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Hole opener

Loch, n. hole, opening cavity eye pore prison, -blende, /. perforated screen or diaphragm. -eisen, n. puncher, pimch. locben, v.t. perforate, punch, pierce, locherig, a. full of holes, perforated, porous. Locherstelle,/. open place, gap, hole. Loch-frass, m. pitting (as of metals), -karte,/. punch (ed) card, -kultur,/. (Bact.) stab culture. -scheibe, /. perforated disk, apertured disk. [Pg.280]

The pressure drop remains essentially constant as long as the liquid flow on tray remains steady during the period point A to point B on the diagram (the open balance point) [201]. At point B all valves are completely open off their seats, but are on the verge of closing and may be oscillating from open to closed. At point B the vapor velocity through the holes, opened balance point is ... [Pg.208]

Vpt, B = vapor velocity through holes, open balance point, ft/sec... [Pg.208]

Downhole drilling tools are the components of the lower part of a drill string used in normal drilling operations such as the drill bits, drill collars, stabilizers, shock absorbers, hole openers, underreamers, drilling jars as well as a variety of drill stem subs. [Pg.812]

Hole opening is considered as opening or enlarging the hole from the surface (or casing shoe) downward using a tool with cutter arms at a fixed diameter. [Pg.820]

Open hole. Open hole completion is typically used in competent formations such as limestone, dolomite, and consolidated sandstone that will stand unsupported in a borehole. [Pg.789]

Not all scientific statements are testable hypotheses, laws or theories. For example, scientific paradigms, by one definition (Masterman, 1970 Horgan, 1996), are organizing principles which encompass much of the work of ordinary science, in the language of Thomas Kuhn (1970) but are not necessarily testable. Ordinary science is not the source of revolutionary science (except, possibly when it breaks down) and is not hypothesis driven so much as driven by the requirement to fill in the holes opened in a field by the scientific paradigm. [Pg.92]

Ajima K, Maigne A, Yudasaka M, Iijima S (2006) Optimum hole-opening condition for cisplatin incorporation in single-wall carbon nanohoms and its release. Journal of Physical Chemistry B 110 19097-19099. [Pg.257]

The results of the hole-opening measurements are presented in the series of oscilloscope traces shown in Figure 16. Traces 16a and b are the results obtained on a sample fabricated with polystyrene of molecular weight 4 K. From trace a it can be seen that under the action of the 8 nsec dye laser pulse, the holes or pits develop fully in —30 nsec. Furthermore, from the measurements taken at 100 nsec/div (b), it can be seen that the pit, once fully developed, maintains its dimensions. Similar conclusions can be drawn from oscilloscope traces c, d and e which show measurements taken on samples... [Pg.452]

Where conditions are such that it is impractical to measure static pressure at the wall, a combined pitot-static tube may be used. This is actually two tubes, one inside the other. The outer tube is plugged off at the end facing the flowing fluid, but small holes are drilled through it to receive the fluid pressure. These holes open into the annular space between the tubes. The static pressure is measured through two or more of these holes, and it is assumed that the flow follows along the outside of the tube in such a way that the true static pressure is obtained. [Pg.428]

For our system we chose the simplest approach — a fast sample conduit with quick quench into an evacuated sample container. For temperature measurements we used a similar probe outfitted with platinum/6% rhodium-platinum/30% rhodium thermocouple. For pressure measurements the same general type probe mentioned was employed but without extracting samples. This probe had one hole opening perpendicular to the longitudinal axis of the probe such that when inserted into the reactor it could be rotated 360°. In this manner the pressures were read from a precision pressure gauge with the opening facing 0°, 90°, 180°, and 270° relative to the direction of flow in the reactor. [Pg.284]

FIGURE 1.8.2 Schematic diagram pertaining to the free expansion of a gas. The gas is initially confined in compartment A of the system and is allowed to expand into compartment B through a hole opened in the diaphragm separating the two regions. [Pg.60]

Figure 46 The field dependencies of the hole (open circles) and electron (solid circles) mobilities of Alq. Figure 46 The field dependencies of the hole (open circles) and electron (solid circles) mobilities of Alq.
When you heat a crystalline solid the kinetic energy and hence the amplitude of the oscillations of the molecules increases. The material expands. As it does so the attractive force between the molecules decreases (see Chapter 8, page 208). At the melting temperature this force of attraction is not enough to keep the molecules in place and the material melts. Now the motion becomes a complex coupling of vibrational oscillations and translational movement, as holes" open up as a result of random displacements of neighbors. Clearly, there has to be enough empty space" in the material as a whole for this to occur. [Pg.319]

For a centered hole opening. Figure 10.37 presents this correlation for (1) 6BD and (2) HE-3 impellers. [Pg.312]

The effect of a draft tube on backmixing, for a center hole opening, is correlated in dimensionless form by... [Pg.312]

Figure 10.37. Backmixing correlation for center hole opening with zero forward flow. Figure 10.37. Backmixing correlation for center hole opening with zero forward flow.
Figure 10.40. Correlation for the effect of forward flow on backmixing for center hole opening. Figure 10.40. Correlation for the effect of forward flow on backmixing for center hole opening.
Blocked Hole Opened Hole - Fixed VilRR Ring... [Pg.85]

Are grout holes or pipes located in accordance with plans Are adequate devices being used to keep holes open ... [Pg.465]

Compressed air may be used to keep hole open as casing partially withdrawn... [Pg.532]

In addition to the stirred cell, other laboratory reactors commonly used include rotating drum contactor, wetted wall column, wetted sphere column, laminar jet, and stirred contactor. These equipments are shown schematically in Figures 11.14b-f. AU have several common features, the principal one being a weU defined gas-liquid interfacial area and the ability to vary the area per unit reactor volume a). In the stirred cell, it is achieved by varying the liquid height. As an alternative way, a solid circular baffle is placed at the gas-liquid interface. Holes are drilled on the baffle plate so that the hole opening area becomes the interfacial area. For varying a, baffle plates are made with different free (hole) areas. [Pg.796]

Slot sizes of the screens are chosen to maximize well yield so that reliable water samples and water-level drawdown data can be collected during specific-capacity and other field tests. To accomplish this, sieve analyses can be performed on split-spoon samples from the interval to be monitored. A grain-size distribution curve can be field plotted and analyzed to establish the screen slot size and the size of the gravel pack. For wells installed in competent bedrock, it may be wisest not to install a screen but to leave the hole open for maximum yield. In these cases, a surface casing is installed to prevent the collapse of the unconsolidated sediments and possible downward migration of contaminants. [Pg.165]


See other pages where Hole opener is mentioned: [Pg.45]    [Pg.47]    [Pg.333]    [Pg.904]    [Pg.819]    [Pg.450]    [Pg.452]    [Pg.453]    [Pg.87]    [Pg.28]    [Pg.59]    [Pg.76]    [Pg.151]    [Pg.47]    [Pg.140]    [Pg.59]    [Pg.76]    [Pg.197]    [Pg.33]    [Pg.548]    [Pg.52]    [Pg.647]    [Pg.85]    [Pg.346]    [Pg.492]   
See also in sourсe #XX -- [ Pg.45 ]




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