OIL AND GAS EXPLORATION TECHNIQUES
Oil and gas exploration, or generally called as hydrocarbon explorations is the expression used by geologists to search for petroleum and gas. The exploration enables oil and mining companies to harvest natural gas and hydrocarbons from different areas of the planet. Drilling is expensive and therefore hydrocarbon explorations are performed to determine potential areas which contain these deposits while restricting price and reducing its impact on the environment.
Before a drill location is recognized, geologists must assess the region and ensure that five factors exist - source rock, reservoir, migration, trap and seal or cap rock. As explorations are costly and expensive, these factors should be present before any drilling is finished. Once the factors are believed, geologists employ several methods to guarantee the success of the drilling. The first methodology involves geophysical survey or seismic survey.
Seismic survey is among the popular methods that geologists use in ascertaining if hydrocarbons exist especially in warm water surveillance. tucumann makes use of sound to find out the degree of the stone formations in the heavy water. Many companies take advantage of vibrator trucks or even small explosive charges on land and record the noise by means of a geophone.
Besides seismic surveys, geologists may also make use of offshore surveys which involves the use of compressed air to create massive bubbles that burst upon reaching the surface region. The sound waves from the burst will then travel below and reach the rocks in which the vibrations are subsequently recorded by hydrophones. As each stone produces different sound waves, geologists will also be able to spot the rock type that exists in the deep.
Some explorations may also use magnetometers and gravimeters to measure the planet’s gravity pull at the surface whereas geochemical prospecting involves the measuring of natural gases using high-tech instruments.
Remote Sensing is also among the techniques that geologists utilized to ascertain the structure of the exploration website.
In certain cases where data is restricted, some gas and oil firms also execute a wildcat well particularly in regions which are not explored before. The wells provide mining companies advice on the website and whether petroleum or natural gas are all available.