Mensajepor Pocoyo » Lun Feb 10, 2014 10:32 pm
En general, es muy caro hacer un pozo (fracking)...
A modo de ejemplo, a miles de pies de profundidad... como los de acá.
The cost of drilling a horizontal shale well ranges from $3.5 million in the Mississippi lime to $9 million or more in the Bakken. That’s far more than the cost of a similar vertical well, which goes from $400,000 to $600,000, according to Drillinginfo.
In September, Steve Slawson, vice president for Slawson Exploration, sat in a trailer about 35 miles north of Oklahoma City, watching monitors as his crew shattered the Mississippi lime thousands of feet below.
The well, known as Begonia 1-30H, will cost about $3.7 million.
One-third of that is the cost of fracking:
First, thin pipes loaded with explosives are threaded into the hole to blast the ancient reef.
Then, at a cost of about $80,000, the Begonia will consume 50,000 gallons of hydrochloric acid to dissolve the limestone;
another $68,000 will pay for 1,000 gallons of antibacterial solution to kill microorganisms (esto es normal en cualquier tubería en operación) that chew up the pipes;
$110,000 goes for a soapy surfactant to reduce friction;
$10,000 covers a scale inhibitor to prevent lime buildup;
and $230,000 purchases 2 million pounds of sand to prop the fractures open so the oil and gas can flow into the well.
Then there’s $300,000 in pumping charges, plus the cost of equipment rental, pipe, and water, which brings the price tag for fracking the well to $1.2 million.
A host of other things, from cement to Porta Potty rentals, accounts for the rest of the cost
Aparte del costo económico, el riesgo ambiental es alto, esperemos que también sea controlado.
Nadie duda que Vaca Muerta tenga gas y petróleo, pero creo que el costo puede llegar a ser más de lo esperado, por lo tanto no rentable. Veremos.
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