Russian Xinglong down-the-hole drilling rig

Drilling at Kola SG-3 began on 24 May 1970 using the -4E, a serial drilling rig used for drilling . The rig was slightly modified to be able to reach a 7,000-metre (23,000 ft) depth. In 1974, the new purpos. . The stated areas of study of the Kola Superdeep Borehole were the deep structure of the , discontinuities and the thermal regime in the Earth's crust, the physical and chemical compositio. . The drilling ended in 1995 due to a lack of funding. The scientific team was transferred to the federal state unitary subsidiary enterprise "Kola Superdeep," downsized, and given the new task of thoroughly studying th. . • The United States had embarked on a similar project in 1957, dubbed , which was intended to penetrate the shallow crust under the Pacific Ocean off Mexico. After initial drilling, the project was aband. [pdf]

Russian underground mining down-the-hole drill rig

The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. It is the result of a scientific drilling effort to penetrate as deeply as possible into the Earth's crust. DrillingDrilling at Kola SG-3 began on 24 May 1970 using the -4E, a serial drilling rig used for drilling . The rig was slightly modified to be able to reach a 7,000-metre (23,000 ft) depth. In 1974, the new purpos. . The stated areas of study of the Kola Superdeep Borehole were the deep structure of the , discontinuities and the thermal regime in the Earth's crust, the physical and chemical compositio. . The drilling ended in 1995 due to a lack of funding. The scientific team was transferred to the federal state unitary subsidiary enterprise "Kola Superdeep," downsized, and given the new task of thoroughly studying th. [pdf]

What are the 90-hole submersible drilling rigs

Underground coring drill rig for easy tailoring and upgrading and capable of drilling holes at all angles from vertically up to vertically down.. Underground coring drill rig for easy tailoring and upgrading and capable of drilling holes at all angles from vertically up to vertically down.. Detailed specifications for AKITA Drilling Rig 90, including drawworks, power, substructure, mast, top drive, mud pumps, and other equipment.. The rig is modular in design with a number of options which make it easier to tailor to specific needs and to upgrade when requirements change. With the assistance of a positioner and a turntable the drill is capable of drilling holes in all angles from vertically up to vertically down. The drill uses an electric motor to power the hydraulics on the machine. The drill can be paired with an . . Material contained in the AKITA Drilling Ltd. web site is for information purposes only and is not intended to constitute an offering of securities in any jurisdiction. Information disclosed under the corporate and securities laws of Canadian jurisdictions applicable to AKITA Drilling Ltd. is not intended to be in any way qualified, amended, modified or supplemented by the information . . The LM™90 is the largest Boart Longyear underground diamond coring rig and is suited for drilling deep holes. Equipped with a 29,000-lb feed frame, this drill provides high pullback force as well as a relatively quick rod-handling rate. [pdf]