Search results
Results from the WOW.Com Content Network
Borehole drilling has a long history. Han dynasty China (202 BC – 220 AD) used deep borehole drilling for mining and other projects. Chinese borehole sites could reach as deep as 600 m (2,000 ft). [1]
In 2023, China embarked on a 10,000-metre (33,000 ft; 6.2 mi) super-deep borehole in the Tarim Basin in the Xinjiang region for scientific, oil and gas exploration. [24] [25] [26] In March 2024, drilling of the borehole, which is known as Shendi Take 1, reached a depth of 10,000 metres. [27]
The British sinologist and historian Michael Loewe states that borehole sites could reach as deep as 600 metres (2,000 ft). [3] K.S. Tom describes the drilling process: "The Chinese method of deep drilling was accomplished by a team of men jumping on and off a beam to impact the drilling bit while the boring tool was rotated by buffalo and oxen."
According to the VDI Standard 3210, deep hole drilling processes are manufacturing processes for the machining of bore holes with diameters between D = 0.2...2000 mm and whose drilling depth is usually greater than three times the diameter. [1]
The study of Massachusetts Institute of Technology "The Future of Geothermal Energy – Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century" (2006) points out the essential importance of developing an economical deep geothermal boring technology. With old boring technologies, bore price rises exponentially with ...
In the oil industry measured depth (commonly referred to as MD, or just the depth) is the length of the drilled borehole. [1] In conventional vertical wells, this coincides with the true vertical depth , but in directional or horizontal wells, especially those using extended reach drilling , the two can deviate greatly.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
This oval shape can cause a 2-arm caliper log to overestimate the size of the borehole, if its arms get stuck in the long-axis. In most cases, the borehole's circumference will not be a perfect circle and therefore a caliper tool with several arms is required to obtain a true understanding of the size and shape of the borehole.