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i 6 i <br />TABLE 2 -TRAVEL TIMES AND AMPLITUDES FOR FREE PIPE <br />(3 FT RECEIVER) <br />CASING CASING TRAVEL TIM£ (µs) AMPLITUDE <br />SIZE <br />(in) WEIGHT <br />(lb/ft) 1-11 16" TOOL <br />/ 3-5/8" TOOL (mV) <br /> 9.5 252 233 81 <br />4-1/2 11.6 250 232 81 <br /> 13.5 249 230 81 <br /> 15.0 257 238 76 <br />5 18.0 255 236 76 <br /> 20.3 253 235 76 <br /> 15.5 266 248 72 <br />5-1/2 17.0 265 247 72 <br /> 20.0 264 245 72 <br /> 23.0 262 243 72 <br /> 23.0 291 271 62 <br /> 26.0 289 270 62 <br /> 29.0 288 268 62 <br />7 <br />32.0 <br />286 <br />267 <br />62 <br /> 35.0 284 265 62 <br /> 38.0 283 264 62 <br /> 26.4 301 '281 59 ' <br />•~7-5/8 29.7 299 - 280 " ' 59 <br /> 33.7 -~ 297 278 ' S9 ' <br /> 39:'0 295 276 59 <br /> 40.0 333 313 51 <br />9_5/8 43.5 332 311 51 <br /> 47.0 330 310 51 <br /> 53.5 328 309 51 <br /> 40.5 354 333 48 <br />10-3/4 45.5 352 332 48 <br /> 51.0 350 330 48 <br /> 55.5 349 328 48 <br />