PGE 424 Home Work 5 Due: April 15 1. Chemical analysis of an oil reservoir brine yielded the following results: 25,000 ppm Na+, 30,000 ppm Cl-, 7500 ppm Mg+, 6,000 ppm SO4-2, 4000 ppm HCO3-. Calculate the equivalent salinity in ppm sodium chloride, and th
PGE 424 Home Work 3 Due: March 6 1. Attached is the mercury capillary pressure data in the spreadsheet HW3. The cos for mercury/air is 372 dyne/cm. Calculate the cumulative pore throat size distribution, assuming a bundle of tubes model. Answer: Pc = 2cos
Quiz 3 PGE 424 20 minutes Name:
1. State multiphase Darcys law for oil and water flow.
qw=-kkrwwdPwdx ; qo=-kkroodPodx
2. Why is typically (krw+kro) < 1?
Immiscible fluids block each other in the pore network.
3. What does krw, relative permeability of wa
Quiz 4 PGE 424 20 minutes
1. What is "Spontaneous Potential"?
Electrochemical potential (aka diffusion potential) between connate water and drilling mud water
2. What does the depth of investigation of an electrical log depend on?
The distance betwe
Quiz 2 PGE 424 20 minutes; 10 points
1. State Darcys law.
qx = -(k/) dp/dx
2. Name two conditions under which Darcys law is not valid.
-High flow rate or Reynolds No. -Non-Newtonian fluid flow -Low pressure gas, where mean free path ~ pore size
3. How doe
Quiz 1 PGE 424 Name: 1. 10 points 15 min
What are the 3 types of rocks? Which one is important to petroleum engineering? Why? Igneous, sedimentary, metamorphic. Sedimentary is the most important because it has porosity and can hold hydrocarbons.