Selection and Evaluation on Water Shutoff Agent for Screen Pipe Completion Horizontal Well in Zhuang 1 Block

Selection and evaluation lab study of water shutoff agent has been conducted on the basis of the produced water from screen pipe completion horizontal well. With Zhuang 1 block of ShengLi oil field as an example, three kinds of water shutoff agents have been evaluated in lab, including w/w polymer gel,relative permeability correctives and resin of oil-soluble. The result indicates that w/w polymer gel is fit for pit or part well water from horizontal well at middle permeability reservoir, and resin of oil-soluble is fit for multishot water horizontal well shutoff at high permeability reservoir,and relative permerbility correctives is fit for multishot water horizontal well shutoff at middle-low permeability reservoir. These three kinds of water shutoff agents can be taken as examples for the scree well shutoff like Zhuang 1 block.