In order to solve the corrosion problem of production string in process acidizing for purpose production, a new water-based annular protective fluid suitable HTHP acid gas, including H2S-CO2 wells, was developed. Firstly, an appropriate deoxidizer, bactericide, and inhibitor shall be selected according gas. addition, synergism between additives is evaluated. Then, by designing additive ratio, o...

We study the Cauchy problem for chemotaxis Navier-Stokes equations and Keller-Segel-Navier-Stokes system. Local-in-time global-in-time solutions satisfying fundamental properties such as mass conservation nonnegativity preservation are constructed low regularity data in $2$ higher dimensions under suitable conditions. Our initial classes involve a new scale of function space, that is $\Y(\rn)$ ...