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University of Houston

1. Yu, Boyuan 1985-. Study of Time Domain Logging Tools Using Finte Difference Time Domain Method.

Degree: PhD, Electrical Engineering, 2013, University of Houston

In the well logging industry, before designing any kind of logging tools, the tool response needs to be simulated and analyzed in different circumstances. Those kinds of logging tools can be generally categorized into two main genres: frequency domain tools and time domain tools. This dissertation presents a numerical way to simulate the time domain tool response. The 3-D finite difference time method is employed in this dissertation. In this dissertation I used 3D FDTD method to simulate the logging tools response in complicated logging circumstance to see how the response will appear with different formation. A few examples were included in this dissertation and shown very decent results. As it is known that the frequency is set relatively low so the tool can detect further when dealing with well logging problems. In order to improve the efficiency of the entire simulation process, two main techniques are introduced in this dissertation: perfectly matched layer boundary conditions and artificially high dielectric constant. With those techniques combined together, the specific tool (Look-Ahead time do main logging tool) response is studied such as the distance to bed boundary response, sea-bed logging tool response, and reservoir effect. With those cases study in detail, the response patterns are investigated while the formation parameters are varied. One thing that needs to be pointed out is that the source excited in all the examples through this dissertation is a Differential Gaussian wave with different maximum operating frequency chosen based on different needs and different examples. Advisors/Committee Members: Liu, Richard C. (advisor), Vipulanandan, Cumaraswamy (committee member), Wilton, Donald R. (committee member), Charlson, Earl J. (committee member), Malki, Heidar A. (committee member).

Subjects/Keywords: Well logs; Finite-difference time-domain; Look ahead tool; Reservoir effect; Sea bed logging; Bed boundary detection; Electrical engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Yu, B. 1. (2013). Study of Time Domain Logging Tools Using Finte Difference Time Domain Method. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1008

Chicago Manual of Style (16th Edition):

Yu, Boyuan 1985-. “Study of Time Domain Logging Tools Using Finte Difference Time Domain Method.” 2013. Doctoral Dissertation, University of Houston. Accessed November 26, 2020. http://hdl.handle.net/10657/1008.

MLA Handbook (7th Edition):

Yu, Boyuan 1985-. “Study of Time Domain Logging Tools Using Finte Difference Time Domain Method.” 2013. Web. 26 Nov 2020.

Vancouver:

Yu B1. Study of Time Domain Logging Tools Using Finte Difference Time Domain Method. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2020 Nov 26]. Available from: http://hdl.handle.net/10657/1008.

Council of Science Editors:

Yu B1. Study of Time Domain Logging Tools Using Finte Difference Time Domain Method. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/1008

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