Show evaluation - AAPG Wiki
2022年1月21日 · Evaluation of oil in cuttings is performed on unwashed and washed bulk cuttings and on individual grains. Evaluation includes visual inspection and analysis using a microscope and ultraviolet (UV) box. Oil shows are described by their physical properties of visual stain, fluorescence, cut, and odor.
6.3.2.4.2 Solvent Cut Test Procedure - Energistics
2016年11月11日 · Cut color fluorescence and intensity: Observe the color and the intensity of the oil in the solvent under both UV and natural lights. The cut color observed under UV light could be called a cut color fluorescence (example: bright blue white cut fluorescence).
6.3.2 Sample Examination Procedure for Hydrocarbon Shows
2016年11月11日 · The mud sample is poured into a shallow dish and placed under UV light to observe the signs of fluorescence in the mud or droplets of immiscible oil popping to the surface. If nothing is seen, water is added to the mud and the mixture is stirred.
Oilfield Geology and Fluorescence - NIGHTSEA
Fluorescence plays an important role in oilfield geology, the analysis of the cuttings coming out of a well as it is being drilled. Read how NIGHTSEA can help.
Hydrocarbon shows - Order of written description: - 1Library
The most reliable test for hydrocarbons is the “cut fluorescence” or “wet cut” test. In this test, the effect of the reagent on the sample is observed under ultraviolet light, along with a sample of the pure solvent as control. The sample should be thoroughly dried before applying the reagent.
Fluorescence and Cut - Mainlogging
fluorescence and cut Using a standard fluoroscope, our main objective is to find any and all oil shows and provide clear distinction on the mud log. Here are some good examples of what we see:
Mudlogging: drill cuttings analysis - AAPG Wiki
2022年1月24日 · Cuttings from wells with oil-based muds are usually more representative of the formation than cuttings from water-based mud because the oil emulsion prevents sloughing and dispersion of clays and shales. However, these samples cannot be …
Lithology Section - DG
Activate the Show check box if fluorescence is visible. Select options from the picklists and enter data in the Level, Cut and Percentage to describe the natural fluorescence of the sample. Cut is the leaching of hydrocarbons from a core or cuttings sample. Chlorothene is often used as …
Oil show detection and analysis - Drilling Operations - Rig Worker
2012年8月2日 · By placing cuttings under an ultra violet light in a UV light box, oil shows can be seen between fluorescence caused by external sources such as pipe dope and that caused by hydrocarbons from downhole. From the appearance and colour of the fluorescence, an estimate of the grade of oil present can be made.
FLUORESCENCE - Texas A&M University
Strong light yellow fluorescence of the sediment and a white-blue fluorescence of the fluid ("cut fluorescence") may indicate the presence of liquid hydrocarbons (Shipboard Scientific Party, 1995).