Engineering 2012 2017 wednesday PRACTICE QUESTIONS 1) Define \"geothermometer\"
ID: 121598 • Letter: E
Question
Engineering 2012 2017 wednesday PRACTICE QUESTIONS 1) Define "geothermometer" 2) a) What is the principle to use chemical geothermometers? b) What is the main assumption for usage of geothermometers? 3) Cooling of water during ascent from the geothermal reservoir to surface can occur in two ways: a) b) 4) What are the forms of silica (SiO2) encountered in geothermal d) 5) T= 1309 / (5. 19-log C)-273.15 a) what is T and C in this formula? b) Where do we use this formula? 6) Silica geothermometrs are effected by several factors which are a) c) 7) What are the solubility behavior of quartz and amorphous silica 8) How does the steam separation affect the temperature of the geothermal reservoir estimated by geothermometers? (Please consider the formula given in question (5). 9) How does the silica precipitation affect the temperature of the geothermal reservoir estimated by geothermometers? (Please consider the formula given in question (5). 10) What are the characteristics of geothermal "temperature gradient wells"? 11) What are the characteristics of "reinjection wells" 12) What are the characteristics of trace tests" 13) Why do we use reinjection wells/tests? 14) Define "EGS" and write its characteristics. 15) Cooling of water, scaling and rapid clogging. These three terms remind you. 16) Why do we reinject water into the geothermal fields? 17) Based on Kaya et al. (201), how do you classify the geothermal fields? Please show me their classification? 18) Based on Kaya et al. (2011), which geothermal systems produce the most energy in MWe? 19) According to Kaya et al. (2011) which geothermal system receives the most reinjected water? 20) What are purposes of using tracer tests? 21) Why do we use "fluorescein" as tracer test material?Explanation / Answer
1. It is an assemblage of minerals , which gives temprature of the minerals while they were crystallizing, it is studied from the texture of the minerals present.
2 a. The major principle is that , the system should be temprature dependent with solid and liquid phase which are in equlibrium at the depth and during its ascent.
b.Assmptions:
3. By exchange with the surface where it travels and contact with the cooler atmosphere
4. Stalagtite, stalagmite, silicious mud, amorphus silica, crystaline quartz
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