A Deposit Core Analysis   A Comparison in Methods

A deposit core analysis is a method in which the geophysical discipline takes samples from strata of earth, rock, or soil. There are several types of core analysis which vary in degree in accuracy. One of the most intricate systems for core analysis is the core gamma core analysis that delivers the results in a total and spectral realm through the use of gamma radiation.

There are even portable gamma core analytical devices that allow the scientists to test the density of the core by counting the y flux attenuated by the core. This allows for more diversity in the field and allows for more accuracy in the depot core analysis.

Another type of depot core analysis is porosity and permeability. The porosity is a measurement of how much open space there is in a rock. The space measured during core analysis can be between grains in the rock or between cavities or breaks within the rock or core.

The permeability is another analytical measurement that corresponds with porosity by testing how easy water can move between the before mentioned cracks. The variance in pressure in which the water is forced through the cracks or grains can be as low as 1 psi and as tremendous as 10,000 psi.

Slabbing is another technique that delivers a radial or band saw result that will allow the core analysis to take on an interior look into the rock or soil. This is the most popular core sample analysis technique because it allows the researcher or scientist to analyze the intricate by looking them directly or to study using enhanced digital imaging.

The only drawback to this method is that some cutting core analysis machinery leave oil residue that could deflect from the true readings and validity of the sample. New techniques in lubricant and coolants have reduced the chance of sample damage.

Sometimes there are more extensive and intrusive sample analyzing that cause for a full diameter core analysis. Here rocks such as carbonates or vulgar rock can be difficult when plug type small analysis is used. A deeper and more all inclusive core analysis is needed for this type of rock.

The difference between core plug, full diameter, and whole core analysis is the length of where the sample is taken and how detailed the analysis will be. The core plug will separate a two foot core sample into six inch sections and then a one and one half inch plug is removed. The full diameter core analysis will take the six inch sections of the two foot piece, but does not extend to taking samples from those pieces. The whole core analysis is the entire 2 ft core sample as the sample itself.

A core sample can be use d to determine the conditions of the earth and the rock when the rock was formed or was on the surface of the earth. Each core sample analysis can yield the type of flora and fauna the earth held and what kind of atmosphere existed during that time.