A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including...

The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made...

drilled section of a borehole. Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support...

Borehole Mining (BHM) is a remote operated method of extraction (mining) of mineral resources through boreholes based on in-situ conversion of ores into...

in Triton. Triton workers excavated a 235 feet (72 m) shaft, known as Borehole 10-X and supported by a steel caisson to bedrock, in 1971. According to...

The Askam Borehole is a borehole that is located in Luzerne County, Pennsylvania, in the United States. It is situated in the watershed of Nanticoke Creek...

also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may...

Deep borehole disposal (DBD) is the concept of disposing high-level radioactive waste from nuclear reactors in extremely deep boreholes instead of in more...

The Ludham Borehole was a geological research borehole drilled in 1959 near Ludham, Norfolk, UK. A continuous core sample of late Pliocene and early Pleistocene...

(commonly referred to as MD, or just the depth) is the length of the drilled borehole. In conventional vertical wells, this coincides with the true vertical...