殺菌剤・防腐剤

油田用殺菌剤は、貯留層のサワー化や微生物影響腐食（MIC）を引き起こす細菌、主に硫酸還元菌（SRB）を制御するために、水を含む系へ添加される非酸化性の抗菌有効成分です。 これらは炭化水素相ではなく、産出水、注入水、フラクチャリング流体、貯蔵設備に適用されます。プログラム設計では、系の細菌負荷と温度に合わせた添加量と接触時間に有効成分を組み合わせます。

Glutaraldehyde is the broad-spectrum workhorse for batch and continuous treatment, and THPS is the common choice where sulfide is present because it also helps disperse iron-sulfide deposits. The genuine trade-off is system chemistry: glutaraldehyde performance drops in sulfide-rich and high-pH water, while THPS is more sensitive to oxygen and strong oxidizers. Where a system swings between sour and aerated conditions, operators often alternate actives rather than rely on one.

DBNPA acts quickly and then hydrolyzes, which suits short-contact applications and fracturing systems where a low-persistence active is preferred. Because all three are registered antimicrobial actives, their sale and use are governed by EPA FIFRA registration in the United States and the EU Biocidal Products Regulation in Europe. Confirm the registered uses and approved dose rates for your application and jurisdiction before specifying a product.

• 産出水および圧入水における硫酸塩還元菌(SRB)の制御
• パイプラインおよび貯蔵設備におけるバイオフィルムと微生物腐食（MIC）の抑制
• 水圧破砕流体の防腐
• 塩水処分、圧入、および水処理・水搬送システム
• 水圧試験および配管・容器の休止保管水の処理

• Glutaraldehyde u2014 PubChem
• THPS (Tetrakis(hydroxymethyl)phosphonium sulfate) — PubChem
• DBNPA — PubChem