The Oil and Gas Sector is usually divided into three main segments: 1.Upstream (Exploration & Production)This stage focuses on finding and extracting oil and gas from underground reservoirs.Main activitiesGeological surveysDrilling wellsOil and gas extractionExample companiesExxonMobilSchlumbergerONGC 2.Midstream (Transportation & Storage)This stage deals with transporting crude oil and natural gas from production sites to refineries.Main activitiesPipelinesOil tankersStorage […]

Oil and gas extraction involves finding reserves, drilling wells, casing them with steel and cement, and then using natural pressure, pumps, or enhanced recovery (like fracking or gas/chemical injection) to bring the oil and gas to the surface, separating them, and transporting them for processing, a process covered by the “upstream” sector. This video provides a […]

When Hydrogen sulfide is detected at surface during drilling, the operation enters a controlled sour-environment mode where technical discipline becomes critical. Surface detection usually means the drilled formation contains sour fluids or gas, and the circulating mud system is transporting dissolved or free H₂S to surface through the annulus. As pressure drops across the flow […]