Laserfiche WebLink
Table of Contents <br />Paee <br />Section 1.0 Introduction .................................................................................................. l <br />Section 2.0 Survey Procedure .........................................................................................2 <br />Section 3.0 Data Analysis ...............................................................................................3 <br />3.1 Prepazation 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 />Secfion 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) ...........................................9 <br />Appendix E. Outline for Recommended Full-Scale Monitoring System .....................10 <br />Figures <br />Al. Geological profile and steel pipes in Well 28-21 at the survey site. <br />A2. Temperature plot in production pipe of We1128-21. <br />A3. First configuration ofhydrophones 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 />Cl. 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 betwccn 1, 537 and 1,717 feet. <br />