Method for transforming oil and gas reservoir through silicate bacteria

The invention provides a method for transforming an oil and gas reservoir through silicate bacteria. The method comprises the steps of selecting the appropriate oil and gas reservoir; filling a bacterial solution into an injection well, wherein the bacterial solution contains the silicate bacteria, and the pressure difference of the injection well and an oil production well is ensured to be less than 1 MPa in the bacterial solution injection process; filling 0.05 time of the pore volume of water into the injection well; and conducting well soaking and water injection production. Through the method for transforming the oil and gas reservoir through the silicate bacteria, the oil and gas reservoir can be transformed for a long term, and the recovery ratio of the oil and gas reservoir is increased. 本发明提供了一种利用硅酸盐菌改造油气储层的方法。该方法包括：筛选适用油气储层；向注入井中注入菌液，菌液为含有硅酸盐菌的菌液，注入菌液的过程保证注入井和采油井的压差小于1MPa；向注入井中注入0.05倍孔隙体积的水；焖井，注水生产。本发明的油气储层的改造方法可以长期改造油气储层，提高油气储层的采收率。