f Formation Damage Evaluation by Secondary & Tertiary Precipitation during Sand Stone Acidization: A Laboratory Study

The Nandasan field is producing oil & gas since 1969 with little problem as it is having good porosity and permeability. Its multi layered mehsana formation comprises of 45%silicon, 9%aluminium, 18%iron, 0.23%calcium, 0.47%potassium ,12% other heavy metal shows presence Montmorillonite, Kaolinite and Chamosite clay.