CN105733536B - Biological self-repairing deep profile control slug combination and use method thereof - Google Patents
Biological self-repairing deep profile control slug combination and use method thereof Download PDFInfo
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- CN105733536B CN105733536B CN201610069761.1A CN201610069761A CN105733536B CN 105733536 B CN105733536 B CN 105733536B CN 201610069761 A CN201610069761 A CN 201610069761A CN 105733536 B CN105733536 B CN 105733536B
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
A biological self-repairing deep profile control slug combination comprises a biological slug, a biopolymer crosslinking system slug, a chemical polymer crosslinking system slug and an isolation slug; wherein, the biological slug comprises microorganism living bodies, biological polymers and fermentation nutritional agents. A use method of a biological self-repairing deep profile control slug combination utilizes a low injection speed lower than water injection quantity to carry out injection, and the injection slug sequence is as follows: a front end slug, a middle slug and a tail slug; the front end section plug is a biological slug and an isolation slug; the middle slug is sequentially a biopolymer crosslinking system slug, an isolation slug, a biological slug and an isolation slug; the ending slug is a chemical polymer cross-linking system slug for plugging the near wellbore zone. The oil-storing shear resistant agent has good oil-storing shear resistance, high gel quality and good profile control effect; the depth profile control radius is large, so that water injection flow winding is effectively avoided; the combination of each slug is reasonable, and the slugs can be segmentally subjected to biological regeneration and self-repair, so that the service life of the total slug is effectively prolonged, and the period of validity is long.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a biological self-repairing deep profile control slug combination and a using method thereof.
Background
The water outlet of the oil field is a common problem in the oil field development process, the injection water suddenly enters along a high permeable layer due to the heterogeneity of an oil reservoir and the unfavorable oil-water flow ratio, the sweep efficiency of the injection water is greatly reduced, and the profile control technology of a water injection well is one of means for effectively solving the problem of the water outlet of the oil field. However, after the oil field enters a high-water-content or ultra-high-water-content exploitation period, the conventional profile control and water shutoff effect is relatively limited, because the concentration of the chemical agent in the system is high, the gelling and gelling speed is high, the injection amount and the effective distance are limited, and the profile can only improve the water absorption profile and the fluid production profile near the well hole. And with the increase of the number of times of profile control, the effect of profile control measures on profile improvement becomes gradually worse. In an oil reservoir with serious interlayer channeling, subsequent injection liquid after each profile control bypasses a plugging area and still flees back to a high-permeability layer, so that the yield increasing effective period is short and the effect is poor. The weak gel technology integrates traditional profile control and polymer flooding, aims to redirect deep oil reservoir fluid and simultaneously reduces mobility ratio. However, the injection amount of weak gel is large, and the cost is high; the crosslinking system is subjected to long-distance migration and shearing, and poor gelling and low effect are caused by the difference of the adsorbability of the oil reservoir stratum; and after the weak gel system is gelled, the gel is repeatedly sheared in the stratum, so that the gel is broken quickly, the viscosity is reduced, the effective volume and swept area which can really play a role in oil displacement are limited, and the possibility of medicament waste exists.
The deep profile control can solve the problems of channeling and streaming, further improve the recovery ratio and reduce unnecessary medicament waste, and is one of important effective measures for future oil field development. However, the current deep profile control also has many disadvantages to be further solved and improved: the chemical polymer has poor stratum shearing resistance, and poor gelling effect due to repeated shearing of molecules and viscosity reduction after long-distance stratum migration; considering that the hidden danger of stratum rupture is increased due to large injection pressure of a wellhead, the concentration of a chemical polymer of a front-end section plug of a general chemical deep profile control is low, so that the gelling strength of front-end jelly is low, and the plugging control performance is poor; the gel breaking time of the chemical polymer crosslinking system after oil reservoir shearing is shortened, profile control fails once gel is broken, and the chemical polymer crosslinking system has no self-repairing function; the deep profile control chemical polymer has large using amount, can bring adverse effect and environmental pollution to production along with the production of production fluid, and can increase the cost of subsequent treatment.
Disclosure of Invention
The invention aims to provide a biological self-repairing deep profile control slug combination and a using method thereof.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
the biological self-repairing deep profile control slug combination comprises a biological slug, a biological polymer crosslinking system slug, a chemical polymer crosslinking system slug and an isolation slug; wherein the biological slug comprises a microorganism living body, a biological polymer and a fermentation nutrient, the mass volume ratio concentration of the microorganism living body in the biological slug is 0.05-10%, the mass volume ratio concentration of the biological polymer is 0.05-5%, and the viscosity of the biological slug is 1000-8000 mPa.s; the biological polymer cross-linking system slug comprises a biological polymer and a cross-linking agent, wherein the biological polymer in the biological polymer cross-linking system slug accounts for 0.01-5% by mass, and the cross-linking agent accounts for 0.02-2% by mass; the chemical polymer crosslinking system slug comprises a chemical polymer and a crosslinking agent, wherein the mass percent concentration of the chemical polymer is 0.1-2%, and the mass percent concentration of the crosslinking agent is 0.1-1.5%; the isolating slugs are arranged among the slugs and separate the slugs, and comprise biopolymers, and the mass volume ratio concentration of the biopolymers is 0.1% -3%.
The invention can also adopt the following technical measures:
the living microorganisms in the biolistic plug are bacteria or fungi that reproduce at reservoir temperatures and produce biopolymers.
The microorganism living body is any one of bacillus, alcaligenes and sphingomonas.
The biological polymer is at least one of the product of the living fermentation of the microorganism and scleroglucan.
The fermentation nutrient is a fermentation culture medium corresponding to a microorganism living body; the fermentation medium for bacillus comprises the following components: sucrose 20g/L, peptone 1g/L, yeast powder 1g/L, KH2PO44g/L，K2HPO41g/L，NaNO3 1g/L，MgSO40.4g/L, and the pH value is 7.0-7.2; the fermentation medium corresponding to the alcaligenes is as follows: 3g/L of peptone, 5g/L of beef extract, 5g/L of glucose and K2HPO4 1.4g/L，KH2PO4 1.6g/L，NaCl 0.6g/L，MgSO40.1g/L, pH value 7.0-7.2; the fermentation medium corresponding to sphingomonas was: 38g/L of sucrose, 1.6g/L of peptone, 0.6g/L of beef extract and K2HPO40.4g/L, NaCl0.1g/L, pH 7.0-7.5.
The biopolymer in the biopolymer crosslinking system slug is scleroglucan.
The cross-linking agent in the section plug of the biopolymer cross-linking system comprises sodium dichromate and sodium dithionate, wherein the mass percent of the sodium dichromate in the section plug of the biopolymer cross-linking system is 0.01-1%, and the mass percent of the sodium dithionite in the section plug of the biopolymer cross-linking system is 0.01-1%.
The chemical polymer in the chemical polymer crosslinking system slug is polyacrylamide; the cross-linking agent is organic cross-linking agent chromium acetate; the biopolymer in the isolated slug is scleroglucan.
The invention relates to a biological self-repairing deep profile control slug combination which comprises a front end slug, a middle slug and a tail slug, wherein the front end slug comprises a biological slug, the middle slug comprises a biopolymer crosslinking system slug and a biological slug, the tail slug comprises a chemical polymer crosslinking system slug, and isolation slugs are respectively arranged among the slugs.
The use method of the combination of the biological self-repairing deep profile control slug utilizes the low injection speed lower than the water injection amount to inject, and the injection slug sequence is as follows: a front end slug, a middle slug and a tail slug; the front end section plug is a biological slug and an isolation slug; the middle slug is sequentially a biopolymer crosslinking system slug, an isolation slug, a biological slug and an isolation slug; the ending slug is a chemical polymer crosslinking system slug and is used for plugging a near wellbore zone; the effective period of the biological polymer crosslinking system slug is longer than the front end biological slug forming period and the biological slug forming period of the middle slug; the chemical polymer cross-linking system of the ending slug has a slug validity period longer than that of the biological slug forming period of the middle slug.
The invention has the advantages and positive effects that:
in the biological self-repairing deep profile control slug combination and the use method thereof, the slug combination comprises a biological slug, a biopolymer crosslinking system slug, a chemical polymer crosslinking system slug and an isolation slug; the front section plugs comprise biological plugs, the middle section plugs comprise biological polymer cross-linking system plugs and biological plugs, the ending section plugs comprise chemical polymer cross-linking system plugs, and isolation section plugs are arranged among the sections plugs. The oil-storing shear resistant agent has good oil-storing shear resistance, high gel quality and good profile control effect; the depth profile control radius is large, so that water injection flow winding is effectively avoided; the combination of each slug is reasonable, and the compounding effect of the formula is good; the slug can be subjected to biological regeneration and self-repair in sections, so that the service life of the total slug is effectively prolonged, and the period of validity is long; the combination process has high flexibility, can be reasonably combined according to different oil reservoir requirements, and has wide adaptability; the medicament is green and environment-friendly, has no biological toxicity, and has no negative influence on oil reservoirs and later-stage production processes; the biological polymer has strong pseudoplasticity, good rheological property and easy construction.
Drawings
FIG. 1 is a schematic view of a combination of a biological self-healing deep profile control slug of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The biological self-repairing deep profile control slug combination comprises a biological slug, a biological polymer crosslinking system slug, a chemical polymer crosslinking system slug and an isolation slug; the biological slug comprises a microorganism living body, a biopolymer and a fermentation nutrient, the mass-volume ratio concentration of the microorganism living body in the biological slug is 0.05-10%, the mass-volume ratio concentration of the biopolymer is 0.05-5%, the viscosity of the biological slug is 1000-8000 mPa.s, the biological slug has strong pseudoplasticity and strong shearing resistance, can be easily injected into the deep part of an oil reservoir, and after reaching a target position, the viscosity is recovered, the adsorption with the pores of the oil reservoir rock is strong, the detention is good, meanwhile, the microorganism nutrient is a fermentation culture medium corresponding to the microorganism, the microorganism migrates, grows and propagates in a nutritional environment, and continuously generates the biopolymer, blocks the deep part of the oil reservoir or the gel breaking pores of a crosslinking system, and plays a dual role in expanding the slug to the deep part of the oil reservoir and repairing the crosslinking system slug; the biopolymer cross-linking system slug comprises a biopolymer and a cross-linking agent, the mass percent of the biopolymer in the biopolymer cross-linking system slug is 0.01-5%, the mass percent of the cross-linking agent is 0.02-2%, the biopolymer cross-linking system slug is shear resistant, the gelling time is controllable, the gelling strength is adjustable, the colloid is stable, and the biopolymer cross-linking system slug can be designed into transition slugs with different gelling times and different medium strengths as required; the chemical polymer crosslinking system slug comprises a chemical polymer and a crosslinking agent, the mass percent concentration of the chemical polymer is 0.1-2%, the mass percent concentration of the crosslinking agent is 0.1-1.5%, the chemical polymer crosslinking system slug has the characteristics of high gelling strength, controllable gelling time, good stability, environmental protection, no biotoxicity and the like, and can be designed into a near wellbore zone plugging agent slug with moderate gelling time, high strength, large elasticity and scouring resistance according to the process requirements; the isolating slug is arranged between the slugs and comprises a biopolymer, the mass volume ratio concentration of the biopolymer is 0.1-3%, and the isolating slug isolates each slug or replaces the gelling system out of the wellbore into the near wellbore zone.
As shown in fig. 1, the biological self-repairing deep profile control slug assembly of the present invention is divided into a front end slug, a middle slug and a tail slug, wherein the front end slug includes a biological slug, the middle slug includes a biopolymer crosslinking system slug and a biological slug, the tail slug includes a chemical polymer crosslinking system slug, and isolation slugs are respectively disposed between the slugs. The middle slug can be repeatedly arranged according to the requirement to realize multi-section plugging and biological regeneration repair.
Example 1:
the biological slug consists of living microbe producing biopolymer and its fermented product biopolymer and fermented nutrient. The living microorganism is sphingomonas capable of producing biopolymer and capable of reproduction at 40 deg.C oil reservoir temperature, and its culture medium comprises sucrose 38g/L, peptone 1.6g/L, beef extract 0.6g/L, and K2HPO40.4g/L, NaCl0.1g/L, producing a biopolymer content of 3% (w/v) and a viscosity of 4000mPa · s; the thallus content in the fermentation liquor is 0.1% (w/v).
The mass percent of the scleroglucan in the biopolymer crosslinking system slug is 0.08 percent, and the mass percent of the scleroglucan in the biopolymer crosslinking system slug consists of a crosslinking agent, wherein the mass percent of the sodium dichromate in the crosslinking agent is 0.3 percent, and the mass percent of the sodium dithionate in the crosslinking agent is 0.15 percent. The gel forming time is 264h, the gel forming strength is D (gel code), the biopolymer has strong anti-shearing capability, the gel forming time and strength of the cross-linking system sand-passing bed and sand-not-passing bed are basically the same, the biopolymer is not influenced by oil reservoir migration and shearing, the gel forming quality is high, the biopolymer can resist the temperature of 30-130 ℃, the temperature is 60 ℃, the aging stability is stable for 100 days, and the stability is strong.
The chemical polymer crosslinking system slug consists of polyacrylamide with the mass percent concentration of 0.3 percent and organic crosslinking agent chromium acetate with the mass percent concentration of 0.2 percent. Gelling time 96h, gelling strength E (gel code); the product can resist 40-90 deg.C, and can be aged for 180 days at 60 deg.C without gel breaking.
The isolating plug is biopolymer scleroglucan with the content of 0.1% (w/v).
Example 2:
the biological slug consists of living microbe producing biopolymer and its fermented product biopolymer and fermented nutrient. The living microorganism is bacillus which can reproduce at the oil reservoir temperature of 60 ℃ and produce biopolymer, and the strain fermentation nutrient is: sucrose 20g/L, peptone 1g/L, yeast powder 1g/L, KH2PO44g/L，K2HPO4 1g/L，NaNO3 1g/L，MgSO40.4g/L and the pH value is 7.0-7.2. Resulting in a biopolymer content of 0.05% (w/v) and a viscosity of 2000mPa · s; the thallus content in the fermentation liquor is 0.05% (w/v).
The mass percent of the scleroglucan in the biopolymer crosslinking system slug is 0.1 percent and the crosslinking agent is 0.4 percent, the mass percent of the sodium dichromate in the crosslinking agent is 0.2 percent. And (3) performing simulated stratum adsorption shearing on two crosslinking systems with the same volume, namely one crosslinking system is subjected to simulated stratum adsorption shearing through a sand bed, then performing a crosslinking experiment under the same stability, and detecting the gelling time and strength. The results of the experiment are shown in table 1:
TABLE 1 shear resistance test results for biopolymer crosslinking systems
| Experimental group | Whether to shear through sand bed | Gel forming time | Gel strength |
| 1 | Is that | 152h | D |
| 2 | Whether or not | 151h | D |
Experiments show that the gelling time and strength of the sand-passing bed and the sand-not-passing bed of the crosslinking system are basically the same, the biopolymer crosslinking system is not influenced by the migration and shearing of an oil reservoir, and the gelling quality is high.
The chemical polymer crosslinking system slug consists of polyacrylamide with the mass percent concentration of 0.2% and organic crosslinking agent chromium acetate with the mass percent concentration of 0.1%. The microorganism is inoculated into the system before and after crosslinking respectively, and the experiment for investigating the influence of the crosslinking agent system on the biological growth before and after gelling is shown in table 2:
TABLE 2 Experimental results of the Effect of chemical Polymer crosslinking System on biological growth
Experiments show that the medicament components before and after the gelling have no influence on the formation microorganism bacteria, have no toxicity to organisms and have good compatibility with biological slugs.
The isolating plug is biopolymer scleroglucan with the content of 0.2% (w/v).
Example 3:
biolistic slugs are produced from biopolymersThe microbial living body and the fermentation product thereof, namely the biopolymer and the fermentation nutrient. The living microorganism is polymer-producing Sphingomonas capable of reproduction and propagation at 40 deg.C oil reservoir temperature, and its culture has fermentation nutrient of sucrose 38g/L, peptone 1.6g/L, beef extract 0.6g/L, and K2HPO40.4g/L, NaCl0.1g/L, producing biopolymer content of 3% (w/v), adding scleroglucan 2% (w/v), viscosity of 7000 mPas; the thallus content in the fermentation liquor is 10% (w/v).
The mass percent of the scleroglucan in the biopolymer crosslinking system slug is 5 percent, and the mass percent of the scleroglucan in the biopolymer crosslinking system slug consists of a crosslinking agent, wherein the mass percent of the sodium dichromate in the crosslinking agent is 1 percent, and the mass percent of the sodium dithionate in the crosslinking agent is 1 percent.
The chemical polymer crosslinking system slug consists of 2 mass percent of polyacrylamide and 1.5 mass percent of organic crosslinking agent chromium acetate.
The isolating plug is biopolymer scleroglucan and has the content of 3% (w/v).
Example 4:
the biological slug consists of living microbe producing biopolymer and its fermented product biopolymer and fermented nutrient. The living microorganism is an alcaligenes for producing biopolymer which can be reproduced at the oil reservoir temperature of 40 ℃, and the strain fermentation nutrient is as follows: 3g/L of peptone, 5g/L of beef extract, 5g/L of glucose and K2HPO4 1.4g/L，KH2PO4 1.6g/L，NaCl 0.6g/L，MgSO40.1g/L, pH 7.0-7.2, biopolymer content 1.5% (w/v), scleroglucan 2.5% (w/v), viscosity 6000 mPas; the thallus content in the fermentation liquor is 5% (w/v).
The mass percent of the scleroglucan in the biopolymer crosslinking system slug is 0.01 percent and the crosslinking agent is 0.01 percent, the mass percent of the sodium dichromate in the crosslinking agent is 0.01 percent, and the mass percent of the sodium dithionate in the crosslinking agent is 0.01 percent.
The chemical polymer crosslinking system slug consists of polyacrylamide with the mass percent concentration of 0.1% and organic crosslinking agent chromium acetate with the mass percent concentration of 0.1%.
The isolating plug is biopolymer scleroglucan with the content of 2% (w/v).
Example 5:
the daily water injection rate of a water injection well in a certain oil field is 280m3(ii)/d, permeability of (60-11000). multidot.10-3μm2The porosity is 25-35%, the crude oil viscosity of the surrounding benefited oil well is 396mPa.s, the oil reservoir temperature is 50 ℃, the contents of asphalt and colloid are higher, the comprehensive water content is more than 90%, the profile control and precipitation effect is not obvious after multiple cycles of profile control, and the deep profile control is carried out by adopting a biological self-repairing deep profile control slug combined process.
In the examples, the total injection amount was 9580m3Injection displacement of 200m3And d, construction period 55d, waiting for 3d, and then normally injecting water. After one month, the production wells have the water content reduction phenomenon in succession, wherein the water content reduction amplitude of three wells is more than 20 percent, the water content reduction amplitude of two wells is more than 30 percent, the water content reduction amplitude of one well is 16 percent, the water content reduction is obvious, the oil increase is obvious, the production is stable for two years continuously, the deep profile control effect is long in effective period, and the technical advantages of the biological self-repairing deep profile control slug combination process are revealed.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a biological self-repairing degree of depth profile control slug combination which characterized in that: comprises a biological slug, a biological polymer cross-linking system slug, a chemical polymer cross-linking system slug and an isolation slug; wherein the biological slug comprises a microorganism living body, a biological polymer and a fermentation nutrient, the microorganism living body in the biological slug is bacteria or fungi which carry out reproduction and production of the biological polymer at the oil reservoir temperature, the mass volume ratio concentration of the microorganism living body in the biological slug is 0.05-10%, the mass volume ratio concentration of the biological polymer is 0.05-5%, and the viscosity of the biological slug is 1000-; the biopolymer cross-linking system slug comprises a biopolymer and a cross-linking agent, wherein the biopolymer in the biopolymer cross-linking system slug is scleroglucan, the mass percent of the biopolymer in the biopolymer cross-linking system slug is 0.01-5%, and the mass percent of the cross-linking agent is 0.02-2%; the chemical polymer crosslinking system slug comprises a chemical polymer and a crosslinking agent, wherein the chemical polymer in the chemical polymer crosslinking system slug is polyacrylamide, the mass percent concentration of the chemical polymer is 0.1-2%, and the mass percent concentration of the crosslinking agent is 0.1-1.5%; the isolating slug is arranged among the slugs and separates the slugs, and comprises a biopolymer, and the mass volume ratio concentration of the biopolymer is 0.1-3%;
the slug combination is divided into a front-end slug, a middle slug and a tail-end slug, wherein the front-end slug comprises a biological slug, the middle slug comprises a biopolymer crosslinking system slug and a biological slug, the tail-end slug comprises a chemical polymer crosslinking system slug, and isolation slugs are respectively arranged among the slugs.
2. The biological self-healing deep profile control slug combination of claim 1, characterized in that: the microorganism living body is any one of bacillus, alcaligenes and sphingomonas.
3. The biological self-healing deep profile control slug combination of claim 2, characterized in that: the fermentation nutrient is a fermentation culture medium corresponding to the microorganism living body; the fermentation medium for bacillus comprises the following components: sucrose 20g/L, peptone 1g/L, yeast powder 1g/L, KH2PO4 4g/L， K2HPO4 1g/L，NaNO3 1g/L，MgSO40.4g/L, and the pH value is 7.0-7.2; the fermentation medium corresponding to the alcaligenes is as follows: 3g/L of peptone, 5g/L of beef extract, 5g/L of glucose and K2HPO4 1.4g/L，KH2PO4 1.6g/L ，NaCl 0.6g/L，MgSO40.1g/L, pH value 7.0-7.2; the fermentation medium corresponding to sphingomonas was: 38g/L of sucrose, 1.6g/L of peptone, 0.6g/L of beef extract and K2HPO40.4g/L, NaCl0.1g/L, pH 7.0-7.5.
4. The biological self-healing deep profile control slug combination of claim 1, characterized in that: the cross-linking agent in the biological polymer cross-linking system slug comprises sodium dichromate and sodium dithionate, the mass percentage of the sodium dichromate in the biological polymer cross-linking system slug is 0.01-1%, and the mass percentage of the sodium dithionite is 0.01-1%.
5. The biological self-healing deep profile control slug combination of claim 1, characterized in that: the cross-linking agent in the chemical polymer cross-linking system slug is organic cross-linking agent chromium acetate; the biopolymer in the isolated slug is scleroglucan.
6. A method for using the biological self-repairing deep profile control slug combination of any one of claims 1-5, characterized in that: injecting at a low injection rate lower than daily water injection rate, the sequence of the injection slug is as follows: a front end slug, a middle slug and a tail slug; the front end section plug is a biological slug and an isolation slug; the middle slug is sequentially a biopolymer crosslinking system slug, an isolation slug, a biological slug and an isolation slug; the ending slug is a chemical polymer crosslinking system slug and is used for plugging a near wellbore zone; the effective period of the biological polymer crosslinking system slug is longer than the front end biological slug forming period and the biological slug forming period of the middle slug; the chemical polymer cross-linking system of the ending slug has a slug validity period longer than that of the biological slug forming period of the middle slug.
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