With the first cuppa low octane coffee of the morning, we need to roll up the sleeves and discuss “petrology” for a couple of minutes. Petrology formally is the study of small-scale rock properties, but since it’s close to the word “petroleum” and since petrology does matter, it’s time to “rock out on Friday” in order to understand Peak Oil, which is coming down the road.
There are a number of additional reasons while I’ll be “waxing on” about the oil and gas biz, not the least of which is the arrival here on the ranch of a seismic rig which will be punching in something like a dozen shallow bores to the 60-foot level, and in each of these, about a 2-pound charge will be set off.
Yes…the oil industry is coming to disturb our peace and quiet. Seismic isn’t too bad, though. Their operations will be daylight hours, so we’re early in the process. On the other hand, since we know there are layers of oil and gas, starting about 7,600 feet and down, I have a pretty good idea that this is just the start of a “dance” with drilling in these parts. So much for our peace and quiet
Just a month ago, a couple of new wells “came in” and they’re less than half a mile from our property, south of us on a county road. And we have well drills that are closer to us than that, including a well that lost circulation (a drilling term I hope not to discuss) back in 1993.
The oil vultures circling our place just want to see what we’re sitting on…for now. Ask me in 120 days, though.
Oil and gas extraction by conventional means doesn’t concern me as much as hydraulic fracturing because that brings with it a host of problems, not the least of which (as people in Quakelahoma are finding out) a major increase in seismic activity.
If you remember yesterday’s column, a reader (DJ) was asking “…would you ask Oilman2 what the localized problems with Disposal of FRACKING WASTEWATER could be?”
Well, bubba, today we gonna show yah some down-home schoolin on fracking, courtesy of Oilman2:
First, fracking and oilfield waste saltwater are routinely injected into “disposal wells”. These are STATE regulated – no definitive fed guidelines. In Texas, the only guideline is proximity to existing drinking water wells – little else. Here is a good article regarding this:
http://carnegieendowment.org/2014/03/11/texas-s-oil-and-water-tightrope/h35xRemember, this is Texas, and other states often have fewer regulations regarding wastewater disposal wells, particularly those with minimal oil drilling operations. This is why VA, KY, PA and other states are having issues – the O&G companies get ahead of and stay ahead of regulations that were written without regard for heavy drilling operations, much less fracking operations.
FACTS
1) Oil and gas bearing rocks require a geologic trap to retain oil or gas – otherwise it (oil & gas) migrates to surface (like ‘bubbling crude’ in Beverly Hillbillies intro).
2) This trap requires an impermeable caprock, which is usually shale.
3) Likewise, a valid disposal well should be in a dry trap and have an impermeable caprock to retain the waste. This is rarely mandated specifically enough to insure it is true, and no states police the details of disposal wells sufficiently.
4) There are no VOLUMETRIC LIMITS written in most state regulations, which means the disposal wells can routinely be over-filled, allowing wastewater to migrate into permeable zones which can contaminate overlying rocks. Remember, oil and gas rise to surface due to lighter density than water.
5) Wastewater disposal wells have already been directly linked to localized earthquakes.