COMPOSITION FOR FRACTURING AND DISPLACEMENT AND METHOD FOR FRACTURING AND DISPLACEMENT OF TIGHT OIL RESERVOIR

摘要

The present invention relates to the field of oilfield chemistry, and discloses a composition for fracturing and displacement and a method for fracturing and displacement of a tight oil reservoir. The composition contains a pyrrolic compound represented by formula (1) and a laurate; in the formula (1), M⁻ is halide ion, R₁ is C1-C5 linear or branched alkyl, and R₂ is C15-C20 linear or branched alkyl. The composition for fracturing and displacement provided in the present invention has functions of fracturing, solid carrying, imbibition, drainage and oil displacement, so as to maximize the recovery efficiency of tight oil, and attain economic and social benefits by implementing multiple functions with a single composition, saving resources, and reducing cost.;