Upstream — Process Challenge

Completion & Workover Brines

Completion and workover crews need solids-free, density-specified clear brines to hold hydrostatic well control while perforating, gravel-packing or running tubing without damaging the producing formation. Density is dialed in by chemistry (CaCl2 through CaBr2 to ZnBr2), so operators buy these brines by the tote and tanker against a target pounds-per-gallon spec
Updated Jun 2026
Solution Approach

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Treatment Workflow
1
System Assessment
Characterize operating conditions — fluid composition, temperature, pressure, flow, and H2S/CO2/water cut — and benchmark current treatment performance.
2
Chemistry Selection
Match scale and corrosion inhibitors, biocides, or demulsifiers to the operating envelope, factoring compatibility, regulatory constraints, and downstream impacts.
3
Field Trial & Dosing
Determine treat rates through bottle and field trials, and configure continuous or batch delivery and packaging (drums, totes, ISO tanks) to logistics.
4
Monitoring & Adjustment
Track corrosion coupon/ER rates, residual inhibitor, and separator and water-quality performance, adjusting chemistry and dose as wells change.
Recommended Chemistries (5)
Calcium Chloride
CAS 10043-52-4
Specialty Additives
Viscosity Modification
Solids-free clear brine to roughly 11.6 lb/gal that provides hydrostatic well control without the formation damage of weighted muds
Melting Point: 782 °C   Boiling Point: 1935 °C   Density: 2.15 at 20 °C
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Calcium bromide (CaBr2)
CAS 7789-41-5
Extends clear-brine density to roughly 15.1 lb/gal and is blended with CaCl2 to hit intermediate completion-fluid densities. (source on demand)
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Sodium bromide (NaBr)
CAS 7647-15-6
Monovalent clear brine (~12.5 lb/gal) used where divalent calcium would scale or be incompatible with the formation or treatment chemistry. (source on demand)
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Zinc bromide (ZnBr2)
CAS 7699-45-8
High-density clear brine reaching ~19+ lb/gal (blended with CaBr2/CaCl2) for high-pressure well control. (source on demand)
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Ammonium Bisulfite, 60%
CAS 10192-30-0
Acids & Salts
Preservation
2693 (AMMONIUM BISULFITE, SOLID) · Class
Oxygen scavenger dosed into the brine package to remove dissolved O2 and limit corrosion of downhole tubulars during completion
Melting Point: -10 °C   Boiling Point: Sublimates at 150 °C   Density: 2.03 at 20 °C 1.40 (72% aqueous solution)
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Need help selecting the right chemistry?

Our team can help with grade selection, dosage guidance, and multi-origin sourcing.

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