Bharat Mody, R. Scott McKitrick, & John Lambillotte, Profile Control Services
Crosslinked polyacrylamides have proven themselves to be successful, when properly applied, in shutting off water-producing zones and thief zones in a variety of formations. The same principles that allow polyacrylamides to inhibit water movement effectively in pay zones should also be helpful in controlling fluid movement in a variety of situations such as: 1. Low injection rates of 0.25 to 1.5 BPM 2. Microannulus leaks 3. Casing shoe and liner top leaks 4. Mechanically induced holes or corrosion in casing 5. Potential bridging of solids in commercial squeeze fluids which may result in limited penetration or several attempts before a successful squeeze is achieved 6. Fresh water-sensitive formations requiring controlled pH.