China offers a diverse range of water well drilling rigs, each designed to meet specific drilling requirements and environmental conditions. The most common types include rotary drilling rigs, percussion drilling rigs, and down-the-hole (DTH) drilling rigs.
[pdf] From 1983 to 1993, the rig was operated by in . She was mothballed in 1993, and in 2005 she was acquired by and underwent intensive refurbishment. In January. .
Kulluk was strengthened against ice with 3 in (76 mm) thick, reinforced steel, and a funnel-shaped with flared sides enabling her to operate in Arctic waters as moving ice was deflected downwards and was broke. .
• on the CIMSS Satellite Blog• McKenzie Funk, , New York Times Magazine, December 30, 2014.
[pdf] Drilling in the peaked during the 1970s and 1980s, led by such companies as in the Sverdrup Basin of the Arctic Islands, and by and in the Beaufort Sea-Mackenzie Delta Basin. Drilling continued at declining rates until the early 2000s. In all, some 300,000 km of seismic and 1500 wells were drilled across this vast area. Approximately 1.9 billion barrels (300×10 m ) of oil and 32.4 trillion cubic feet (9.2×10 m ) .
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