Polyanionic Cellulose (PAC) Polymer
Properties:
Polyanionic cellulose (PAC) is a kind of nonionic cellulose ether. The PAC polymer featured the properties of high purity, high DS, particularly high viscosity (PAC-HV), or low viscosity (PAC-LV). These products are demi-natural polymer additive, thickening agent, filtrate reducer.
Polyanionic cellulose is an indispensable product for drilling mud making. It is a high purity product. The water solution of this PAC polymer powder is transparent and viscid. As a water-soluble polymer, polyanionic cellulose dissolves immediately in cold/hot water. And it can be used as a thickening agent, rheology controller, bond, stabilizer, colloid protector, suspending agent, and filtrate reducer.
Polyanionic cellulose is a good drilling mud additive. It is also an important material for confecting well liquid, a high mud volume product that featured high acid-resistance and salt-resistance ability. PAC is a good filtrate reducer with the capacity of increasing viscosity and anti-high temperature (150°C) in the freshwater, seawater, or even saturated brine well-completion liquid. This polymer is suitable for confecting the completion fluid with these 3 kinds of water above.
Molecular Formula:
[C6H7O2(OH)2CH2COONa]n
Structure Formula:
Specifications:
| Item | Standard | ||
|---|---|---|---|
| PAC-LV | PAC-HV | ||
| Appearance | Freely flowable powder | Freely flowable powder | |
| pH | 6.0-8.0 | 6.0-8.0 | |
| Purity | 95% Min. | 95% Min. | |
| Moisture | 10% Max. | 10% Max. | |
| D.S. | 0.90 Min. | 0.90 Min. | |
| Viscosity Brookfield 1% | 50 Max. | 1500 Min. | |
| API Fluid Lose | Increase 0.57% | 25.0ml Max. | 20.0ml Max. |
| Increase 0.86% | 15.0ml Max. | 15.0ml Max. | |
| Increase 1.14% | 10.0ml Max. | 10.0ml Max. | |
| YP Value | Increase 0.57% | 0.5 Max. | 2.4 Min. |
| Increase 0.86% | 1.0 Max. | 9.6 Min. | |
| Increase 1.14% | 1.5 Max. | 19.2 Min. | |
Uses:
PAC-HV is for water-based drilling fluids. It can effectively reduce the filtration rate of many water-based oil and gas drilling fluids. And the high viscosity PAC polymer may also be used to increase and stabilize viscosity to improve hole cleaning and suspension properties in a wide variety of fluid environments.
PAC-LV is for use in solids-laden, water-based drilling fluids, which can effectively reduce the filtration rate of many water-based drilling fluids. The low viscosity PAC polymer can not cause significant increases in viscosity or gel strength.
PAC R is a cost-effective additive to reduce the API filtration rate of many water-based drilling fluids. Such as freshwater, seawater, saturated saltwater, and solids-free brines, native mud, flocculated mud, inhibited mud, and contaminated systems. PAC R increases and stabilizes viscosity to improve rheology, wellhole cleaning, and suspension property by coating and encapsulating cuttings and solids of drilling fluids. PAC R is effective over a wide range of pH environments. It lubricates solids in the system, improves wall cake characteristics, and reduces the potential for the stuck pipe.
Packing and Storage:
Packed in multiply paper bags or fiber drums (25KG), or as per customer requirement. Keep dry.
Note:
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