MECHANICAL STUCK PREVENTION CAUSED BY SHALE SWELLING USING LABORATORY EXPERIMENTS Case study HF121-JK121H well

Abstract

Pipe Sticking is one of the serious problems that the drillers experience during drilling process of oil and gas wells. Pipe Sticking can be divided into two categories: The Differential Stuck and Mechanical Stuck (Shale Swelling). In this Research, we will focus on Mechanical Stuck and the effect of implementing additives on drilling mud to prevent Mechanical Pipe Sticking. This research will investigate the Shale Swelling by using Linear Swell Meter Apparatus. Calcium Carbonate (CaCO3), Potassium Chloride (KCl) and Partially Hydrolyzed Polyacrylamide (PHPA) are used as drilling fluid additives. The experimental investigation furnishes that with the proper combination of these additives, the sticking pipe can be precaution significantly with suitable properties of the drilling fluid required for optimum performance in oil and gas well drilling. We conclude from our experiment that the Potassium Chloride and Partially Hydrolyzed Polyacrylamide succeed in mechanical sticking prevention where Calcium Carbonate (CaCO3) failed.