I have not stopped caring about Shannon, and like other relationships in my past I know that when someone touches me as deeply as that I always will. This does not mean I can not move on.
I spent a lot of time thinking about how to win her back, how to fix things, how to be better for her. In the end I needed to realize that it was truly done. I needed to realize that nothing I could do would fix things, or bring her back. All I was really doing was causing us both pain, which is not what I wanted to do.
What does this have to do with opportunity and opening your eyes. I moved on and decided to live life. I asked out a woman I had wanted to ask out for awhile, but was unable to because I was shy and to emotionally encumbered. This wouldn't make much of a blog entry if she had said no, so I will assure you she did not say no.
We have been out a couple of times and we are both looking forward to our next date. She is intelligent and attractive, a great combination. She is originally from England, still has an accent and uses what I consider to be insanely addorable British slang.
I currently do not know where things are headed right now with her. I know we enjoy each others company, and are wanting to take things slow.
The end point of all this is that life dosen't just dump things on your doorstep. You need to take an active role in how you want things to play out. Sure it might steer you, you can not for instance control the actions of other people who effect your course. But you can actively navigate along the corridor provided.
And now on to school and a breakdown of the classes.
Geophysics 396: Seismic survey design. We are learning how to determine optimal fold right now and by the end of it we should be able to design an effective 3d survey to image a subsurface event effectively. Lab wise we are learning to read SEG-Y header information and determine the subsurface survey size by locating the max/min inlines and CDPs. Using the corner points (in UTM) we are able to plot the survey. This is all for orthogonal layouts mind you.
Geology 385: Case studies. We are going through a case study or two every week. Basically an overview of a field and what they are doing there that makes it interesting. With weyburn we talked about secondary and tertiary recovery as well as horizontal drilling into marly formations. Lake Newell talked about deviated wells again, but with rigs starting at 45 degrees so they could get a much steeper angle much faster on the borehole. In the labs we are learning accumap and becoming much more framiliar with querying the large database to find information on wells and other things. We will also learn geo-scout later in the semester.
Comm 288: Technical communications. This course involves writing a large team project. We are doing it in conjuction with Geology 385. We basically pick a field, Ricinus, in our case and are writing a term project with the aim to sell "Cardium Unit #1" of the Ricinus field to the investors. The teams are broken down into a company President, VP Production, VP Land and VP Exploration. I have been given the exploration role for our company. The cardium formation should be ok and I have already found a lot of overview on the depositional environment it was formed in. With the addition of well logs and hopefully some seismic it should be interesting.
Geology 390: Well logging. This course is essentially self taught. We have a new instructor who is a PHd and I am sure SUPER smart and a nice guy, but he is not currently a great presenter. He is planning some more interactive stuff next week. We shall see how it goes. The concepts make sense now. Once you have a clue what each of the logs do you have a better chance at understanding the curves the log readings draw. The whole idea is pretty cool.
For instance clay based rocks(shales) have more of a particular potassium isotope than sandstone does. Shales are source rocks, where the Hc comes from and sandstones are resevoir rocks, the places that the Hc is stored.
By running a tool down the well bore we can measure the presence of this isotope along the well bore. Neutron logs bombard the formation with neutron. These neutrons are absorbed when then contact a hydrogen atom and release a gamma ray. The release of these rays can be measured. This indicates a presence of hydrogen, most noteably water. The presence of this water can give us another indication of porosity, or lack there of.
Formation density logs can be used to determing the porosity of the fomation (How much empty space is in the rock to store Hc).
We also run electrical logs which can be used to measure the resistivity of the fomation. Archie conducted expriments and figured out formulas that describe how formation resistivities change with the presence of water saturation, porosity, and water resistivity changes.
Putting these all together we come up with something like this....
We have three columns. The first has the SP log and the Gamma ray log. They measure essentially the same thing, changes in gross lithology. Gamma is preferred. The scale moves from a reading of 0 to 150 API units for the gamma ray log. So when the line is on the right we have a high reading and so it is a shale. as the line moves left our isotope count is dropping, the formation is becoming more sandy. The second column is showing the resistivity of the formation. You will note that the resistance spikes at one point registering over 20 ohm-ms. The last column is showing us the density log (FDC) and the Neutron log (CNL). As the log moves down the CNL line suddenly drops telling us that there is low hydrogen in the formation there. Looking at the Density log we see the two lines cross at this point as well. The density log is indicating an area of high porosity. Combining all these logs we see that at the top of the log we have a shale that is becoming sandy as we get deeper. At a certain point the resistivity shoots through the roof. At the same point we have an indication of low porosity from the Neutron log. and an indication of high porosity from the density log. Really the Neutron log is not showing us low porosity, it is showing us low hydrogen. So low hydrogen in a high porosity area?
Gas contact. This also fits with the other two logs. High resistivity and moving into a resevoir type system.
From the gamma ray log we can also infer that the grain sizes in the rocks are getting smaller as we move up, or fining upwards. This may indicate a river type depositional environment or it may indicate a transgressive sealevel along a shore line. Both of these should result in a fining upwards trend. Looking at the whole gamma log I would probably go with the shoreline or barrier island type system. Starting near the bottom we have a shaly sequence that moves into sandstone. It coarsens upwards. This indicates that sea was in a regressive state. Over time sandstones were deposited. Then we see that it moves back into shales as we get towards the top indicating that the sea has transgressed back onto the land.
A lot of information from a few wiggly lines.
The last two classes are Unix, where we are dealing with linux at the moment, mostly at the command line. It is currently fairly boring, but we are moving into commands like grep which are newer to me and so a little more interesting. The other is Oracle which is ok, currently we are building pretty simple databases and the commands are coming pretty slow. We can also practice on-line so I can work on it anywhere easily. It is a pretty good class.
All in all it is a pretty good semester, despite the well logging stuff being self taught.
Well that is all for now!
No comments:
Post a Comment