(06-29-2013, 04:32 AM)sageo Wrote:
Pet-Again,muchas gracius for your begining commentary. As I re-think the OSH seismic (proposed ) lines on slide 18,I believe the 3 to the west are going to be very revealing. The 2 lines to the east I find a bit puzzling. I guess their selection was based on gravity gradiometry as mentioned. They seem to extend further to the north than I would have imagined. On second thought, that would probably give us the boundary to the north (with closure ?) perhaps .
Slide 18
Now with the two maps printed off draw the new seismic lines on the IOC map. You will see that the two lines to the west will over lap and extend two seismic lines that IOC has already done. From looking at the IOC map it does look like the two eastern lines are a waste of time and money, so I agree with you that Oil Search must have seen something on their gravity data that makes them want to see the seismic data across that area. They must think there is another high on their side of the lease line. Just using the IOC map it appears the area will be below the gas water contact.
I think if Oil Search decides to drill a well after looking at the new seismic it will most likely be in the western area maybe around the -750 meter sub sea contour line. Let me give you and everyone else a couple of comments that might help you understand the IOC map. The dotted red line and the dotted yellow line on the North and East sides of the field represent the gas/water contact which is at about -1470 meters sub sea. The map is a contour map on the top of the limestone reservoir and it is contoured in 50 meter increments. If you want to mark the contour lines on the map you can start with the dark contour line at the southwest end of the map and mark that line as zero or sea level. Now beginning at zero and going around the west end of the map mark the other dark contour lines in order as -250, -500, -750, -1,000, -1,250 and -1,500 meters sub sea. Now you can see that the dotted yellow line follows (roughly) the -1470 contour line. The dotted red line is the same, just inside of the -1,500 meter dark contour line.
The dotted line on the south side of the field is a fault.
If Oil Search drills on the -750 meter contour line they will be 720 meters (2,362 feet) above the gas water contact. Of course if they find a reef or another local high with the new seismic they will probably drill there.
I have been looking at the data from the Triceratops Field and I may have more to say about that later.
