator；Phosphorus source activator includes following solute: sodium phosphate and hypophosphorous acid are received；
2) nitrogen source activator；The nitrogen source activator includes following solute: glutamate and glutamic acid；
3) contain inorganic salts and microelement activator；Described containing inorganic salts and microelement activator includes following molten
Matter: calcium chloride, magnesium sulfate, ferric sulfate, copper sulphate；
4) carbon source activator；The carbon source activator includes following solute: corn pulp and cornstarch.
Above-mentioned glutamate specifically uses sodium glutamate, company: Beijing Baeyer enlightening biology skill in an embodiment of the present invention
Art Co., Ltd article No.: DE0045.
In the above method, the various activator further include solvent；
The various activator are made of each solute and solvent；
The segmented activator is by phosphorus source activator, the nitrogen source activator, described containing inorganic salts and micro
Element activator and carbon source activator composition.
In the above method, in the various activator each solute the segmented activator mass volume ratio such as
Under:
The sodium phosphate is 0.5% in the quality volumn concentration of the segmented activator,
The quality volumn concentration that the hypophosphorous acid is contained in the segmented activator is 1%；
The glutamate is 0.02% in the quality volumn concentration of the segmented activator；
The glutamic acid is 0.01% in the quality volumn concentration of the segmented activator；
The copper sulphate is 0.006% in the quality volumn concentration of the segmented activator；
The ferric sulfate is 0.03% in the quality volumn concentration of the segmented activator；
The calcium chloride is 0.03% in the quality volumn concentration of the segmented activator；
The magnesium sulfate is 0.03% in the quality volumn concentration of the segmented activator.
The corn starch is 0.3% in the quality volumn concentration of the segmented activator；
The cornstarch is 0.5% in the quality volumn concentration of the segmented activator.
It further include following steps before injecting phosphorus source activator in the above method: the oil field Xiang Suoshu formation at target locations note
Enter clear water and make protective agent, forms preposed attributives.
According to every kind of activator in comprehensive determining (the microbial profile control indoor simulation reality of the consumption on stratum and migration rule
Test) number that every kind of activator accounts for segmented activator total volume V is calculated, it is in an embodiment of the present invention, specific as follows: described
The injection rate of phosphorus source activator is 0.3 times of volume of the segmented activator；The injection rate of the nitrogen source activator is described
0.2 times of volume of segmented activator；The injection rate containing inorganic salts and microelement activator swashs for the segmented
0.2 times of volume of agent living；The injection rate of the carbon source activator is 0.3 times of volume of the segmented activator.
It further include following steps after injecting the carbon source activator in the above method: the oil field Xiang Suoshu formation at target locations note
Enter Produced Liquid and make displacement fluid, is formed and replace slug.
In the above method, the oil field is middle high water cut oil field；
And/or the water content of the middle high water cut oil field is more than or equal to 40%.
Application inside above-mentioned raising oil reservoir in microorganism plugging action is also the scope of protection of the invention.
Another object of the present invention is to provide a kind of product of raising oil reservoir inside microorganism plugging action.
Product provided by the invention, the various activator including independent packaging in above-mentioned method.
It is also the model that the present invention protects that segmented activator injection, which improves the application inside oil reservoir in microorganism plugging action,
It encloses；
The segmented activator injection is the phosphorus source activator being implanted sequentially in the above method, nitrogen source activator, contains
Inorganic salts and microelement activator and carbon source activator.
3rd purpose of the invention is to provide a kind of method of raising oil reservoir inside microorganism plugging action.
Method provided by the invention, including above-mentioned segmented activator injection method are realized and improve microorganism inside oil reservoir
Plugging action.
Microorganism plugging action is embodied in the crude oil water content for reducing the oil reservoir and/or raising inside above-mentioned raising oil reservoir
The oil production of the oil reservoir.
The present invention enables all the components in activator to reach scheduled using the activator of segmentation injection different component
Target position forms a complete activator system, successfully activates the endogenous functional microorganism of oil reservoir, improves microorganism to envelope
The efficiency of stifled position aggregation improves oil recovery factor to play effective plugging function.
Detailed description of the invention
Fig. 1 is that so that Cut of Oilfield is remarkably decreased oil increasing effect significant for segmented activator injection.
Specific embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
The selection criteria (such as table 1) of oil well is according to the standard of microbe oil production in following embodiments, and height contains in simultaneous selection
The oil reservoir of water.
Table 1
A kind of segmented activator injection method in embodiment 1, microbe oil production
One, each component of segmented activator
Segmented activator is made of the activator of following 4 kinds of types:
Nitrogen source activator comprising following solute: 0.02% glutamate (specially sodium glutamate, company: Beijing Baeyer
Enlightening Bioisystech Co., Ltd article No.: DE0045), 0.01% glutamic acid, surplus is water；
Phosphorus source activator comprising following solute: 0.5% sodium phosphate (the upper smooth Science and Technology Co., Ltd.'s article No. of Haitai:
01220500), 1% hypophosphorous acid is received, and surplus is water；
Carbon source activator comprising following solute: 0.3% corn pulp (great wound (Beijing) Bioisystech Co., Ltd, section, army
Article No.: FA0100), 0.5% cornstarch (hundred profit wound biotechnology (Beijing) Co., Ltd article No.s: S11149), surplus is
Water；
Contain inorganic salts and microelement activator comprising following solute: 0.006% copper sulphate, 0.03% ferric sulfate,
0.03% calcium chloride and 0.03% magnesium sulfate, surplus are water；
The percentage of each component is that each component accounts for the quality volume of segmented activator total volume in every kind of activator above
Than unit is g/l.
Every kind of activator is made of each concentration solute and aqueous solvent above；
Two, in segmented activator various activator injection amounts calculating
According to following calculation formula, segmented activator total volume V is calculated.
Segmented activator total volume V and the treatment radius of oil reservoir, effective thickness are related with porosity, effective thickness of oil reservoir
Degree is to have a fixed numerical value for each specific oil reservoir:
V=(pi/2) * r2*h*φ
V-activator total volume, m3
R-treatment radius, m, straight well takes 15 meters, and horizontal well takes 3 meters,；
H-oil reservoir effective thickness, m,
φ-reservoir pore degree, %,
Further according to the quality volumn concentration of each component in every kind of activator in segmented activator total volume V, meter
Calculate the quality of every kind of component in every kind of activator；Determining in the consumption on stratum and migration rule synthesis further according to every kind of activator
(microbial profile control simulating lab test) calculates the number that every kind of activator accounts for segmented activator total volume V, specific as follows:
Phosphorus source activator injection amount is 0.3 times of volume；
Nitrogen source activator injection amount is 0.2 times of volume；
It is 0.2 times of volume containing inorganic salts and microelement activator injection amount；
Carbon source activator injection amount is 0.3 times of volume.
Three, the segmentation injection of activator
The same stratum of activator injection, different component are the different radii position for injecting stratum.
The injection process of activator uses fixed tubular column, will be activated using ground installation (tank car and pump truck) by injection pump
The tubing and casings annular space injection such as agent and protection liquid, entire injection are divided into 3 slugs and are injected in sequence: preposed attributives, principal piece
Plug and replacement slug.Specific injection step is as follows:
1, thorough hot wash is carried out to oil well before construction, keeps dead oil in pit shaft fully erased, until well-flushing qualification.
2, for the ease of construction, be convenient for comparative test effect, test well using not operation, do not rise pump, from casing injection
Mode is constructed.
3, it closes water injection well and fills the water gate, producing well first stops to take out, and turns off production gate.
4, residual pressure in pipeline is vented, pipeline is attached according to operating instruction.
5, each component in activator not of the same race is sufficiently stirred in different Agitation Tanks so that solute respectively
It is uniformly mixed.
6, shaft collar and Agitation Tank gate are opened.
7, pump is opened, with clear water pressure testing, pipeline, which does not pierce, not to be leaked, and injection pressure is steadily qualified.
8, the injection of activator is carried out according to the injecting scheme of following design:
The injection of activator is divided into three slugs and injects in order, preposed attributives, principal piece plug and replacement slug:
1) preposed attributives
First inject 30m3Clear water is as protective agent；Main body slug is protected, anti-channeling and protection main body slug are played；
2) principal piece plug
To stratum being successively segmented the different activator of injection ingredient by filling line, (note: this depth is the depth of oil reservoir
Degree, this depth are each different, and determine target position generally by range is involved)
(1) inject 0.3 times of volume (this volume is comprehensive determining in the consumption on stratum and migration rule according to phosphorus source)
Phosphorus source activator reaches 0.3 times of mileage of target position；
(2) 1 hour of stop followed by injects 0.2 times of volume nitrogen source activator, reaches 0.2 times of mileage of target position；
(3) it does not stop and is then poured into 0.2 times of volume and contains inorganic salts and microelement activator, reach target position
0.2 times of mileage；
(4) it is then poured into 0.3 times of volume carbon source activator, reaches 0.3 times of mileage of target position；
The parameter of the injection of above-mentioned activator:
Injection mode: it is injected by annular space；
Injection rate: injection rate 20-30m3/h；
Injection pressure: according to individual well hydrodynamic face situation, pressure is less than 3Mpa in principle, and it is broken that maximum pressure is not greater than stratum
Split pressure.
3) slug, is replaced
Use 0.7 times of volume Produced Liquid (this Produced Liquid is exactly the water released after water drive from underground) that will swash as displacement fluid
Agent living, which is replaced to stratum depths, reaches purpose water aquifer, effectively activation reservoir endogenous micro-organisms, keeps it largely numerous in high permeable layers band
It grows, can and play the role of water blockoff.
Embodiment 2, segmented activator injection mode activate microorganism inside oil reservoir to generate plugging action
2 mouthfuls of oil wells in certain oil field domestic positioned at the Inner Mongol, belong to common High water cut heavy crude reservoir, using waterflooding extraction,
High water cut fingering phenomenon is serious, specific reservoir information such as the following table 2.
Table 2
One, each component of activator
One, each component of segmented activator
Segmented activator is made of the activator of following 4 kinds of types:
Nitrogen source activator comprising following solute: 0.02% glutamate, 0.01% glutamic acid, surplus are water；
Phosphorus source activator comprising following solute: 0.5% sodium phosphate, 1% hypophosphorous acid are received, and surplus is water；
Carbon source activator comprising following solute: 0.3% corn pulp, 0.5% cornstarch, surplus are water；
Contain inorganic salts and microelement activator comprising following solute: 0.006% copper sulphate, 0.03 ferric sulfate,
0.03% calcium chloride and 0.03% magnesium sulfate, surplus are water；
The percentage of each component is that each component accounts for the quality volume of segmented activator total volume in every kind of activator above
Than unit is g/l.
Two, in segmented activator various activator injection amounts calculating
According to following calculation formula, segmented activator total volume V is calculated.
Segmented activator total volume V and the treatment radius of oil reservoir, effective thickness are related with porosity, effective thickness of oil reservoir
Degree is to have a fixed numerical value for each specific oil reservoir:
V=(pi/2) * r2*h*φ
V-activator total volume, m3
R-treatment radius, m, straight well takes 15 meters, and horizontal well takes 3 meters,；
H-oil reservoir effective thickness, m,
φ-reservoir pore degree, %,
Further according to the quality volumn concentration of each component in every kind of activator in segmented activator total volume V, meter
Calculate the quality of every kind of component in every kind of activator；Determining in the consumption on stratum and migration rule synthesis further according to every kind of activator
(microbial profile control simulating lab test) calculates the number that every kind of activator accounts for segmented activator total volume V, specific as follows:
Phosphorus source activator injection amount is 0.3 times of volume；
Nitrogen source activator injection amount is 0.2 times of volume；
It is 0.2 times of volume containing inorganic salts and microelement activator injection amount；
Carbon source activator injection amount is 0.3 times of volume.
Three, the segmentation injection of activator
Experimental group: consistent with 1 method of embodiment.
Control group: the injection not being segmented at present is exactly to be directly injected into underground, mesh after mixing all activated dose of nutrition
Elder generation 15m as previous3Clear water, be then poured into 5% molasses nutrient solution be added the yeast extract of appropriate (20~300mg/L), citrate,
Weak base acid phosphate, nitrate, low mineralization (30 000mg/L), the Ca of low concentration (1~20mg/L)2+、Mg2+、Fe2+、Al3+、
Cr3+、Co3+Deng (specific method record in the following literature: Lv Zhenshan, Wang Lifeng, Di Shengjie, et al. Microbial In Fuyu Oil Field
Water plugging and profile controlling field test [J] grand celebration petroleum geology and exploitation, 2002 (5): 48-50), finally replace injection 15m3Clear water.
Closing well 3 months.
Four, it detects
The oil recovery that drives a well is carried out after 3 months, after driving a well, according to " one way of distillation of detecting crude oil water content method "
(GB/T8929-1988) national standard method detection crude oil moisture content (since water blockoff is all in the position of several kms in underground,
It can not carry out directly observing and detecting, can only indirectly be embodied by crude oil water content and oil increasing effect).
As a result as shown in Figure 1:
Experimental group:
1 composite water cut of well is down to 60% by 98%, 2.7 tons of average daily oil-producing.2 composite water cut of well is down to by 98%
75%, 4.5 tons of average daily oil-producing, the period is averaged 903 tons of individual well oil-producing.
Control group: 647 tons of individual well highest incremental oil production, average individual well increase 129.2 tons of oil.
The above results show that segmented activator injection makes microorganism give full play to plugging action, and moisture content is remarkably decreased,
Oil increasing effect is significant.
Claims (10)
1. a kind of segmented activator injection method, include the following steps: to oil field formation at target locations according to following 1) -4) sequence
The segmented activator that segmentation injection is made of following variety classes activator, forms principal piece plug:
1) phosphorus source activator；Phosphorus source activator includes following solute: sodium phosphate and hypophosphorous acid are received；
2) nitrogen source activator；The nitrogen source activator includes following solute: glutamate and glutamic acid；
3) contain inorganic salts and microelement activator；Described containing inorganic salts and microelement activator includes following solute:
Copper sulphate, ferric sulfate, calcium chloride and magnesium sulfate；
4) carbon source activator；The carbon source activator includes following solute: corn pulp and cornstarch.
2. according to the method described in claim 1, it is characterized by:
The various activator further include solvent；
The various activator are made of each solute and solvent；
The segmented activator by phosphorus source activator, the nitrogen source activator, described contain inorganic salts and microelement
Activator and carbon source activator composition.
3. method according to claim 1 or 2, it is characterised in that:
Each solute is as follows in the mass volume ratio of the segmented activator in the various activator:
The sodium phosphate is 0.5% in the quality volumn concentration of the segmented activator,
The quality volumn concentration that the hypophosphorous acid is contained in the segmented activator is 1%；
The glutamate is 0.02% in the quality volumn concentration of the segmented activator；
The glutamic acid is 0.01% in the quality volumn concentration of the segmented activator；
The copper sulphate is 0.006% in the quality volumn concentration of the segmented activator；
The ferric sulfate is 0.03% in the quality volumn concentration of the segmented activator；
The calcium chloride is 0.03% in the quality volumn concentration of the segmented activator；
The magnesium sulfate is 0.03% in the quality volumn concentration of the segmented activator；
The corn pulp is 0.3% in the quality volumn concentration of the segmented activator；
The cornstarch is 0.5% in the quality volumn concentration of the segmented activator.
4. method according to claim 1 to 3, it is characterised in that:
Further include following steps before injecting phosphorus source activator: the oil field Xiang Suoshu formation at target locations injected clear water makees protective agent,
Form preposed attributives.
5. method according to any one of claims 1-4, it is characterised in that:
Further include following steps after injecting the carbon source activator: formation at target locations injection Produced Liquid in the oil field Xiang Suoshu replaces
Liquid forms and replaces slug.
6. any method in -5 according to claim 1, it is characterised in that: the oil field is middle high water cut oil field；
And/or the water content of the middle high water cut oil field is more than or equal to 40%.
7. method as claimed in any one of claims 1 to 6 improves the application inside oil reservoir in microorganism plugging action.
8. a kind of product for improving microorganism plugging action inside oil reservoir, including in method as claimed in any one of claims 1 to 6
The various activator of independent packaging.
9. segmented activator injection improves the application inside oil reservoir in microorganism plugging action；
The segmented activator injection be the phosphorus source activator being implanted sequentially in method as claimed in any one of claims 1 to 6,
Nitrogen source activator contains inorganic salts and microelement activator and carbon source activator.
10. a kind of method for improving microorganism plugging action inside oil reservoir, including any the method for claim 1-6, are realized
Improve microorganism plugging action inside oil reservoir.
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Cited By (1)
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