Cationic Additive in Acid and Fracturing Fluid

Properties:

The cationic additive in acid and fracturing fluid is the cationic quaternary ammonium surfactant polymer, and the appearance is colorless to pale yellow viscose liquid. It is water-soluble, non-toxic, has good hydrolytic stability, and keeps stable in wide pH. Freezing point:-2.8℃, specific weight:1.04g/cm³,resolve temperature: 280~300℃.

Clay minerals in the rock stratum will hydrate, and particles will expand and migrate during fracturing and acidification, which results in stratum plugging and degradation of oil recovery.

Cationic Additive in Acid and Fracturing Fluid inhibits clay's expansion and particle migration, raising the effect of fracturing and acidification and prolonging the fracturing and acid-treating period. This Cationic additive in acid and fracturing cooperate with other agents well, is prepared conveniently and it's non-toxic and tasteless.

In acid fluids and fracturing fluids, cationic additives represent a critical class of oilfield chemicals. They are primarily used to enhance operational performance, protect formation integrity, and increase hydrocarbon production.

Strong electro-neutralization and adsorption capabilities. Cationic additives typically carry a positive charge. They effectively neutralize the negative charges on clay mineral surfaces within formations. This inhibits their hydration, swelling, and particle migration, thereby maintaining formation permeability.

Excellent thickening, temperature resistance, and shear stability. Certain cationic polymers provide effective thickening in acid or fracturing fluids while maintaining stable viscosity under high-temperature and high-shear conditions.

Specification:

Application:

In fracturing and acidizing operations during petroleum production, the core function of fracturing fluid is to penetrate formations to create fractures and enhance rock permeability. However, these operations often encounter challenges such as clay mineral hydration and swelling, as well as particle migration. Cationic additives can specifically address these issues while also providing multiple functions.

1. Thickening and Stabilization in Acidizing-Fracturing Fluids

Cationic polymers serve as acid fluid thickeners. They enhance acid fluid viscosity, delay acid-rock reaction rates, and improve acid penetration while simultaneously preventing clay swelling and particle migration, ensuring effective acidizing operations.

2. Anti-Swelling and Polymer Blocking in Fracturing

Cationic additives function as anti-swelling agents, effectively stabilizing water-sensitive formations with high clay content. They prevent clay hydration swelling from disrupting operations. In polymer flooding scenarios, they also achieve “cationic polymer blocking,” reducing permeability in high-permeability zones. This optimizes displacement efficiency and enhances overall oil recovery.

3. Clean Viscous Support in Fracturing Fluids

Cationic viscoelastic surfactants (e.g., quaternary ammonium salts like VES) are key components for clean fracturing fluids. They form worm-like micelle structures within the system, imparting high viscoelasticity and superior sand-carrying capacity to fracturing fluids. These additives offer advantages of easy recovery and minimal residue, reducing secondary damage to formations.

Attention:

The core function of these cationic additives is to suppress clay hydration swelling and particle migration. They maintain the stability of clays and minerals within formations, thereby extending the duration of fracturing and acidizing operations. These agents can also function as swelling inhibitors during water flooding processes or act as “cationic blocking agents” that react with “reactive substances” in oil production to further regulate formation permeability. It is important to note that specific dosage and application methods must be determined experimentally prior to use to ensure both effectiveness and safety.

Usage:

Cationic additive in acid and fracturing fluid is applied in water-sensitive sandstone geology, in which the clay content is above 5%, concentration suggested is 0.05~0.5%, this product should be added when the Fracturing thickening agent expanded, then it takes effect after circulation.

When used as a thickening agent in acidic solutions, the typical addition rate ranges from 0.5% to 2.5%. The specific amount depends on the desired viscosity.

Packing and storage:

Cationic additive in acid and fracturing fluid should be packed 200kg plastic drum or 1000kg/IBC drum.

Stored at room temperature, the storage period is one year.

Attention:

(1) Your wise advice about our products will be necessary to improve our qualities and services.

(2) There is no fixed pattern for application technology, therefore, the customer should base on your own technology and the equipment conditions to execute the program and utilize the product.