Quite simply because you have to drill deep enough to get to the substance you require be it water, oil or gas.
Not 100% sure on the question whether it means surveying an existing borehole or assessing the viability of drilling a new one. If it's surveying an existing borehole for problems etc that is usually done via CCTV where a camera is lowered into the well. If it's assessing the viability of drilling a new borehole then that's called borehole prognosis and that is carried by a hydrogeologist who geology, hydrogeology, water quality, potential yield and borehole depth requirements.
borehole in Tagalog: pagbutas
The Kola Superdeep Borehole is a man-made hole drilled into the Earth's crust, reaching a depth of about 7.5 miles. The Mariana Trench is a natural trench in the ocean floor, known as the deepest point on Earth, reaching a depth of about 36,000 feet. The main difference is that the Kola Superdeep Borehole is on land and drilled by humans, while the Mariana Trench is underwater and formed by natural geological processes.
As a noun, 'borehole' doesn't have an antonym.
The deepest borehole ever drilled by humans is the Kola Superdeep Borehole in Russia, reaching a depth of approximately 7.5 miles (12 kilometers). This project was started as a scientific endeavor to better understand the Earth's crust and mantle.
There's a beetle in this borehole.
The Kola Superdeep Borehole diagram shows the layers of the Earth's crust that were drilled through during the project. It includes the crust, mantle, and transition zone. The borehole reached a depth of over 12 kilometers, making it the deepest hole ever drilled. The diagram also shows the various rock formations encountered at different depths.
The location of the deepest hole on Earth is the Kola Superdeep Borehole in Russia, which reaches a depth of about 7.5 miles (12 kilometers).
The Kola Superdeep Borehole in the former USSR reached a depth of 12262 meters (40230 feet) in 1989, at which point drilling had to be abandoned because of the extremely high temperatures.
The Kola Superdeep Borehole was begun in 1970 and finished in 1992. It reached 12,262 meters deep. Work ceased due to the difficulties of drilling in extreme temperatures (~300 degrees Celsius) and lack of funding.
A borehole geophysical log is the science of recording and analysing measurements of physical properties made in wells or test holes. Borehole Geophysical logs provide a borehole record of the lithology, fractures, permeability, porosity and water quality.
The cost of a soil boring test with a report can vary depending on the location, depth of the borehole, and specific requirements of the project. On average, the cost can range from $500 to $3000 per borehole. It is best to contact local geotechnical engineering firms for accurate pricing based on your project's needs.