Browsing by Author "Kitajima, Hiroko"
Now showing items 1-20 of 21
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Gallegos, Dana Lu (2019-01-15)Earthquakes and tsunami events pose significant threats to human life and property. Accordingly, the scientific community is developing an understanding of what controls fault strength and failure mechanics in order to ...
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Kaneshima, Takuma (2019-06-10)Shale swelling causes 90% of wellbore instabilities and oil-base muds (OBM) have been the best choice for many years. However, the stringent environmental concern have resulted in a keen interest in the development of ...
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Dholi, Mohit (2020-03-12)Formation sand production has been a recurring problem for the oil and gas industry since the advent of the hydrocarbon exploration and extraction. The effects of sand production are adverse in nature and are two folds; ...
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He, Zhenhua (2018-11-27)The activation of natural fractures and associated microseismicity generation and radiation during hydraulic fracturing treatments are dynamic processes. However, most of the current hydraulic fracturing models are based ...
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Jiao, Leiyin (2019-11-15)Dynamic ruptures of the 2016 Meinong earthquake and potential ground motion induced by earthquake scenarios on the geometrically complex Chinshan-Shanqiao faults in Taiwan have been modeled. Realistic 3D velocity structures ...
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Tran, Tan Nhat (2018-07-17)The present experiment attempts to study the behavior of proppant mixed with fibers in slickwater fracturing using a large-scale flow equipment. Previous experiments have shown that, at small scale, PGA fibers in slickwater ...
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Allen, Alexi Kristina (2020-04-21)Subduction zones are known to produce large, damaging earthquakes, but they can also experience slow-slip events which cannot be felt by humans. Understanding the mechanisms which influence this variation in slip rate will ...
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Ruplinger, Casey E (2023-01-10)Pore fluid pressure in the geological formation at depth varies spatially and temporarily. An increase in pore fluid pressure at depth leads to a reduction in effective normal stress, and thus affects the rock strength and ...
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Kitajima, Hiroko (2012-02-14)Frictional measurements were made on natural fault gouge at seismic slip rates using a high-speed rotary-shear apparatus to study effects of slip velocity, acceleration, displacement, normal stress, and water content. ...
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Kuo, Szu-Ting (2022-06-03)Subduction plate boundary faults are responsible for devastating earthquakes and tsunami. Over the past several decades, multiple offshore scientific drilling projects have advanced our understanding of fault and rock ...
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Meng, Qingjun (2022-10-24)The first goal of this dissertation is to investigate physical conditions and factors that control the two major types of slip phenomena, tsunami earthquakes and slow slip event (SSEs), along shallow subduction zones. The ...
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Barbery, Monica Rae (2022-05-18)Flash heating can result in dramatic reductions in the frictional strength of rock sliding surfaces as velocities approach seismic rates. Models for flash-weakening show good overall agreement with the total magnitude of ...
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Liu, Yongzan (2021-07-14)Low-Frequency Distributed Acoustic Sensing (LF-DAS) is a promising fracture diagnostic technique for detecting fracture hits and characterizing fracture geometry. However, measured signals exhibiting various characteristics ...
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Reid, Teresa (2023-04-13)Low-frequency distributed acoustic sensing (LF-DAS) can be used as a monitoring tool for hydraulic fracture propagation using measured values of strain. To understand subsurface conditions with shear and normal stresses, ...
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Nebel, Patrick Robert (2020-04-16)The threat from earthquakes and tsunamis on human life is immense. To conduct threat assessment and mitigate damage, the scientific community strives to generate physics-based models that accurately portray natural fault ...
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Xu, Guangjian (2019-08-07)Mechanical stratigraphy strongly impacts the growth of hydraulic fractures in shale reservoirs. Without a complete understanding of the properties of the target and surrounding intervals, it is hard to predict the bulk ...
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Lim, Un Young (2019-05-15)Amplitude Variation with Offset (AVO) inversion is an effective method to estimate elastic parameters of target subsurface layers. However, most conventional AVO inversions are based on linear approximations of Zoeppritz ...
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Chen, Xi (2021-07-13)A numerical model is developed for predicting perforation cavity evolution during the early stage of sand production. The objective of this thesis is to propose a new sand-rate-prediction model based on coupling fluid and ...
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Araki, Naoto (2018-06-25)The study investigates perforation interaction in order to find the optimum perforation design which yields the highest productivity while maintaining mechanical stability. The study is composed of i) evaluation of flow ...
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Morte, Matthew Kyle (2020-01-02)The potential of microwave technology in the context of enhanced oil recovery is a concept whose technical feasibility has been expounded by numerous pilot tests. However, poor penetration depth and limited understanding ...