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8.0 TEMPERATURE LOG AND INTECTION TEST <br /> 8.1 Pre-Injection Rmperature Log <br /> On June 8, 1993, prior to starting the injection test, a shut-in temperature log was run <br /> from 50 ft to the bottom of the screen liner at 4,567 ft. The log was run 48 hours after <br /> completion of gravel packing. It indicated the standing water level to be 51 ft below ground <br /> level, and the temperature on bottom was 123.7°F. A copy of the log is included in <br /> Appendix A, and a compressed plot of the temperature profile is shown in Figure 8.1. The <br /> temperature profile is normal except for a distinct residual cooling anomaly below 4,234 ft <br /> caused by fluid loss to the formation. The log shows clearly that the water lost during <br /> circulation and gravel packing was confined vertically to the perforated interval. There is no <br /> indication of interzonal flow. <br /> 8.2 Lection Test and Logging Operations <br /> Following the temperature log, a step-rate injection test was done in conjunction with <br /> cased-hole logging to quantify injectivity, determine the formation transmissivity, define the <br /> injection profile and verify that there is no movement of injected water upward past the <br /> confining layer. As described in Section 4.0, water from the cleanout and production operation <br /> had been filtered and stored in three 500-barrel tanks on location. For the injection test, water <br /> was drawn from the three tanks, refiltered through five-micron cartridge filters and injected in <br /> the well using a Halliburton pump truck. The injection flow rate at each step was set and <br /> maintained by the Halliburton pump rpm. The rates and cumulative injection volumes were <br /> verified by periodic gaugings of the tanks. <br /> Mesquite Group, Inc. -18 <br />