DEVELOPMENT OF A NEW WATER SHUTOFF AGENT IN LOW PERMEABILITY FRACTURED RESERVOIR

Water shutoff agent will leak along fracture in low permeability fractured reservoir, the new developed water shutoff agent can occur once cross-link reaction, and form 3-D networks cross-linked polymer, which will decrease leakage of water shutoff agent in fracture. At reservoir temperature, it may gradually occur twice cross-link reaction, after studying on component and quantity, obtained gel recipe of once cross-link polymer and twice cross-link polymer.