Recycling fracking water
It was just a few years ago that fracking was introduced and the process is now being currently used. (Fracking refers to the procedure of creating fractures in rocks and rock formations by injecting fluid into cracks to force them further open. The larger fissures allow more oil and gas to flow out of the formation and into the wellbore, from where it can be extracted.)
No one ever thought twice about reusing the water until now.
“Disposal Solutions will pump well-site water from trucks, put it in retention ponds where it can be cleansed of chemicals, dirt and rocks, and send it back out to drilling operations.”
This idea is still new but companies such as Apache Corp., and Devon Energy are trying to head off any potential shortage of water to be used for fracking. Recently, a study estimated that fracking use up roughly 13 million gallons of water. With this being said, there is a need to recycle all this water being used, especially where there are places that are suffering because of droughts and they have no water.
“Chevron Corp. has announced that the deepwater drillship Pacific Santa Ana has arrived in the Gulf of Mexico to work for Chevron under a five-year contract with a subsidiary of Pacific Drilling S.A. Pacific Santa Ana is the first drillship designed with the capacity to perform dual gradient drilling (DGD). Santa Ana has the potential to change the way deepwater wells are drilled.”
Dual drilling and conventional drilling are quite different. Chevron Corp is the first and only to come out with the new dual deep water drilling system. This system is very green and saves time and money.
Deepwater drilling uses a single drilling fluid weight in the borehole, dual gradient drilling employs two weights of drilling fluid – one above the seabed, another below. This allows drillers to more closely match the pressures presented by nature and effectively eliminates water depth as a consideration in well design. DGD also allows drillers to more quickly detect and appropriately react to down hole pressure changes, which can enhance the safety and efficiency of deepwater drilling operations.