Determination of Infill Drilling Time Window Based on Depletion-Induced Stress Evolution of Shale Reservoirs with Complex Natural Fractures

2020 ◽  
Author(s):  
Yanli Pei ◽  
Wei Yu ◽  
Kamy Sepehrnoori
Keyword(s):  
Time Window ◽  
Stress Evolution ◽  
Natural Fractures ◽  
Induced Stress ◽  
Infill Drilling ◽  
Shale Reservoirs ◽  
Drilling Time

FLUVIAL RESERVOIR ARCHITECTURE INTERPRETATION BELOW THE SEISMIC RESOLUTION IN AN OFFSHORE OILFIELD

2021 ◽  
pp. 1-49
Author(s):  
Dong Zhang ◽  
Xuri Huang ◽  
Ting’en Fan ◽  
Haifeng Wang ◽  
Feng Ding ◽  
...  
Keyword(s):  
Time Window ◽  
Seismic Attributes ◽  
Gradient Algorithm ◽  
Bohai Bay ◽  
Reservoir Heterogeneity ◽  
Reservoir Architecture ◽  
Fluvial Reservoir ◽  
Seismic Resolution ◽  
Infill Drilling ◽  
Bounding Surfaces

Reservoir discontinuity is a practical representation of reservoir heterogeneity, which leads to the non-uniformed flow of hydrocarbons during production and to the increase in the difficulties of producing the remaining oil in clastic reservoirs. A feasible solution is to detect the internal bounding surfaces of the reservoir based on infill drilling data. However, for offshore oilfields, reservoir discontinuity analysis will have to rely on seismic data due to their sparse well spacings. Moreover, from the interpretation of a fluvial reservoir system in Chinaapos;s Bohai Bay, it turns out that the thickness of the sandstone is usually smaller than the seismic tuning thickness. In order to interpret a fluvial reservoir architecture which is below the seismic resolution, we elaborated a hierarchy of the fluvial reservoir architectures and classified the compound sandstones as different architectural elements according to their sedimentary periods. Forward models were designed to analyze the seismic responses of the architectures. The results demonstrate that amplitude-related seismic attributes could be sensitive to different reservoir architectures below the seismic resolution. The amplitude-related seismic attributes can be extracted through a time window guided by the horizons. The horizon-based attributes can be treated as digital images which may contain the information of compound sandstones with hidden discontinuity boundaries. We propose a direction-adaptive mathematical morphology gradient algorithm that can detect the boundaries of reservoir architectures in different directions on horizon-based seismic attributes. The application to field data demonstrates that the boundaries detected by the proposed algorithm have a good consistency with well logs. This method could enhance our capability to visualize and understand the complexity of reservoir heterogeneity.

Determination of Effective Response Time Window to Visual Object in Object-oriented Task of Birds

2021 ◽  
Author(s):  
Xiaoke Niu ◽  
Shangfei Yang ◽  
Zhenyang Jiang ◽  
Yanyan Peng ◽  
Hong Yang
Keyword(s):  
Response Time ◽  
Time Window ◽  
Object Oriented ◽  
Visual Object ◽  
Effective Response

The Effects of the Mechanical Properties of the Confinement Material on Electromigration in Metallic Interconnects

2000 ◽  
Vol 612 ◽  
Author(s):  
Stefan P. Hau-Riege ◽  
Carl V. Thompson
Keyword(s):  
Mechanical Properties ◽  
Integrated Circuits ◽  
Effective Elastic Modulus ◽  
Low Dielectric Constant ◽  
Stress Evolution ◽  
Liner Material ◽  
Low Dielectric ◽  
Aspect Ratios ◽  
Induced Stress ◽  
The Standard Model

AbstractNew low-dielectric-constant inter-level dielectrics are being investigated as alternatives to SiO2 for future integrated circuits. In general, these materials have very different mechanical properties from SiO2. In the standard model, electromigration-induced stress evolution caused by changes in the number of available lattice sites in interconnects is described by an effective elastic modulus, B. Finite element calculations have been carried out to obtain B as a function of differences in the modulus, E, of interlevel dielectrics, for several stress-free homogeneous dilational strain configurations, for several line aspect ratios, and for different metallization schemes. In contradiction to earlier models, we find that for Cu-based metallization schemes with liners, a decrease in E by nearly two orders of magnitude has a relatively small effect on B, changing it by less than a factor of 2. However, B, and therefore the reliability of Cu interconnects can be strongly dependent on the modulus and thickness of the liner material.

Determination of optimal time window for cortical mapping in awake craniotomy: assessment of intraoperative reaction speed

2019 ◽  
Vol 43 (2) ◽  
pp. 633-642
Author(s):  
Dziugas Meskelevicius ◽  
Artur Schäfer ◽  
Jasmin Katharina Weber ◽  
Lisa Hegmann ◽  
Lisa Haddad ◽  
...  
Keyword(s):  
Time Window ◽  
Awake Craniotomy ◽  
Cortical Mapping ◽  
Optimal Time ◽  
Reaction Speed

Determination of Longwall Mining-Induced Stress Using the Strain Energy Method

2015 ◽  
Vol 48 (6) ◽  
pp. 2421-2433 ◽  
Author(s):  
Mohammad Rezaei ◽  
Mohammad Farouq Hossaini ◽  
Abbas Majdi
Keyword(s):  
Energy Method ◽  
Strain Energy ◽  
Longwall Mining ◽  
Induced Stress ◽  
Strain Energy Method

scholarly journals Case study on the mining‐induced stress evolution of an extra‐thick coal seam under hard roof conditions

2020 ◽  
Vol 8 (9) ◽  
pp. 3174-3185 ◽  
Author(s):  
Cong Li ◽  
Heping Xie ◽  
Mingzhong Gao ◽  
Jing Xie ◽  
Guangdi Deng ◽  
...  
Keyword(s):  
Coal Seam ◽  
Stress Evolution ◽  
Thick Coal Seam ◽  
Hard Roof ◽  
Induced Stress
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