Tuesday, 23 October 2012

Oil and Gas - the big thing in Texas

Photograph by Stuart, in Brackenridge Park, TX
So whats new in Texas, oil and gas? Well actually nothing, but the Texans are breaking new ground, so to speak, when it comes to energy.

The Eagle Ford Shale gets its name from a town west of Dallas so called due to the shale outcrops that can be seen. the deposit is about 250 feet in thickness and is said to reach depths of 12000 feet and consisting of organic matter rich in marine fossil shale.  So its very rich in oil and gas and it has had an impact on the financial landscape as well as the physical landscape and extends all the way South to Laredo in a 50 km wide width.

Oil and gas has changed the fortunes of many struggling cattle ranch owners. South Texas has been the victim of many droughts and over the years some of these large ranches have been subdivided  or "cut up" into smaller ranches and farms and sold off to save the land owner from foreclosure. Texans have been experiencing severe drought even as recently as 2011. In fact when we arrived here in September 2011, the ground was a dry, brown to grey sun scorched colour (Americans read color) with little to no grazing grass. It was hot with temperatures at 115 degrees Fahrenheit.

So going back to the oil and gas in the Eagle Ford Shale play as it is commonly known, has changed the fortunes of Texans and provided plenty of jobs for Americans and Mexicans.

This photo was taken 500 yards from our house.

The oil and gas is harnessed deep below the earths surface by the process of "hydraulic fracturing" known as "fracking" and is made possible since the shale is made up of a brittle carbon layer.
"Fracking" is a process of drilling a well and pumping a highly pressurised fluid into the well which ultimately cracks the the sub soil and creates channels and this allows the trapped oil or gas to pool  into an area and is easily harnessed. This process  has been around for a long time but now has been further developed to where a well operator can drill horizontally underground to maximise the effect of the "fracking" technique and increasing the potential of a well. The fluid or proppant that is pumped into the well can be made up of different substances and is applied in the form of gel or foam but the most common is probably "slickwater" made up of 99% of water and 1% additive. The additive could be hydrochloric acid which helps to break down or dissolve certain rocks like limestone.
With one exception the use of "fracking" fluids for hydraulic fracturing was excluded from regulation from the American clean water act in 2005.

Monday, 1 October 2012

Puddleglum & other Marshwiggles

This weekend we had an incredible rainfall of approx 13 inches of rain, and began to feel like the Marshwiggles in Narnia's "The Silver Chair".  The Marsh-wiggles live near the River Shribble in the Marshlands.  
A Marshwiggle found in our marshy yard.. the earthworm was over a foot long!  See we told you the critters are bigger here.
  All the ditches were overflowing, and a deep stream was filled to the brim and lapping at the underside of the bridge.  The fields were covered in water and it looked as if we were in the Lake district. 

Welcome to the Lake District, TX

  The water table was at grass roots level, and was pouring under our house. 

 We bought a water pump for our house!  We must have pumped about 4 tons of water from underneath, since as fast as we were pumping water out from under out house, more was pouring in from the surrounding soil.  The soil was like a great big sponge, filled to capacity with water.

Puddleglum, in gum boots ankle deep in the latest deluge to pour down on us

In fact it all became a little overwhelming, and I began to feel like a Marsh-wiggle, but not so optimistic as Puddleglum who always encouraged everyone to "put a bold face on it."

To think, this time last year Texas was in severe drought.