I’ve been thinking about the blowout Chesapeake Energy caused near Sweetwater, Oklahoma and I have a two questions:
What was that shallow gas pocket doing at 900′?
How did the shallow gas pocket get there?
I’ve been poking around on the Oklahoma Corporation Commission and they don’t have–or I haven’t found it–a map showing the locations of all the oil and gas wells in Oklahoma. So, I resorted to Google maps.
If you move this map to the Northwest of Sweetwater, where the blowout took place, you will find the familiar patchwork of wells. There are a lot of wells in that area so–most likely–there is a lot of fracking going on in the area.
We know that gas migrates. Sometimes it migrates due to crappy casing jobs. But, I recently talked to a very smart guy who pointed out that cement won’t make a secure bond to the materials downhole. GOOD POINT!!! There will always be gaps–even microscopic gaps–and pathways for the gas to migrate between the materials downhole and the casing. Also, remember that they don’t case the entire length of the drill pipe.
We also need to remember that THIS can and does happen.
I can’t find where there is a shallow gas formation in Oklahoma in the area around Sweetwater. Maybe there is but I can’t find it.
So, you tell me: How did that shallow gas pocket get there?
Obviously, CHK was not expecting to hit a pocket of shallow gas.
I talked to another really smart person who said they are fracking and “gas is going everywhere and some of it just happens to go up the casing and into the pipeline.”