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Single-well

In recent years a new approach to contracting has evolved and Is gaining rapid acceptance In the United Kingdom Continental Shelf (UKCS). The concept has become known as partnering and can be seen as a progression of the incentive contract. Whilst the previously described contractual arrangements are restricted to a single well project... [Pg.62]

If one or more clusters of single wells are required then an Underwater Manifold System can be deployed and used as a subsea focal point to connect each well. The subsea trees sit on the seabed around the main manifold (compared to the template). [Pg.270]

Onshore processing facilities, and modules brought onshore, have to be cleaned of all hazardous compounds and scrapped. Cellars of single wells, drilling pads, access roads and buildings will have to be removed. If reservoir compaction affects the surface area above the abandoned field future land use may be prevented, in particular in coastal or low land environments. [Pg.371]

The vertical component of flow can be determined if a well is screened at two different elevations as shown in Figure 1. Frequently, nested wells are used instead of a single well and multiple screenings to determine the vertical component of flow (2). Nested wells must be situated close enough to one another so horizontal gradients do not become a factor. [Pg.403]

There are actually four turning points in each well. It does not matter from which one we start, because the straight-line segments between the turning points are incorporated into that part of g(E) which is responsible for the single well quantization. [Pg.73]

It is apparent (Fig. 1.21) that at potentials removed from the equilibrium potential see equation 1.30) the rate of charge transfer of (a) silver cations from the metal to the solution (anodic reaction), (b) silver aquo cations from the solution to the metal (cathodic reaction) and (c) electrons through the metallic circuit from anode to cathode, are equal, so that any one may be used to evaluate the rates of the others. The rate is most conveniently determined from the rate of transfer of electrons in the metallic circuit (the current 1) by means of an ammeter, and if / is maintained constant it can eilso be used to eveduate the extent. A more precise method of determining the quantity of charge transferred is the coulometer, in which the extent of a single well-defined reaction is determined accurately, e.g. by the quantity of metal electrodeposited, by the volume of gas evolved, etc. The reaction Ag (aq.) -t- e = Ag is utilised in the silver coulometer, and provides one of the most accurate methods of determining the extent of charge transfer. [Pg.80]

Recognizing that the information transmission is often both nonuniform (since the left and right fronts do not always propagate outward from the perturbation with a single well-defined velocity), and dependent on choice of initial states, one can instead define maximal and minimal average propagation speeds, and A " " ... [Pg.207]

Stirred tanks are modeled assuming that both phases are well mixed. Tray columns are usually modeled as well mixed on each tray so that the overall column is modeled as a series of two-phase, stirred tanks. (Distillation trays with tray efficiencies greater than 100% have some progressive flow within a tray.) When reaction is confined to a single, well-mixed phase, the flow regime for the other phase makes little difference but when the reacting phase approximates piston flow, the flow regime in the other phase must be considered. The important cases are where both phases approximate piston flow, either countercurrent or cocurrent. [Pg.401]

In most cases, the observables measured in the study of a chemical reaction are interpreted under the following (often valid) assumptions (1) each product channel observed corresponds to one path on the PES, (2) reactions follow the minimum energy path (MEP) to each product channel, and (3) the reactive flux passes over a single, well-defined transition state. In all of the reactions discussed in this chapter, at least one, and sometimes all of these assumptions, are invalid. [Pg.215]

The well-resolved C=0 li peak in the fenchone XPS provides an excellent opportunity to examine PECO from a single, well-characterized initial orbital. As has been previously mentioned, it might be thought that such a localized, spherically symmetric initial orbital would not be sensitive to the molecular enantiomer s handedness, but as can be seen in Fig. 15 (a) the dichroism in the electron yield recorded at the magic angle is sufficiently large to be easily visible by eye as a difference in the intensity of the Icp and rep spectra. [Pg.310]

The very methods, ranging from a single well treatment to fieldwide treatments, can be subsumed as MEOR techniques. The injection of microbes into the formation is a common practice in all of these techniques. This should stimulate the in situ microflora, resulting in the production of certain compounds that increase the oil recovery of exhausted reservoirs. The following basic effects can be achieved by microbes [1780] ... [Pg.217]

In some cases, where the wall of the reactor has an appreciable thermal capacity, the dynamics of the wall can be of importance (Luyben, 1973). The simplest approach is to assume the whole wall material has a uniform temperature and therefore can be treated as a single lumped parameter system or, in effect, as a single, well-stirred tank. [Pg.139]

Gas-liquid contacting systems can be modelled in a manner similar to liquid-liquid contactors. There are however some modelling features which are peculiar to gas-liquid systems. The single well-mixed contacting stage is shown in Fig 3.56. [Pg.198]

A recirculation system extracts contaminated groundwater from the site, adds to or amends the extracted water ex situ, and reinjects the activated water to the subsurface, generally upgradient of the contaminated zone. As an alternative, extraction and injection are performed at different elevations in a single well, creating vertical circulation. A groundwater recirculation configuration may be used to provide containment of a plume or to allow the addition of amendments in a more controlled environment. [Pg.1016]

Semibatch operations usually employ a single well-stirred tank. In such cases it is possible to make the usual assumption that the composition... [Pg.300]

Oligomerizations and polymerizations in which many radical additions to a limited range of alkenes (or other acceptors) take place will not be discussed in this book, although they are typical domino reactions. However, they usually do not lead to single well-defined products. [Pg.220]

The next debate in the literature was whether these molecules have C2v or Cs symmetry. The nuclear motion of a C2v symmetric structure would be described by a single-well potential (see Figure 10). The alternative is a rapid interconversion of two valence tautomers, each of Cs symmetry. This would occur via the C2v structure as transition state (see Figure 11). In this case the motion of the central sulfur would be described by a double-well potential, and dioxathiapentalene and trithiapentalene would be misnomers for (3//-l,2-oxathiol-3-ylidene)acetaldehyde 180 and (3/7-1,2-dithiol-3-ylidene)thioacetaldehyde 181. One advantage of C2v symmetry is aromatic stabilization from the 1071 electrons <2001CRV1247>. The alternative Cs symmetry has the advantage of avoiding a hypervalent sulfur. [Pg.516]


See other pages where Single-well is mentioned: [Pg.265]    [Pg.352]    [Pg.1202]    [Pg.450]    [Pg.64]    [Pg.274]    [Pg.180]    [Pg.173]    [Pg.187]    [Pg.6]    [Pg.127]    [Pg.121]    [Pg.112]    [Pg.90]    [Pg.911]    [Pg.256]    [Pg.4]    [Pg.206]    [Pg.212]    [Pg.111]    [Pg.207]    [Pg.168]    [Pg.1]    [Pg.401]    [Pg.257]    [Pg.20]    [Pg.793]    [Pg.326]    [Pg.15]    [Pg.16]    [Pg.1012]    [Pg.104]    [Pg.258]   
See also in sourсe #XX -- [ Pg.17 ]




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