POLYMER FLOODING

Choosing the right product and technology for individual reservoirs and applying it at the right time is extremely important in maximizing oil recovery.

Chinafloc  was established since 2002, with strong focus in  polyacrylamide R&D and manufacturing for enhanced oil recovery industry.  We use our expertise and on-site experiences to help our customers evaluate the reservoir characteristicsto design the most cost effective program. Our lab work, pilot testing and application methodology will help bring success to full field implementation

The complexity of the geology and other characteristics of oil reservoirs (such as temperature, salinity and hardness of the water in the reservoir) mean that different Polymer products are required for different reservoirs. It is important to choose the suitable product to ensure technical success while minimize the cost of the chemicals and operation costs to ensure both technical and economical success.Each of polymers’ chemical property is linked to economic and technical success of a polymer flooding projects, for example, polymer’s ability to dissolve under target injection water directly linked to the facility design and the injectivity of polymers over time; polymer’s ability to maintain high viscosity in situ over time tells the real mobility ratio you will gain throughout the reservoir; polymer bulk viscosity, shear resistance, adsorption, structures, hydrolysis degree etc are all the parameters we look at and work with our customers to understand the chemistry and to ensure a successful polymer flooding project.

We work with our customers closely to evaluate their reservoir conditions, we believe only suitable polymers are able to maximize the oil recovery.

Choose The Right Polymer Product For:

Low salinity and temperature reservoirs
Low salinity and temperature reservoirs especially with good permeability ranges are suitable for polymer flooding. Regular HPAM can meet the requirement for chemical compatibility with the injection water and formation conditions. Products are suitable for this type of reservoirs includes the following:
* Linear structure;
* High viscosity under target injection and formation brine;
* Good dissolution under target injection brine;
* Low/no adsorption;

we recommend our models of Chinafloc A2320 and Chinafloc A3020

High salinity and High temperature reservoirs
it is diffuclt for polymers to maintain its linear chain overtime, thus to maintain its viscosity and ability to propagate in the reservoir under hign salinity situation. High salinity also takes longer for regular HPAM to reach full dissolution state thus increase the facility investment and higher chance of experiencing injectivity issue over time.
High temperature can  accelerates the chemical reaction between polymers and divalent or multi-valent ions in the formation water, it also hydrolyzes polymers in situ which will change its viscosity behaviors with different hydrolysis degrees.
Polymers need to be carefully selected for this type of reservoir to ensure technical success of a polymer flooding project. Products are suitable for this type of reservoirs include the following:
* Linear structure;
* High viscosity under target formation brine and temperature conditions;
* Good long term stability over time;
* Good dissolution under target injection brine;
* Low/no adsorption;
* Other factors to consider: low surface viscosity and increase viscosity insitu over time;
* Polymer propagation in the reservoir to ensure good sweep efficiency;
* Minimize polymer emulsion breaking issues;

we recommend our models of Chinafloc A2525.