A visual investigation of different pollutants on the rheological properties of sodium/potassium formate fluids

Nowadays, the adverse effect of drilling operation performances on the environment is considered as one of the major concern of petroleum industries which should be taken into the consideration to virtually eliminate the unnecessary expenses of improving the wasting quality before entering to the environment. Volume and toxicity of discharged materials evaluate surface discharge severity. The ubiquitous utilization of formate fluids has revolutionized the way petroleum industries have conquered the lower drilling inefficiencies. We investigated the profound impact of different pollutants on the potassium/sodium formate fluids using experimental tests. The particular sample for mud pollution test was formate fluid with starch biopolymers. To do this, five samples of formate fluids were made, and each of them was polluted by several pollutants such as cement, lime, acid, alkali and stucco. Consequently, rheological properties and the pH changes and their effect on the formate fluids were evaluated.