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Soda Ash is used in water‐base mud as a source of carbonate ions to precipitate calcium, increase pH or flocculate spud mud. Soda Ash is the sodium carbonate Na2CO3 which is soluble in water and dissociates into sodium (Na) and carbonate (CO3) ions in solution.
APPLICATIONS
- Soda Ash is primarily used to reduce soluble calcium in water‐base drilling muds and makeup waters.
- Other uses include increasing pH and flocculating spud muds. Calcium is present in many makeup waters and formations.It can cause flocculation of the mud resulting in increased rheology, gel strengths and fluid loss. High‐filtrate calcium will cause precipitation of calcium‐sensitive additives such as the PHPA polymer which are the most sensitive. Cellulosic polymers PAC HV ,PAC L and CMC are only slightly calcium‐sensitive and tolerate moderate levels of filtrate calcium.
ADVANTAGES
- Widely available and an economical source of carbonate ions to precipitate calcium while increase pH.
- Concentrate chemical; effectively removes calcium in most drilling fluids at small treatment levels
- Effective flocculant for spud muds.
TYPICAL PHYSICAL PROPERTIES
Physical appearance:
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White powder
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| Specific gravity: |
2.51
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| pH: |
11.4
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| Solubility in water: |
51 g / 100 mL at 30°C
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Recommended Treatment :Typical treatments of Soda Ash range from 0.5 to 5.0 kg/m3, depending on the calcium level and water chemistry of the drilling fluid. Generally soda ash is added to water before than all additives. Treatments should be made on an incremental basis to prevent over‐treatment which results in carbonate contamination.
PACKAGING Soda ASH is packaged in 50 kg pp bags
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