# intoduction to earth sciences homework help

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• Q1: 4. A carbonate rock layer was logged and found to have a porosity of 18%. The water resistivity is estimated to be 0.2 ohms-meters, and the true resistivity was measured to be 10 ohms-meters (assume m=n=2). (4 points) (a) What is the water saturation? (in fraction, two decimals) (b) What is the oil saturation? (in fraction, two decimals)See Answer
• Q2: 1. From well log data you have found a potential limestone reservoir of 23 m of gross thickness. The average of RHOB density in the zone is 2300 Kg/m3, the true resistivity from DLL after environmental corrections is 1.5 ohm-m, water formation resistivity was found from SP measurements to be 0.025 ohm-m. The lecture of the sonic log is almost a constant value of 60 us/ft for the compressional wave, and 90 us/ft for the shear wave. From SCAL in core plugs, it was found that a=1.1, m=1.9, n=2.1. Calculate the following: (20 points) (a) Average (total) porosity in this reservoir (in fraction, two decimals) = (b) Average micro-porosity in this reservoir (in fraction, two decimals) (c) Average Sw (in fraction, two decimals) = (d) Average So (in fraction, two decimals) = (e) Average Bulk Modulus (in GPa, one decimal) = (f) Average Shear Modulus (in GPa, one decimal)= (g) Average Poisson ratio (one decimal)= (h) Is this a hard or soft rock? Why? Compare with what? (i) Average Hydrocarbon Pore Thickness (in m) G) Is this a pay zone if the cutoff of porosity and water saturation are 0.2 and 0.4 respectively?(yes or no)See Answer
• Q3: 3. Using Figure 7.21 of your textbook, answer the following questions: (8 points) a. What are the zones A, B, C, and D indicating? b. The resistivity of the mud filtrated is higher, lower or equal to the resistivity of the formation? c. Would you use focusing electrode tools in this well? (yes or no) d. Why?See Answer
• Q4: (a) At what depth the dot points are? 2. Using Figure 5.20 of your textbook, answer the following questions: (16 points) (b) What is the value of MSFL measurement at that depth? (c) What is the value of LLD measurement at that depth? (d) At this depth there is any mud invasion at that depth? (yes or no) (e) Why? (f) The resistivity of the mud filtrated is higher, lower or equal to the resistivity of the formation? Would you use induction tools in this well? (yes or no) (h) Why?See Answer
• Q5: 5. Using Figure 23.3, answer the following questions: (12 points) (a) What does Rwa mean? (b) What does Rxo mean? (c) What does Rt mean? (d) According to the discussion of this figure in the textbook, what is the best use of Rxo/Rt? (e) What is the figure in the textbook showing the Hingle plot? (f) What does this Hingle plot used for? See Answer
• Q6:Question :- Why doesn't the ocean freeze?  See Answer
• Q7:You Can Access the video by clicking the link below. https://www.learner.org/series/earth-revealed/1-down-to-earth/ 1. What environmental conditions make life possible on earth? 2. What is the goal of the study of geology? 3. Describe earth's internal and external heat engines. 4. What new theory makes this an exciting time to study the earth? 5. What are the four natural resources mentioned in the film? 6. What is the main factor which leads to soil erosion? 7. How do geologists attempt to predict volcanic eruptions? 8. What earth process is more destructive than volcanoes and earthquakes? 9. Where are many of the earth's major population centers? 10. Why is geology the most important science?See Answer
• Q11:Data Table: Number of Lighted Squares As you count the squares (only count the squares with the dots in them), add the number of squares of each previous color in your data table: Green squares Blue + green squares Purple + blue + green squares Orange + purple + blue + green squares Black + orange + purple + blue + green squares Degree of Tilt Number of squares within the outline (your group) 0° (green) 10° (blue) 20° (purple) 30° (orange) 40° (black)See Answer
• Q12:1. Which date will have the WARMEST MORNING T? (12 pt.) i) ii) iii)See Answer
• Q13:2. Which date will have the COOLEST MORNING T? (12 pt.) i) ii) iii)See Answer
• Q14:3. Which date will have the WARMEST AFTERNOON T? (12 pt.) i) ii) iii)See Answer
• Q15:4. Which date will have the COOLEST AFTERNOON T? (12 pt.) i) ii) iii)See Answer
• Q16:5. Discuss the type and general timing of any fronts that may pass. Explain how three weather variables have changed due to the frontal passage. (10 pt.) Cold Front/Warm Front (Underline) Date & Time of Passage (6 hr interval in local time format) (2 pt.) Variable #1: (2 pt.) Variable #2: (2 pt.) Variable #3: (2 pt.)See Answer
• Q17:6. Underline ONE choice below and prove answer by comparing at least two early morning (06Z) variables to the same two afternoon (187) variables. If NONE, explain why not for ALL days. (6 pt.) Are any MAX temps for the date possible before sunrise (instead of afternoon)? (2 pt.) YES/NONE (2 pt.) (2 pt.) Comparison #1: Comparison #2: Date:See Answer
• Q18:7. Underline ONE choice below and prove answer by comparing at least two evening variables (00Z - 06Z) to the same two morning (06Z - 12Z) variables. If NONE, explain why not for ALL days. (6 pt.) Are any MIN temps for the date possible after sunset (instead of morning)? (2 pt.) YES/NONE Date: (2 pt.) (2 pt.) Comparison #1: Comparison #2:See Answer
• Q19:1. Which date will have the WARMEST MORNING T? (12 pt.) i) ii) iii)See Answer
• Q20:iii) 2. Which date will have the COOLEST MORNING T? (12 pt.) i) ii)See Answer

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