1. What is oilfield equipment protective biocide

Oilfield equipment protective biocide is a chemical agent specially used to protect oilfield equipment from microbial invasion. During the development and operation of oil fields, microorganisms such as sulfate-reducing bacteria (SRB), iron bacteria (FB) and saprophytic bacteria (TGB) will breed and multiply. These microorganisms will not only cause corrosion of oilfield equipment, but also cause pipeline blockage, sludge accumulation and other problems, seriously affecting the production efficiency and service life of oilfields. Therefore, oilfield equipment protective biocide came into being. It can effectively inhibit or kill these harmful microorganisms, thereby protecting oilfield equipment and ensuring the long-term stable production of oilfields.

2. Characteristics of oilfield equipment protective biocide

High-efficiency bactericidal property: Oilfield equipment protective biocide has a strong bactericidal ability, which can quickly and effectively kill or inhibit a variety of harmful microorganisms, such as sulfate-reducing bacteria, iron bacteria and saprophytic bacteria, thereby reducing equipment corrosion and pipeline blockage.

Low toxicity and easy degradation: Most modern oilfield equipment protective biocide are low in toxicity and easy to degrade, are environmentally friendly, and meet environmental protection requirements. This not only reduces the health risks to operators, but also reduces the potential harm to the surrounding ecological environment.

Broad spectrum: This type of fungicide usually has a broad-spectrum bactericidal effect and can act on many types of microorganisms, not just a specific type. This enables them to still play a reliable protective role when facing a complex microbial environment.

Good compatibility: Oilfield equipment protective biocide can be used well with other oilfield chemicals such as corrosion inhibitors and scale inhibitors, and will not interfere with each other, thereby achieving comprehensive equipment protection. This good compatibility makes them more flexible in practical applications and can better meet the various needs of oilfield production.

Corrosion inhibition: Some oilfield equipment protective biocide also have a certain corrosion inhibition effect, which can reduce the corrosion of equipment while sterilizing, further extending the service life of the equipment.

3. Classification of protective biocide for oilfield equipment

Benzalkonium chloride

Molecular formula: C₁₈H₃₆ClN (taking dodecyltrimethylammonium chloride as an example)

Characteristics: Benzalkonium chloride is a common quaternary ammonium salt fungicide with good surface activity and bactericidal properties. It adsorbs cations on the surface of negatively charged bacteria, changes the permeability of bacterial cell walls, and thus achieves a bactericidal effect. In addition, benzalkonium chloride also has a certain corrosion inhibition effect, which can reduce the corrosion of equipment.

Application: It is widely used in oilfield water injection and oil production systems, and has a significant inhibitory effect on sulfate-reducing bacteria, iron bacteria, etc.

Didecyldimethyl ammonium chloride

Molecular formula: C₂₀H₄₂ClN

Characteristics: Didecyldimethyl ammonium chloride is also a quaternary ammonium salt fungicide with strong bactericidal ability, which can effectively inhibit the growth and reproduction of microorganisms. It has good solubility in water, is not affected by water hardness, and is not easy to produce drug resistance when used in large quantities.

Application: Commonly used in oilfield wastewater treatment and reinjection systems, it has a significant effect on preventing pipeline blockage and equipment corrosion caused by microorganisms.

Dodecyl dipropylene triamine

Molecular formula: C₂₁H₄₅N

Characteristics: Dodecyl dipropylene triamine is an amine compound with strong bactericidal properties. It can destroy the cell membrane structure of microorganisms, causing the cell contents to leak out, thereby killing microorganisms. In addition, the compound also has a certain corrosion inhibition effect, which can reduce the corrosion of equipment to a certain extent.

Application: Suitable for oilfield water injection systems and oil production systems, it has a good inhibitory effect on a variety of microorganisms and can effectively protect oilfield equipment.

4. Application of oilfield equipment protective biocide

Oilfield equipment protective biocide play a vital role in oilfield production, which is mainly reflected in the following aspects:

Control microbial growth: By inhibiting or killing harmful microorganisms in the oilfield production system, such as sulfate-reducing bacteria, iron bacteria and saprophytes, the corrosion and blockage of equipment by microbial metabolites are reduced.

Prevent metal corrosion: Many oilfield equipment protective biocide have a corrosion-inhibiting effect, can form a protective film on the surface of the equipment, reduce the erosion of metals by microorganisms and corrosive substances, and thus extend the service life of the equipment.

Reduce pipeline blockage: The growth and reproduction of microorganisms will lead to the accumulation of sludge and biofilm, which will in turn cause pipeline blockage. Oilfield equipment protective biocide can effectively inhibit the growth of microorganisms, reduce the generation of sludge, and keep the pipeline unobstructed.

Improve oilfield production efficiency: By reducing equipment corrosion and pipeline blockage, ensure the normal operation of the oilfield production system, thereby improving the production efficiency and quality of the oilfield.

Reduce maintenance costs: Due to the reduction of equipment corrosion and blockage problems, the maintenance frequency and maintenance cost of oilfield equipment are greatly reduced, providing a strong economic guarantee for the long-term stable operation of the oilfield.

As an important chemical in oilfield production, the importance of oilfield equipment protective biocide is self-evident. With the continuous development of oilfield mining technology and increasingly stringent environmental protection requirements, the research and application of oilfield equipment protective biocide will continue to deepen, providing more powerful support for the efficient, safe and environmentally friendly production of oilfields.

Biocide Supplier

UNPChemicals is a professional oilfield chemical manufacturer, with products covering drilling, completion, oil production, gathering and transportation, etc., and has won the trust of customers with advanced technology, strict quality control and high-quality services. We are committed to personalized solutions to help oilfields develop efficiently.