05.07.2009
A type of reservoir capable of holding oil and gas, formed by a change in characteristics of the formation – loss of porosity and permeability, or a break in its continuity, which forms the trap or reservoir.
A geologically directed drilling effort to obtain information pertaining to a specific geological condition that might lead toward the discovery of an accumulation of hydrocarbons. Such wells are customarily drilled without the intention of being completed for hydrocarbon production. This classification also includes tests identified as core tests and all types of expendable holes related to hydrocarbon exploration.
Test that is carried out to acquire data regarding resource productivity, often carried out by companies to gain geologic information prior to the initial offshore lease sale
The sequence of sedimentary rock layers found in a specific geographic area, arranged in the order of their deposition
A stratigraphic column is a graphical representation of the stratigraphy of a particular area. It is a drawing done by a geologist that describes what rocks in a cliff wall or underground look like. This allows other geologists, who have never seen these rocks in person, to understand the geology of that area, and perhaps even decide whether or not there is the potential for oil or natural gas to exist in these rocks.
The formation, accumulation, or deposition of materials in layers, such as layers of fresh water overlying higher salinity water (saltwater) in estuaries.
Although hydrocarbons have been discovered, they may remain stranded, namely they cannot be developed for a number of potential reasons, such as due to geopolitical problems, difficulties in transporting the reserves to the market place economically. Indeed, although a discovery has been made it is not always feasible to monetize it
When a stress is applied to a rock, deformation may occur, depending on the rate and the amount of stress. Strain is the change in shape or volume of a body as a result of stress