Peneplain

Gently undulating, almost featureless plain that, in principle, would be produced by fluvial erosion that would, in the course of geologic time, reduce the land almost to baselevel (sea level), leaving so little gradient that essentially no more erosion could occur

Perforate; Perforation; Perforate the well casing; Perforate the formation

Create a hole in the casing or liner to achieve efficient communication between the reservoir and the wellbore. A specialized crew transports and operates the perforating equipment. Upon arrival to the site, the tools are assembled, then lowered into the well by a wireline unit or conveyed by tubing. Then, a specialized gun shoots small …

Petrol price, price of petrol, price of gasoline

Gasoline prices are affected by a number of factors from supply and demand, taxes, politics, to the weather. Refineries buy crude oil based on the best available current price (which in turn is affected by a large number of factors on both the demand and supply side of the equation). Different types of gasoline such …

Petroleum

A generic term applied to oil and oil products in all forms, such as crude oil, unfinished oils, petroleum products, natural gas, plant liquids, and non-hydrocarbon compounds blended into finished petroleum products. Complex mixture of naturally occurring hydrocarbon compounds found in rock. Petroleum can range from solid to gas, but the term is generally used …

Peak load control (electricity)

Compared with the supply-side option through increasing generation capacity and upgrading transmission and distribution systems, demand-side management including control of peak load is more cost-effective. Peak-load control is a way by which consumers modify their level and pattern of electricity consumption to shed their peak electricity usage or shift their usage from peak to off-peak …