Petroleum production, recovery of crude oil and, often, associated natural gas from Earth. Less dense than surrounding water, petroleum migrated up from its source beds through porous rock until it was blocked by nonporous rock and trapped by geologic features caused by folding, faulting, and erosion of Earth’s crust.

This is a list of products produced from petroleum. Types of unrefined petroleum include asphalt, bitumen, crude oil, and natural gas. (See also fossil fuel; hydrocarbon; oil; petrochemical; petroleum production; petroleum refining; pitch lake; tar sand.) fuels

Petroleum production - Reservoirs, Drilling, Extraction: Petroleum reservoirs usually start with a formation pressure high enough to force crude oil into the well and sometimes to the surface through the tubing.

Petroleum production - Drilling, Refining, Extraction: Crude oil seeps sometimes appear as a tarlike deposit in a low area—such as the oil springs at Baku, Azerbaijan, on the Caspian Sea, described by Marco Polo. More often they occur as a thin skim of oil on small creeks that pass through an area.

2025年2月5日 · Petroleum - Global, Reserves, Production: Petroleum is not distributed evenly around the world. Slightly less than half of the world’s proven reserves are located in the Middle East (including Iran but not North Africa).

Petroleum production - Formation, Evaluation, Drilling: Advances in technology have occurred in well logging and the evaluation of geological formations more than in any other area of petroleum production.

2025年2月5日 · Petroleum, complex mixture of hydrocarbons that occur in Earth in liquid, gaseous, or solid form. The term is often restricted to the liquid form, commonly called crude oil, but, as a technical term, ‘petroleum’ also refers to natural gas and the viscous or solid form known as bitumen, which is found in tar sands.

Drilling platforms capable of ultradeepwater production—that is, beyond 1,830–2,130 metres (approximately 6,000–7,000 feet) deep—include tension-leg systems and floating production systems (FPS), which can move up and down in response to ocean conditions as semisubmersibles perform.

2025年2月5日 · Petroleum - Major Producers, Refining, Crude Oil: As mentioned above, petroleum resources are not distributed evenly around the world. Indeed, according to estimates published for 2015 by the U.S. Department of Energy, as few as 15 countries account for more than 75 percent of the world’s oil production and hold roughly 93 percent of its ...

Petroleum Production. The production process involves draining the oil and natural gas from the subsurface. Oil and gas can usually flow through the tiny pores in a reservoir rock and into wells because they are very hot and under very high pressure. The high pressure pushes the oil and gas through the rock into the well, which has a lower ...