Theoretical and Experimental Antiscaling Performance Study of Several Inhibitors to Prevent Barium Sulfate Formation during Water Injection in Oil Reservoirs

Figure 3

SEM micrographs of BaSO₄ precipitates (a) in the absence of inhibitor, (b) in the presence of 80 mg/L of DTPMP, (c) in the presence of 80 mg/L EDTMPS, and (d) in the presence of 80 mg/L DTPA-5Na.

(a)

(b)

(c)

(d)