What is nonionic polyacrylamide (NPAM) gel?

Nonionic polyacrylamide (NPAM) gel was prepared for in-depth profile control. A compact three dimensional network structure was formed in the bulk gel system. Retention, adsorption and bridging across the pore throats occur in high permeability zones. The NPAM gel shows superior high temperature resistant. °C.

Is non ionic polyacrylamide a water soluble polymer?

Non-ionic polyacrylamide is a water-soluble high molecular polymer or polyelectrolyte. The characteristics of nonionic polyacrylamide PAM can be simply divided into the following three points: It has relatively good water solubility and can be completely dissolved even in cold water.

What is nonionic polyacrylamide PAM?

Nonionic polyacrylamide PAM is mainly used for flocculation and sedimentation of various industrial wastewater, and clarification and disposal of precipitation. Many friends have little knowledge of this type of polyacrylamide. Today, I will introduce the characteristics, efficacy, and usage of nonionic polyacrylamide PAM.

What is non ionic polyacrylamide used for?

Non-ionic polyacrylamide, when combined with cellulose, and added with certain chemical additives, is widely used as an oilfield profile control and water blocking agent. It is used as the basic raw material for soil moisturizers and various modified polyacrylamides.

What is the difference between NPAM gel and controllable gel?

The adjusted gelation time ensures that the gel system enters the in-depth formation, whereas the controllable gel strength gives the gel system enough strength to plug high permeability zones. The NPAM gel has good shearing stability and thermal stability which can be cross-linked in high salinity and temperature reservoirs.

Does NPAM gel strength affect gelation time?

To study the effect of various parameters on the gelation time of the NPAM gel, a gel strength code method was conducted to determine gelation time ( Sydank and Argabright, 1987 ). The gel strength during development of gelation kinetics was expressed as an alphabetic code of A through I which is shown in Table 1.