Petroleum Exploration
The role of exploration is to provide the information required to exploit the best opportunities presented in the choice of areas, and to manage research operations on the acquired blocks.…
Drilling fluid
In geotechnical engineering, drilling fluid, also called drilling mud, is used to aid the drilling of boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for…
DrillingTechnologies
Oil well drilling is a complex operation and the drilling industry engages the services of personnel and a complicated array of machinery and materials to drill an oil/gas well to…
Resistivity logging
Resistivity logs are electrical well logs that record the resistivity of a formation. Resistivity is usually recorded in ohm meters (Ωm) and is displayed on track 4 of a well…
Acoustic logging
Petroleum applications of acoustic-wave-propagation theory and physics include both: · Surface-geophysical methods · Borehole-geophysical methods Acoustic logging is a subset of borehole-geophysical acoustic techniques. Historically, the primary and the most routine uses…
Neutron porosity logs
The neutron-porosity log first appeared in 1940. It consisted of an isotopic source, most often plutonium-beryllium, and a single detector. Many variations were produced exploiting both thermal and epithermal neutrons.…
Density Logging
The measurement of formation density is an essential component in accurate reservoir evaluation, helping the petrophysicist to determine the porosity of the rock and to estimate total reserves. Porosity represents the…
Openhole caliper logs
Openhole caliper logs provide data used in completion planning. Openhole calipers can be used with different types of logging tools and it is important to understand how the logging tool…
Gamma ray logs
The radioactivity of rocks has been used for many years to help derive lithologies. Natural occurring radioactive materials (NORM) include the elements uranium, thorium, potassium, radium, and radon, along with…
Spontaneous potential logging
Spontaneous potential log, commonly called the self potential log or SP log, is a passive measurement taken by oil industry well loggers to characterise rock formation properties. The log works by measuring small electric potentials (measured in…
