A CASE STUDY USING TWO-DIMENSIONAL AND THREE-DIMENSIONAL SEISMIC DATA IN THE HIGH ISLAND AREA, OFFSHORE TEXAS.

Author(s):  
Gary L. Snyder
2015 ◽  
Vol 772 ◽  
pp. 183-187
Author(s):  
Xiao Ye Yu ◽  
Alex To ◽  
Goman Ho

This paper simulated the non-linear sloshing effects under typical dynamic actions. The sloshing simulation is realized with the Arbitrary Lagrangian Euleria (ALE) formulation plus bi-phase hydrodynamic biomaterial liquid gas materials. The study first investigated two dimensional (2D) sloshing problems under harmonic excitations. Through calibration studies in standard rectangular tanks, the case study demonstrated reasonable agreement with numerical results published by other researchers. The study was then extended to more complicated three dimensional (3D) sloshing problems, with the fluid-structure interaction (FSI) considered. The simulation well reflected the sloshing behaviours in a steel tank subject to given seismic excitations and provided available prediction for structural performance. The obtained results show that the used method is helpful for seismic design of liquid tanks.


1978 ◽  
Vol 18 (1) ◽  
pp. 116
Author(s):  
E. G. Selby

There are many limitations in the ultimate accuracy of a conventional two dimensional seismic survey. One of the most important of these is that, in general, a prospect is not a two dimensional model but a three dimensional one. For a complete interpretation of a prospect area the final result should be a migrated time or depth map. With limited sampling (a seismic grid typically consists of loops with dimensions at least 1 km by 1 km) it is necessary to interpolate grid points to allow map migration and this method has inherent inaccuracies.The three dimensional seismic exploration technique is designed to provide a sufficiently close sampled grid of seismic traces, typically with a line and depth point spacing as close as 50-100 m, to allow the seismic data itself to be migrated three dimensionally. This allows the interpreter to work with migrated seismic sections and to contour directly the migrated map.Several techniques exist to allow practical and economic collection of seismic data to provide this close sampling. These techniques can be adapted to various terrain and cultural conditions.The main advantages of three dimensional data collection are correct imaging of the seismic information giving true vertical reflection time sections and improved signal-to-noise ratio due to the increased fold inherent in the three dimensional migration process. The additional advantage to the interpreter is that the data has a sampling which gives a line intersection at each depth point in the prospect.


2021 ◽  
Vol 40 (5) ◽  
pp. 383-384
Author(s):  
Mohammed Badri ◽  
Ali Yousif ◽  
Maged Mabrook

Geoscientists and reservoir engineers are challenged to integrate data of different scales to better understand fluid movement in oil reservoirs. Different technologies are capable of imaging fluid movement in the reservoir at different scales. Two-dimensional fluid imaging has been achieved recently through crosswell and surface-to-borehole electromagnetic (EM) measurements. Three-dimensional fluid movement imaging has shown potential by using surface seismic data volumes. The Multiscale Reservoir Surveillance and Monitoring Workshop, held virtually 7–9 December 2020, attempted to address the challenge of how to integrate these measurements obtained at different scales into a workflow to improve the understanding of fluid flow, which is critical for sweep efficiency and recovery.


Author(s):  
Apple Xu Yaping

This paper analyzes the early film writing of Georg Lukács, particularly ‘Thoughts Towards an Aesthetic of the Cinema’ (‘Gedanken zu einer Ästhetic des Kino’, 1913), from the perspective of the oral mode of communication and expression, or, orality. It considers that the essence of the orality lies with the embodied engagement of human beings, basing on Walter J. Ong’s ideas of the orality-literacy hypothesis. With such understanding, it argues that the moving image can be the technological redemption of the orality, and suggests that the visual revival of the orality depends on but beyond the optical perception, necessarily involving the spectatorial embodiment. Lukács’s understandings towards the primitive moving-images imply that the revived orality in the visual can reside in two aspects: the mimetic representation of the moving image, and the intersubjective engagement between the two-dimensional screen world and the three-dimensional real world in the cinema experience. Additionally, this paper elucidates such hypothesis of the moving-image redemption of orality with a case study on a digital documentary Life in a Day (dir. Kevin Macdonald, 2011, 95 min.), for the purpose of suggesting the relevance of Lukács’s early thoughts to the recent digital culture and scholarly-discussions on the cinematic ‘affect’.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shota Ono

AbstractSome of the three-dimensional (3D) crystal structures are constructed by stacking two-dimensional (2D) layers. To study whether this geometric concept, i.e., using 2D layers as building blocks for 3D structures, can be applied to computational materials design, we theoretically investigate the dynamical stability of copper-based compounds CuX (a metallic element X) in the B$$_h$$ h and L1$$_1$$ 1 structures constructed from the buckled honeycomb (BHC) structure and in the B2 and L1$$_0$$ 0 structures constructed from the buckled square (BSQ) structure. We demonstrate that (i) if CuX in the BHC structure is dynamically stable, those in the B$$_h$$ h and L1$$_1$$ 1 structures are also stable. Using molecular dynamics simulations, we particularly show that CuAu in the B$$_h$$ h and L1$$_1$$ 1 structures withstand temperatures as high as 1000 K. Although the interrelationship of the metastability between the BSQ and the 3D structures (B2 and L1$$_0$$ 0 ) is not clear, we find that (ii) if CuX in the B2 (L1$$_0$$ 0 ) structure is dynamically stable, that in the L1$$_0$$ 0 (B2) is unstable. This is rationalized by the tetragonal Bain path calculations.


Author(s):  
Daniel W. Carroll ◽  
Spencer P. Magleby ◽  
Larry L. Howell ◽  
Robert H. Todd ◽  
Craig P. Lusk

Most simplified manufacturing processes generally result in two-dimensional features. However, most products are three-dimensional. Devices that could be manufactured through simplified manufacturing processes, but function in a three-dimensional space, would be highly desirable — especially if they require little assembly. Compliant ortho-planar metamorphic mechanisms (COPMMS) can be fabricated through simplified manufacturing processes, and then metamorphically transformed into a new configuration where they are no longer bound by the limitations of ortho-planar behavior. The main contributions of this paper are the suggestion of COPMM definitions, an investigation into the morphing process, and the description of a COPMM design process. This work also contributes a case study in designing COPMMs to meet particular design objectives.


1999 ◽  
Vol 54 (1) ◽  
pp. 103-108 ◽  
Author(s):  
Stephanie Janeda ◽  
Dietrich Mootz

The crystal structures of five low-melting hydrates of n-alkane-α,ω-diamines, H2N(CH2)nNH2 · x H2O, for short Cn · x W, have been determined. As a common feature, the water molecules are mutually linked by hydrogen bonds O-H· · ·O to form low-dimensional polymers. These are a meandering chain in C2 · 2 W (space group I 2/a, Z = 4 formula units per unit cell), a zig zag chain in C6 · 2 W (P 21/c, Z = 2), a ribbon of consecutively condensed five-membered rings in C3 · 3 W (P 21/c, Z = 4) and a layer of condensed and spiro-linked rings of varying size each in C7 · 3 W (P 1̄, Z = 4) and C4 · 5 W (C 2/c, Z = 4). Further hydrogen bonding, between the water polymers and the bifunctional amine molecules, leads to overall connectivities which are three-dimensional in each structure.


2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Ulisses Dardon ◽  
Viviane Vieira ◽  
Stella Barbara Serodio Prestes ◽  
Thaís De Castro Cunha Parméra ◽  
Leonardo Cotts ◽  
...  

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