RAPID FORMATION OF SAND BODY AT SHOREWARD EDGE OF OFFSHORE DREDGING HOLE AND RESULTING LARGE CHANGE IN SAND SPIT

2003 ◽  
Author(s):  
Takaaki Uda ◽  
Satoquo Seino ◽  
Masumi Serizawa ◽  
Toshiro San-Nami ◽  
Kou Furuike
Keyword(s):  
Large Change ◽  
Sand Body ◽  
Sand Spit ◽  
Rapid Formation

scholarly journals Discussion on Fine Characterization Technology of Single Sand Body in Fluvial Reservoir

2021 ◽  
Vol 329 ◽  
pp. 01030
Author(s):  
Mei Xu
Keyword(s):  
Physical Properties ◽  
Large Change ◽  
Scale Production ◽  
Well Production ◽  
Fluvial Reservoir ◽  
Sand Body ◽  
Single Well ◽  
Plane Distribution ◽  
Permeable Sand ◽  
Layer Development

Fuyu oil layer of an oilfield is an ultra-low permeability oil layer. The remarkable characteristics of this oil layer are poor physical properties, low single well production, 2-4 layers of sand body longitudinally, large change frequency of plane upper layer and continuous characteristics. In order to realize effective oil layer development and ensure effective reservoir utilization. According to the poor physical properties of this oilfield, this paper analyzes the microscopic and macroscopic responsiveness of the reservoir, ensures effective permeability and thickness of permeable sand body, quantificationally depicts the plane distribution of permeable sand body, and effectively determines the distribution range of the reservoir according to the description of single sand body, thus providing a good technical means for subsequent scale production.

INFLUENCE OF DEVELOPMENTAL CONDITION OF SAND SPIT ON INTRUSION CHARACTERISTICS OF WAVES INTO AN ESTUARY

2019 ◽  
Vol 75 (2) ◽  
pp. I_253-I_258
Author(s):  
Yuki KAJIKAWA ◽  
Natsumi WADA ◽  
Masamitsu KUROIWA ◽  
Takashi KATAYAMA
Keyword(s):  
Sand Spit ◽  
Developmental Condition

DEVELOPMENT OF SAND-BODY RESERVOIRS IN FAULT-BOUNDED LAKE BASINS: PLEISTOCENE-HOLOCENE POYANG LAKE, EASTERN CHINA

2017 ◽  
Author(s):  
Chenlin Hu ◽  
◽  
Yuanfu Zhang ◽  
Yuanfu Zhang ◽  
Yuanfu Zhang ◽  
...  
Keyword(s):  
Poyang Lake ◽  
Eastern China ◽  
Sand Body ◽  
Lake Basins

scholarly journals Ripple Formation during Oblique Angle Etching

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 272
Author(s):  
Mehmet F. Cansizoglu ◽  
Mesut Yurukcu ◽  
Tansel Karabacak
Keyword(s):  
Plasma Etching ◽  
Incidence Angle ◽  
Incident Beam ◽  
Root Mean Square Roughness ◽  
Sticking Coefficient ◽  
Oblique Angle ◽  
Nano Fabrication ◽  
Ripple Formation ◽  
Rapid Formation ◽  
Roughness Analysis

Chemical removal of materials from the surface is a fundamental step in micro- and nano-fabrication processes. In conventional plasma etching, etchant molecules are non-directional and perform a uniform etching over the surface. However, using a highly directional obliquely incident beam of etching agent, it can be possible to engineer surfaces in the micro- or nano- scales. Surfaces can be patterned with periodic morphologies like ripples and mounds by controlling parameters including the incidence angle with the surface and sticking coefficient of etching particles. In this study, the dynamic evolution of a rippled morphology has been investigated during oblique angle etching (OAE) using Monte Carlo simulations. Fourier space and roughness analysis were performed on the resulting simulated surfaces. The ripple formation was observed to originate from re-emission and shadowing effects during OAE. Our results show that the ripple wavelength and root-mean-square roughness evolved at a more stable rate with accompanying quasi-periodic ripple formation at higher etching angles (θ > 60°) and at sticking coefficient values (Sc) 0.5 ≤ Sc ≤ 1. On the other hand, smaller etching angle (θ < 60°) and lower sticking coefficient values lead to a rapid formation of wider and deeper ripples. This result of this study can be helpful to develop new surface patterning techniques by etching.

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