Iron Control

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Iron Control
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Drilling Fluids & Mud Oil Field chemicals-81

Iron Control

SKU: RXSOL-81-8167-210
Iron Control
Pack Size / Specification:
210 Ltrs
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Technical Specifications

 

Property Typical Value
Appearance Clear to slightly hazy liquid
Colour Colourless to pale yellow
Odour Mild
pH, neat Typically 2
Specific Gravity @ 25°C Approx. 1.15-1.25
Solubility in Water Completely miscible / dispersible
Flash Point Not normally applicable for aqueous formulation

Application & Dosage

Iron Control Liquid is designed primarily for:

Matrix Acidizing

Used as an additive in acidizing fluids to control dissolved iron generated during contact between acid and tubulars, scale or formation minerals.

Well Stimulation

Helps minimize secondary iron precipitation during stimulation operations as the injected acid reacts and becomes spent.

Wellbore Cleaning

Suitable for treatment fluids used to remove rust, iron oxide deposits and mineral scale from tubing and associated equipment.

Acid Scale Removal

Can be incorporated into acid descaling formulations where dissolution of iron-containing deposits is expected.

Pickling / Tubing Cleaning

Useful during acid pickling and pre-treatment of tubing where significant quantities of iron may enter the cleaning solution.

Acid Pre-Flush

May be incorporated into selected pre-flush formulations where iron stabilization is required prior to the main acid treatment.

Procedure for effective IRON CONTROL during acidic treatment:

The optimum dosage depends on:
  • Expected dissolved iron concentration
  • Ferric-to-ferrous iron ratio
  • Acid concentration
  • Type of acid system
  • Formation mineralogy
  • Calcium concentration
  • Bottom-hole temperature
  • Contact time
  • Amount of rust and iron scale present
  • Shut-in time
General Starting Dosage
 
For preliminary field evaluation:
  • 1-5% by volume of the acid treatment fluid
  • may be evaluated as an initial dosage range.
For systems with significant iron contamination, the dosage should be determined by laboratory testing based on the anticipated iron loading.

Typical Treatment Dosage Guidelines

Expected Iron Loading Suggested Starting Evaluation
Low 1-2% v/v
Moderate 2-3% v/v
High 3-5% v/v
Very high / severe iron contamination Laboratory determination required

Related Information

FUNCTION OF RXSOL Iron Control Liquid in Oilfield and Acid treatment of wells:

Iron Control Liquid works primarily through sequestration and chelation.

Organic complexes dissolved iron and helps reduce the tendency of ferric iron to form insoluble hydroxide deposits as the treatment acid becomes spent.

Its acidity also assists in maintaining a lower-pH environment during the initial stages of treatment.

RXSOL Iron Control has strong sequestring agent capable of forming complexes with a range of multivalent metal ions. Its inclusion supplements the iron-complexing capability of the formulation and assists in controlling dissolved metallic species.

The combination provides broader metal-ion complexing capability than a simple single-component organic acid treatment and is particularly useful where iron contamination is expected from tubulars, rust, scale or formation minerals.