Increasing water production rate is from one of the well knownmain problems that face any oil producer in world. Although this problem most happen old wells, can also new drilled wells as well. It causes differenteconomic for produced companies. First, increasing affectsproduced performance and reduced their lifetime. The high percentage wellbore hydrostatic pressure (weight fluid column) which...

This work aims at evaluating advancement in water shut-off performance using nanocomposite hydrogel (PVP-ZnO:RF) prepared from PolyVinylPyrrolidone (PVP); used as polymer, Resorcinol-Formaldehyde (RF); a crosslinker and nano Zinc Oxide (ZnO); strength modifier it was compared with conventional (PVP:RF) i.e. , without ZnO nanofiller. The ZnO, nanofiller this work, successfully bio-synthesized ( ...

BACKGROUND AND AIMS Dental handpiece is a source of contamination because it is in constant touch with the oral cavity. Sterilization does not seem to be sufficient to prevent penetration of microorganisms into air and water lines of the unit, because negative pressure developed by valves (which are placed in water outlets) and post shut-off inertial rotation of handpiece result in water and de...

a key parameter for the application of polymer gels in water shut off treatment is the adsorption of polymer gel onto the rock surface. so, the adsorption properties of a nanocomposite hydrogel were discussed in this research by crosslinking of sulfonated polyacrylamide/sodium montmorillonite aqueous solutions with chromium triacetate. the x-ray diffraction patterns indicated that exfoliated ty...

Magnetic fabric analyses from two North Atlantic drift deposits provide proxies for determining relative variations in the strength of abyssal flow over the last 10 my. The data show a cessation of current-controlled sedimentation at the shallower Feni Drift (2417 m) at the time of onset of Northern Hemisphere glaciation (2.6 Ma). Drift formation ended nearly 2 my earlier (4.2 Ma) at the deeper...