CN101011066A - Method for inhibiting activity of sulfate reducing bacteria in oil field surface water and agent used thereof - Google Patents
Method for inhibiting activity of sulfate reducing bacteria in oil field surface water and agent used thereof Download PDFInfo
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- CN101011066A CN101011066A CN 200710071774 CN200710071774A CN101011066A CN 101011066 A CN101011066 A CN 101011066A CN 200710071774 CN200710071774 CN 200710071774 CN 200710071774 A CN200710071774 A CN 200710071774A CN 101011066 A CN101011066 A CN 101011066A
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- surface water
- reducing bacteria
- sulfate reducing
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002352 surface water Substances 0.000 title claims description 57
- 241000894006 Bacteria Species 0.000 title claims description 56
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims description 52
- 239000003795 chemical substances by application Substances 0.000 title abstract 4
- 230000002401 inhibitory effect Effects 0.000 title 1
- 230000000694 effects Effects 0.000 claims abstract description 45
- 239000003814 drug Substances 0.000 claims abstract description 35
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 28
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims abstract description 15
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 14
- 235000015393 sodium molybdate Nutrition 0.000 claims abstract description 14
- 239000011684 sodium molybdate Substances 0.000 claims abstract description 14
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 14
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 14
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 239000003112 inhibitor Substances 0.000 claims description 46
- 239000012452 mother liquor Substances 0.000 claims description 44
- 230000005764 inhibitory process Effects 0.000 claims description 29
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 16
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 13
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000001988 toxicity Effects 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- 230000000452 restraining effect Effects 0.000 abstract 5
- 239000003673 groundwater Substances 0.000 abstract 2
- 239000010413 mother solution Substances 0.000 abstract 2
- 230000001580 bacterial effect Effects 0.000 abstract 1
- 231100000045 chemical toxicity Toxicity 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 6
- 239000013043 chemical agent Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 235000009827 Prunus armeniaca Nutrition 0.000 description 1
- 244000018633 Prunus armeniaca Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000680 avirulence Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- CLMUGYUKKAYESU-UHFFFAOYSA-N copper nickel(2+) dinitrate Chemical compound [N+](=O)([O-])[O-].[Ni+2].[N+](=O)([O-])[O-].[Cu+2] CLMUGYUKKAYESU-UHFFFAOYSA-N 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 244000005706 microflora Species 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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Abstract
The invention relates to a method for restraining the activity of reduction bacterial in the ground water of oil field, and relative drugs. The invention can resolve the problems of present method as low SRB disinfect ratio, high chemical toxicity, serious pollution or the like. The invention comprises 100 deals of sodium nitrate, 2-20 deals of erinitrit, 0.2-0.6 deals of cobalt nitrate, 0.2-0.6 deals of nickel nitrate, 0.2-0.6 deals of cupric nitrate, and 0.2-0.6 deals of sodium molybdate. And the restraining method comprises that 1, preparing the mother solution of restraining agent; 2, measuring the content of SO42-; 3, adding the mother solution of restraining agent. The inventive restraining agent can improve the activity of anti-nitrated microbe, without toxicity, pollution and the drug-fast generation. The invention uses the environment and nourishment competitions to restrain the activity of SRB in the ground water of oil field, to reduce more than 85% of S2 density.
Description
Technical field
The present invention relates to a kind of method and employed medicament that suppresses sulfate reducing bacteria activity in the water.
Background technology
China's onshore oil field has entered the secondary oil recovery of oil-bearing stratum flooding and the tertiary oil recovery period of oil reservoir injection of polymer, water a large amount of in secondary, tertiary oil recovery process are extracted on the ground from underground with a spot of oil, oil is defeated outward as product after the water-oil separating on the ground, be called the oil field surface water and separate the water that obtains, the oil field surface water is recycled into oilbearing stratum after treatment and recycles.
The oil field surface water exists various bacteria, wherein to ground, oil field oil extraction system harm maximum be sulfate reducing bacteria (Sulfate Reducing Bacteria, SRB), SRB can be reduced to sulphion with sulfate radical, sulphion can cause equipment corrosion.Because the slightly solubility of metal sulfide makes suspended solids content increase in the recovered water, cause filtrate pollution, water-oil separating difficulty and annotate degradation under the cumulative power, produce to the oil field and cause serious harm.Solution sulfate reducing bacteria reduced sulphur acid group is that the method for sulphion etching apparatus all is to adopt physics or chemical means directly to kill SRB at present; But, cause the killing rate of sulfate reducing bacteria low because the physical sterilization zone of action is little; And utilize chemical agent directly to kill sulfate reducing bacteria because sulfate reducing bacteria and other microorganisms coexist as in the polysaccharide glue of microorganisms, therefore chemical agent is difficult to penetrate the biological polyoses glued membrane and directly acts on sulfate reducing bacteria, so physics and the chemistry method of directly killing SRB all exists the sulfate reducing bacteria killing rate low and make oil field equipment still suffer the defective of sulphion corrosion at present.The chemical agent toxicity that is used for directly killing SRB at present is big, uses not only contaminated environment for a long time, also easily produces antibody-resistant bacterium.
Summary of the invention
The objective of the invention is to have all that the sulfate reducing bacteria killing rate is low, oil field equipment still suffers the sulphion corrosion and be used for directly killing the chemical agent toxicity of SRB at present big in order to solve method that present physics and chemistry directly kill SRB, use contaminated environment not only for a long time, also easily produce the defective of antibody-resistant bacterium, and a kind of method and the employed medicament that suppresses sulfate reducing bacteria activity in the surface water of oil field that provides.Suppressing in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity presses ratio of quality and the number of copies and is made up of 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate.Suppressing the method for sulfate reducing bacteria activity in the surface water of oil field carries out according to the following steps: (one) preparation inhibitor mother liquor: will suppress medicament and water and be made into the inhibitor mother liquor in the metering water tank; (2) measure SO in the surface water water body of oil field
4 2-Content; (3) press SO in the water body
4 2-Add the inhibitor mother liquor with the mol ratio of nitrate anion 1: 0.5～5, can suppress the activity of sulfate reducing bacteria in the surface water of oil field; The inhibition medicament that wherein adds is made up of 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate by ratio of quality and the number of copies.The present invention suppresses the biologically active that the employed inhibition medicament of sulfate reducing bacteria activity in the surface water of oil field can improve denitrifying microorganism in the surface water of oil field; The medicament avirulence, use for a long time free from environmental pollution, do not produce antibody-resistant bacterium yet.The present invention suppresses the method for sulfate reducing bacteria activity in the surface water of oil field by improving the biologically active of denitrifying microorganism in the surface water of oil field, suppress sulfate reducing bacteria activity in the surface water of oil field by competition of the environment between the biology and nutrient competition, reduce sulfate reducing bacteria dominant microflora status, sulphion concentration reaches more than 85% in the surface water of reduction oil field, has avoided oil field equipment to suffer the corrosion of sulphion effectively.The method that the present invention suppresses sulfate reducing bacteria activity in the surface water of oil field is steady in a long-term effective, and long-term utilization can significantly reduce the diversity and the quantity of sulfate reducing bacteria flora.
Description of drawings
Fig. 1 is that embodiment nine suppresses sulfate reducing bacteria activity method frame figure in the surface water of oil field, and Fig. 2 is that embodiment 16 suppresses sulfate reducing bacteria activity method frame figure in the surface water of oil field.
Embodiment
Embodiment one: present embodiment suppresses in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and presses ratio of quality and the number of copies and be made up of 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate.
Sodium nitrate can suppress the activity of sulfate reducing bacteria potently in the present embodiment, improves the biologically active of denitrifying microorganism in the surface water of oil field.In the present embodiment natrium nitrosum can raise redox potential, accelerate to suppress the initial rate 20%～30% of medicament denitrification.Cobalt nitrate, nickel nitrate copper nitrate and sodium molybdate can promote the growth of denitrifying microorganism and synergy to improve 5～10 percentage points of inhibition sulfate reducing bacteria effects in the present embodiment.
Adding present embodiment in every liter of oil field surface water, to suppress behind the medicament 50mg variation of water quality as shown in table 1.Wherein the 1# water treatment station is a Daqing oil field oil extraction No.1 Factory north I-2 water treatment station, and the 2# water treatment station is Daqing oil field new apricot nine water treatment stations of four factories that recover the oil.Comparative trial digital proof present embodiment suppresses pH value, basicity, salinity and the light absorption value not obviously change of medicament to water body, and the character of the oil field surface water suppresses not change behind the medicament in the adding present embodiment.Illustrate that present embodiment suppresses the adding of medicament, does not influence oil field production capacity production.
Table 1
| Water sample | The pH value | Basicity (mg/L) | Salinity (mg/L) | Light absorption value (420nm) | |
| 1# water treatment station water | Unconstrained dose | 7.85 | 2350.8 | 5428.9 | 0.021 |
| Add inhibitor | 7.86 | 2364.4 | 5468.7 | 0.021 | |
| 2# water treatment station water | Unconstrained dose | 7.97 | 2267.5 | 5412.6 | 0.018 |
| Add inhibitor | 7.94 | 2285.7 | 5458.1 | 0.017 | |
Embodiment two: the difference of present embodiment and embodiment one is: suppress in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and press ratio of quality and the number of copies and be made up of 100 parts sodium nitrate, 5～15 parts natrium nitrosum, 0.3～0.5 part cobalt nitrate, 0.3～0.5 part nickel nitrate, 0.3～0.5 part copper nitrate and 0.3～0.5 part sodium molybdate.
Embodiment three: the difference of present embodiment and embodiment one is: suppress in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and press ratio of quality and the number of copies and be made up of 100 parts sodium nitrate, 10 parts natrium nitrosum, 0.4 part cobalt nitrate, 0.4 part nickel nitrate, 0.4 part copper nitrate and 0.2 part sodium molybdate.
Present embodiment is decided by suppressing effect and taking all factors into consideration of dosing cost.
Embodiment four: present embodiment suppresses the method for sulfate reducing bacteria activity in the surface water of oil field and carries out according to the following steps: (one) preparation inhibitor mother liquor: will suppress medicament and water and be made into the inhibitor mother liquor in the metering water tank; (2) measure SO in the surface water water body of oil field
4 2-Content; (3) press SO in the water body
4 2-Add the inhibitor mother liquor with the mol ratio of nitrate anion 1: 0.5～5, can suppress the activity of sulfate reducing bacteria in the surface water of oil field; The inhibition medicament that wherein adds is made up of 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate by ratio of quality and the number of copies.
Present embodiment utilization oil field existing equipment condition realizes suppressing the activity of sulfate reducing bacteria in the surface water of oil field.The inhibitor mother liquor does not change oil field surface water pH value after adding.The water of preparing the inhibitor mother liquor in the present embodiment in the step 1 can be the water in the ground system of oil field.
In suppressing the contrast experiment that added amount of chemical is identical, other condition COD (carbon source concentration) value removed is all identical, the water body COD value of intaking is S in the water outlet of 1800mg/L
2-Concentration is 55～65mg/L, and water inlet water body COD value is S in the water outlet of 600mg/L
2-Concentration is 0mg/L (detection limit is following).Illustrate that the COD value that reduces water body can suppress sulfate reducing bacteria in the surface water of oil field effectively, reduce the S in the water body
2-Concentration.The good more COD value of oil-water separation is low more, and the COD value is 100～500mg/L in the surface water of current oil field, so present embodiment need not be adjusted oil field surface water COD value.
Add the inhibition medicament of same dose respectively, the water oxygen reduction potential is-300mV～-400mV water in the sulfide content height; The water oxygen reduction potential for-50mV～-150mV water in sulfide content obviously reduce.Illustrate that nitrate concentration can not suppress effect by actual response, the variation of redox potential has a direct impact suppressing effect.
Embodiment five: the difference of present embodiment and embodiment four is: the quality that suppresses medicament in the step () accounts for 15%～40% of inhibitor mother liquor gross mass.Other step is identical with embodiment four.
In present embodiment inhibitor mother liquor configuration proportion scope, promptly can guarantee to suppress the dissolving of medicament, can save industrial water again.
Embodiment six: the difference of present embodiment and embodiment four is: the omnidistance inhibition of step (three) inhibitor mother liquor branch adds with two kinds of methods of local inhibition.Other step is identical with embodiment four.
Embodiment seven: the difference of present embodiment and embodiment six is: the omnidistance method that adds that suppresses adds the inhibitor mother liquor at a place, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 1～5.Other step is identical with embodiment six.
Present embodiment can keep in the water body redox potential for-50mV～-150mV.
Embodiment eight: the difference of present embodiment and embodiment six is: the omnidistance method that adds that suppresses adds the inhibitor mother liquor at a place, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 1.5～4.5.Other step is identical with embodiment six.
Embodiment nine: present embodiment with the difference of embodiment six is: the omnidistance inhibition method that adds is returned at the well head that is connected three phase separator and is added the inhibitor mother liquor in the water mixing pipeline, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 2～4.Other step is identical with embodiment six.
The method of sulfate reducing bacteria activity as shown in Figure 1 in the surface water of present embodiment inhibition oil field.The A indication is shown the omnidistance method of adding that suppresses and adds inhibitor mother liquor position among Fig. 1; Dark solid line is represented oil among Fig. 1, and light solid line and light dotted line are represented water among Fig. 1.
Embodiment ten: present embodiment with the difference of embodiment six is: the omnidistance inhibition method that adds is returned at the well head that is connected three phase separator and is added the inhibitor mother liquor in the water mixing pipeline, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 2.5～3.5.Other step is identical with embodiment six.
Embodiment 11: present embodiment with the difference of embodiment six is: the omnidistance inhibition method that adds is returned at the well head that is connected three phase separator and is added the inhibitor mother liquor in the water mixing pipeline, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with 1: 3 mol ratio of nitrate anion.Other step is identical with embodiment six.
Present embodiment significantly suppresses the activity of sulfate reducing bacteria in the surface water of oil field, and sulphion concentration reaches more than 92% in the surface water of reduction oil field; And economize on water, save and suppress medicament.
Embodiment 12: the difference of present embodiment and embodiment six is: the local method that adds that suppresses adds the inhibitor mother liquor in many places, the inhibitor mother liquor is pressed SO in the water body at every turn
4 2-Add with the mol ratio of nitrate anion 1: 0.5～3.Other step is identical with embodiment six.
Present embodiment can keep in the water body redox potential for-50mV～-150mV.
Embodiment 13: the difference of present embodiment and embodiment six is: the local method that adds that suppresses adds the inhibitor mother liquor in many places, the inhibitor mother liquor is pressed SO in the water body at every turn
4 2-Add with the mol ratio of nitrate anion 1: 1～2.5.Other step is identical with embodiment six.
Embodiment 14: the difference of present embodiment and embodiment six is: the local method that adds that suppresses adds the inhibitor mother liquor in many places, the inhibitor mother liquor is pressed SO in the water body at every turn
4 2-Add with the mol ratio of nitrate anion 1: 1.5～2.Other step is identical with embodiment six.
Embodiment 15: the difference of present embodiment and embodiment 12,13 or 14 is: local suppress the method that adds respectively oil field surface water water body redox potential≤-300mV adds the inhibitor mother liquor.Other step is identical with embodiment 12,13 or 14.
Present embodiment can keep effectively in the water body redox potential for-50mV～-150mV.
Embodiment 16: the difference of present embodiment present embodiment and embodiment six is: local suppress the method that adds respectively in the pipeline between three phase separator and free water knockout (FWKO), the pipeline neutralization of leading to the natural subsidence jar leads to divide in the pipeline of surge tank and adds the inhibitor mother liquor 3 times, the inhibitor mother liquor is pressed SO in the water body at every turn
4 2-Add with the mol ratio of nitrate anion 1: 0.5～3.Other step is identical with embodiment six.
The method that present embodiment suppresses sulfate reducing bacteria activity in the surface water of oil field as shown in Figure 2, B among Fig. 2
1, B
2And B
3Indication is shown the local method of adding that suppresses and adds inhibitor mother liquor position, and dark solid line is represented oil among Fig. 2, and light solid line and light dotted line are represented water among Fig. 2.Present embodiment significantly suppresses the activity of sulfate reducing bacteria in the surface water of oil field, and sulphion concentration reaches more than 93% in the surface water of reduction oil field; And economize on water, save and suppress medicament.
Embodiment 17: the difference of present embodiment and embodiment four is: the inhibition medicament is pressed ratio of quality and the number of copies and is made up of 100 parts sodium nitrate, 5～15 parts natrium nitrosum, 0.3～0.5 part cobalt nitrate, 0.3～0.5 part nickel nitrate, 0.3～0.5 part copper nitrate and 0.3～0.5 part sodium molybdate.Other is identical with embodiment four.
Embodiment 18: the difference of present embodiment and embodiment four is: the inhibition medicament is pressed ratio of quality and the number of copies and is made up of 100 parts sodium nitrate, 10 parts natrium nitrosum, 0.4 part cobalt nitrate, 0.4 part nickel nitrate, 0.4 part copper nitrate and 0.2 part sodium molybdate.Other is identical with embodiment four.
Claims (10)
1, suppresses the employed medicament of sulfate reducing bacteria activity in the surface water of oil field, it is characterized in that suppressing in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and form by 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate by ratio of quality and the number of copies.
2, the employed medicament of sulfate reducing bacteria activity in the surface water of inhibition according to claim 1 oil field is characterized in that suppressing in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and is made up of 100 parts sodium nitrate, 5～15 parts natrium nitrosum, 0.3～0.5 part cobalt nitrate, 0.3～0.5 part nickel nitrate, 0.3～0.5 part copper nitrate and 0.3～0.5 part sodium molybdate by ratio of quality and the number of copies.
3, the employed medicament of sulfate reducing bacteria activity in the surface water of inhibition according to claim 1 oil field is characterized in that suppressing in the surface water of oil field the employed inhibition medicament of sulfate reducing bacteria activity and is made up of 100 parts sodium nitrate, 10 parts natrium nitrosum, 0.4 part cobalt nitrate, 0.4 part nickel nitrate, 0.4 part copper nitrate and 0.2 part sodium molybdate by ratio of quality and the number of copies.
4, the method that suppresses sulfate reducing bacteria activity in the surface water of oil field is characterized in that the method that suppresses sulfate reducing bacteria activity in the surface water of oil field carries out according to the following steps: (one) preparation inhibitor mother liquor: will suppress medicament and water and be made into the inhibitor mother liquor in measuring water tank; (2) measure SO in the surface water water body of oil field
4 2-Content; (3) press SO in the water body
4 2-Add the inhibitor mother liquor with the mol ratio of nitrate anion 1: 0.5～5, can suppress the activity of sulfate reducing bacteria in the surface water of oil field; The inhibition medicament that wherein adds is made up of 100 parts sodium nitrate, 2～20 parts natrium nitrosum, 0.2～0.6 part cobalt nitrate, 0.2～0.6 part nickel nitrate, 0.2～0.6 part copper nitrate and 0.2～0.6 part sodium molybdate by ratio of quality and the number of copies.
5, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 4 oil field is characterized in that the quality that suppresses medicament in the step () accounts for 15%～40% of inhibitor mother liquor gross mass.
6, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 4 oil field, it is characterized in that step (three) inhibitor mother liquor divides omnidistancely suppresses and locally suppresses two kinds of methods and add.
7, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 6 oil field is characterized in that the omnidistance method that adds that suppresses adds the inhibitor mother liquor at a place, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 1～5.
8, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 6 oil field is characterized in that the omnidistance method that adds that suppresses returns at the well head that connects three phase separator and add the inhibitor mother liquor in the water mixing pipeline, and the inhibitor mother liquor is pressed SO in the water body
4 2-Add with the mol ratio of nitrate anion 1: 2～4.
9, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 6 oil field is characterized in that the local method that adds that suppresses adds the inhibitor mother liquor in many places, and the inhibitor mother liquor is pressed SO in the water body at every turn
4 2-Add with the mol ratio of nitrate anion 1: 0.5～3.
10, the method for sulfate reducing bacteria activity in the surface water of inhibition according to claim 9 oil field, it is characterized in that local suppress the method that adds respectively oil field surface water water body redox potential≤-300mV adds the inhibitor mother liquor.
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| CNB2007100717743A CN100508758C (en) | 2007-02-09 | 2007-02-09 | Method for inhibiting activity of sulfate reducing bacteria in oil field surface water and agent used thereof |
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| CNB2007100717743A CN100508758C (en) | 2007-02-09 | 2007-02-09 | Method for inhibiting activity of sulfate reducing bacteria in oil field surface water and agent used thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101338180B (en) * | 2008-08-07 | 2011-02-09 | 中国石油天然气股份有限公司 | Sulfur ion passivating agent for processing aging oil and method for preparing same |
| CN101338218B (en) * | 2008-08-07 | 2012-07-18 | 中国石油天然气股份有限公司 | Biochemical emulsion breaker |
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| US4681687A (en) * | 1986-10-20 | 1987-07-21 | Nalco Chemical Company | Use of alkali metal nitrites to inhibit H2 S formation in flue gas desulfurization system sludges |
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