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Formation drilling
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
Boreholes drilled primarily to determine the structural, petrologic, and geologic characteristics of the overburden and rock strata penetrated. also called formation testing.
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Drill, английский
- (crop science) a farm implement for planting seeds which forms a small furrow, deposits the seed in dribbles, covers the seed, and packs soil over it. it can also deposit fertilizer, lime, or other amendments into the soil, alone or with the seed.
- A designed shot or routine used for practice
- Тренировка; упражнение; освоение
- A tool which rotates very rapidly to make a hole, especially a surgical instrument used in dentistry to remove caries verb to make a hole with a drill a small hole is drilled in the skull. the dentist drilled one of her molars.
- Systematized instruction in the practice of all military exercises.
- Systemized instruction in naval or military exercises and movements.
- Any cutting tool or form of apparatus using energy in any one of several forms to produce a circular hole in rock, metal, wood, or other material. see calyx drill, churn drill, core drill, diamond drill, rock drill, rotary drill, shot drill.
- To make a circular hole with a drill or cutting tool.
- A strong denim-like material with a diagonal 2 x 1 weave running toward the left selvage. drill is often called khaki when it is dyed that color.
- Any technique based on repetition or cueing.
- To bore a hole in the earth, usually to find and remove subsurface formation fluids such as oil and gas.
Drill, английский
Taillant
Drill, английский
Drill, английский
Drill, немецкий
Sammelbegriff für alle schwergewebe in köper- und besonders in fischgratbindung aus leinen, halbleinen oder baumwolle, vorzugsweise für berufskleidung und matratzenbezüge
Drill (dentistry), английский
Drill adapter, английский
Адаптер
Drill ahead, английский
- Drilling ahead. 1. to sink a borehole into solid or unconsolidated rock material, such as overburden or glacial till, to a considerable depth below the bottom of the casing or drivepipe. 2. to restart or resume drilling operation. 3. to drill boreholes in advance of mine workings to explore for or locate old mine workings or a water bearing formation.
- Продолжать ^бурение
Drill and blast, английский
Construction method in which pilot holes are drilled for explosive charges. the resulting debris is carried out and the process is repeated.
Drill and blast raise driving, английский
Drill at assembly with, английский
Drill axis, английский
Drill bar, английский
A drill column that is set horizontally instead of vertically in an underground workplace.
Drill base, английский
Metal or wood framework on which a drilling machine is mounted.
Drill bit, английский
- One of a number of different types of detachable cutting tools used to cut circular holes in rock, wood, metal, etc. also called drill crown in africa and england.
- The cutting tool at the bottom of the drill pipe which bores into the formation. there are many different types and styles of cutting faces and materials used for drill bits, and these are tailored for specific types of rock, or formations. drill bits range in size from 3-3/4” (95.25 mm) to 36” (914.4 mm), and drill bit sizes are limited by the kind of casing pipe used to keep the well from collapsing. roller cone-type and pdc (polycrystalline diamond compact)-type bits are most commonly used.
- The cutting or boring element used to access oil or gas in the drilling process. not only are most bits roller-cone bits, but the drill bit also typically includes both the cutting element and the circulating element.
Drill bits, английский
Tools that excavate soil or rock and faciliate steering at the face of the bore. common types of drill bits used in hdd include slant-face bits, slanted-face rock bits, rotary rock bits, and percussive bits.
Drill boart, английский
Drilling boart. = drill diamonds, q.v.
Drill bolt screening head, английский
Drill boom, английский
Drill boom angle sensor, английский
Drill bort, английский
Drilling bort. =drlll diamonds, q.v.
Structural, английский
- Структурный; конструктивный
- Said of a load-bearing member, element, etc., of a building.
- A структурный analysis, class, description, linguistics, metaphor, order, phonologist, phonology, series, signal, system
Characteristics, английский
- The distinguishing qualities of a navigation aid or buoy, including shape and color, whether fixed or flashing, and flashing sequence.
- A high-performance fiber with high chemical resistance that does not burn in air. it has no melting point and does not drip when exposed to flame. the fiber and fabrics from pbi retain their flexibility, dimensional stability, and significant strength without embrittlement even when exposed to flame or extreme heat. the fiber emits little smoke in extreme conditions. it processes well on conventional textile equipment, having processing characteristics similar to polyester. it can be used in 100% form or blended with other fibers. it has a high moisture regain and low modulus with comfort properties similar to cotton. the natural color of pbi is a gold-khaki shade, but it can be dyed to almost any medium to dark shade with conventional basic dyes.
- Acetate fabrics are in appearance fast-drying, wrinkle and shrinkage resistant, crisp or soft in hand depending upon the end use.
- Although modacrylics are similar to acrylics in properties and application, certain important differences exist. modacrylics have superior resistance to chemicals and combustion, but they are more heat sensitive (lower safe ironing temperature) and have a higher specific gravity (less cover).
- Although the properties of the nylons described above vary in some respects, they all exhibit excellent strength, flexibility, toughness, elasticity, abrasion resistance, washability, ease of drying, and resistance to attack by insects and microorganisms.
- Because acrylic fibers are thermoplastic, fabrics may be heat-set for wrinkle resistance and to provide permanency to pleats. acrylic fabrics have low moisture absorbency and dry relatively quickly. in general, acrylic fibers are resistant to the degrading effects of ultraviolet rays in sunlight and to a wide range of chemicals and fumes. they provide warmth in fabrics that are lightweight, soft, and resilient. acrylic fibers have relatively poor flame resistance compared with other fibers. some acrylic fabrics, particularly knit types, approximate the hand of fine wool. because of the composition and cross section of the fiber, fabrics made therefrom have a high bulk to weight ratio. this is further enhanced with the so-called “high bulk” spun yarns.
- Glass fiber is incombustible and will tolerate heat up to 1000°f without material damage. potential strength is not realized in woven fabrics or even in yarns, because the fiber is brittle and fracture points may develop, but nevertheless, very high tensile strength is obtained in woven fabrics, and is retained at elevated temperatures. the fiber originally was difficult to color but methods have been developed to accomplish this. moisture absorption is low. electrical and insulation resistance is high.
- Polychlal fibers have a soft, lamb’s wool-like hand and moderate moisture regain. the fibers are also characterized by high flame resistance and high abrasion resistance.
- Polyester fibers have high strength and are resistant to shrinking and stretching. fabrics are quick drying and tend to have wrinkle resistance and crease retention, wet and dry. polyester is used alone and in blends. it has been one of the first fibers to be developed in fabrics with durable-press features.
- Polyethylene fibers have a low specific gravity, extremely low moisture regain, the same tensile strength wet and dry, and are resistant to attack by mildew and insects. these qualities have made polyethylene fiber suitable for industrial applications, geotextiles, outdoor furniture, and similar applications. polyethylene fiber does not dye, and in most cases, it is colored by the addition of pigments and dyes to the material prior to spinning. it has a low melting point, a property that has restricted its use in apparel.
- Polypropylene fibers have a number of advantages over polyethylene fibers in the field of textile applications. the degree of crystallinity, 72 to 75%, results in a fiber that is strong and resilient, and does not fibrillate like high-density polyethylene. polypropylene has a high work of rupture, which indicates a tough fiber, and may be made with tenacities as high as 8.0 to 8.5 grams per denier. the melting point of polypropylene is 165°c, which is low by comparison with nylon or polyester, but is high enough to make it suitable for most textile applications. so light that it actually floats, polypropylene fiber provides greater coverage per pound than any other fiber. it is highly resistant to mechanical abuse and chemical attack.
- Rayon yarns are made in a wide range of types in regard to size, physical characteristics, strength, elongation, luster, handle, suppleness, etc. they may be white or solution dyed. strength is regulated by the process itself and the structure of the yarn. (also see polynosic fiber.) luster is reduced by including delustering materials, such as titanium dioxide pigments, in the fiber when it is extruded. the suppleness of the yarn is controlled by the number of filaments in the yarn, the denier or gauge of the individual filaments or fibers, and the fiber cross-section.
- Spandex is lighter in weight, more durable, and more supple than conventional elastic threads and has between two and three times their restraining power. spandex is extruded in a multiplicity of fine filaments which immediately form a monofilament. it can be repeatedly stretched over 500% without breaking and still recover instantly to its original length. it does not suffer deterioration from oxidation as is the case with fine sizes of rubber thread, and it is not damaged by body oils, perspiration, lotions, or detergents.
Overburden, английский
- Вскрышной слой (поверхностный слой грунта, удаляемый перед открытой добычей угля)
- Перегружать
- Clay, sand, boulder clay, and other un-consolidated materials overlying bedrock. also called burden, cover, drift, mantle, surface.
- The worthless material covering a body of useful mineral.
- Вскрышной слой грунта; вскрышная порода; перегрузка, чрезмерная нагрузка
- (a) the upper part of a sedimentary deposit, compressing and consolidating the materials below. (b) the loose soil or other unconsolidated material overlying bedrock, either transported or formed in place (synonym for regolith). gg
- Overlying rock, or soil.
- The soil and rock supported by the roof of a tunnel.
- Вскрыша
Characteristic, английский
- Property that helps to distinguish between items of a given population (3)
- A quality which allows something to be recognised as different cancer destroys the cell’s characteristics. adjective being a typical or distinguishing quality symptoms characteristic of anaemia the inflammation is characteristic of shingles.
- N характеристика (см. тж. portrayal) articulatory ~ артикуляторная характеристика perceptual ~ перцептивная характеристика, характеристика восприятия
- Характерная особенность, признак; характеристика, особенность ~s of the loading особенности [параметры] нагружение (конструкции)
- The characteristic dimension dc
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Damsite testing, английский
Boreholes drilled to determine petro-logical and structural features of the rock or overburden materials at or near the area on which, the foundations of a dam will rest.
Permafrost drilling, английский
Boreholes drilled in subsoil and rocks in which the contained water is permanently frozen.
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