Drilling Rig

(redirected from Drilling tower)
Also found in: Dictionary, Thesaurus.
Related to Drilling tower: rotary drilling
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Drilling Rig


an equipment complex for drilling wells. Drilling rigs are classified as rotary (most widely used), percussion, vibration, flame-jet, and so on according to the method of drilling. A drilling rig includes a drill, derrick (mast), actuator, and mechanized hoisting equipment. Rotary drilling rigs are equipped with pumps and equipment for the preparation, cleansing, and regeneration of drilling fluids (see Figure 1).

Various types of drilling rigs are distinguished, including stationary rigs, for drilling oil, gas, and geological test wells; mobile rigs, which are used mainly in geological prospecting, drilling of artesian wells, and construction work; self-propelled rigs, with the equipment mounted on caterpillar treads or wheels or on a truck, tractor, boat, and so on, which are mainly used for the drilling of blast holes; and portable rigs, for exploratory drilling in hard-to-reach regions.

Drilling rigs used in the mining industry are called boring machines; they differ according to their type of drive (electric, diesel, or hydraulic) and their capacity (light, medium, and heavy-duty). These drilling rigs are differentiated by the depth and diameter of the holes to be drilled, load capacity, engine power, and other factors. The drilling rigs are equipped with control and measurement equipment that provides continuous monitoring of the drilling operation (the axial load on and the frequency of rotation of the rock-crushing tool, the drilling rate, and amount and pressure of the flushing agent supplied to the hole). Automatic control systems have been developed for drilling-rig operations.

Heavy-duty drilling rigs capable of sinking holes down to depths of 8 km are manufactured in the USSR. New rigs are being designed for superdeep drilling (10-15 km).


Kulichikhin, N. I., and B. I. Vozdvizhenskii. Razvedochnoe burenie. Moscow, 1966.
Vadetskii, Iu. V. Burenie neftianykh i gazovykh skvazhin, 2nd ed. Moscow, 1967.
Danielian, A. A. Osnovnye napravleniia proektirovaniia oborudovaniia dlia bureniia glubokikh skvazhin. Moscow, 1967.
Khanmurzin, N. I. Burenie na verkhniuiu mantiiu. Moscow, 1967.


Figure 1. Cutaway view of a drilling rig

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The first two drilling towers in accordance with this design were a real step change and were installed in 2009 and 2010 onboard the Noble/Shell Bully I and the Noble/Shell Bully II drillships.
HUISMAN, the Dutch specialist in heavy lifting, pipelay and drilling equipment, has designed and manufactured the drilling tower and related pipe, riser and blowout preventer (BOP) handling equipment for the first Shell/Frontier Bully drill ship which was recently shipped from the Huisman quay in Schiedam to the Keppel Shipyard in Singapore.
| (With photos) KUWAIT, July 19 (KUNA) -- Deputy Premier and Acting Oil Minister Mustafa Al-Shimali visited Friday Kuwait Oil Company's (KOC) operation zone in northern Kuwait on Friday and got acquainted with the operations being done, as well as visiting a drilling tower in Al-Rawdhatain.
In a press conference after the signing of the deal, an American multinational corporation, KOC's CEO Emad Al-Sultan said that the contract involves offshore operations to install drilling towers and services connected with oil wells' drilling, logistics, and transport.
five drilling towers and has invited foreign companies to bid.