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A kind of biological activator for oilfield reinjection water treatment and preparation method thereof

A biological activator and oilfield reinjection water technology, which is applied in biological water/sewage treatment, special compound water treatment, water/sludge/sewage treatment, etc., can solve the problems of environmental pollution load, bacterial resistance, etc., and achieve reduction Effects of pollution load, corrosion reduction, and recovery enhancement

Active Publication Date: 2020-07-24
北京百恒达石油技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the embodiments of the present invention, a bioactivator for oil field reinjection water treatment and its preparation method are provided, which solves the problem that bacteria are prone to develop drug resistance and bring pollution load to the environment during the oil field reinjection water treatment process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, the embodiment of the present invention provides a kind of biological activator for oilfield reinjection water treatment, is made up of nitrate, nitrite, molybdate, imidazoline corrosion inhibitor and denitrifying bacteria, and according to the table 1 below Display the ratio for deployment.

[0022] Table 1

[0023] name unit quantity Nitrate kg 10 Nitrite kg 50 molybdate kg 2 imidazoline corrosion inhibitor kg 2 denitrifying bacteria kg 2 water kg 100

Embodiment 2

[0024] Embodiment 2, the embodiment of the present invention provides a kind of biological activator for oilfield reinjection water treatment, is made up of nitrate, nitrite, molybdate, imidazoline corrosion inhibitor and denitrifying bacteria, and according to the table 2 below Display the ratio for deployment.

[0025] Table 2

[0026] name unit quantity Nitrate kg 30 Nitrite kg 80 molybdate kg 5 imidazoline corrosion inhibitor kg 5 denitrifying bacteria kg 5 water kg 100

Embodiment 3

[0027] Embodiment 3, the embodiment of the present invention provides a kind of biological activator for oil field reinjection water treatment, is made up of nitrate, nitrite, molybdate, imidazoline corrosion inhibitor and denitrifying bacteria, and according to the table 3 below Display the ratio for deployment.

[0028] table 3

[0029] name unit quantity Nitrate kg 15 Nitrite kg 60 molybdate kg 3 imidazoline corrosion inhibitor kg 3 denitrifying bacteria kg 3 water kg 100

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PUM

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Abstract

The invention provides an oilfield reinjection water treatment material and method. The oilfield reinjection water treatment method mainly comprises nitrate, nitrite, molybdate, an imidazoline inhibitor and denitrifying bacteria. The oilfield reinjection water treatment material and method have the beneficial effects that a mixed solution of a low-concentration nitrate mixture is poured into a reservoir to effectively replace sulfate to be used as an electron acceptor; the quantity of natural nitrate-reducing bacteria (NRB) is increased, and VFA (Volatile Fatty Acid) is effectively utilized, so that SRB (Sulfate Reducting Bacteria) can be inhibited and finally replaced. According to the abovementioned technology, few bioactivators are introduced to activate a large number of indigenous microbes in the reservoir to breed, so that the purposes of inhibiting bacteria, controlling sulfur, reducing corrosion and increasing petroleum recovery can be achieved, and as a result, the pollution load is reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield reinjection water, in particular to a biological activator for oilfield reinjection water treatment and a preparation method thereof. Background technique [0002] Hydrogen sulfide is present in most oil reservoirs and oil and gas production systems due to the action of sulfate-reducing bacteria. SRB and the hydrogen sulfide it produces are a major cause of high reservoir development costs and a host of operational problems, including reservoir acidification, sulfide corrosion, plugging of iron sulfide formations, reduced production and health, safety and environmental hazards. The problem of biogenic sulfides in the petroleum industry is particularly serious, which has caused serious economic losses, not only increasing the cost of microbial-induced corrosion, but also causing serious harm to human health and the environment. Including: accelerated corrosion and equipment damage, increased equi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
CPCC02F3/34C02F2303/08C02F2305/06
Inventor 窦红梅陈广强司博
Owner 北京百恒达石油技术有限公司