Browsing ERL Industry Consortia Technical Reports by Author "Chen, Tianrun"

Now showing items 1-7 of 7

    • Asymmetric source acoustic LWD for the improved formation shear velocity estimation 

      Chen, Tianrun; Wang, Bing; Zhu, Zhenya; Toksoz, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
      Most acoustic logging while drilling (LWD) tools generate a single pure borehole mode (e.g., dipole or quadrupole) to estimate the formation shear velocity. We propose an approach where multipole modes are generated ...

    • Asymmetric source acoustic LWD for the improved formation shear velocity estimation 

      Chen, Tianrun; Wang, Bing; Zhu, Zhenya; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
      Most acoustic LWD tools generate a single pure borehole mode (e.g., dipole or quadrupole) to estimate the formation shear velocity. We propose an approach where many borehole modes are generated and all the modes are ...

    • Modeling of acoustic wave scattering from a two-dimensional fracture 

      Chen, Tianrun; Fehler, Michael; Brown, Stephen; Zhang, Yang; Fang, Xinding; e.a. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
      In this paper, we model the acoustic scattering from a two dimensional fracture that is simulated by two different physical models. We calculate the scattering from the fractures with different properties based on these ...

    • A robust method for fracture orientation and density detection from seismic scattered energy 

      Fang, Xinding; Fehler, Michael; Zhu, Zhenya; Chen, Tianrun; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
      The measurements of fracture parameters, such as fracture orientation, fracture density and fracture compliance, in a reservoir is very important for field development and exploration. Traditional seismic methods for ...

    • Sensitivity analysis of fracture scattering 

      Fang, Xinding; Fehler, Michael; Chen, Tianrun; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
      The understanding of seismic scattering of a finite fracture is very important in reservoir fracture characterizations, but the analytical solution of this problem is not available. Thus, in this paper, we present an ...

    • SH Wave Scattering from Fractures using Boundary Element Method with Linear Slip Boundary Condition 

      Chen, Tianrun; Fehler, Michael; Fang, Xinding; Shang, Xuefeng; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
      A boundary element method (BEM) combined with a linear slip boundary condition is proposed to calculate SH wave scattering from fractures. The linear slip boundary condition was proposed by Schoenberg (1980) to model elastic ...

    • Simulating Shear Wave Propagation in Two-Dimensional Fractured Heterogeneous Media by Coupling Boundary Element and Finite Difference Methods 

      Chen, Tianrun; Li, Junlun; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
      A hybrid method to model the shear wave (SH) scattering from 2D fractures embedded in a heterogeneous medium is developed by coupling Boundary Element Method (BEM) and Finite Different Method (FDM) in the frequency domain. ...