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Emulsifier For Acidizing

Brief Introduction:

Be used to improve matrix acidizing and acid fracturing treatments in high-temperature reservoirs.

GENERAL DESCRIPTON

AZEM-01 emulsion fluid for high temperatures improves your matrix acidizing and acid fracturing treatments in high-temperature reservoirs. AZEM-01 fluid is a viscous, highly retarded HCI system designed to overcome acid penetration problems in stimulating reservoirs above 2000F (930C).

Standard hydrochloric acid reacts very quickly in carbonate formations. The reaction is so rapid in high temperatures that it is impossible for acid to penetrate , or wormhole, more than a few inches into the formation. In such cases, the acid is rendered ineffective in stimulating the well. Deep live-acid penetration can be achieved if the acid reaction rate is retarded feat accomplished with AZEM-01 emulsion high-temperature system. This oil-external emulsion is formed with a 70:30 HCI-to-oil ratio, stabilized with an emulsifier, HCI concentrations ranging from 15 to 28% may be used in either a batch or continuous mix system. Typical concentrations range from 2.0 to 3.0% by total volume of acid solution.

REACTION RETARDATION

AZEM-01 high-temperature emulsion is significantly retarded with respect to HCI. The retardation depends on temperature, acid concentration, flow regime (laminar, transitional or turbulent) and type of rock (dolomite or limestone). Between 2000F and 3000F (930C and 1490C) the HCI-limestone and the HCI-dolomite reactions are mass transfer controlled.

 

EMULSION STABILITY

The stability of AZEM-01 fluid is temperature dependent. Quality of oil phase and mixing time also affect the emulsion stability.

Items

Specifications

Appearance

Colorless to yellow brown liquid.

Density, 200C,        g/cm3

0.80 - 1.05

Flash point,            0C

≥35

Pour point,             0C

≤5

Solubility in acid

Qualified

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