CN101131075A - Oil well microbial profile control and water shutoff method - Google Patents
Oil well microbial profile control and water shutoff method Download PDFInfo
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- CN101131075A CN101131075A CNA2006100304337A CN200610030433A CN101131075A CN 101131075 A CN101131075 A CN 101131075A CN A2006100304337 A CNA2006100304337 A CN A2006100304337A CN 200610030433 A CN200610030433 A CN 200610030433A CN 101131075 A CN101131075 A CN 101131075A
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Abstract
The present invention relates to microbial petroleum producing technology, and is especially microbial profile controlling and water shutting off method for oil well. The method includes screening out one kind of bacterium capable of producing biological polymer for controlling profile from oil reservoir output water, and injecting the bacterial liquid and nutritious molasses liquid into circular space.
Description
Technical field
The present invention relates to a kind of microbe oil production method technical field.
Background technology
Microbe oil production is to utilize the useful activity of microorganism self such as degrading crude oil and/or metabolite such as biosurfactant, organic acid, alcohol to wait the oil recovery technique that improves oil recovery factor.
U.S. 1991 microbe oil production classify that heat is driven as, the 4th class after the chemical flooding, gas drive improves the oil recovery factor method, and in many oil fields, used, the former Soviet Union also classifies microbe oil production as new raising recovery ratio method that a kind of industrialness is used, states such as East Bloc, Australia, Canada also take much count of the research to MEOR, and achievement in research is used for mining site.Microbe oil production is with its considerable economic, the attention that unique advantage and vast potential for future development cause various countries' petroleum industrial circle.After the nineties in 20th century, especially in recent years, China also began microbe oil production Study on Technology and application work.Some institution of higher learning such as Shandong University, Nankai University etc. in succession with cooperation development such as Shengli Oil Field, Daqing oil field, Dagang Oilfields this technical research.Jilin Oil Field is being used the nutraceutical method of injection and is being carried out individual well microorganism huff and puff field test, Dagang Oilfield is carrying out the microbial oil displacement pilot test, Daqing oil field mainly carries out a large amount of fundamental research work at present, and Shengli Petroleum Administration Bureau has set up microbe oil production technical research centre of development specially, on the basis of laboratory test research, carrying out the application study of single well stimulation field test, simultaneously also in bacterial screening that carries out microbial oil displacement and relevant laboratory test.
Present waterflooding oil field improves intake profile and mainly adopts profile control technique.Microbial profile control is that the bacterium that can produce biopolymer is injected the stratum, make its a large amount of breedings, the biopolymer of somatic cells and metabolism output thereof takes up selective shut-off effect preferably to high permeability zone, thereby improve interlayer oil-water movement situation, enlarge and involve the zone, improve oil recovery.
Summary of the invention
The purpose of this invention is to provide a kind of oil well microbial profile control and water shutoff method, this kind method has changed uses the hot water profile control and water shutoff method in the past.
For achieving the above object, the technical scheme taked of the present invention is:
A kind of oil well microbial profile control and water shutoff method, this method is: screening one strain has the bacterial classification of the metabolism output biopolymer of profile control ability in oil reservoir output water, adopt the injection of this bacterium liquid and nutrient solution molasses slug formula and two kinds of technologies of hybrid injection to carry out then, the ring set space is injected.
The bacterial classification of the metabolism output biopolymer that screening obtains in the oil reservoir output water with profile control ability, through Kansai Research Inst. Inc. of Japan to bacterial 16 S rRNA gene sequencing, be accredited as enterobacteria Enterobacter sp sibling species, code name is for holding up JL21.
It is in the 5% molasses 100m3 process of injection that the slug formula is injected, and middle interting injected 3 1m3 slug bacterium liquid (bacterial concentration＞107/mL); Hybrid injection is to inject 5% molasses 100m3 process, evenly injects 2% strain fermentating liquid (105 of bacterial concentrations/mL); Closing well 10d behind the replacement 15m3 clear water.
Beneficial effect of the present invention:
(1) purpose bacterium output biopolymer ability is strong, profile control and water plugging is effective, and the struggle for existence ability is strong in the oil reservoir environment; The oil increasing effect of mining site microbial profile control and water shutoff is with size, the performance of bacterium and to go deep into the ability of oil reservoir inside relevant; Relevant with the quantity and the character of the biological polysaccharide of bacterium output; Relevant with quantity, quality, concentration and the mode of movement of nutrient matrix.
(2) the slug formula is injected and is guaranteed that purpose bacterium concentration height, quantity in the zone that limits relatively have comparative advantage (＞95%), can give full play to the profile control and water plugging effect of output biopolymer, and effect of increasing production is better than hybrid injection.The clear water dosing has reduced the harm of assorted bacterium, helps breeding of purpose bacteria growing and output biopolymer, and effect of increasing production is significantly better than sewage dosing injection technology.
(3) microbial profile control and water shutoff effective, do not influence follow-up water drive, do not influence water-oil separating and oil property, equipment is simple, easy construction, period of validity is long, expense is low, high efficiency; Suitable bacterial classification and appropriate process technology are basis and the assurances that improves the microbial profile control effect, improves recovery ratio.A large amount of injections of high-purity, high concentration purpose bacterial classification are the keys that guarantees microbial profile control field test effect.
The specific embodiment
The present invention is further illustrated below in conjunction with the specific embodiment:
Oil well microbial water blockoff field test adopts bacterium liquid and nutrient solution molasses slug formula to inject and two kinds of technologies of hybrid injection are carried out, and the ring set space is injected.It is in the 5% molasses 100m3 process of injection that the slug formula is injected, and middle interting injected 3 1m3 slug bacterium liquid (bacterial concentration＞107/mL); Hybrid injection is to inject 5% molasses 100m3 process, evenly injects 2% strain fermentating liquid (105 of bacterial concentrations/mL); Closing well 10d behind the replacement 15m3 clear water.
Screening obtains the bacterial classification that a strain has the metabolism output biopolymer of profile control ability, through Kansai Research Inst. Inc. of Japan to bacterial 16 S rRNA gene sequencing, be accredited as enterobacteria Enterobacter sp sibling species, code name can utilize compound sugar output fiber-like biological polyoses polymer such as monose, disaccharides for holding up JL21.
Carried out the water bacteria plugging test of 14 mouthfuls of oil wells, wherein 4 mouthfuls of well data statistics work are finished.These 4 mouthfuls of wells all are high moisture low yield poor efficiency oil wells, behind the water blockoff in the output liquid organic content obviously increase, rise to 58.2～108.4mg/L by 4.9～10.6mg/L before the water blockoff, the pH value descends 0.4～1.8, CO2 in the output gas (bacterium metabolite) content increases, rise to 14.1～33.2% by 6.9～12.3% before the water blockoff, hydrocarbon gas relative amounts such as CH4 descend.DNA of bacteria gene tracking testing result shows all have the purpose bacterium to detect in the output liquid in the 30d behind the water blockoff, and Supreme Procuratorate goes out 105/mL of concentration, and the purpose bacterium accounts for more than 20% of total bacteria count.After 4 mouthfuls of oil wells were implemented water bacteria plugging, the production fluid amount all descended to some extent, moisture more remarkable decline, and than descending 14%～37% before the test, crude output obviously increases, and has the distinguishing feature of polymer water plugging and profile controlling.Ignore and successively decrease, deduct closing well and delay output, the highest incremental oil production 647t of individual well, average individual well increases oily 129.2t.
Claims (2)
1. oil well microbial profile control and water shutoff method, this method is: screening one strain has the bacterial classification of the metabolism output biopolymer of profile control ability in oil reservoir output water, adopt the injection of this bacterium liquid and nutrient solution molasses slug formula and two kinds of technologies of hybrid injection to carry out then, the ring set space is injected.
2. as the said oil well microbial profile control and water shutoff method of claim 1, it is characterized in that: it is in the 5% molasses 100m3 process of injection that the slug formula is injected, and middle interting injected 3 1m3 slug bacterium liquid; Hybrid injection is in the 5% molasses 100m3 process of injection, evenly injects 2% strain fermentating liquid; Closing well 10d behind the replacement 15m3 clear water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100304337A CN101131075A (en) | 2006-08-25 | 2006-08-25 | Oil well microbial profile control and water shutoff method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100304337A CN101131075A (en) | 2006-08-25 | 2006-08-25 | Oil well microbial profile control and water shutoff method |
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| CN101131075A true CN101131075A (en) | 2008-02-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936151A (en) * | 2010-09-10 | 2011-01-05 | 天津亿利科石油技术发展有限公司 | Method for profile control and oil displacement by immobilizing microorganisms |
| CN101746897B (en) * | 2008-12-08 | 2011-09-07 | 中国石油天然气股份有限公司 | Nutrient for inhibiting sulfate reducing bacteria in oil field water and application thereof |
| CN105733536A (en) * | 2016-02-02 | 2016-07-06 | 天津亿利科能源科技发展股份有限公司 | Biological self-healing deep profile control slug combination and using method thereof |
| CN110513073A (en) * | 2019-08-23 | 2019-11-29 | 北京润世能源技术有限公司 | A kind of activation oil reservoir inside microorganism generates the segmented activator injection mode of plugging action |
| CN114427404A (en) * | 2020-09-23 | 2022-05-03 | 中国石油化工股份有限公司 | Microbial huff-puff oil production method for strong-edge-bottom water heavy oil reservoir |
-
2006
- 2006-08-25 CN CNA2006100304337A patent/CN101131075A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746897B (en) * | 2008-12-08 | 2011-09-07 | 中国石油天然气股份有限公司 | Nutrient for inhibiting sulfate reducing bacteria in oil field water and application thereof |
| CN101936151A (en) * | 2010-09-10 | 2011-01-05 | 天津亿利科石油技术发展有限公司 | Method for profile control and oil displacement by immobilizing microorganisms |
| CN105733536A (en) * | 2016-02-02 | 2016-07-06 | 天津亿利科能源科技发展股份有限公司 | Biological self-healing deep profile control slug combination and using method thereof |
| CN105733536B (en) * | 2016-02-02 | 2021-06-15 | 高立红 | Biological self-repairing deep profile control slug combination and use method thereof |
| CN110513073A (en) * | 2019-08-23 | 2019-11-29 | 北京润世能源技术有限公司 | A kind of activation oil reservoir inside microorganism generates the segmented activator injection mode of plugging action |
| CN110513073B (en) * | 2019-08-23 | 2020-07-28 | 北京润世能源技术有限公司 | Sectional type activator injection mode for activating microorganisms in oil reservoir to generate plugging effect |
| CN114427404A (en) * | 2020-09-23 | 2022-05-03 | 中国石油化工股份有限公司 | Microbial huff-puff oil production method for strong-edge-bottom water heavy oil reservoir |
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Application publication date: 20080227 |