File Name: introduction to drilling and drilling equipment .zip
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Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool , often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips swarf from the hole as it is drilled. In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements.
Drilling for oil and gas is a complex process. The videos below provide basic knowledge of the drilling process. Before drilling, the site must be carefully chosen. Then the land is prepared and access roads should also be built. A reserve pit must also be dug on the ground for the disposing of mud and rock.
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The circulation system on the rig is the system that allows for circulation of the Drilling Fluid or Mud down through the hollow drill string and up through the annular space between the drill string and wellbore. It is a continuous system of pumps, distribution lines, storage tanks, storage pits, and cleansing units that allows the drilling fluid to fulfill its primary objectives these will be discussed later in this lesson. The mud pumps of the circulation system and the drawworks of the hoisting systems are the two largest draws on the power from the power system. In the detailed rig schematic Figure 9. Drilling fluid is mixed in the mud pits and pumped by the mud pumps through the swivel, through the blow out preventer not part of the circulation system down the hollow drill pipe, through holes Jet Nozzles in the bit, up the annular space between drill pipe and wellbore where it lifts the rock cuttings , to the surface, through the Solids Control Equipment Shale Shaker , Desander , and Desilter , and back to the mud pits. A schematic of the circulation system is shown in Figure 9. In this figure, fresh water-based drilling fluid mud is mixed with water from the Water Tank not shown in Figure 9.
Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool , often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips swarf from the hole as it is drilled. In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside the hole top-hammer drill or within the hole down-the-hole drill , DTH.
National Oilwell Varco “NOV” overview. ▫ History of oil drilling. ▫ How is drilling planned? ▫ Drilling Rig- Main components. ▫ Well Types. ▫ Well Profiles and.
A drilling rig is an integrated system that drills wells , such as oil or water wells, in the earth's subsurface. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells, or they can be small enough to be moved manually by one person and such are called augers. Drilling rigs can sample subsurface mineral deposits, test rock, soil and groundwater physical properties, and also can be used to install sub-surface fabrications, such as underground utilities, instrumentation, tunnels or wells. Drilling rigs can be mobile equipment mounted on trucks, tracks or trailers, or more permanent land or marine-based structures such as oil platforms , commonly called 'offshore oil rigs' even if they don't contain a drilling rig. The term "rig" therefore generally refers to the complex equipment that is used to penetrate the surface of the Earth's crust.
Working Guide to Drilling Equipment and Operations offers a practical guide to drilling technologies and procedures. The book begins by introducing basic concepts such as the functions of drilling muds; types of drilling fluids; testing of drilling systems; and completion and workover fluids. This is followed by discussions of the composition of the drill string; air and gas drilling operations; and directional drilling.
Немедленно. Соши побежала к своему терминалу. Джабба нередко прибегал к ВР, что в компьютерных кругах означало виртуальная реальность, но в АНБ это сокращение имело несколько иной смысл - визуальная репрезентация. В мире технических служащих и политиков, имеющих чрезвычайно разные уровни понимания, визуальная репрезентация нередко была единственным способом что-либо доказать: взмывающая вверх кривая производит куда более сильное впечатление, чем целые тома рассуждений. Джабба понимал, что ВР текущего кризиса со всей наглядностью объяснит то, что он хотел сказать. - ВР! - крикнула Соши, усаживаясь за компьютер в задней части комнаты.
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