Developing and Designing the Drill-in Fluids to Mitigate Formation Damage

Formation damage is one of the most important concerns in oil and gas industry. To drill the reservoir section, drill-in fluids should be designed with appropriate physical and chemical properties to mitigate formation damage which results in failure in field analyses. As the number of horizontal wells and extended reach wells and also vertical ones with open hole completions increases the need for a specialized drilling fluid to drill the reservoir section efficiently increases as well. The properties of drill-in fluids should be studied before taking part in the drilling operation. These properties are mudcake properties, filtrate and spurt loss characteristics, types of bridging agents, particle size distribution and clean up process. These are the most important aspects of appropriate drill-in fluid which should be taken in account to drill the reservoir section effectively.