Laserfiche WebLink
Table of Contents <br />Page <br />Section 1.0 Introduction ......................................................... ......................................... l <br />Section 2.0 Survey Procedure ................................................ ......................................... 2 <br />Section 3.0 Data Analysis ...................................................... .........................................3 <br />3.1 Preparation of Seismic Data Files for Analysis ............ ......................................... 3 <br />3.1.1 Measuring the Source Time .................................... ......................................... 3 <br />3.1.2 Defining Velocity Model ........................................ ......................................... 4 <br />3.2 Data Processing ............................................................. .........................................4 <br />Section 4.0 Data Interpretation .............................................. ......................................... 4 <br />Section 5.0 Conclusions ......................................................... .........................................4 <br />Appendix A. Seismic Velocity Tomographic Images ........... .........................................6 <br />Appendix B. Technical Specifications for Hydrophones ...... ......................................... 7 <br />Appendix C. NSA Record Triggering Device ....................... ......................................... 8 <br />Appendix D. Assessing Actual Source Time (Time Break) .. ...............................•••••"'• <br />10 <br />Appendix E. Outline for Recommended Full-Scale Monitoring System ..................... <br />Figures <br />Al. Geological profile and steel pipes in We1128-21 at the survey site. <br />A2. Temperature plot in production pipe of Well 28-21. <br />A3. First configuration of hydrophones and seismic sources. <br />A4. Second configuration of hydrophones and seismic sources. <br />A5. Third configuration of hydrophones and seismic sources. <br />A6. Time-versus-distance plots for two typical seismic waves. <br />A7. Typical record of seismic waves generated by firing a shot 2,160 feet below the <br />surface. <br />A8. Cross-section through the well alignment and contour anomalies showing location <br />and extent of detected caverns associated with solution mining and some anomalies <br />above the mining zone. <br />A9. Contour anomalies showing location and average extent of detected caverns <br />associated with solution mining, and some anomalies above the mining zone. <br />C1. Block schematic of NSA nonintrusive, intrinsically safe triggering device. <br />D 1. Impulse generated by actual blase -break time. <br />D2 Waves traveling along steel pipe from a hammer strike on surface to hydrophones at <br />depths between 1, 537 and 1,717 feet. <br />