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Oilfield water biological treatment agent and its preparation method and use method

A technology for biological treatment and oilfield water, applied in the fields of botanical equipment and methods, biological water/sewage treatment, mining wastewater treatment, etc. The effect of reducing the secondary hydrogen sulfide problem

Inactive Publication Date: 2016-06-22
KARAMAY JINSHAN PETROCHEMICAL LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a biological treatment agent for oilfield water and its preparation method and use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problems in the prior art. Inhibition of sulfate-reducing bacteria in oilfield water The microorganisms introduced in the bacterial liquid product do not really play the role of a rich variety of indigenous beneficial microorganisms, resulting in unsatisfactory inhibition effects and existing methods for inhibiting sulfate-reducing bacteria in oilfield water The problem of high cost and even intensified factors of oil field corrosion

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, the raw material of this oilfield water biological treatment agent contains 0.1% to 5% denitrifying and nitrifying bacteria liquid, 0.05% to 0.5% nitrate, 0.05% to 0.5% nitrite, 0.001% to 0.01% double quaternary ammonium salt type slime stripping agent, 5×10 -7 % to 1×10 -6 % Potassium Permanganate, 1×10 -5 % to 2×10 -5 % of potassium dichromate and the balance of oilfield wastewater containing native denitrifying bacteria and nitrifying bacteria. Oilfield sewage containing original denitrifying bacteria and nitrifying bacteria is used to cultivate and prepare oilfield biological treatment agents. On the one hand, the mineral components contained in oilfield sewage containing original denitrifying bacteria and nitrifying bacteria can make up for oilfield biological treatment. The lack of other nutritional components in the agent is conducive to the advantageous proliferation of the original denitrifying bacteria and nitrifying bacteria...

Embodiment 2

[0018] Embodiment 2, this oil field water biological treatment agent raw material contains 0.1% or 5% denitrification nitrification bacteria liquid, 0.05% or 0.5% nitrate, 0.05% or 0.5% nitrite, 0.001% Or 0.01% double quaternary ammonium salt type slime stripping agent, 5×10 -7 % or 1×10 -6 % Potassium Permanganate, 1×10 -5 % or 2×10 -5 % of potassium dichromate and the remainder of oilfield wastewater containing native denitrifying bacteria and nitrifying bacteria.

Embodiment 3

[0019] Embodiment 3, as the preference of above-mentioned embodiment, denitrifying and nitrifying bacteria liquid is obtained by expanding and cultivating original denitrifying bacteria microorganism and nitrifying bacteria microorganism in oil field sewage, wherein, denitrifying and nitrifying bacteria liquid is obtained by the following method: In parts by weight, 0.1 to 0.5 parts of nitrate, 0.1 to 0.5 parts of nitrite, 0.001 to 0.01 part of biquaternary ammonium salt type slime stripping agent and 98.99 to 99.8 parts of After fully mixing the denitrifying bacteria microorganisms and the oilfield sewage of the nitrifying bacteria microorganisms, culture them in a closed container under the conditions of pH 7 to 8 and temperature 25° C. to 35° C. for 3 days to 15 days to obtain denitrifying nitrifying bacteria liquid. Use the oilfield sewage containing the original denitrifying bacteria and nitrifying bacteria to cultivate and prepare the denitrifying and nitrifying bacteri...

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Abstract

The invention relates to the technical field of sewage treatment agents, and is an oilfield water biological treatment agent and its preparation method and use method. The oilfield water biological treatment agent is obtained by the following preparation method, and the required amount of denitrifying and nitrifying bacteria liquid, nitrate, nitrite, double quaternary ammonium salt type slime stripping agent, oilfield sewage, potassium permanganate, Potassium dichromate and water are fully mixed to obtain oilfield water biological treatment agent. The present invention adopts oilfield sewage to prepare oilfield water biological treatment agent, Can give full play to the richness and utility of indigenous beneficial microorganisms, Make it compete with the remaining sulfate-reducing bacteria with a greater advantage, thereby comprehensively inhibiting the activity and growth of sulfate-reducing bacteria, controlling the production of hydrogen sulfide, and fundamentally inhibiting the growth environment of sulfate-reducing bacteria and changing the path of corrosion Reduces secondary hydrogen sulfide problems caused by sulfate-reducing bacteria while being able to Avoiding factors that increase oilfield corrosion and containment costs 。

Description

technical field [0001] The invention relates to the technical field of sewage treatment agents, and relates to an oilfield water biological treatment agent and its preparation method and use method. Background technique [0002] In the petroleum industry, the corrosion of ground and underground facilities, oil reservoir acidification and sulfide pollution caused by microorganisms are very serious, which have caused serious economic, environmental and safety production problems. The massive reproduction of sulfate-reducing bacteria in the water injection system is the main cause of this hazard. The main means of controlling sulfate-reducing bacteria in oil fields is to add a large amount of chemical fungicides. However, because sulfate-reducing bacteria often coexist with other microorganisms in the polysaccharide gum biofilm produced by microorganisms and are protected, the fungicides are not easy to penetrate, and It is in a reducing environment of hydrogen sulfide, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/54A01N63/00A01P1/00C02F3/34C02F103/10
CPCA01N63/00C02F3/34C02F2103/10C09K8/532C09K8/54C09K2208/20
Inventor 聂春梅方新湘陈爱华赵燕王传萍朱海霞
Owner KARAMAY JINSHAN PETROCHEMICAL LTD CO
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